This class tries to handle {@code null} input gracefully.
8 | * An exception will not be thrown for a {@code null}
9 | * array input. However, an Object array that contains a {@code null}
10 | * element may throw an exception. Each method documents its behaviour.
11 | *
12 | *
#ThreadSafe#
13 | * @since 2.0
14 | */
15 |
16 | public class ArrayUtils {
17 |
18 | /**
19 | * An empty immutable {@code byte} array.
20 | */
21 | public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
22 |
23 |
24 | /**
25 | * Copies the specified range of the specified array into a new array.
26 | * The initial index of the range (from) must lie between zero
27 | * and original.length, inclusive. The value at
28 | * original[from] is placed into the initial element of the copy
29 | * (unless from == original.length or from == to).
30 | * Values from subsequent elements in the original array are placed into
31 | * subsequent elements in the copy. The final index of the range
32 | * (to), which must be greater than or equal to from,
33 | * may be greater than original.length, in which case
34 | * (byte)0 is placed in all elements of the copy whose index is
35 | * greater than or equal to original.length - from. The length
36 | * of the returned array will be to - from.
37 | *
38 | * @param original the array from which a range is to be copied
39 | * @param from the initial index of the range to be copied, inclusive
40 | * @param to the final index of the range to be copied, exclusive.
41 | * (This index may lie outside the array.)
42 | * @return a new array containing the specified range from the original array,
43 | * truncated or padded with zeros to obtain the required length
44 | * @throws ArrayIndexOutOfBoundsException if {@code from < 0}
45 | * or {@code from > original.length}
46 | * @throws IllegalArgumentException if from > to
47 | * @throws NullPointerException if original is null
48 | * @since 1.6
49 | */
50 | public static byte[] copyOfRange(byte[] original, int from, int to) {
51 | int newLength = to - from;
52 | if (newLength < 0)
53 | throw new IllegalArgumentException(from + " > " + to);
54 | byte[] copy = new byte[newLength];
55 | System.arraycopy(original, from, copy, 0,
56 | Math.min(original.length - from, newLength));
57 | return copy;
58 | }
59 |
60 | /**
61 | *
Produces a new {@code byte} array containing the elements
62 | * between the start and end indices.
63 | *
64 | *
The start index is inclusive, the end index exclusive.
65 | * Null array input produces null output.
66 | *
67 | * @param array the array
68 | * @param startIndexInclusive the starting index. Undervalue (<0)
69 | * is promoted to 0, overvalue (>array.length) results
70 | * in an empty array.
71 | * @param endIndexExclusive elements up to endIndex-1 are present in the
72 | * returned subarray. Undervalue (< startIndex) produces
73 | * empty array, overvalue (>array.length) is demoted to
74 | * array length.
75 | * @return a new array containing the elements between
76 | * the start and end indices.
77 | * @since 2.1
78 | */
79 | public static byte[] subarray(final byte[] array, int startIndexInclusive, int endIndexExclusive) {
80 | if (array == null) {
81 | return null;
82 | }
83 | if (startIndexInclusive < 0) {
84 | startIndexInclusive = 0;
85 | }
86 | if (endIndexExclusive > array.length) {
87 | endIndexExclusive = array.length;
88 | }
89 | final int newSize = endIndexExclusive - startIndexInclusive;
90 | if (newSize <= 0) {
91 | return EMPTY_BYTE_ARRAY;
92 | }
93 |
94 | final byte[] subarray = new byte[newSize];
95 | System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
96 | return subarray;
97 | }
98 |
99 | /**
100 | *
Adds all the elements of the given arrays into a new array.
101 | *
The new array contains all of the element of {@code array1} followed
102 | * by all of the elements {@code array2}. When an array is returned, it is always
103 | * a new array.
104 | *
105 | *
110 | *
111 | * @param array1 the first array whose elements are added to the new array.
112 | * @param array2 the second array whose elements are added to the new array.
113 | * @return The new byte[] array.
114 | * @since 2.1
115 | */
116 | public static byte[] addAll(final byte[] array1, final byte... array2) {
117 | if (array1 == null) {
118 | return clone(array2);
119 | } else if (array2 == null) {
120 | return clone(array1);
121 | }
122 | final byte[] joinedArray = new byte[array1.length + array2.length];
123 | System.arraycopy(array1, 0, joinedArray, 0, array1.length);
124 | System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
125 | return joinedArray;
126 | }
127 |
128 | /**
129 | *
Clones an array returning a typecast result and handling
130 | * {@code null}.
131 | *
132 | *
This method returns {@code null} for a {@code null} input array.
133 | *
134 | * @param array the array to clone, may be {@code null}
135 | * @return the cloned array, {@code null} if {@code null} input
136 | */
137 | public static byte[] clone(final byte[] array) {
138 | if (array == null) {
139 | return null;
140 | }
141 | return array.clone();
142 | }
143 |
144 | }
145 |
--------------------------------------------------------------------------------
/app/src/main/java/com/blakequ/rsademo/javalib/Base64.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Java Base64 - A pure Java library for reading and writing Base64
3 | * encoded streams.
4 | *
5 | * Copyright (C) 2007-2009 Carlo Pelliccia (www.sauronsoftware.it)
6 | *
7 | * This program is free software: you can redistribute it and/or modify
8 | * it under the terms of the GNU Lesser General Public License version
9 | * 2.1, as published by the Free Software Foundation.
10 | *
11 | * This program is distributed in the hope that it will be useful,
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 | * GNU General Public License for more details.
15 | *
16 | * You should have received a copy of the GNU Lesser General Public
17 | * License version 2.1 along with this program.
18 | * If not, see .
19 | */
20 | package com.blakequ.rsademo.javalib;
21 |
22 | import java.io.ByteArrayInputStream;
23 | import java.io.ByteArrayOutputStream;
24 | import java.io.File;
25 | import java.io.FileInputStream;
26 | import java.io.FileOutputStream;
27 | import java.io.IOException;
28 | import java.io.InputStream;
29 | import java.io.OutputStream;
30 | import java.io.UnsupportedEncodingException;
31 |
32 | /**
33 | *
34 | * Base64 encoding and decoding utility methods, both for binary and textual
35 | * informations.
36 | *
108 | * The supplied string is decoded into a binary sequence, and then the
109 | * sequence is encoded with the system default charset and returned.
110 | *
134 | * The supplied string is decoded into a binary sequence, and then the
135 | * sequence is encoded with the supplied charset and returned.
136 | *
168 | * If data are large, i.e. if you are working with large binary files,
169 | * consider to use a {@link Base64OutputStream} instead of loading too much
170 | * data in memory.
171 | *
186 | * Encodes a binary sequence, wrapping every encoded line every
187 | * wrapAt characters. A wrapAt value less than 1 disables
188 | * wrapping.
189 | *
190 | *
191 | * If data are large, i.e. if you are working with large binary files,
192 | * consider to use a {@link Base64OutputStream} instead of loading too much
193 | * data in memory.
194 | *
234 | * If data are large, i.e. if you are working with large binary files,
235 | * consider to use a {@link Base64InputStream} instead of loading too much
236 | * data in memory.
237 | *
295 | * Encodes data from the given input stream and writes them in the given
296 | * output stream, wrapping every encoded line every wrapAt
297 | * characters. A wrapAt value less than 1 disables wrapping.
298 | *
299 | *
300 | * The supplied input stream is read until its end is reached, but it's not
301 | * closed by this method.
302 | *
303 | *
304 | * The supplied output stream is nor flushed neither closed by this method.
305 | *
306 | *
307 | * @param inputStream
308 | * The input stream from which clear data are read.
309 | * @param outputStream
310 | * The output stream in which encoded data are written.
311 | * @param wrapAt
312 | * The max line length for encoded data. If less than 1 no wrap
313 | * is applied.
314 | * @throws IOException
315 | * If an I/O error occurs.
316 | */
317 | public static void encode(InputStream inputStream,
318 | OutputStream outputStream, int wrapAt) throws IOException {
319 | Base64OutputStream aux = new Base64OutputStream(outputStream, wrapAt);
320 | copy(inputStream, aux);
321 | aux.commit();
322 | }
323 |
324 | /**
325 | *
326 | * Decodes data from the given input stream and writes them in the given
327 | * output stream.
328 | *
329 | *
330 | * The supplied input stream is read until its end is reached, but it's not
331 | * closed by this method.
332 | *
333 | *
334 | * The supplied output stream is nor flushed neither closed by this method.
335 | *
336 | *
337 | * @param inputStream
338 | * The input stream from which encoded data are read.
339 | * @param outputStream
340 | * The output stream in which decoded data are written.
341 | * @throws IOException
342 | * If an I/O error occurs.
343 | */
344 | public static void decode(InputStream inputStream, OutputStream outputStream)
345 | throws IOException {
346 | copy(new Base64InputStream(inputStream), outputStream);
347 | }
348 |
349 | /**
350 | *
351 | * Encodes data from the given source file contents and writes them in the
352 | * given target file, wrapping every encoded line every wrapAt
353 | * characters. A wrapAt value less than 1 disables wrapping.
354 | *
355 | *
356 | * @param source
357 | * The source file, from which decoded data are read.
358 | * @param target
359 | * The target file, in which encoded data are written.
360 | * @param wrapAt
361 | * The max line length for encoded data. If less than 1 no wrap
362 | * is applied.
363 | * @throws IOException
364 | * If an I/O error occurs.
365 | * @since 1.3
366 | */
367 | public static void encode(File source, File target, int wrapAt)
368 | throws IOException {
369 | InputStream inputStream = null;
370 | OutputStream outputStream = null;
371 | try {
372 | inputStream = new FileInputStream(source);
373 | outputStream = new FileOutputStream(target);
374 | Base64.encode(inputStream, outputStream, wrapAt);
375 | } finally {
376 | if (outputStream != null) {
377 | try {
378 | outputStream.close();
379 | } catch (Throwable t) {
380 | ;
381 | }
382 | }
383 | if (inputStream != null) {
384 | try {
385 | inputStream.close();
386 | } catch (Throwable t) {
387 | ;
388 | }
389 | }
390 | }
391 | }
392 |
393 | /**
394 | *
395 | * Encodes data from the given source file contents and writes them in the
396 | * given target file.
397 | *
434 | * Decodes data from the given source file contents and writes them in the
435 | * given target file.
436 | *
437 | *
438 | * @param source
439 | * The source file, from which encoded data are read.
440 | * @param target
441 | * The target file, in which decoded data are written.
442 | * @throws IOException
443 | * If an I/O error occurs.
444 | * @since 1.3
445 | */
446 | public static void decode(File source, File target) throws IOException {
447 | InputStream inputStream = null;
448 | OutputStream outputStream = null;
449 | try {
450 | inputStream = new FileInputStream(source);
451 | outputStream = new FileOutputStream(target);
452 | decode(inputStream, outputStream);
453 | } finally {
454 | if (outputStream != null) {
455 | try {
456 | outputStream.close();
457 | } catch (Throwable t) {
458 | ;
459 | }
460 | }
461 | if (inputStream != null) {
462 | try {
463 | inputStream.close();
464 | } catch (Throwable t) {
465 | ;
466 | }
467 | }
468 | }
469 | }
470 |
471 | /**
472 | * Copies data from a stream to another.
473 | *
474 | * @param inputStream
475 | * The input stream.
476 | * @param outputStream
477 | * The output stream.
478 | * @throws IOException
479 | * If a unexpected I/O error occurs.
480 | */
481 | private static void copy(InputStream inputStream, OutputStream outputStream)
482 | throws IOException {
483 | // 1KB buffer
484 | byte[] b = new byte[1024];
485 | int len;
486 | while ((len = inputStream.read(b)) != -1) {
487 | outputStream.write(b, 0, len);
488 | }
489 | }
490 |
491 | }
492 |
--------------------------------------------------------------------------------
/app/src/main/java/com/blakequ/rsademo/javalib/Base64InputStream.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Java Base64 - A pure Java library for reading and writing Base64
3 | * encoded streams.
4 | *
5 | * Copyright (C) 2007-2009 Carlo Pelliccia (www.sauronsoftware.it)
6 | *
7 | * This program is free software: you can redistribute it and/or modify
8 | * it under the terms of the GNU Lesser General Public License version
9 | * 2.1, as published by the Free Software Foundation.
10 | *
11 | * This program is distributed in the hope that it will be useful,
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 | * GNU General Public License for more details.
15 | *
16 | * You should have received a copy of the GNU Lesser General Public
17 | * License version 2.1 along with this program.
18 | * If not, see .
19 | */
20 | package com.blakequ.rsademo.javalib;
21 |
22 | import java.io.IOException;
23 | import java.io.InputStream;
24 |
25 | /**
26 | *
27 | * A base64 encoding input stream.
28 | *
29 | *
30 | *
31 | * A Base64InputStream reads from an underlying stream which is
32 | * supposed to be a base64 encoded stream. Base64InputStream decodes
33 | * the data read from the underlying stream and returns the decoded bytes to the
34 | * caller.
35 | *
84 | * It builds a base64 encoding output stream writing the encoded data in the
85 | * given underlying stream.
86 | *
87 | *
88 | *
89 | * The encoded data is wrapped to a new line (with a CRLF sequence) every
90 | * wrapAt bytes sent to the underlying stream. If the
91 | * wrapAt supplied value is less than 1 the encoded data will not
92 | * be wrapped.
93 | *
94 | *
95 | * @param outputStream
96 | * The underlying stream.
97 | * @param wrapAt
98 | * The max line length for encoded data. If less than 1 no wrap
99 | * is applied.
100 | */
101 | public Base64OutputStream(OutputStream outputStream, int wrapAt) {
102 | this.outputStream = outputStream;
103 | this.linelength = wrapAt;
104 | }
105 |
106 | public void write(int b) throws IOException {
107 | int value = (b & 0xFF) << (16 - (bytecounter * 8));
108 | buffer = buffer | value;
109 | bytecounter++;
110 | if (bytecounter == 3) {
111 | commit();
112 | }
113 | }
114 |
115 | public void close() throws IOException {
116 | commit();
117 | outputStream.close();
118 | }
119 |
120 | /**
121 | *
122 | * It commits 4 bytes to the underlying stream.
123 | *
16 | * Licensed under the blakequ.com License, Version 1.0 (the "License");
17 | * Unless required by applicable law or agreed to in writing, software
18 | * distributed under the License is distributed on an "AS IS" BASIS,
19 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 | * See the License for the specific language governing permissions and
21 | * limitations under the License.
22 | *
1. first step: set public and private key. 如果输入的秘钥（公钥和私钥）都是经过Base64.encode处理的，Base64Utils.encode(key.getEncoded())，如果是自己生成的需要先行处理
30 | *
2. encrypt and decrypt file by method
31 | */
32 |
33 | public class FileEncryptionManager {
34 | private static FileEncryptionManager INSTANCE;
35 | private String publicKey;
36 | private String privateKey;
37 |
38 | private FileEncryptionManager() {
39 | }
40 |
41 | public static FileEncryptionManager getInstance(){
42 | if (INSTANCE == null){
43 | INSTANCE = new FileEncryptionManager();
44 | }
45 | return INSTANCE;
46 | }
47 |
48 | /**
49 | * set the key of encrypt and decrypt
50 | * @param publicKey
51 | * @param privateKey
52 | * @param isEncode is encoded by Base64
53 | * @see com.blakequ.rsa.Base64Utils#encode
54 | * @see #generateKey() ()
55 | */
56 | public void setRSAKey(String publicKey, String privateKey, boolean isEncode) throws Exception {
57 | if (isEncode){
58 | this.publicKey = publicKey;
59 | this.privateKey = privateKey;
60 | }else {
61 | this.publicKey = com.blakequ.rsa.Base64Utils.encode(publicKey.getBytes());
62 | this.privateKey = com.blakequ.rsa.Base64Utils.encode(privateKey.getBytes());
63 | }
64 | }
65 |
66 | /**
67 | * set the key of encrypt and decrypt
68 | * @param publicKey
69 | * @param privateKey
70 | * @see #generateKey() ()
71 | */
72 | public void setRSAKey(RSAPublicKey publicKey, RSAPrivateKey privateKey) throws Exception {
73 | this.publicKey = com.blakequ.rsa.Base64Utils.encode(publicKey.getEncoded());
74 | this.privateKey = Base64Utils.encode(privateKey.getEncoded());
75 | }
76 |
77 | /**
78 | * generate public and private key
79 | * @throws Exception
80 | * @see #setRSAKey(RSAPublicKey, RSAPrivateKey)
81 | * @see #setRSAKey(String, String, boolean)
82 | */
83 | public void generateKey() throws Exception {
84 | Map map = RSAProvider.generateKeyPair();
85 | this.privateKey = RSAProvider.getPrivateKeyBytes(map);
86 | this.publicKey = RSAProvider.getPublicKeyBytes(map);
87 | }
88 |
89 | public String getPublicKey() {
90 | return publicKey;
91 | }
92 |
93 | public String getPrivateKey() {
94 | return privateKey;
95 | }
96 |
97 | /**
98 | * sign data by private key
99 | * @param data the data by encrypted
100 | * @return
101 | * @throws Exception
102 | * @see #verifyByPublicKey(byte[], String)
103 | */
104 | public String signByPrivateKey(byte[] data) throws Exception {
105 | if (privateKey == null || privateKey.isEmpty()){
106 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
107 | }
108 | return RSAProvider.sign(data, privateKey);
109 | }
110 |
111 | /**
112 | * verify data by sign
113 | * @param data the data by encrypted
114 | * @param sign
115 | * @return
116 | * @throws Exception
117 | * @see #signByPrivateKey(byte[])
118 | */
119 | public boolean verifyByPublicKey(byte[] data, String sign) throws Exception {
120 | if (publicKey == null || publicKey.isEmpty()){
121 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
122 | }
123 | return RSAProvider.verify(data, publicKey, sign);
124 | }
125 |
126 | /**
127 | * encrypt by public key
128 | * @param data
129 | * @return
130 | * @throws Exception
131 | */
132 | public byte[] encryptByPublicKey(byte[] data) throws Exception {
133 | if (publicKey == null || publicKey.isEmpty()){
134 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
135 | }
136 | return RSAProvider.encryptPublicKey(data, publicKey);
137 | }
138 |
139 | /**
140 | * decrypt by private key
141 | * @param data
142 | * @return
143 | * @throws Exception
144 | */
145 | public byte[] decryptByPrivateKey(byte[] data) throws Exception {
146 | if (privateKey == null || privateKey.isEmpty()){
147 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
148 | }
149 | return RSAProvider.decryptPrivateKey(data, privateKey);
150 | }
151 |
152 | /**
153 | * encrypt by private key
154 | * @param data
155 | * @return
156 | * @throws Exception
157 | */
158 | public byte[] encryptByPrivateKey(byte[] data) throws Exception {
159 | if (privateKey == null || privateKey.isEmpty()){
160 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
161 | }
162 | return RSAProvider.encryptPublicKey(data, privateKey);
163 | }
164 |
165 | /**
166 | * decrypt by public key
167 | * @param data
168 | * @return
169 | * @throws Exception
170 | */
171 | public byte[] decryptByPublicKey(byte[] data) throws Exception {
172 | if (publicKey == null || publicKey.isEmpty()){
173 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
174 | }
175 | return RSAProvider.decryptPrivateKey(data, publicKey);
176 | }
177 |
178 | /**
179 | * using public key encrypt file
180 | * @param inputFile the file of wait to encrypt
181 | * @param outFile
182 | * @return encrypted data
183 | */
184 | public byte[] encryptFileByPublicKey(File inputFile, File outFile) throws Exception {
185 | if (publicKey == null || publicKey.isEmpty()){
186 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
187 | }
188 | byte[] data = FileUtils.getDataFromFile(inputFile);
189 | byte[] encryData = RSAProvider.encryptPublicKey(data, publicKey);
190 | if (outFile != null){
191 | boolean result = FileUtils.saveDataToFile(encryData, outFile);
192 | Log.d("FileEncryptionManager", "save file result "+result);
193 | }
194 | return encryData;
195 | }
196 |
197 | /**
198 | * using private key decrypt file
199 | * @param inputFile the file is encrypted
200 | * @param outFile
201 | * @return origial data by decrypted
202 | */
203 | public byte[] decryptFileByPrivateKey(File inputFile, File outFile) throws Exception {
204 | if (privateKey == null || privateKey.isEmpty()){
205 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
206 | }
207 | byte[] data = FileUtils.getDataFromFile(inputFile);
208 | byte[] decryData = RSAProvider.decryptPrivateKey(data, privateKey);
209 | if (outFile != null){
210 | boolean result = FileUtils.saveDataToFile(decryData, outFile);
211 | Log.d("FileEncryptionManager", "save file result "+result);
212 | }
213 | return decryData;
214 | }
215 |
216 | /**
217 | * using public key encrypt file
218 | * @param inputData the file of wait to encrypt
219 | * @param outFile
220 | * @return encrypted data
221 | */
222 | public byte[] encryptFileByPublicKey(byte[] inputData, File outFile) throws Exception {
223 | if (publicKey == null || publicKey.isEmpty()){
224 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
225 | }
226 | byte[] encryData = RSAProvider.encryptPublicKey(inputData, publicKey);
227 | if (outFile != null){
228 | boolean result = FileUtils.saveDataToFile(encryData, outFile);
229 | Log.d("FileEncryptionManager", "save file result "+result);
230 | }
231 | return encryData;
232 | }
233 |
234 | /**
235 | * using private key decrypt file
236 | * @param inputData the file is encrypted
237 | * @param outFile
238 | * @return origial data by decrypted
239 | */
240 | public byte[] decryptFileByPrivateKey(byte[] inputData, File outFile) throws Exception {
241 | if (privateKey == null || privateKey.isEmpty()){
242 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
243 | }
244 | byte[] decryData = RSAProvider.decryptPrivateKey(inputData, privateKey);
245 | if (outFile != null){
246 | boolean result = FileUtils.saveDataToFile(decryData, outFile);
247 | Log.d("FileEncryptionManager", "save file result "+result);
248 | }
249 | return decryData;
250 | }
251 |
252 | /**
253 | * using private key encrypt file
254 | * @param inputFile the file of wait to encrypt
255 | * @param outFile
256 | * @return encrypted data
257 | */
258 | public byte[] encryptFileByPrivateKey(File inputFile, File outFile) throws Exception {
259 | if (privateKey == null || privateKey.isEmpty()){
260 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
261 | }
262 | byte[] data = FileUtils.getDataFromFile(inputFile);
263 | byte[] encryData = RSAProvider.encryptPrivateKey(data, privateKey);
264 | if (outFile != null){
265 | boolean result = FileUtils.saveDataToFile(encryData, outFile);
266 | Log.d("FileEncryptionManager", "save file result "+result);
267 | }
268 | return encryData;
269 | }
270 |
271 | /**
272 | * using public key decrypt file
273 | * @param inputFile the file is encrypted
274 | * @param outFile
275 | * @return origial data by decrypted
276 | */
277 | public byte[] decryptFileByPublicKey(File inputFile, File outFile) throws Exception {
278 | if (publicKey == null || publicKey.isEmpty()){
279 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
280 | }
281 | byte[] data = FileUtils.getDataFromFile(inputFile);
282 | byte[] decryData = RSAProvider.decryptPublicKey(data, publicKey);
283 | if (outFile != null){
284 | boolean result = FileUtils.saveDataToFile(decryData, outFile);
285 | Log.d("FileEncryptionManager", "save file result "+result);
286 | }
287 | return decryData;
288 | }
289 | }
290 |
--------------------------------------------------------------------------------
/app/src/main/java/com/blakequ/rsademo/javalib/FileUtils.java:
--------------------------------------------------------------------------------
1 | package com.blakequ.rsademo.javalib;
2 |
3 | import java.io.BufferedReader;
4 | import java.io.ByteArrayOutputStream;
5 | import java.io.File;
6 | import java.io.FileInputStream;
7 | import java.io.FileNotFoundException;
8 | import java.io.FileOutputStream;
9 | import java.io.IOException;
10 | import java.io.InputStream;
11 | import java.io.InputStreamReader;
12 |
13 | /**
14 | * Copyright (C) BlakeQu All Rights Reserved
15 | *
16 | * Licensed under the blakequ.com License, Version 1.0 (the "License");
17 | * Unless required by applicable law or agreed to in writing, software
18 | * distributed under the License is distributed on an "AS IS" BASIS,
19 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 | * See the License for the specific language governing permissions and
21 | * limitations under the License.
22 | *
31 | * Licensed under the blakequ.com License, Version 1.0 (the "License");
32 | * Unless required by applicable law or agreed to in writing, software
33 | * distributed under the License is distributed on an "AS IS" BASIS,
34 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
35 | * See the License for the specific language governing permissions and
36 | * limitations under the License.
37 | *
38 | * author : quhao
39 | * date : 2017/2/22 16:03
40 | * last modify author :
41 | * version : 1.0
42 | * description:
43 | */
44 |
45 | public class RSAProvider {
46 |
47 | /**
48 | * KEY_ALGORITHM
49 | */
50 | public static final String KEY_ALGORITHM = "RSA";
51 | /**
52 | * 加密Key的长度等于1024
53 | */
54 | public static int KEYSIZE = 1024;
55 | /**
56 | * 解密时必须按照此分组解密
57 | */
58 | public static int decodeLen = KEYSIZE / 8;
59 | /**
60 | * 加密时小于117即可
61 | */
62 | public static int encodeLen = 110;//(DEFAULT_KEY_SIZE / 8) - 11;
63 | /**
64 | * 公钥
65 | */
66 | private static final String PUBLIC_KEY = "publicKey";
67 | /**
68 | * 私钥
69 | */
70 | private static final String PRIVATE_KEY = "privateKey";
71 | /**
72 | * MODULES
73 | */
74 | private static final String MODULES = "RSAModules";
75 | /**
76 | * 签名算法
77 | */
78 | public static final String SIGNATURE_ALGORITHM = "MD5withRSA";
79 | /**
80 | * 加密填充方式,android系统的RSA实现是"RSA/None/NoPadding"，而标准JDK实现是"RSA/None/PKCS1Padding" ，这造成了在android机上加密后无法在服务器上解密的原因
81 | */
82 | public static final String ECB_PKCS1_PADDING = "RSA/ECB/PKCS1Padding";
83 |
84 | /**
85 | *
86 | * 生成KeyPair
87 | * @return
88 | * @throws Exception
89 | */
90 | public static Map generateKeyPair() throws Exception {
91 | KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);
92 | keyPairGen.initialize(KEYSIZE);
93 | KeyPair keyPair = keyPairGen.generateKeyPair();
94 |
95 | // 公钥
96 | RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
97 |
98 | // 私钥
99 | RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
100 | BigInteger modules = privateKey.getModulus();
101 |
102 | Map keys = new HashMap(3);
103 | keys.put(PUBLIC_KEY, publicKey);
104 | keys.put(PRIVATE_KEY, privateKey);
105 | keys.put(MODULES, modules);
106 | return keys;
107 | }
108 |
109 | public static byte[] getModulesBytes(Map keys) {
110 | BigInteger big = (BigInteger) keys.get(MODULES);
111 | return big.toByteArray();
112 | }
113 |
114 | /**
115 | *
116 | * 取得私钥
117 | * @return
118 | * @throws Exception
119 | */
120 | public static String getPrivateKeyBytes(Map keys) throws Exception {
121 | Key key = (Key) keys.get(PRIVATE_KEY);
122 | return Base64Utils.encode(key.getEncoded());
123 | }
124 |
125 | /**
126 | * 取得公钥
127 | *
128 | * @return
129 | * @throws Exception
130 | */
131 | public static String getPublicKeyBytes(Map keys) throws Exception {
132 | Key key = (Key) keys.get(PUBLIC_KEY);
133 | return Base64Utils.encode(key.getEncoded());
134 | }
135 |
136 | /**
137 | * 用私钥对信息生成数字签名
138 | *
139 | * @param data 已加密数据
140 | * @param privateKey 私钥(BASE64编码)
141 | *
142 | * @return
143 | * @throws Exception
144 | */
145 | public static String sign(byte[] data, String privateKey) throws Exception {
146 | PrivateKey privateK = loadPrivateKey(privateKey);
147 | Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
148 | signature.initSign(privateK);
149 | signature.update(data);
150 | return Base64Utils.encode(signature.sign());
151 | }
152 |
153 | /**
154 | * 校验数字签名
155 | *
156 | * @param data 已加密数据
157 | * @param publicKey 公钥(BASE64编码)
158 | * @param sign 数字签名
159 | *
160 | * @return
161 | * @throws Exception
162 | *
163 | */
164 | public static boolean verify(byte[] data, String publicKey, String sign)
165 | throws Exception {
166 | PublicKey publicK = loadPublicKey(publicKey);
167 | Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
168 | signature.initVerify(publicK);
169 | signature.update(data);
170 | return signature.verify(Base64Utils.decode(sign));
171 | }
172 |
173 | /**
174 | *
175 | * 通过私钥加密
176 | * @param encryptedData
177 | * @param key
178 | * @return
179 | * @throws Exception
180 | */
181 | public static byte[] encryptPrivateKey(byte[] encryptedData, String key) throws Exception {
182 | if (encryptedData == null){
183 | throw new IllegalArgumentException("Input encryption data is null");
184 | }
185 | byte[] encode = new byte[] {};
186 | for (int i = 0; i < encryptedData.length; i += encodeLen) {
187 | byte[] subarray = com.blakequ.rsa.ArrayUtils.subarray(encryptedData, i, i + encodeLen);
188 | byte[] doFinal = encryptByPrivateKey(subarray, key);
189 | encode = com.blakequ.rsa.ArrayUtils.addAll(encode, doFinal);
190 | }
191 | return encode;
192 | }
193 |
194 | /**
195 | * 通过公钥解密
196 | * @param encode
197 | * @param key
198 | * @return
199 | * @throws Exception
200 | */
201 | public static byte[] decryptPublicKey(byte[] encode, String key) throws Exception {
202 | if (encode == null){
203 | throw new IllegalArgumentException("Input encryption data is null");
204 | }
205 | byte [] buffers = new byte[]{};
206 | for (int i = 0; i < encode.length; i += decodeLen) {
207 | byte[] subarray = com.blakequ.rsa.ArrayUtils.subarray(encode, i, i + decodeLen);
208 | byte[] doFinal = decryptByPublicKey(subarray, key);
209 | buffers = com.blakequ.rsa.ArrayUtils.addAll(buffers, doFinal);
210 | }
211 | return buffers;
212 | }
213 |
214 | /**
215 | *
216 | * 通过公钥加密
217 | * @param encryptedData
218 | * @param key
219 | * @return
220 | * @throws Exception
221 | */
222 | public static byte[] encryptPublicKey(byte[] encryptedData, String key) throws Exception {
223 | if (encryptedData == null){
224 | throw new IllegalArgumentException("Input encryption data is null");
225 | }
226 | byte[] encode = new byte[] {};
227 | for (int i = 0; i < encryptedData.length; i += encodeLen) {
228 | byte[] subarray = com.blakequ.rsa.ArrayUtils.subarray(encryptedData, i, i + encodeLen);
229 | byte[] doFinal = encryptByPublicKey(subarray, key);
230 | encode = com.blakequ.rsa.ArrayUtils.addAll(encode, doFinal);
231 | }
232 | return encode;
233 | }
234 |
235 | /**
236 | * 通过私钥解密
237 | * @param encode
238 | * @param key
239 | * @return
240 | * @throws Exception
241 | */
242 | public static byte[] decryptPrivateKey(byte[] encode, String key) throws Exception {
243 | if (encode == null){
244 | throw new IllegalArgumentException("Input data is null");
245 | }
246 | byte [] buffers = new byte[]{};
247 | for (int i = 0; i < encode.length; i += decodeLen) {
248 | byte[] subarray = com.blakequ.rsa.ArrayUtils.subarray(encode, i, i + decodeLen);
249 | byte[] doFinal = decryptByPrivateKey(subarray, key);
250 | buffers = ArrayUtils.addAll(buffers, doFinal);
251 | }
252 | return buffers;
253 | }
254 |
255 | /**
256 | * 从字符串中加载公钥
257 | *
258 | * @param publicKeyStr 公钥数据字符串
259 | * @throws Exception 加载公钥时产生的异常
260 | */
261 | public static PublicKey loadPublicKey(String publicKeyStr) throws Exception {
262 | try {
263 | byte[] buffer = Base64Utils.decode(publicKeyStr);
264 | KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
265 | //表示根据 ASN.1 类型 SubjectPublicKeyInfo 进行编码的公用密钥的 ASN.1 编码。
266 | X509EncodedKeySpec keySpec = new X509EncodedKeySpec(buffer);
267 | return keyFactory.generatePublic(keySpec);
268 | } catch (NoSuchAlgorithmException e) {
269 | throw new Exception("无此算法");
270 | } catch (InvalidKeySpecException e) {
271 | throw new Exception("公钥非法");
272 | } catch (NullPointerException e) {
273 | throw new Exception("公钥数据为空");
274 | }
275 | }
276 |
277 | /**
278 | * 从字符串中加载私钥
279 | * 加载时使用的是PKCS8EncodedKeySpec（PKCS#8编码的Key指令）。
280 | *
281 | * @param privateKeyStr
282 | * @return
283 | * @throws Exception
284 | */
285 | public static PrivateKey loadPrivateKey(String privateKeyStr) throws Exception {
286 | try {
287 | byte[] buffer = Base64Utils.decode(privateKeyStr);
288 | //表示按照 ASN.1 类型 PrivateKeyInfo 进行编码的专用密钥的 ASN.1 编码。
289 | PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(buffer);
290 | KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
291 | return keyFactory.generatePrivate(keySpec);
292 | } catch (NoSuchAlgorithmException e) {
293 | throw new Exception("无此算法");
294 | } catch (InvalidKeySpecException e) {
295 | throw new Exception("私钥非法");
296 | } catch (NullPointerException e) {
297 | throw new Exception("私钥数据为空");
298 | }
299 | }
300 |
301 | /**
302 | * 从文件中输入流中加载公钥
303 | *
304 | * @param in 公钥输入流
305 | * @throws Exception 加载公钥时产生的异常
306 | */
307 | public static PublicKey loadPublicKey(InputStream in) throws Exception {
308 | try {
309 | return loadPublicKey(FileUtils.readString(in));
310 | } catch (IOException e) {
311 | throw new Exception("公钥数据流读取错误");
312 | } catch (NullPointerException e) {
313 | throw new Exception("公钥输入流为空");
314 | }
315 | }
316 |
317 | /**
318 | * 读取私钥
319 | *
320 | * @param in
321 | * @return
322 | * @throws Exception
323 | */
324 | public static PrivateKey loadPrivateKey(InputStream in) throws Exception {
325 | try {
326 | return loadPrivateKey(FileUtils.readString(in));
327 | } catch (IOException e) {
328 | throw new Exception("私钥数据读取错误");
329 | } catch (NullPointerException e) {
330 | throw new Exception("私钥输入流为空");
331 | }
332 | }
333 |
334 | /**
335 | * 用私钥解密
336 | * @param data
337 | * @param key
338 | * @return
339 | * @throws Exception
340 | */
341 | private static byte[] decryptByPrivateKey(byte[] data, String key) throws Exception {
342 | if (data == null){
343 | throw new IllegalArgumentException("Input data is null");
344 | }
345 | //取得私钥
346 | Key privateKey = loadPrivateKey(key);
347 | // 对数据解密
348 | Cipher cipher = Cipher.getInstance(ECB_PKCS1_PADDING);
349 | cipher.init(Cipher.DECRYPT_MODE, privateKey);
350 |
351 | return cipher.doFinal(data);
352 | }
353 |
354 | /**
355 | *
356 | * 用公钥解密
357 | * @param data
358 | * @param key
359 | * @return
360 | * @throws Exception
361 | */
362 | private static byte[] decryptByPublicKey(byte[] data, String key) throws Exception {
363 | if (data == null){
364 | throw new IllegalArgumentException("Input data is null");
365 | }
366 | //取得公钥
367 | Key publicKey = loadPublicKey(key);
368 | // 对数据解密
369 | Cipher cipher = Cipher.getInstance(ECB_PKCS1_PADDING);//publicKey.getAlgorithm()
370 | cipher.init(Cipher.DECRYPT_MODE, publicKey);
371 |
372 | return cipher.doFinal(data);
373 | }
374 |
375 | /**
376 | *
377 | * 用公钥加密
378 | * @param data
379 | * @param key
380 | * @return
381 | * @throws Exception
382 | */
383 | private static byte[] encryptByPublicKey(byte[] data, String key) throws Exception {
384 | if (data == null){
385 | throw new IllegalArgumentException("Input data is null");
386 | }
387 | // 取得公钥
388 | Key publicKey = loadPublicKey(key);
389 | // 对数据加密
390 | Cipher cipher = Cipher.getInstance(ECB_PKCS1_PADDING);
391 | cipher.init(Cipher.ENCRYPT_MODE, publicKey);
392 |
393 | return cipher.doFinal(data);
394 | }
395 |
396 | /**
397 | * 用私钥加密
398 | *
399 | * @param data
400 | * @param key
401 | * @return
402 | * @throws Exception
403 | */
404 | private static byte[] encryptByPrivateKey(byte[] data, String key) throws Exception {
405 | if (data == null){
406 | throw new IllegalArgumentException("Input data is null");
407 | }
408 | // 取得私钥
409 | Key privateKey = loadPrivateKey(key);
410 | // 对数据加密
411 | Cipher cipher = Cipher.getInstance(ECB_PKCS1_PADDING);
412 | cipher.init(Cipher.ENCRYPT_MODE, privateKey);
413 |
414 | return cipher.doFinal(data);
415 | }
416 |
417 | }
418 |
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/app/src/main/java/com/blakequ/rsademo/javalib/Shared.java:
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1 | /*
2 | * Java Base64 - A pure Java library for reading and writing Base64
3 | * encoded streams.
4 | *
5 | * Copyright (C) 2007-2009 Carlo Pelliccia (www.sauronsoftware.it)
6 | *
7 | * This program is free software: you can redistribute it and/or modify
8 | * it under the terms of the GNU Lesser General Public License version
9 | * 2.1, as published by the Free Software Foundation.
10 | *
11 | * This program is distributed in the hope that it will be useful,
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 | * GNU General Public License for more details.
15 | *
16 | * You should have received a copy of the GNU Lesser General Public
17 | * License version 2.1 along with this program.
18 | * If not, see .
19 | */
20 | package com.blakequ.rsademo.javalib;
21 |
22 | /**
23 | * Package related utilities.
24 | *
25 | * @author Carlo Pelliccia
26 | */
27 | class Shared {
28 |
29 | static String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
30 |
31 | static char pad = '=';
32 |
33 | }
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/app/src/main/res/drawable-hdpi/ic_launcher.png:
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/app/src/main/res/drawable-mdpi/ic_launcher.png:
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/app/src/main/res/drawable-xhdpi/ic_launcher.png:
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/app/src/main/res/layout/activity_grpctest.xml:
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/app/src/main/res/values-w820dp/dimens.xml:
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9 |
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2 |
3 | #3F51B5
4 | #303F9F
5 | #FF4081
6 |
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4 | 16dp
5 | 16dp
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2 |
3 |
4 | A-RSA
5 | Hello world!
6 | Settings
7 |
8 |
9 |
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/build.gradle:
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1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
2 | def getLocalProperty(String key) {
3 | if (!localPropertiesFile().exists()) {
4 | return null
5 | }
6 |
7 | Properties properties = new Properties()
8 | properties.load(localPropertiesFile().newDataInputStream())
9 | return properties.getProperty(key)
10 | }
11 |
12 | def localPropertiesFile() {
13 | return project.rootProject.file('local.properties');
14 | }
15 |
16 | def isForUpload2Maven() {
17 | return getLocalProperty("for.upload") == "true"
18 | }
19 |
20 | //获取当前时间
21 | def releaseTime() {
22 | return new Date().format("yyyyMMdd", TimeZone.getTimeZone("UTC"))
23 | }
24 |
25 | buildscript {
26 | repositories {
27 | mavenLocal()
28 | jcenter()
29 | maven {
30 | url "https://plugins.gradle.org/m2/"
31 | }
32 | }
33 | dependencies {
34 | classpath 'com.android.tools.build:gradle:2.3.0-beta4'
35 |
36 | File file = project.rootProject.file('local.properties')
37 | if (file.exists()) {
38 | Properties properties = new Properties()
39 | properties.load(file.newDataInputStream())
40 | boolean upload2maven = properties.getProperty("for.upload") == "true"
41 | if (upload2maven) {
42 | println ':global:include upload 2 maven classpath'
43 | classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.4'
44 | classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
45 | classpath "gradle.plugin.nl.javadude.gradle.plugins:license-gradle-plugin:0.13.1"
46 | }
47 | }
48 | }
49 | }
50 |
51 | allprojects {
52 | repositories {
53 | jcenter()
54 | mavenLocal()
55 | }
56 | }
57 |
58 | task clean(type: Delete) {
59 | delete rootProject.buildDir
60 | }
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/gradle.properties:
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1 | # Project-wide Gradle settings.
2 |
3 | # IDE (e.g. Android Studio) users:
4 | # Gradle settings configured through the IDE *will override*
5 | # any settings specified in this file.
6 |
7 | # For more details on how to configure your build environment visit
8 | # http://www.gradle.org/docs/current/userguide/build_environment.html
9 |
10 | # Specifies the JVM arguments used for the daemon process.
11 | # The setting is particularly useful for tweaking memory settings.
12 | # Default value: -Xmx10248m -XX:MaxPermSize=256m
13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
14 |
15 | # When configured, Gradle will run in incubating parallel mode.
16 | # This option should only be used with decoupled projects. More details, visit
17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
18 | # org.gradle.parallel=true
19 |
20 | # Android configuration
21 | COMPILE_SDK_VERSION=android-25
22 | BUILD_TOOLS_VERSION=25.0.0
23 | MIN_SDK_VERSION=18
24 | TARGET_SDK_VERSION = 23
25 |
26 | # Dependency versions
27 | SUPPORT_LIBRARY_VERSION=25.0.0
28 |
29 | # bintray
30 | GROUP=com.blakequ.rsa
31 | VERSION_CODE=2
32 | VERSION_NAME=1.1
33 | ARTIFACT_NAME=AndroidRSA
34 | SITE_URL=https://github.com/haodynasty/android-rsa
35 | ISSUE_URL=https://github.com/haodynasty/android-rsa/issues
36 | SCM_URL=https://github.com/haodynasty/android-rsa.git
37 | ARTIFACT_DESCRIPTION=android rsa encrypt and decrypt
38 | ISSUE_SYSTEM=github
39 | SCM_CONNECTION=scm:git@github.com:haodynasty/android-rsa.git
40 | SCM_DEV_CONNECTION=scm:git@github.com:haodynasty/android-rsa.git
41 | LICENCE_DIST=repo
42 | LICENCE_NAME=The Apache Software License, Version 2.0
43 | LICENCE_URL=http://www.apache.org/licenses/LICENSE-2.0.txt
44 | DEVELOPER_ID=haodynasty
45 | DEVELOPER_NAME=Blakequ
46 | DEVELOPER_EMAIL=blakequ@gmail.com
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/gradle/wrapper/gradle-wrapper.jar:
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/gradle/wrapper/gradle-wrapper.properties:
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1 | #Wed Feb 22 10:24:55 CST 2017
2 | distributionBase=GRADLE_USER_HOME
3 | distributionPath=wrapper/dists
4 | zipStoreBase=GRADLE_USER_HOME
5 | zipStorePath=wrapper/dists
6 | distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
7 |
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/gradlew:
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1 | #!/usr/bin/env bash
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
10 | DEFAULT_JVM_OPTS=""
11 |
12 | APP_NAME="Gradle"
13 | APP_BASE_NAME=`basename "$0"`
14 |
15 | # Use the maximum available, or set MAX_FD != -1 to use that value.
16 | MAX_FD="maximum"
17 |
18 | warn ( ) {
19 | echo "$*"
20 | }
21 |
22 | die ( ) {
23 | echo
24 | echo "$*"
25 | echo
26 | exit 1
27 | }
28 |
29 | # OS specific support (must be 'true' or 'false').
30 | cygwin=false
31 | msys=false
32 | darwin=false
33 | case "`uname`" in
34 | CYGWIN* )
35 | cygwin=true
36 | ;;
37 | Darwin* )
38 | darwin=true
39 | ;;
40 | MINGW* )
41 | msys=true
42 | ;;
43 | esac
44 |
45 | # Attempt to set APP_HOME
46 | # Resolve links: $0 may be a link
47 | PRG="$0"
48 | # Need this for relative symlinks.
49 | while [ -h "$PRG" ] ; do
50 | ls=`ls -ld "$PRG"`
51 | link=`expr "$ls" : '.*-> \(.*\)$'`
52 | if expr "$link" : '/.*' > /dev/null; then
53 | PRG="$link"
54 | else
55 | PRG=`dirname "$PRG"`"/$link"
56 | fi
57 | done
58 | SAVED="`pwd`"
59 | cd "`dirname \"$PRG\"`/" >/dev/null
60 | APP_HOME="`pwd -P`"
61 | cd "$SAVED" >/dev/null
62 |
63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
64 |
65 | # Determine the Java command to use to start the JVM.
66 | if [ -n "$JAVA_HOME" ] ; then
67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
68 | # IBM's JDK on AIX uses strange locations for the executables
69 | JAVACMD="$JAVA_HOME/jre/sh/java"
70 | else
71 | JAVACMD="$JAVA_HOME/bin/java"
72 | fi
73 | if [ ! -x "$JAVACMD" ] ; then
74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
75 |
76 | Please set the JAVA_HOME variable in your environment to match the
77 | location of your Java installation."
78 | fi
79 | else
80 | JAVACMD="java"
81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
82 |
83 | Please set the JAVA_HOME variable in your environment to match the
84 | location of your Java installation."
85 | fi
86 |
87 | # Increase the maximum file descriptors if we can.
88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
89 | MAX_FD_LIMIT=`ulimit -H -n`
90 | if [ $? -eq 0 ] ; then
91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
92 | MAX_FD="$MAX_FD_LIMIT"
93 | fi
94 | ulimit -n $MAX_FD
95 | if [ $? -ne 0 ] ; then
96 | warn "Could not set maximum file descriptor limit: $MAX_FD"
97 | fi
98 | else
99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
100 | fi
101 | fi
102 |
103 | # For Darwin, add options to specify how the application appears in the dock
104 | if $darwin; then
105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
106 | fi
107 |
108 | # For Cygwin, switch paths to Windows format before running java
109 | if $cygwin ; then
110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
112 | JAVACMD=`cygpath --unix "$JAVACMD"`
113 |
114 | # We build the pattern for arguments to be converted via cygpath
115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
116 | SEP=""
117 | for dir in $ROOTDIRSRAW ; do
118 | ROOTDIRS="$ROOTDIRS$SEP$dir"
119 | SEP="|"
120 | done
121 | OURCYGPATTERN="(^($ROOTDIRS))"
122 | # Add a user-defined pattern to the cygpath arguments
123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
125 | fi
126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
127 | i=0
128 | for arg in "$@" ; do
129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
131 |
132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
134 | else
135 | eval `echo args$i`="\"$arg\""
136 | fi
137 | i=$((i+1))
138 | done
139 | case $i in
140 | (0) set -- ;;
141 | (1) set -- "$args0" ;;
142 | (2) set -- "$args0" "$args1" ;;
143 | (3) set -- "$args0" "$args1" "$args2" ;;
144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
150 | esac
151 | fi
152 |
153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
154 | function splitJvmOpts() {
155 | JVM_OPTS=("$@")
156 | }
157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
159 |
160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
161 |
--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
1 | @if "%DEBUG%" == "" @echo off
2 | @rem ##########################################################################
3 | @rem
4 | @rem Gradle startup script for Windows
5 | @rem
6 | @rem ##########################################################################
7 |
8 | @rem Set local scope for the variables with windows NT shell
9 | if "%OS%"=="Windows_NT" setlocal
10 |
11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
12 | set DEFAULT_JVM_OPTS=
13 |
14 | set DIRNAME=%~dp0
15 | if "%DIRNAME%" == "" set DIRNAME=.
16 | set APP_BASE_NAME=%~n0
17 | set APP_HOME=%DIRNAME%
18 |
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 |
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 |
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 |
32 | goto fail
33 |
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 |
38 | if exist "%JAVA_EXE%" goto init
39 |
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 |
46 | goto fail
47 |
48 | :init
49 | @rem Get command-line arguments, handling Windowz variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 | if "%@eval[2+2]" == "4" goto 4NT_args
53 |
54 | :win9xME_args
55 | @rem Slurp the command line arguments.
56 | set CMD_LINE_ARGS=
57 | set _SKIP=2
58 |
59 | :win9xME_args_slurp
60 | if "x%~1" == "x" goto execute
61 |
62 | set CMD_LINE_ARGS=%*
63 | goto execute
64 |
65 | :4NT_args
66 | @rem Get arguments from the 4NT Shell from JP Software
67 | set CMD_LINE_ARGS=%$
68 |
69 | :execute
70 | @rem Setup the command line
71 |
72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
73 |
74 | @rem Execute Gradle
75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
76 |
77 | :end
78 | @rem End local scope for the variables with windows NT shell
79 | if "%ERRORLEVEL%"=="0" goto mainEnd
80 |
81 | :fail
82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
83 | rem the _cmd.exe /c_ return code!
84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
85 | exit /b 1
86 |
87 | :mainEnd
88 | if "%OS%"=="Windows_NT" endlocal
89 |
90 | :omega
91 |
--------------------------------------------------------------------------------
/import-summary.txt:
--------------------------------------------------------------------------------
1 | ECLIPSE ANDROID PROJECT IMPORT SUMMARY
2 | ======================================
3 |
4 | Ignored Files:
5 | --------------
6 | The following files were *not* copied into the new Gradle project; you
7 | should evaluate whether these are still needed in your project and if
8 | so manually move them:
9 |
10 | * ic_launcher-web.png
11 | * proguard-project.txt
12 |
13 | Replaced Jars with Dependencies:
14 | --------------------------------
15 | The importer recognized the following .jar files as third party
16 | libraries and replaced them with Gradle dependencies instead. This has
17 | the advantage that more explicit version information is known, and the
18 | libraries can be updated automatically. However, it is possible that
19 | the .jar file in your project was of an older version than the
20 | dependency we picked, which could render the project not compileable.
21 | You can disable the jar replacement in the import wizard and try again:
22 |
23 | android-support-v4.jar => com.android.support:support-v4:20.0.0
24 |
25 | Moved Files:
26 | ------------
27 | Android Gradle projects use a different directory structure than ADT
28 | Eclipse projects. Here's how the projects were restructured:
29 |
30 | * AndroidManifest.xml => app\src\main\AndroidManifest.xml
31 | * assets\ => app\src\main\assets\
32 | * res\ => app\src\main\res\
33 | * src\ => app\src\main\java\
34 |
35 | Next Steps:
36 | -----------
37 | You can now build the project. The Gradle project needs network
38 | connectivity to download dependencies.
39 |
40 | Bugs:
41 | -----
42 | If for some reason your project does not build, and you determine that
43 | it is due to a bug or limitation of the Eclipse to Gradle importer,
44 | please file a bug at http://b.android.com with category
45 | Component-Tools.
46 |
47 | (This import summary is for your information only, and can be deleted
48 | after import once you are satisfied with the results.)
49 |
--------------------------------------------------------------------------------
/rsa/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 |
--------------------------------------------------------------------------------
/rsa/build.gradle:
--------------------------------------------------------------------------------
1 | apply plugin: 'com.android.library'
2 |
3 | android {
4 | compileSdkVersion COMPILE_SDK_VERSION
5 | buildToolsVersion BUILD_TOOLS_VERSION as String
6 |
7 | defaultConfig {
8 | minSdkVersion MIN_SDK_VERSION
9 | targetSdkVersion TARGET_SDK_VERSION
10 | versionCode VERSION_CODE as int
11 | versionName VERSION_NAME as String
12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
13 |
14 | }
15 | buildTypes {
16 | release {
17 | minifyEnabled false
18 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
19 | }
20 | }
21 | }
22 |
23 | task jarLib(type: Jar, dependsOn: ['build']) {
24 | archiveName = 'rsa_encrypt.jar'
25 | from('build/intermediates/classes/release')
26 | destinationDir = file('build/libs')
27 | exclude('com/nought/hellolib/BuildConfig.class')
28 | exclude('com/nought/hellolib/BuildConfig\$*.class')
29 | exclude('**/R.class')
30 | exclude('**/R\$*.class')
31 | // include('com/nought/hellolib/*.class')
32 | }
33 |
34 | dependencies {
35 | compile fileTree(dir: 'libs', include: ['*.jar'])
36 | androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
37 | exclude group: 'com.android.support', module: 'support-annotations'
38 | })
39 | compile 'com.android.support:appcompat-v7:25.0.0'
40 | testCompile 'junit:junit:4.12'
41 | }
42 |
43 | //执行bintrayUpload之前必须执行gradlew install生成poms文件（build/poms）
44 | if (isForUpload2Maven()) {
45 | println ':library:include upload 2 maven methods'
46 | apply from: 'https://raw.githubusercontent.com/haodynasty/JCenter/master/installv1.gradle'
47 | apply from: 'https://raw.githubusercontent.com/haodynasty/JCenter/master/bintrayv1.gradle'
48 | apply from: 'https://raw.githubusercontent.com/haodynasty/JCenter/master/license.gradle'
49 | }
50 |
--------------------------------------------------------------------------------
/rsa/proguard-rules.pro:
--------------------------------------------------------------------------------
1 | # Add project specific ProGuard rules here.
2 | # By default, the flags in this file are appended to flags specified
3 | # in D:\studio_sdk/tools/proguard/proguard-android.txt
4 | # You can edit the include path and order by changing the proguardFiles
5 | # directive in build.gradle.
6 | #
7 | # For more details, see
8 | # http://developer.android.com/guide/developing/tools/proguard.html
9 |
10 | # Add any project specific keep options here:
11 |
12 | # If your project uses WebView with JS, uncomment the following
13 | # and specify the fully qualified class name to the JavaScript interface
14 | # class:
15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
16 | # public *;
17 | #}
18 |
19 | # Uncomment this to preserve the line number information for
20 | # debugging stack traces.
21 | #-keepattributes SourceFile,LineNumberTable
22 |
23 | # If you keep the line number information, uncomment this to
24 | # hide the original source file name.
25 | #-renamesourcefileattribute SourceFile
26 |
--------------------------------------------------------------------------------
/rsa/src/androidTest/java/com/blakequ/rsa/ExampleInstrumentedTest.java:
--------------------------------------------------------------------------------
1 | package com.blakequ.rsa;
2 |
3 | import android.content.Context;
4 | import android.support.test.InstrumentationRegistry;
5 | import android.support.test.runner.AndroidJUnit4;
6 |
7 | import org.junit.Test;
8 | import org.junit.runner.RunWith;
9 |
10 | import static org.junit.Assert.*;
11 |
12 | /**
13 | * Instrumentation test, which will execute on an Android device.
14 | *
15 | * @see Testing documentation
16 | */
17 | @RunWith(AndroidJUnit4.class)
18 | public class ExampleInstrumentedTest {
19 | @Test
20 | public void useAppContext() throws Exception {
21 | // Context of the app under test.
22 | Context appContext = InstrumentationRegistry.getTargetContext();
23 |
24 | assertEquals("com.blakequ.rsa.test", appContext.getPackageName());
25 | }
26 | }
27 |
--------------------------------------------------------------------------------
/rsa/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
1 |
4 |
5 |
6 |
7 |
8 |
10 |
11 |
12 |
13 |
14 |
--------------------------------------------------------------------------------
/rsa/src/main/java/com/blakequ/rsa/ArrayUtils.java:
--------------------------------------------------------------------------------
1 | package com.blakequ.rsa;
2 |
3 | /**
4 | *
This class tries to handle {@code null} input gracefully.
8 | * An exception will not be thrown for a {@code null}
9 | * array input. However, an Object array that contains a {@code null}
10 | * element may throw an exception. Each method documents its behaviour.
11 | *
12 | *
#ThreadSafe#
13 | * @since 2.0
14 | */
15 |
16 | public class ArrayUtils {
17 |
18 | /**
19 | * An empty immutable {@code byte} array.
20 | */
21 | public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
22 |
23 |
24 | /**
25 | * Copies the specified range of the specified array into a new array.
26 | * The initial index of the range (from) must lie between zero
27 | * and original.length, inclusive. The value at
28 | * original[from] is placed into the initial element of the copy
29 | * (unless from == original.length or from == to).
30 | * Values from subsequent elements in the original array are placed into
31 | * subsequent elements in the copy. The final index of the range
32 | * (to), which must be greater than or equal to from,
33 | * may be greater than original.length, in which case
34 | * (byte)0 is placed in all elements of the copy whose index is
35 | * greater than or equal to original.length - from. The length
36 | * of the returned array will be to - from.
37 | *
38 | * @param original the array from which a range is to be copied
39 | * @param from the initial index of the range to be copied, inclusive
40 | * @param to the final index of the range to be copied, exclusive.
41 | * (This index may lie outside the array.)
42 | * @return a new array containing the specified range from the original array,
43 | * truncated or padded with zeros to obtain the required length
44 | * @throws ArrayIndexOutOfBoundsException if {@code from < 0}
45 | * or {@code from > original.length}
46 | * @throws IllegalArgumentException if from > to
47 | * @throws NullPointerException if original is null
48 | * @since 1.6
49 | */
50 | public static byte[] copyOfRange(byte[] original, int from, int to) {
51 | int newLength = to - from;
52 | if (newLength < 0)
53 | throw new IllegalArgumentException(from + " > " + to);
54 | byte[] copy = new byte[newLength];
55 | System.arraycopy(original, from, copy, 0,
56 | Math.min(original.length - from, newLength));
57 | return copy;
58 | }
59 |
60 | /**
61 | *
Produces a new {@code byte} array containing the elements
62 | * between the start and end indices.
63 | *
64 | *
The start index is inclusive, the end index exclusive.
65 | * Null array input produces null output.
66 | *
67 | * @param array the array
68 | * @param startIndexInclusive the starting index. Undervalue (<0)
69 | * is promoted to 0, overvalue (>array.length) results
70 | * in an empty array.
71 | * @param endIndexExclusive elements up to endIndex-1 are present in the
72 | * returned subarray. Undervalue (< startIndex) produces
73 | * empty array, overvalue (>array.length) is demoted to
74 | * array length.
75 | * @return a new array containing the elements between
76 | * the start and end indices.
77 | * @since 2.1
78 | */
79 | public static byte[] subarray(final byte[] array, int startIndexInclusive, int endIndexExclusive) {
80 | if (array == null) {
81 | return null;
82 | }
83 | if (startIndexInclusive < 0) {
84 | startIndexInclusive = 0;
85 | }
86 | if (endIndexExclusive > array.length) {
87 | endIndexExclusive = array.length;
88 | }
89 | final int newSize = endIndexExclusive - startIndexInclusive;
90 | if (newSize <= 0) {
91 | return EMPTY_BYTE_ARRAY;
92 | }
93 |
94 | final byte[] subarray = new byte[newSize];
95 | System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
96 | return subarray;
97 | }
98 |
99 | /**
100 | *
Adds all the elements of the given arrays into a new array.
101 | *
The new array contains all of the element of {@code array1} followed
102 | * by all of the elements {@code array2}. When an array is returned, it is always
103 | * a new array.
104 | *
105 | *
15 | * Licensed under the blakequ.com License, Version 1.0 (the "License");
16 | * Unless required by applicable law or agreed to in writing, software
17 | * distributed under the License is distributed on an "AS IS" BASIS,
18 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 | * See the License for the specific language governing permissions and
20 | * limitations under the License.
21 | *
1. first step: set public and private key. 如果输入的秘钥（公钥和私钥）都是经过Base64.encode处理的，Base64Utils.encode(key.getEncoded())，如果是自己生成的需要先行处理
29 | *
2. encrypt and decrypt file by method
30 | */
31 |
32 | public class FileEncryptionManager {
33 | private static FileEncryptionManager INSTANCE;
34 | private String publicKey;
35 | private String privateKey;
36 |
37 | private FileEncryptionManager() {
38 | }
39 |
40 | public static FileEncryptionManager getInstance(){
41 | if (INSTANCE == null){
42 | INSTANCE = new FileEncryptionManager();
43 | }
44 | return INSTANCE;
45 | }
46 |
47 | /**
48 | * set the key of encrypt and decrypt
49 | * @param publicKey
50 | * @param privateKey
51 | * @param isEncode is encoded by Base64
52 | * @see com.blakequ.rsa.Base64Utils#encode
53 | * @see #generateKey() ()
54 | */
55 | public void setRSAKey(String publicKey, String privateKey, boolean isEncode) throws Exception {
56 | if (isEncode){
57 | this.publicKey = publicKey;
58 | this.privateKey = privateKey;
59 | }else {
60 | this.publicKey = Base64Utils.encode(publicKey.getBytes());
61 | this.privateKey = Base64Utils.encode(privateKey.getBytes());
62 | }
63 | }
64 |
65 | /**
66 | * set the key of encrypt and decrypt
67 | * @param publicKey
68 | * @param privateKey
69 | * @see #generateKey() ()
70 | */
71 | public void setRSAKey(RSAPublicKey publicKey, RSAPrivateKey privateKey) throws Exception {
72 | this.publicKey = Base64Utils.encode(publicKey.getEncoded());
73 | this.privateKey = Base64Utils.encode(privateKey.getEncoded());
74 | }
75 |
76 | /**
77 | * generate public and private key
78 | * @throws Exception
79 | * @see #setRSAKey(RSAPublicKey, RSAPrivateKey)
80 | * @see #setRSAKey(String, String, boolean)
81 | */
82 | public void generateKey() throws Exception {
83 | Map map = RSAProvider.generateKeyPair();
84 | this.privateKey = RSAProvider.getPrivateKeyBytes(map);
85 | this.publicKey = RSAProvider.getPublicKeyBytes(map);
86 | }
87 |
88 | public String getPublicKey() {
89 | return publicKey;
90 | }
91 |
92 | public String getPrivateKey() {
93 | return privateKey;
94 | }
95 |
96 | /**
97 | * sign data by private key
98 | * @param data the data by encrypted
99 | * @return
100 | * @throws Exception
101 | * @see #verifyByPublicKey(byte[], String)
102 | */
103 | public String signByPrivateKey(byte[] data) throws Exception {
104 | if (privateKey == null || privateKey.isEmpty()){
105 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
106 | }
107 | return RSAProvider.sign(data, privateKey);
108 | }
109 |
110 | /**
111 | * verify data by sign
112 | * @param data the data by encrypted
113 | * @param sign
114 | * @return
115 | * @throws Exception
116 | * @see #signByPrivateKey(byte[])
117 | */
118 | public boolean verifyByPublicKey(byte[] data, String sign) throws Exception {
119 | if (publicKey == null || publicKey.isEmpty()){
120 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
121 | }
122 | return RSAProvider.verify(data, publicKey, sign);
123 | }
124 |
125 | /**
126 | * encrypt by public key
127 | * @param data
128 | * @return
129 | * @throws Exception
130 | */
131 | public byte[] encryptByPublicKey(byte[] data) throws Exception {
132 | if (publicKey == null || publicKey.isEmpty()){
133 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
134 | }
135 | return encryptPublicKey(data, publicKey);
136 | }
137 |
138 | /**
139 | * decrypt by private key
140 | * @param data
141 | * @return
142 | * @throws Exception
143 | */
144 | public byte[] decryptByPrivateKey(byte[] data) throws Exception {
145 | if (privateKey == null || privateKey.isEmpty()){
146 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
147 | }
148 | return RSAProvider.decryptPrivateKey(data, privateKey);
149 | }
150 |
151 | /**
152 | * encrypt by private key
153 | * @param data
154 | * @return
155 | * @throws Exception
156 | */
157 | public byte[] encryptByPrivateKey(byte[] data) throws Exception {
158 | if (privateKey == null || privateKey.isEmpty()){
159 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
160 | }
161 | return encryptPublicKey(data, privateKey);
162 | }
163 |
164 | /**
165 | * decrypt by public key
166 | * @param data
167 | * @return
168 | * @throws Exception
169 | */
170 | public byte[] decryptByPublicKey(byte[] data) throws Exception {
171 | if (publicKey == null || publicKey.isEmpty()){
172 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
173 | }
174 | return RSAProvider.decryptPrivateKey(data, publicKey);
175 | }
176 |
177 | /**
178 | * using public key encrypt file
179 | * @param inputFile the file of wait to encrypt
180 | * @param outFile
181 | * @return encrypted data
182 | */
183 | public byte[] encryptFileByPublicKey(File inputFile, File outFile) throws Exception {
184 | if (publicKey == null || publicKey.isEmpty()){
185 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
186 | }
187 | byte[] data = FileUtils.getDataFromFile(inputFile);
188 | byte[] encryData = RSAProvider.encryptPublicKey(data, publicKey);
189 | if (outFile != null){
190 | boolean result = FileUtils.saveDataToFile(encryData, outFile);
191 | Log.d("FileEncryptionManager", "save file result "+result);
192 | }
193 | return encryData;
194 | }
195 |
196 | /**
197 | * using private key decrypt file
198 | * @param inputFile the file is encrypted
199 | * @param outFile
200 | * @return origial data by decrypted
201 | */
202 | public byte[] decryptFileByPrivateKey(File inputFile, File outFile) throws Exception {
203 | if (privateKey == null || privateKey.isEmpty()){
204 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
205 | }
206 | byte[] data = FileUtils.getDataFromFile(inputFile);
207 | byte[] decryData = RSAProvider.decryptPrivateKey(data, privateKey);
208 | if (outFile != null){
209 | boolean result = FileUtils.saveDataToFile(decryData, outFile);
210 | Log.d("FileEncryptionManager", "save file result "+result);
211 | }
212 | return decryData;
213 | }
214 |
215 | /**
216 | * using public key encrypt file
217 | * @param inputData the file of wait to encrypt
218 | * @param outFile
219 | * @return encrypted data
220 | */
221 | public byte[] encryptFileByPublicKey(byte[] inputData, File outFile) throws Exception {
222 | if (publicKey == null || publicKey.isEmpty()){
223 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
224 | }
225 | byte[] encryData = RSAProvider.encryptPublicKey(inputData, publicKey);
226 | if (outFile != null){
227 | boolean result = FileUtils.saveDataToFile(encryData, outFile);
228 | Log.d("FileEncryptionManager", "save file result "+result);
229 | }
230 | return encryData;
231 | }
232 |
233 | /**
234 | * using private key decrypt file
235 | * @param inputData the file is encrypted
236 | * @param outFile
237 | * @return origial data by decrypted
238 | */
239 | public byte[] decryptFileByPrivateKey(byte[] inputData, File outFile) throws Exception {
240 | if (privateKey == null || privateKey.isEmpty()){
241 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
242 | }
243 | byte[] decryData = RSAProvider.decryptPrivateKey(inputData, privateKey);
244 | if (outFile != null){
245 | boolean result = FileUtils.saveDataToFile(decryData, outFile);
246 | Log.d("FileEncryptionManager", "save file result "+result);
247 | }
248 | return decryData;
249 | }
250 |
251 | /**
252 | * using private key encrypt file
253 | * @param inputFile the file of wait to encrypt
254 | * @param outFile
255 | * @return encrypted data
256 | */
257 | public byte[] encryptFileByPrivateKey(File inputFile, File outFile) throws Exception {
258 | if (privateKey == null || privateKey.isEmpty()){
259 | throw new IllegalArgumentException("PrivateKey is empty, you should invoke setRSAKey or generateKey");
260 | }
261 | byte[] data = FileUtils.getDataFromFile(inputFile);
262 | byte[] encryData = RSAProvider.encryptPrivateKey(data, privateKey);
263 | if (outFile != null){
264 | boolean result = FileUtils.saveDataToFile(encryData, outFile);
265 | Log.d("FileEncryptionManager", "save file result "+result);
266 | }
267 | return encryData;
268 | }
269 |
270 | /**
271 | * using public key decrypt file
272 | * @param inputFile the file is encrypted
273 | * @param outFile
274 | * @return origial data by decrypted
275 | */
276 | public byte[] decryptFileByPublicKey(File inputFile, File outFile) throws Exception {
277 | if (publicKey == null || publicKey.isEmpty()){
278 | throw new IllegalArgumentException("PublicKey is empty, you should invoke setRSAKey or generateKey");
279 | }
280 | byte[] data = FileUtils.getDataFromFile(inputFile);
281 | byte[] decryData = RSAProvider.decryptPublicKey(data, publicKey);
282 | if (outFile != null){
283 | boolean result = FileUtils.saveDataToFile(decryData, outFile);
284 | Log.d("FileEncryptionManager", "save file result "+result);
285 | }
286 | return decryData;
287 | }
288 | }
289 |
--------------------------------------------------------------------------------
/rsa/src/main/java/com/blakequ/rsa/FileUtils.java:
--------------------------------------------------------------------------------
1 | package com.blakequ.rsa;
2 |
3 | import java.io.BufferedReader;
4 | import java.io.ByteArrayOutputStream;
5 | import java.io.File;
6 | import java.io.FileInputStream;
7 | import java.io.FileNotFoundException;
8 | import java.io.FileOutputStream;
9 | import java.io.IOException;
10 | import java.io.InputStream;
11 | import java.io.InputStreamReader;
12 |
13 | /**
14 | * Copyright (C) BlakeQu All Rights Reserved
15 | *
16 | * Licensed under the blakequ.com License, Version 1.0 (the "License");
17 | * Unless required by applicable law or agreed to in writing, software
18 | * distributed under the License is distributed on an "AS IS" BASIS,
19 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 | * See the License for the specific language governing permissions and
21 | * limitations under the License.
22 | *
27 | * Licensed under the blakequ.com License, Version 1.0 (the "License");
28 | * Unless required by applicable law or agreed to in writing, software
29 | * distributed under the License is distributed on an "AS IS" BASIS,
30 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
31 | * See the License for the specific language governing permissions and
32 | * limitations under the License.
33 | *