├── .gitignore
├── LICENSE
├── README.md
├── aescrypt
├── .gitignore
├── build.gradle
├── gradle.properties
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── com
│ │ └── scottyab
│ │ └── aescrypt
│ │ └── ApplicationTest.java
│ └── main
│ ├── AndroidManifest.xml
│ └── java
│ └── com
│ └── scottyab
│ └── aescrypt
│ └── AESCrypt.java
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle
/.gitignore:
--------------------------------------------------------------------------------
1 | # gimpy mac thingy
2 | .DS_Store
3 |
4 | # IDEA Ignores
5 | *.iml
6 | *.ipr
7 | *.iws
8 | .idea/
9 |
10 | # Local configuration file (sdk path, etc)
11 | local.properties
12 |
13 |
14 | # Generic Android ignores
15 | bin/
16 | target
17 | gen/
18 |
19 | # Built application files
20 | *.apk
21 | *.ap_
22 |
23 | # Files for the Dalvik VM
24 | *.dex
25 |
26 | # Java class files
27 | *.class
28 |
29 | # Gradle files
30 | .gradle/
31 | build/
32 |
33 | # Proguard folder generated by Eclipse
34 | proguard/
35 |
36 | #Log Files
37 | *.log
38 |
39 |
40 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | Apache License
2 | Version 2.0, January 2004
3 | http://www.apache.org/licenses/
4 |
5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
6 |
7 | 1. Definitions.
8 |
9 | "License" shall mean the terms and conditions for use, reproduction,
10 | and distribution as defined by Sections 1 through 9 of this document.
11 |
12 | "Licensor" shall mean the copyright owner or entity authorized by
13 | the copyright owner that is granting the License.
14 |
15 | "Legal Entity" shall mean the union of the acting entity and all
16 | other entities that control, are controlled by, or are under common
17 | control with that entity. For the purposes of this definition,
18 | "control" means (i) the power, direct or indirect, to cause the
19 | direction or management of such entity, whether by contract or
20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the
21 | outstanding shares, or (iii) beneficial ownership of such entity.
22 |
23 | "You" (or "Your") shall mean an individual or Legal Entity
24 | exercising permissions granted by this License.
25 |
26 | "Source" form shall mean the preferred form for making modifications,
27 | including but not limited to software source code, documentation
28 | source, and configuration files.
29 |
30 | "Object" form shall mean any form resulting from mechanical
31 | transformation or translation of a Source form, including but
32 | not limited to compiled object code, generated documentation,
33 | and conversions to other media types.
34 |
35 | "Work" shall mean the work of authorship, whether in Source or
36 | Object form, made available under the License, as indicated by a
37 | copyright notice that is included in or attached to the work
38 | (an example is provided in the Appendix below).
39 |
40 | "Derivative Works" shall mean any work, whether in Source or Object
41 | form, that is based on (or derived from) the Work and for which the
42 | editorial revisions, annotations, elaborations, or other modifications
43 | represent, as a whole, an original work of authorship. For the purposes
44 | of this License, Derivative Works shall not include works that remain
45 | separable from, or merely link (or bind by name) to the interfaces of,
46 | the Work and Derivative Works thereof.
47 |
48 | "Contribution" shall mean any work of authorship, including
49 | the original version of the Work and any modifications or additions
50 | to that Work or Derivative Works thereof, that is intentionally
51 | submitted to Licensor for inclusion in the Work by the copyright owner
52 | or by an individual or Legal Entity authorized to submit on behalf of
53 | the copyright owner. For the purposes of this definition, "submitted"
54 | means any form of electronic, verbal, or written communication sent
55 | to the Licensor or its representatives, including but not limited to
56 | communication on electronic mailing lists, source code control systems,
57 | and issue tracking systems that are managed by, or on behalf of, the
58 | Licensor for the purpose of discussing and improving the Work, but
59 | excluding communication that is conspicuously marked or otherwise
60 | designated in writing by the copyright owner as "Not a Contribution."
61 |
62 | "Contributor" shall mean Licensor and any individual or Legal Entity
63 | on behalf of whom a Contribution has been received by Licensor and
64 | subsequently incorporated within the Work.
65 |
66 | 2. Grant of Copyright License. Subject to the terms and conditions of
67 | this License, each Contributor hereby grants to You a perpetual,
68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable
69 | copyright license to reproduce, prepare Derivative Works of,
70 | publicly display, publicly perform, sublicense, and distribute the
71 | Work and such Derivative Works in Source or Object form.
72 |
73 | 3. Grant of Patent License. Subject to the terms and conditions of
74 | this License, each Contributor hereby grants to You a perpetual,
75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable
76 | (except as stated in this section) patent license to make, have made,
77 | use, offer to sell, sell, import, and otherwise transfer the Work,
78 | where such license applies only to those patent claims licensable
79 | by such Contributor that are necessarily infringed by their
80 | Contribution(s) alone or by combination of their Contribution(s)
81 | with the Work to which such Contribution(s) was submitted. If You
82 | institute patent litigation against any entity (including a
83 | cross-claim or counterclaim in a lawsuit) alleging that the Work
84 | or a Contribution incorporated within the Work constitutes direct
85 | or contributory patent infringement, then any patent licenses
86 | granted to You under this License for that Work shall terminate
87 | as of the date such litigation is filed.
88 |
89 | 4. Redistribution. You may reproduce and distribute copies of the
90 | Work or Derivative Works thereof in any medium, with or without
91 | modifications, and in Source or Object form, provided that You
92 | meet the following conditions:
93 |
94 | (a) You must give any other recipients of the Work or
95 | Derivative Works a copy of this License; and
96 |
97 | (b) You must cause any modified files to carry prominent notices
98 | stating that You changed the files; and
99 |
100 | (c) You must retain, in the Source form of any Derivative Works
101 | that You distribute, all copyright, patent, trademark, and
102 | attribution notices from the Source form of the Work,
103 | excluding those notices that do not pertain to any part of
104 | the Derivative Works; and
105 |
106 | (d) If the Work includes a "NOTICE" text file as part of its
107 | distribution, then any Derivative Works that You distribute must
108 | include a readable copy of the attribution notices contained
109 | within such NOTICE file, excluding those notices that do not
110 | pertain to any part of the Derivative Works, in at least one
111 | of the following places: within a NOTICE text file distributed
112 | as part of the Derivative Works; within the Source form or
113 | documentation, if provided along with the Derivative Works; or,
114 | within a display generated by the Derivative Works, if and
115 | wherever such third-party notices normally appear. The contents
116 | of the NOTICE file are for informational purposes only and
117 | do not modify the License. You may add Your own attribution
118 | notices within Derivative Works that You distribute, alongside
119 | or as an addendum to the NOTICE text from the Work, provided
120 | that such additional attribution notices cannot be construed
121 | as modifying the License.
122 |
123 | You may add Your own copyright statement to Your modifications and
124 | may provide additional or different license terms and conditions
125 | for use, reproduction, or distribution of Your modifications, or
126 | for any such Derivative Works as a whole, provided Your use,
127 | reproduction, and distribution of the Work otherwise complies with
128 | the conditions stated in this License.
129 |
130 | 5. Submission of Contributions. Unless You explicitly state otherwise,
131 | any Contribution intentionally submitted for inclusion in the Work
132 | by You to the Licensor shall be under the terms and conditions of
133 | this License, without any additional terms or conditions.
134 | Notwithstanding the above, nothing herein shall supersede or modify
135 | the terms of any separate license agreement you may have executed
136 | with Licensor regarding such Contributions.
137 |
138 | 6. Trademarks. This License does not grant permission to use the trade
139 | names, trademarks, service marks, or product names of the Licensor,
140 | except as required for reasonable and customary use in describing the
141 | origin of the Work and reproducing the content of the NOTICE file.
142 |
143 | 7. Disclaimer of Warranty. Unless required by applicable law or
144 | agreed to in writing, Licensor provides the Work (and each
145 | Contributor provides its Contributions) on an "AS IS" BASIS,
146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
147 | implied, including, without limitation, any warranties or conditions
148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
149 | PARTICULAR PURPOSE. You are solely responsible for determining the
150 | appropriateness of using or redistributing the Work and assume any
151 | risks associated with Your exercise of permissions under this License.
152 |
153 | 8. Limitation of Liability. In no event and under no legal theory,
154 | whether in tort (including negligence), contract, or otherwise,
155 | unless required by applicable law (such as deliberate and grossly
156 | negligent acts) or agreed to in writing, shall any Contributor be
157 | liable to You for damages, including any direct, indirect, special,
158 | incidental, or consequential damages of any character arising as a
159 | result of this License or out of the use or inability to use the
160 | Work (including but not limited to damages for loss of goodwill,
161 | work stoppage, computer failure or malfunction, or any and all
162 | other commercial damages or losses), even if such Contributor
163 | has been advised of the possibility of such damages.
164 |
165 | 9. Accepting Warranty or Additional Liability. While redistributing
166 | the Work or Derivative Works thereof, You may choose to offer,
167 | and charge a fee for, acceptance of support, warranty, indemnity,
168 | or other liability obligations and/or rights consistent with this
169 | License. However, in accepting such obligations, You may act only
170 | on Your own behalf and on Your sole responsibility, not on behalf
171 | of any other Contributor, and only if You agree to indemnify,
172 | defend, and hold each Contributor harmless for any liability
173 | incurred by, or claims asserted against, such Contributor by reason
174 | of your accepting any such warranty or additional liability.
175 |
176 | END OF TERMS AND CONDITIONS
177 |
178 | APPENDIX: How to apply the Apache License to your work.
179 |
180 | To apply the Apache License to your work, attach the following
181 | boilerplate notice, with the fields enclosed by brackets "{}"
182 | replaced with your own identifying information. (Don't include
183 | the brackets!) The text should be enclosed in the appropriate
184 | comment syntax for the file format. We also recommend that a
185 | file or class name and description of purpose be included on the
186 | same "printed page" as the copyright notice for easier
187 | identification within third-party archives.
188 |
189 | Copyright {yyyy} {name of copyright owner}
190 |
191 | Licensed under the Apache License, Version 2.0 (the "License");
192 | you may not use this file except in compliance with the License.
193 | You may obtain a copy of the License at
194 |
195 | http://www.apache.org/licenses/LICENSE-2.0
196 |
197 | Unless required by applicable law or agreed to in writing, software
198 | distributed under the License is distributed on an "AS IS" BASIS,
199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
200 | See the License for the specific language governing permissions and
201 | limitations under the License.
202 |
203 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | AESCrypt-Android
2 | ================
3 |
4 | [](http://android-arsenal.com/details/1/1686)
5 |
6 | Simple API to perform AES encryption on Android with no dependancies. This is the Android counterpart to the [AESCrypt](https://github.com/Gurpartap/aescrypt) library Ruby and [AESCrypt-ObjC](http://github.com/Gurpartap/AESCrypt-ObjC) created by [Gurpartap Singh](https://github.com/Gurpartap). It used the same *weak* :'( security defaults i.e Blank IV noted below.
7 |
8 | For compatiblity with AESCrypt, AESCrypt-Android has the same defaults namely:
9 |
10 | * 256-bit AES key
11 | * CBC mode
12 | * PKCS7Padding
13 | * Blank/Empty IV **(default*)**
14 |
15 | **\*Using CBC with the default blank IV [is vulnerable](http://security.stackexchange.com/a/35216/77065). This has been left in for compatibility with AESCrypt implementations. See Adv method for providing your own IV.** If you don't need to be compatable with [AESCrypt](https://github.com/Gurpartap/aescrypt) then look at [java-aes-crypto](https://github.com/tozny/java-aes-crypto) it's API is just as simple and generates more secure keys.
16 |
17 |
18 | ## Dependency
19 |
20 | [Download from Maven Central (.aar)](https://oss.sonatype.org/index.html#view-repositories;releases~browsestorage~/com/scottyab/aescrypt/0.0.1/aescrypt-0.0.1.aar)
21 |
22 | **or**
23 |
24 | ```java
25 | dependencies {
26 | compile 'com.scottyab:aescrypt:0.0.1'
27 | }
28 | ```
29 |
30 | # Usage
31 |
32 | ## Encrypt
33 |
34 | ```java
35 | String password = "password";
36 | String message = "hello world";
37 | try {
38 | String encryptedMsg = AESCrypt.encrypt(password, message);
39 | }catch (GeneralSecurityException e){
40 | //handle error
41 | }
42 | ```
43 |
44 | ## Decrypt
45 |
46 | ```java
47 | String password = "password";
48 | String encryptedMsg = "2B22cS3UC5s35WBihLBo8w==";
49 | try {
50 | String messageAfterDecrypt = AESCrypt.decrypt(password, encryptedMsg);
51 | }catch (GeneralSecurityException e){
52 | //handle error - could be due to incorrect password or tampered encryptedMsg
53 | }
54 | ```
55 |
56 | ## Recommended ~Advanced~ usage
57 |
58 | Please if you are going to use this library provide your own key, and use a different IV per message that you encrypt..
59 |
60 | `AESCrypt.encrypt(final SecretKeySpec key, final byte[] iv, final byte[] message)`
61 |
62 | `AESCrypt.decrypt(final SecretKeySpec key, final byte[] iv, final byte[] decodedCipherText)`
63 |
64 | **Note:** for flexibility these 'adv' methods don't provide BASE64 encoding/decoding.
65 |
66 |
67 | ## Debugging/Logging
68 |
69 | To enable logging simple change switch on the logging flag as shown below.
70 |
71 | `AESCrypt.DEBUG_LOG_ENABLED = true;`
72 |
73 | *Remember to disable in Live, recommend the below snippet if possible*
74 |
75 |
76 | ```java
77 | if (BuildConfig.DEBUG) {
78 | AESCrypt.DEBUG_LOG_ENABLED = true;
79 | }
80 | ```
81 |
82 |
83 |
84 | To be honest it's a strech to call this a library given it's only a single util class, but I created as went through a ton of pain working out the conpatible settings for AESCrypt. I hope this will save some one time in the future.
85 |
86 |
87 |
88 | # Contributing
89 |
90 | I welcome pull requests, issues and feedback.
91 |
92 | - Fork it
93 | - Create your feature branch (git checkout -b my-new-feature)
94 | - Commit your changes (git commit -am 'Added some feature')
95 | - Push to the branch (git push origin my-new-feature)
96 | - Create new Pull Request
97 |
98 |
99 | ## Licence
100 |
101 | Copyright (c) 2014 Scott Alexander-Bown
102 |
103 | Licensed under the Apache License, Version 2.0 (the "License");
104 | you may not use this file except in compliance with the License.
105 | You may obtain a copy of the License at
106 |
107 | http://www.apache.org/licenses/LICENSE-2.0
108 |
109 | Unless required by applicable law or agreed to in writing, software
110 | distributed under the License is distributed on an "AS IS" BASIS,
111 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
112 | See the License for the specific language governing permissions and
113 | limitations under the License.
114 |
--------------------------------------------------------------------------------
/aescrypt/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 |
--------------------------------------------------------------------------------
/aescrypt/build.gradle:
--------------------------------------------------------------------------------
1 | apply plugin: 'com.android.library'
2 |
3 | android {
4 | compileSdkVersion 21
5 | buildToolsVersion "21.1.2"
6 |
7 | defaultConfig {
8 | minSdkVersion 10
9 | targetSdkVersion 21
10 | versionCode versionCode
11 | versionName version
12 | }
13 | buildTypes {
14 | release {
15 | minifyEnabled false
16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
17 | }
18 | }
19 |
20 | }
21 |
22 | apply from: 'https://raw.github.com/chrisbanes/gradle-mvn-push/master/gradle-mvn-push.gradle'
23 |
--------------------------------------------------------------------------------
/aescrypt/gradle.properties:
--------------------------------------------------------------------------------
1 | # Module Gradle settings.
2 | POM_NAME=AESCrypt-Android
3 | POM_ARTIFACT_ID=aescrypt
4 | POM_PACKAGING=jar
--------------------------------------------------------------------------------
/aescrypt/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 /Users/scottab/dev/adt-bundle-mac-x86_64/sdk-macosx-v2/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 |
--------------------------------------------------------------------------------
/aescrypt/src/androidTest/java/com/scottyab/aescrypt/ApplicationTest.java:
--------------------------------------------------------------------------------
1 | package com.scottyab.aescrypt;
2 |
3 | import android.app.Application;
4 | import android.test.ApplicationTestCase;
5 |
6 | import java.security.GeneralSecurityException;
7 |
8 |
9 | /**
10 | * Testing Fundamentals
11 | */
12 | public class ApplicationTest extends ApplicationTestCase {
13 | public ApplicationTest() {
14 | super(Application.class);
15 | }
16 |
17 |
18 | public void testEncryptDecrypt(){
19 |
20 | String password = "password";
21 | String message = "hello world";
22 |
23 | if (BuildConfig.DEBUG) {
24 | AESCrypt.DEBUG_LOG_ENABLED = true;
25 | }
26 |
27 | String encryptedMsg = null;
28 | try {
29 | encryptedMsg = AESCrypt.encrypt(password, message);
30 | }catch (GeneralSecurityException e){
31 | fail("error occurred during encrypt");
32 | e.printStackTrace();
33 | }
34 |
35 | String messageAfterDecrypt = null;
36 | try {
37 | messageAfterDecrypt = AESCrypt.decrypt(password, encryptedMsg);
38 |
39 | }catch (GeneralSecurityException e){
40 | fail("error occurred during Decrypt");
41 | e.printStackTrace();
42 | }
43 |
44 | if (!messageAfterDecrypt.equals(message)){
45 | fail("messages don't match after encrypt and decrypt");
46 | }
47 | }
48 |
49 |
50 |
51 |
52 |
53 | public void testEncryt(){
54 |
55 | String password = "password";
56 | String message = "hello world";
57 |
58 | try {
59 | String encryptedMsg = AESCrypt.encrypt(password, message);
60 |
61 | }catch (GeneralSecurityException e){
62 | //handle error
63 |
64 | fail("error occurred during encrypt");
65 | e.printStackTrace();
66 | }
67 | }
68 |
69 |
70 | public void testDecrpyt(){
71 |
72 | String password = "password";
73 | String encryptedMsg = "2B22cS3UC5s35WBihLBo8w==";
74 |
75 | try {
76 |
77 | String messageAfterDecrypt = AESCrypt.decrypt(password, encryptedMsg);
78 |
79 | }catch (GeneralSecurityException e){
80 | fail("error occurred during Decrypt");
81 | e.printStackTrace();
82 | }
83 | }
84 |
85 |
86 | }
--------------------------------------------------------------------------------
/aescrypt/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
1 |
3 |
4 |
5 |
6 |
7 |
--------------------------------------------------------------------------------
/aescrypt/src/main/java/com/scottyab/aescrypt/AESCrypt.java:
--------------------------------------------------------------------------------
1 | package com.scottyab.aescrypt;
2 |
3 | import android.util.Base64;
4 | import android.util.Log;
5 |
6 | import java.io.UnsupportedEncodingException;
7 | import java.security.GeneralSecurityException;
8 | import java.security.MessageDigest;
9 | import java.security.NoSuchAlgorithmException;
10 |
11 | import javax.crypto.Cipher;
12 | import javax.crypto.spec.IvParameterSpec;
13 | import javax.crypto.spec.SecretKeySpec;
14 |
15 | /**
16 | * Encrypt and decrypt messages using AES 256 bit encryption that are compatible with AESCrypt-ObjC and AESCrypt Ruby.
17 | *
18 | * Created by scottab on 04/10/2014.
19 | */
20 | public final class AESCrypt {
21 |
22 | private static final String TAG = "AESCrypt";
23 |
24 | //AESCrypt-ObjC uses CBC and PKCS7Padding
25 | private static final String AES_MODE = "AES/CBC/PKCS7Padding";
26 | private static final String CHARSET = "UTF-8";
27 |
28 | //AESCrypt-ObjC uses SHA-256 (and so a 256-bit key)
29 | private static final String HASH_ALGORITHM = "SHA-256";
30 |
31 | //AESCrypt-ObjC uses blank IV (not the best security, but the aim here is compatibility)
32 | private static final byte[] ivBytes = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
33 |
34 | //togglable log option (please turn off in live!)
35 | public static boolean DEBUG_LOG_ENABLED = false;
36 |
37 |
38 | /**
39 | * Generates SHA256 hash of the password which is used as key
40 | *
41 | * @param password used to generated key
42 | * @return SHA256 of the password
43 | */
44 | private static SecretKeySpec generateKey(final String password) throws NoSuchAlgorithmException, UnsupportedEncodingException {
45 | final MessageDigest digest = MessageDigest.getInstance(HASH_ALGORITHM);
46 | byte[] bytes = password.getBytes("UTF-8");
47 | digest.update(bytes, 0, bytes.length);
48 | byte[] key = digest.digest();
49 |
50 | log("SHA-256 key ", key);
51 |
52 | SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
53 | return secretKeySpec;
54 | }
55 |
56 |
57 | /**
58 | * Encrypt and encode message using 256-bit AES with key generated from password.
59 | *
60 | *
61 | * @param password used to generated key
62 | * @param message the thing you want to encrypt assumed String UTF-8
63 | * @return Base64 encoded CipherText
64 | * @throws GeneralSecurityException if problems occur during encryption
65 | */
66 | public static String encrypt(final String password, String message)
67 | throws GeneralSecurityException {
68 |
69 | try {
70 | final SecretKeySpec key = generateKey(password);
71 |
72 | log("message", message);
73 |
74 | byte[] cipherText = encrypt(key, ivBytes, message.getBytes(CHARSET));
75 |
76 | //NO_WRAP is important as was getting \n at the end
77 | String encoded = Base64.encodeToString(cipherText, Base64.NO_WRAP);
78 | log("Base64.NO_WRAP", encoded);
79 | return encoded;
80 | } catch (UnsupportedEncodingException e) {
81 | if (DEBUG_LOG_ENABLED)
82 | Log.e(TAG, "UnsupportedEncodingException ", e);
83 | throw new GeneralSecurityException(e);
84 | }
85 | }
86 |
87 |
88 | /**
89 | * More flexible AES encrypt that doesn't encode
90 | * @param key AES key typically 128, 192 or 256 bit
91 | * @param iv Initiation Vector
92 | * @param message in bytes (assumed it's already been decoded)
93 | * @return Encrypted cipher text (not encoded)
94 | * @throws GeneralSecurityException if something goes wrong during encryption
95 | */
96 | public static byte[] encrypt(final SecretKeySpec key, final byte[] iv, final byte[] message)
97 | throws GeneralSecurityException {
98 | final Cipher cipher = Cipher.getInstance(AES_MODE);
99 | IvParameterSpec ivSpec = new IvParameterSpec(iv);
100 | cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);
101 | byte[] cipherText = cipher.doFinal(message);
102 |
103 | log("cipherText", cipherText);
104 |
105 | return cipherText;
106 | }
107 |
108 |
109 | /**
110 | * Decrypt and decode ciphertext using 256-bit AES with key generated from password
111 | *
112 | * @param password used to generated key
113 | * @param base64EncodedCipherText the encrpyted message encoded with base64
114 | * @return message in Plain text (String UTF-8)
115 | * @throws GeneralSecurityException if there's an issue decrypting
116 | */
117 | public static String decrypt(final String password, String base64EncodedCipherText)
118 | throws GeneralSecurityException {
119 |
120 | try {
121 | final SecretKeySpec key = generateKey(password);
122 |
123 | log("base64EncodedCipherText", base64EncodedCipherText);
124 | byte[] decodedCipherText = Base64.decode(base64EncodedCipherText, Base64.NO_WRAP);
125 | log("decodedCipherText", decodedCipherText);
126 |
127 | byte[] decryptedBytes = decrypt(key, ivBytes, decodedCipherText);
128 |
129 | log("decryptedBytes", decryptedBytes);
130 | String message = new String(decryptedBytes, CHARSET);
131 | log("message", message);
132 |
133 |
134 | return message;
135 | } catch (UnsupportedEncodingException e) {
136 | if (DEBUG_LOG_ENABLED)
137 | Log.e(TAG, "UnsupportedEncodingException ", e);
138 |
139 | throw new GeneralSecurityException(e);
140 | }
141 | }
142 |
143 |
144 | /**
145 | * More flexible AES decrypt that doesn't encode
146 | *
147 | * @param key AES key typically 128, 192 or 256 bit
148 | * @param iv Initiation Vector
149 | * @param decodedCipherText in bytes (assumed it's already been decoded)
150 | * @return Decrypted message cipher text (not encoded)
151 | * @throws GeneralSecurityException if something goes wrong during encryption
152 | */
153 | public static byte[] decrypt(final SecretKeySpec key, final byte[] iv, final byte[] decodedCipherText)
154 | throws GeneralSecurityException {
155 | final Cipher cipher = Cipher.getInstance(AES_MODE);
156 | IvParameterSpec ivSpec = new IvParameterSpec(iv);
157 | cipher.init(Cipher.DECRYPT_MODE, key, ivSpec);
158 | byte[] decryptedBytes = cipher.doFinal(decodedCipherText);
159 |
160 | log("decryptedBytes", decryptedBytes);
161 |
162 | return decryptedBytes;
163 | }
164 |
165 |
166 |
167 |
168 | private static void log(String what, byte[] bytes) {
169 | if (DEBUG_LOG_ENABLED)
170 | Log.d(TAG, what + "[" + bytes.length + "] [" + bytesToHex(bytes) + "]");
171 | }
172 |
173 | private static void log(String what, String value) {
174 | if (DEBUG_LOG_ENABLED)
175 | Log.d(TAG, what + "[" + value.length() + "] [" + value + "]");
176 | }
177 |
178 |
179 | /**
180 | * Converts byte array to hexidecimal useful for logging and fault finding
181 | * @param bytes
182 | * @return
183 | */
184 | private static String bytesToHex(byte[] bytes) {
185 | final char[] hexArray = {'0', '1', '2', '3', '4', '5', '6', '7', '8',
186 | '9', 'A', 'B', 'C', 'D', 'E', 'F'};
187 | char[] hexChars = new char[bytes.length * 2];
188 | int v;
189 | for (int j = 0; j < bytes.length; j++) {
190 | v = bytes[j] & 0xFF;
191 | hexChars[j * 2] = hexArray[v >>> 4];
192 | hexChars[j * 2 + 1] = hexArray[v & 0x0F];
193 | }
194 | return new String(hexChars);
195 | }
196 |
197 | private AESCrypt() {
198 | }
199 | }
200 |
--------------------------------------------------------------------------------
/build.gradle:
--------------------------------------------------------------------------------
1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
2 |
3 | buildscript {
4 | repositories {
5 | mavenCentral()
6 | }
7 | dependencies {
8 | classpath 'com.android.tools.build:gradle:1.1.0'
9 |
10 | // NOTE: Do not place your application dependencies here; they belong
11 | // in the individual module build.gradle files
12 | }
13 | }
14 |
15 | def isReleaseBuild() {
16 | return version.contains("SNAPSHOT") == false
17 | }
18 |
19 | allprojects {
20 | version = VERSION_NAME
21 | group = GROUP
22 |
23 | repositories {
24 | mavenCentral()
25 | }
26 | }
27 |
28 | apply plugin: 'android-reporting'
--------------------------------------------------------------------------------
/gradle.properties:
--------------------------------------------------------------------------------
1 | # Project-wide Gradle settings.
2 |
3 | # IDE (e.g. Android Studio) users:
4 | # Settings specified in this file will override any Gradle settings
5 | # configured through the IDE.
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 | #VERSION_NAME=0.0.1-SNAPSHOT
21 | VERSION_NAME=0.0.1
22 | VERSION_CODE=2
23 | GROUP=com.scottyab
24 |
25 |
26 | POM_DESCRIPTION=Simple API to perform AES encryption on Android. This is the Android counterpart to the AESCrypt library Ruby and Obj-C.
27 | POM_URL=https://github.com/scottyab/AESCrypt-Android.git
28 | POM_SCM_URL=https://github.com/scottyab/AESCrypt-Android.git
29 | POM_SCM_CONNECTION=scm:git@github.com:scottyab/AESCrypt-Android.git
30 | POM_SCM_DEV_CONNECTION=scm:git@github.com:scottyab/AESCrypt-Android.git
31 | POM_LICENCE_NAME=The Apache Software License, Version 2.0
32 | POM_LICENCE_URL=http://www.apache.org/licenses/LICENSE-2.0.txt
33 | POM_LICENCE_DIST=repo
34 | POM_DEVELOPER_ID=scottyab
35 | POM_DEVELOPER_NAME=Scott Alexander-Bown
36 |
37 | RELEASE_REPOSITORY_URL=https://oss.sonatype.org/service/local/staging/deploy/maven2
38 | SNAPSHOT_REPOSITORY_URL=https://oss.sonatype.org/content/repositories/snapshots
--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/scottyab/AESCrypt-Android/d7059712bfa10119b3a71d7b32bd91dbaeb34b83/gradle/wrapper/gradle-wrapper.jar
--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | #Thu Mar 05 08:54:35 GMT 2015
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-2.2.1-all.zip
7 |
--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
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 | # For Cygwin, ensure paths are in UNIX format before anything is touched.
46 | if $cygwin ; then
47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
48 | fi
49 |
50 | # Attempt to set APP_HOME
51 | # Resolve links: $0 may be a link
52 | PRG="$0"
53 | # Need this for relative symlinks.
54 | while [ -h "$PRG" ] ; do
55 | ls=`ls -ld "$PRG"`
56 | link=`expr "$ls" : '.*-> \(.*\)$'`
57 | if expr "$link" : '/.*' > /dev/null; then
58 | PRG="$link"
59 | else
60 | PRG=`dirname "$PRG"`"/$link"
61 | fi
62 | done
63 | SAVED="`pwd`"
64 | cd "`dirname \"$PRG\"`/" >&-
65 | APP_HOME="`pwd -P`"
66 | cd "$SAVED" >&-
67 |
68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
69 |
70 | # Determine the Java command to use to start the JVM.
71 | if [ -n "$JAVA_HOME" ] ; then
72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
73 | # IBM's JDK on AIX uses strange locations for the executables
74 | JAVACMD="$JAVA_HOME/jre/sh/java"
75 | else
76 | JAVACMD="$JAVA_HOME/bin/java"
77 | fi
78 | if [ ! -x "$JAVACMD" ] ; then
79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
80 |
81 | Please set the JAVA_HOME variable in your environment to match the
82 | location of your Java installation."
83 | fi
84 | else
85 | JAVACMD="java"
86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
87 |
88 | Please set the JAVA_HOME variable in your environment to match the
89 | location of your Java installation."
90 | fi
91 |
92 | # Increase the maximum file descriptors if we can.
93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
94 | MAX_FD_LIMIT=`ulimit -H -n`
95 | if [ $? -eq 0 ] ; then
96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
97 | MAX_FD="$MAX_FD_LIMIT"
98 | fi
99 | ulimit -n $MAX_FD
100 | if [ $? -ne 0 ] ; then
101 | warn "Could not set maximum file descriptor limit: $MAX_FD"
102 | fi
103 | else
104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
105 | fi
106 | fi
107 |
108 | # For Darwin, add options to specify how the application appears in the dock
109 | if $darwin; then
110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
111 | fi
112 |
113 | # For Cygwin, switch paths to Windows format before running java
114 | if $cygwin ; then
115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
117 |
118 | # We build the pattern for arguments to be converted via cygpath
119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 | SEP=""
121 | for dir in $ROOTDIRSRAW ; do
122 | ROOTDIRS="$ROOTDIRS$SEP$dir"
123 | SEP="|"
124 | done
125 | OURCYGPATTERN="(^($ROOTDIRS))"
126 | # Add a user-defined pattern to the cygpath arguments
127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 | fi
130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 | i=0
132 | for arg in "$@" ; do
133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
135 |
136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 | else
139 | eval `echo args$i`="\"$arg\""
140 | fi
141 | i=$((i+1))
142 | done
143 | case $i in
144 | (0) set -- ;;
145 | (1) set -- "$args0" ;;
146 | (2) set -- "$args0" "$args1" ;;
147 | (3) set -- "$args0" "$args1" "$args2" ;;
148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 | esac
155 | fi
156 |
157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
158 | function splitJvmOpts() {
159 | JVM_OPTS=("$@")
160 | }
161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
163 |
164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
165 |
--------------------------------------------------------------------------------
/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 |
--------------------------------------------------------------------------------
/settings.gradle:
--------------------------------------------------------------------------------
1 | include ':aescrypt'
2 |
--------------------------------------------------------------------------------