├── .github
├── FUNDING.yml
├── ISSUE_TEMPLATE
│ ├── bug_report.md
│ └── feature_request.md
└── PULL_REQUEST_TEMPLATE.md
├── .gitignore
├── CODE_OF_CONDUCT.md
├── CONTRIBUTING.md
├── LICENSE
├── Package.swift
├── README.md
└── Sources
└── OTP
├── Extensions
├── ArrayExtension.swift
├── DataExtension.swift
└── UInt64Extension.swift
├── OTP.swift
└── OTPAlgorithm.swift
/.github/FUNDING.yml:
--------------------------------------------------------------------------------
1 | github: [sparrowcode]
2 |
--------------------------------------------------------------------------------
/.github/ISSUE_TEMPLATE/bug_report.md:
--------------------------------------------------------------------------------
1 | ---
2 | name: Bug report
3 | about: Create a report to help us improve
4 | title: ''
5 | labels: bug
6 | assignees: ivanvorobei, svyatoynick
7 | ---
8 |
--------------------------------------------------------------------------------
/.github/ISSUE_TEMPLATE/feature_request.md:
--------------------------------------------------------------------------------
1 | ---
2 | name: Feature request
3 | about: Suggest an idea for this project
4 | title: ''
5 | labels: enhancement
6 | assignees: ivanvorobei, svyatoynick
7 | ---
8 |
--------------------------------------------------------------------------------
/.github/PULL_REQUEST_TEMPLATE.md:
--------------------------------------------------------------------------------
1 | ## Goal
2 |
3 |
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | # macOS Files
2 | .DS_Store
3 | .Trashes
4 |
5 | # Swift Package Manager
6 | .swiftpm
7 |
--------------------------------------------------------------------------------
/CODE_OF_CONDUCT.md:
--------------------------------------------------------------------------------
1 | # Contributor Covenant Code of Conduct
2 |
3 | ## Our Pledge
4 |
5 | We as members, contributors, and leaders pledge to make participation in our
6 | community a harassment-free experience for everyone, regardless of age, body
7 | size, visible or invisible disability, ethnicity, sex characteristics, gender
8 | identity and expression, level of experience, education, socio-economic status,
9 | nationality, personal appearance, race, religion, or sexual identity
10 | and orientation.
11 |
12 | We pledge to act and interact in ways that contribute to an open, welcoming,
13 | diverse, inclusive, and healthy community.
14 |
15 | ## Our Standards
16 |
17 | Examples of behavior that contributes to a positive environment for our
18 | community include:
19 |
20 | * Demonstrating empathy and kindness toward other people
21 | * Being respectful of differing opinions, viewpoints, and experiences
22 | * Giving and gracefully accepting constructive feedback
23 | * Accepting responsibility and apologizing to those affected by our mistakes,
24 | and learning from the experience
25 | * Focusing on what is best not just for us as individuals, but for the
26 | overall community
27 |
28 | Examples of unacceptable behavior include:
29 |
30 | * The use of sexualized language or imagery, and sexual attention or
31 | advances of any kind
32 | * Trolling, insulting or derogatory comments, and personal or political attacks
33 | * Public or private harassment
34 | * Publishing others' private information, such as a physical or email
35 | address, without their explicit permission
36 | * Other conduct which could reasonably be considered inappropriate in a
37 | professional setting
38 |
39 | ## Enforcement Responsibilities
40 |
41 | Community leaders are responsible for clarifying and enforcing our standards of
42 | acceptable behavior and will take appropriate and fair corrective action in
43 | response to any behavior that they deem inappropriate, threatening, offensive,
44 | or harmful.
45 |
46 | Community leaders have the right and responsibility to remove, edit, or reject
47 | comments, commits, code, wiki edits, issues, and other contributions that are
48 | not aligned to this Code of Conduct, and will communicate reasons for moderation
49 | decisions when appropriate.
50 |
51 | ## Scope
52 |
53 | This Code of Conduct applies within all community spaces, and also applies when
54 | an individual is officially representing the community in public spaces.
55 | Examples of representing our community include using an official e-mail address,
56 | posting via an official social media account, or acting as an appointed
57 | representative at an online or offline event.
58 |
59 | ## Enforcement
60 |
61 | Instances of abusive, harassing, or otherwise unacceptable behavior may be
62 | reported to the community leaders responsible for enforcement at
63 | hello@ivanvorobei.io.
64 | All complaints will be reviewed and investigated promptly and fairly.
65 |
66 | All community leaders are obligated to respect the privacy and security of the
67 | reporter of any incident.
68 |
69 | ## Enforcement Guidelines
70 |
71 | Community leaders will follow these Community Impact Guidelines in determining
72 | the consequences for any action they deem in violation of this Code of Conduct:
73 |
74 | ### 1. Correction
75 |
76 | **Community Impact**: Use of inappropriate language or other behavior deemed
77 | unprofessional or unwelcome in the community.
78 |
79 | **Consequence**: A private, written warning from community leaders, providing
80 | clarity around the nature of the violation and an explanation of why the
81 | behavior was inappropriate. A public apology may be requested.
82 |
83 | ### 2. Warning
84 |
85 | **Community Impact**: A violation through a single incident or series
86 | of actions.
87 |
88 | **Consequence**: A warning with consequences for continued behavior. No
89 | interaction with the people involved, including unsolicited interaction with
90 | those enforcing the Code of Conduct, for a specified period of time. This
91 | includes avoiding interactions in community spaces as well as external channels
92 | like social media. Violating these terms may lead to a temporary or
93 | permanent ban.
94 |
95 | ### 3. Temporary Ban
96 |
97 | **Community Impact**: A serious violation of community standards, including
98 | sustained inappropriate behavior.
99 |
100 | **Consequence**: A temporary ban from any sort of interaction or public
101 | communication with the community for a specified period of time. No public or
102 | private interaction with the people involved, including unsolicited interaction
103 | with those enforcing the Code of Conduct, is allowed during this period.
104 | Violating these terms may lead to a permanent ban.
105 |
106 | ### 4. Permanent Ban
107 |
108 | **Community Impact**: Demonstrating a pattern of violation of community
109 | standards, including sustained inappropriate behavior, harassment of an
110 | individual, or aggression toward or disparagement of classes of individuals.
111 |
112 | **Consequence**: A permanent ban from any sort of public interaction within
113 | the community.
114 |
115 | ## Attribution
116 |
117 | This Code of Conduct is adapted from the [Contributor Covenant][homepage],
118 | version 2.0, available at
119 | https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
120 |
121 | Community Impact Guidelines were inspired by [Mozilla's code of conduct
122 | enforcement ladder](https://github.com/mozilla/diversity).
123 |
124 | [homepage]: https://www.contributor-covenant.org
125 |
126 | For answers to common questions about this code of conduct, see the FAQ at
127 | https://www.contributor-covenant.org/faq. Translations are available at
128 | https://www.contributor-covenant.org/translations.
129 |
--------------------------------------------------------------------------------
/CONTRIBUTING.md:
--------------------------------------------------------------------------------
1 | # Contributing
2 |
3 | Here provided info about contribution process and recommendations.
4 |
5 | ## Codestyle
6 |
7 | ### Marks
8 |
9 | For clean struct code good is using marks.
10 |
11 | ```swift
12 | class Example {
13 |
14 | // MARK: - Init
15 |
16 | init() {}
17 | }
18 | ```
19 |
20 | Here you find all which using in project:
21 |
22 | - // MARK: - Init
23 | - // MARK: - Lifecycle
24 | - // MARK: - Layout
25 | - // MARK: - Public
26 | - // MARK: - Private
27 | - // MARK: - Internal
28 | - // MARK: - Models
29 | - // MARK: - Ovveride
30 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | MIT License
2 |
3 | Copyright (c) 2022 Sparrow Code
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
--------------------------------------------------------------------------------
/Package.swift:
--------------------------------------------------------------------------------
1 | // swift-tools-version:5.3
2 |
3 | import PackageDescription
4 |
5 | let package = Package(
6 | name: "OTP",
7 | platforms: [
8 | .iOS(.v13),
9 | .tvOS(.v13),
10 | .watchOS(.v6)
11 | ],
12 | products: [
13 | .library(
14 | name: "OTP",
15 | targets: ["OTP"]
16 | )
17 | ],
18 | dependencies: [],
19 | targets: [
20 | .target(
21 | name: "OTP",
22 | swiftSettings: [
23 | .define("OTP_SPM")
24 | ]
25 | )
26 | ],
27 | swiftLanguageVersions: [.v5]
28 | )
29 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # One Time Password
2 |
3 |
4 |
5 | 
6 |
7 |
8 | 
9 |
10 |
11 |
12 | ## Navigate
13 |
14 | - [Installation](#installation)
15 | - [Swift Package Manager](#swift-package-manager)
16 | - [CocoaPods](#cocoapods)
17 | - [Manually](#manually)
18 | - [Usage](#usage)
19 | - [Apps Using](#apps-using)
20 |
21 | ## Installation
22 |
23 | Ready to use on iOS 13+, tvOS 13+ & watchOS 6+
24 |
25 | ### Swift Package Manager
26 |
27 | In Xcode go to `File` -> `Packages` -> `Update to Latest Package Versions` and insert url:
28 |
29 | ```
30 | https://github.com/sparrowcode/OTP
31 | ```
32 |
33 | or adding it to the `dependencies` value of your `Package.swift`:
34 |
35 | ```swift
36 | dependencies: [
37 | .package(url: "https://github.com/sparrowcode/OTP", .upToNextMajor(from: "1.0.0"))
38 | ]
39 | ```
40 |
41 | ### CocoaPods:
42 |
43 | Specify it in your `Podfile`:
44 |
45 | ```ruby
46 | pod 'OTP'
47 | ```
48 |
49 | ### Manually
50 |
51 | If you prefer not to use any of dependency managers, you can integrate manually. Put `Sources/OTP` folder in your Xcode project. Make sure to enable `Copy items if needed` and `Create groups`.
52 |
53 | ## Usage
54 |
55 | ```swift
56 | // With default parametrs
57 | let password = OTP.generateOTP(secret: "secret")
58 |
59 | // With custom values
60 | let password = OTP.generateOTP(secret: "secret", algorithm: OTPAlgorithm = .sha1, expirationTimeInSeconds: Int = 30, digits: Int = 6)
61 | ```
62 |
63 | ## Apps Using
64 |
65 |
66 | 
67 |
68 |
69 | If you use a `OTP`, add your application via Pull Request.
70 |
--------------------------------------------------------------------------------
/Sources/OTP/Extensions/ArrayExtension.swift:
--------------------------------------------------------------------------------
1 | // The MIT License (MIT)
2 | // Copyright © 2022 Sparrow Code LTD (https://sparrowcode.io, hello@sparrowcode.io)
3 | //
4 | // Permission is hereby granted, free of charge, to any person obtaining a copy
5 | // of this software and associated documentation files (the "Software"), to deal
6 | // in the Software without restriction, including without limitation the rights
7 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | // copies of the Software, and to permit persons to whom the Software is
9 | // furnished to do so, subject to the following conditions:
10 | //
11 | // The above copyright notice and this permission notice shall be included in all
12 | // copies or substantial portions of the Software.
13 | //
14 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 | // SOFTWARE.
21 |
22 | import Foundation
23 |
24 | extension Array where Element == UInt8 {
25 |
26 | init(reserveCapacity: Int) {
27 | self = Array()
28 | self.reserveCapacity(reserveCapacity)
29 | }
30 |
31 | public init(hex: String) {
32 | self.init(reserveCapacity: hex.unicodeScalars.lazy.underestimatedCount)
33 | var buffer: UInt8?
34 | var skip = hex.hasPrefix("0x") ? 2 : 0
35 | for char in hex.unicodeScalars.lazy {
36 | guard skip == 0 else {
37 | skip -= 1
38 | continue
39 | }
40 |
41 | guard char.value >= 48 && char.value <= 102 else {
42 | removeAll()
43 | return
44 | }
45 | let v: UInt8
46 | let c: UInt8 = UInt8(char.value)
47 |
48 | switch c {
49 | case let c where c <= 57:
50 | v = c - 48
51 | case let c where c >= 65 && c <= 70:
52 | v = c - 55
53 | case let c where c >= 97:
54 | v = c - 87
55 | default:
56 | removeAll()
57 | return
58 | }
59 |
60 | if let b = buffer {
61 | append(b << 4 | v)
62 | buffer = nil
63 | } else {
64 | buffer = v
65 | }
66 | }
67 |
68 | if let b = buffer {
69 | append(b)
70 | }
71 | }
72 |
73 | public func toHexString() -> String {
74 | `lazy`.reduce(into: "") {
75 | var s = String($1, radix: 16)
76 | if s.count == 1 {
77 | s = "0" + s
78 | }
79 | $0 += s
80 | }
81 | }
82 | }
83 |
--------------------------------------------------------------------------------
/Sources/OTP/Extensions/DataExtension.swift:
--------------------------------------------------------------------------------
1 | // The MIT License (MIT)
2 | // Copyright © 2022 Sparrow Code LTD (https://sparrowcode.io, hello@sparrowcode.io)
3 | //
4 | // Permission is hereby granted, free of charge, to any person obtaining a copy
5 | // of this software and associated documentation files (the "Software"), to deal
6 | // in the Software without restriction, including without limitation the rights
7 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | // copies of the Software, and to permit persons to whom the Software is
9 | // furnished to do so, subject to the following conditions:
10 | //
11 | // The above copyright notice and this permission notice shall be included in all
12 | // copies or substantial portions of the Software.
13 | //
14 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 | // SOFTWARE.
21 |
22 | import Foundation
23 |
24 | extension Data {
25 |
26 | public init(hex: String) {
27 | self.init(Array(hex: hex))
28 | }
29 |
30 | public var bytes: Array {
31 | return Array(self)
32 | }
33 | }
34 |
--------------------------------------------------------------------------------
/Sources/OTP/Extensions/UInt64Extension.swift:
--------------------------------------------------------------------------------
1 | // The MIT License (MIT)
2 | // Copyright © 2022 Sparrow Code LTD (https://sparrowcode.io, hello@sparrowcode.io)
3 | //
4 | // Permission is hereby granted, free of charge, to any person obtaining a copy
5 | // of this software and associated documentation files (the "Software"), to deal
6 | // in the Software without restriction, including without limitation the rights
7 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | // copies of the Software, and to permit persons to whom the Software is
9 | // furnished to do so, subject to the following conditions:
10 | //
11 | // The above copyright notice and this permission notice shall be included in all
12 | // copies or substantial portions of the Software.
13 | //
14 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 | // SOFTWARE.
21 |
22 | import Foundation
23 |
24 | extension UInt64 {
25 |
26 | var data: Data {
27 | var int = self
28 | let intData = Data(bytes: &int, count: MemoryLayout.size(ofValue: self))
29 | return intData
30 | }
31 | }
32 |
--------------------------------------------------------------------------------
/Sources/OTP/OTP.swift:
--------------------------------------------------------------------------------
1 | // The MIT License (MIT)
2 | // Copyright © 2022 Sparrow Code LTD (https://sparrowcode.io, hello@sparrowcode.io)
3 | //
4 | // Permission is hereby granted, free of charge, to any person obtaining a copy
5 | // of this software and associated documentation files (the "Software"), to deal
6 | // in the Software without restriction, including without limitation the rights
7 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | // copies of the Software, and to permit persons to whom the Software is
9 | // furnished to do so, subject to the following conditions:
10 | //
11 | // The above copyright notice and this permission notice shall be included in all
12 | // copies or substantial portions of the Software.
13 | //
14 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 | // SOFTWARE.
21 |
22 | import Foundation
23 | import CryptoKit
24 |
25 | public enum OTP {
26 |
27 | public static func generateOTP(secret: Data, algorithm: OTPAlgorithm = .sha1, expirationTimeInSeconds: Int = 30, digits: Int = 6) -> String? {
28 |
29 | let secondsPast1970 = Int(floor(Date().timeIntervalSince1970))
30 |
31 | let counter = UInt64(floor(Double(secondsPast1970) / Double(expirationTimeInSeconds)))
32 |
33 | // HMAC message data from counter as big endian
34 | let counterMessage = counter.bigEndian.data
35 |
36 | // HMAC hash counter data with secret key
37 | var hmac = Data()
38 |
39 | switch algorithm {
40 | case .sha1:
41 | hmac = Data(HMAC.authenticationCode(for: counterMessage, using: SymmetricKey(data: secret)))
42 | case .sha256:
43 | hmac = Data(HMAC.authenticationCode(for: counterMessage, using: SymmetricKey(data: secret)))
44 | case .sha512:
45 | hmac = Data(HMAC.authenticationCode(for: counterMessage, using: SymmetricKey(data: secret)))
46 | }
47 |
48 |
49 | // Get last 4 bits of hash as offset
50 | let offset = Int((hmac.last ?? 0x00) & 0x0f)
51 |
52 | // Get 4 bytes from the hash from [offset] to [offset + 3]
53 | let truncatedHMAC = Array(hmac[offset...offset + 3])
54 |
55 | // Convert byte array of the truncated hash to data
56 | let data = Data(truncatedHMAC)
57 |
58 | // Convert data to UInt32
59 | var number = UInt32(strtoul(data.bytes.toHexString(), nil, 16))
60 |
61 | // Mask most significant bit
62 | number &= 0x7fffffff
63 |
64 | // Modulo number by 10^(digits)
65 | number = number % UInt32(pow(10, Float(digits)))
66 |
67 | // Convert int to string
68 | let strNum = String(number)
69 |
70 | // Return string if adding leading zeros is not required
71 | if strNum.count == digits {
72 | return strNum
73 | }
74 |
75 | // Add zeros to start of string if not present and return
76 | let prefixedZeros = String(repeatElement("0", count: (digits - strNum.count)))
77 | return (prefixedZeros + strNum)
78 | }
79 | }
80 |
--------------------------------------------------------------------------------
/Sources/OTP/OTPAlgorithm.swift:
--------------------------------------------------------------------------------
1 | // The MIT License (MIT)
2 | // Copyright © 2022 Sparrow Code LTD (https://sparrowcode.io, hello@sparrowcode.io)
3 | //
4 | // Permission is hereby granted, free of charge, to any person obtaining a copy
5 | // of this software and associated documentation files (the "Software"), to deal
6 | // in the Software without restriction, including without limitation the rights
7 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | // copies of the Software, and to permit persons to whom the Software is
9 | // furnished to do so, subject to the following conditions:
10 | //
11 | // The above copyright notice and this permission notice shall be included in all
12 | // copies or substantial portions of the Software.
13 | //
14 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 | // SOFTWARE.
21 |
22 | import Foundation
23 |
24 | /**
25 | OTP: Hash algorithm to use for one time password generation
26 | */
27 | public enum OTPAlgorithm: Codable {
28 |
29 | case sha1
30 | case sha256
31 | case sha512
32 | }
33 |
--------------------------------------------------------------------------------