mirror of
https://github.com/krzyzanowskim/CryptoSwift.git
synced 2026-05-07 20:12:26 +00:00
Marcin Krzyzanowski
a423c18b24
- Verify AEADXChaCha20Poly1305.ivRange includes 24 but not 12. - Ensure XChaCha20 accepts a 24-byte IV and rejects a 12-byte IV. - Register the test in allTests.
90 lines
3.4 KiB
Swift
90 lines
3.4 KiB
Swift
//
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// CryptoSwift
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//
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// Copyright (C) Marcin Krzyżanowski <marcin@krzyzanowskim.com>
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// This software is provided 'as-is', without any express or implied warranty.
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//
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
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//
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// - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required.
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// - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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// - This notice may not be removed or altered from any source or binary distribution.
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//
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import XCTest
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@testable import CryptoSwift
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class XChaCha20Poly1305Tests: XCTestCase {
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func testNonceLengthMetadataMatchesXChaCha20() {
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XCTAssertTrue(AEADXChaCha20Poly1305.ivRange.contains(24))
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XCTAssertFalse(AEADXChaCha20Poly1305.ivRange.contains(12))
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let key = Array<UInt8>(repeating: 0, count: AEADXChaCha20Poly1305.kLen)
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XCTAssertNoThrow(try XChaCha20(key: key, iv: Array<UInt8>(repeating: 0, count: 24)))
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XCTAssertThrowsError(try XChaCha20(key: key, iv: Array<UInt8>(repeating: 0, count: 12)))
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}
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/// See: https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-xchacha#appendix-A.3.1
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func testRoundTrip() {
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do {
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let plaintext: Array<UInt8> = .init(
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hex: """
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4c616469657320616e642047656e746c656d656e206f662074686520636c6173
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73206f66202739393a204966204920636f756c64206f6666657220796f75206f
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6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73
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637265656e20776f756c642062652069742e
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""".replacingOccurrences(of: "\n", with: "")
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)
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let aad: Array<UInt8> = .init(
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hex: "50515253c0c1c2c3c4c5c6c7")
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let key: Array<UInt8> = .init(
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hex: "808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f")
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let iv: Array<UInt8> = .init(
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hex: "404142434445464748494a4b4c4d4e4f5051525354555657")
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let encryptResult = try AEADXChaCha20Poly1305.encrypt(
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plaintext,
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key: key,
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iv: iv,
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authenticationHeader: aad
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)
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XCTAssertEqual(
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encryptResult.cipherText.toHexString(),
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"""
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bd6d179d3e83d43b9576579493c0e939572a1700252bfaccbed2902c21396cbb
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731c7f1b0b4aa6440bf3a82f4eda7e39ae64c6708c54c216cb96b72e1213b452
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2f8c9ba40db5d945b11b69b982c1bb9e3f3fac2bc369488f76b2383565d3fff9
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21f9664c97637da9768812f615c68b13b52e
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""".replacingOccurrences(of: "\n", with: "")
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)
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XCTAssertEqual(
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encryptResult.authenticationTag.toHexString(),
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"c0875924c1c7987947deafd8780acf49"
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)
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let decryptResult = try AEADXChaCha20Poly1305.decrypt(
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encryptResult.cipherText,
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key: key,
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iv: iv,
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authenticationHeader: aad,
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authenticationTag: encryptResult.authenticationTag
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)
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XCTAssertEqual(decryptResult.plainText, plaintext)
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} catch {
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XCTFail(error.localizedDescription)
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}
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}
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static let allTests = [
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("XChaCha20-Poly1305 nonce length metadata matches XChaCha20", testNonceLengthMetadataMatchesXChaCha20),
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("Test Vector for AEAD_XCHACHA20_POLY1305", testRoundTrip)
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]
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}
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