diff --git a/Libraries/LibCrypto/CMakeLists.txt b/Libraries/LibCrypto/CMakeLists.txt index c34c52c98be..719a3afeedb 100644 --- a/Libraries/LibCrypto/CMakeLists.txt +++ b/Libraries/LibCrypto/CMakeLists.txt @@ -22,7 +22,6 @@ set(SOURCES Checksum/CRC32.cpp Cipher/AES.cpp Cipher/Cipher.cpp - Cipher/ChaCha20.cpp Curves/Curve25519.cpp Curves/Ed25519.cpp Curves/Ed448.cpp diff --git a/Libraries/LibCrypto/Cipher/ChaCha20.cpp b/Libraries/LibCrypto/Cipher/ChaCha20.cpp deleted file mode 100644 index d7433ab300e..00000000000 --- a/Libraries/LibCrypto/Cipher/ChaCha20.cpp +++ /dev/null @@ -1,160 +0,0 @@ -/* - * Copyright (c) 2022, stelar7 - * - * SPDX-License-Identifier: BSD-2-Clause - */ - -#include -#include -#include - -namespace Crypto::Cipher { - -ChaCha20::ChaCha20(ReadonlyBytes key, ReadonlyBytes nonce, u32 initial_counter) -{ - VERIFY(key.size() == 16 || key.size() == 32); - VERIFY(nonce.size() == 8 || nonce.size() == 12); - - // The first four words (0-3) are constants - if (key.size() == 32) { - m_state[0] = CONSTANT_32_BYTES[0]; - m_state[1] = CONSTANT_32_BYTES[1]; - m_state[2] = CONSTANT_32_BYTES[2]; - m_state[3] = CONSTANT_32_BYTES[3]; - } else { - m_state[0] = CONSTANT_16_BYTES[0]; - m_state[1] = CONSTANT_16_BYTES[1]; - m_state[2] = CONSTANT_16_BYTES[2]; - m_state[3] = CONSTANT_16_BYTES[3]; - } - - // The next eight words (4-11) are taken from the key by reading the bytes in little-endian order, in 4-byte chunks. - for (u32 i = 0; i < 16; i += 4) { - m_state[(i / 4) + 4] = AK::convert_between_host_and_little_endian(ByteReader::load32(key.offset(i))); - } - - // NOTE: For the 128-bit keys we read the same bytes twice to fill the state - u32 key_offset = key.size() == 32 ? 16 : 0; - for (u32 i = 0; i < 16; i += 4) { - m_state[(i / 4) + 8] = AK::convert_between_host_and_little_endian(ByteReader::load32(key.offset(key_offset + i))); - } - - // Word 12 is a block counter. Since each block is 64-bytes, a 32-bit word is enough for 256 gigabytes of data. - m_state[12] = initial_counter; - - // Words 13-15 are a nonce, which should not be repeated for the same key. - // The 13th word is the first 32 bits of the input nonce taken as a little-endian integer, - // while the 15th word is the last 32 bits. - - // NOTE: In the case of an 8-byte nonce, we skip the 13th word - u32 nonce_offset = nonce.size() == 8 ? 1 : 0; - for (u32 i = 0; i < 12; i += 4) { - m_state[(i / 4) + 13 + nonce_offset] = AK::convert_between_host_and_little_endian(ByteReader::load32(nonce.offset(i))); - } -} - -// https://datatracker.ietf.org/doc/html/rfc7539#section-2.3 -void ChaCha20::generate_block() -{ - // Copy the current state into the block - memcpy(m_block, m_state, 16 * sizeof(u32)); - - // ChaCha20 runs 20 rounds, alternating between "column rounds" and "diagonal rounds". - // Each round consists of four quarter-rounds - for (u32 i = 0; i < 20; i += 2) { - // Column rounds - do_quarter_round(m_block[0], m_block[4], m_block[8], m_block[12]); - do_quarter_round(m_block[1], m_block[5], m_block[9], m_block[13]); - do_quarter_round(m_block[2], m_block[6], m_block[10], m_block[14]); - do_quarter_round(m_block[3], m_block[7], m_block[11], m_block[15]); - - // Diagonal rounds - do_quarter_round(m_block[0], m_block[5], m_block[10], m_block[15]); - do_quarter_round(m_block[1], m_block[6], m_block[11], m_block[12]); - do_quarter_round(m_block[2], m_block[7], m_block[8], m_block[13]); - do_quarter_round(m_block[3], m_block[4], m_block[9], m_block[14]); - } - - // At the end of 20 rounds, we add the original input words to the output words, - for (u32 i = 0; i < 16; i++) { - m_block[i] += m_state[i]; - } - - // and serialize the result by sequencing the words one-by-one in little-endian order. - for (u32 i = 0; i < 16; i++) { - m_block[i] = AK::convert_between_host_and_little_endian(m_block[i]); - } -} - -ALWAYS_INLINE static void rotl(u32& x, u32 n) -{ - x = (x << n) | (x >> (32 - n)); -} - -// https://datatracker.ietf.org/doc/html/rfc8439#section-2.1 -void ChaCha20::do_quarter_round(u32& a, u32& b, u32& c, u32& d) -{ - a += b; - d ^= a; - rotl(d, 16); - - c += d; - b ^= c; - rotl(b, 12); - - a += b; - d ^= a; - rotl(d, 8); - - c += d; - b ^= c; - rotl(b, 7); -} - -void ChaCha20::run_cipher(ReadonlyBytes input, Bytes& output) -{ - size_t offset = 0; - size_t block_offset = 0; - while (offset < input.size()) { - if (block_offset == 0 || block_offset >= 64) { - // Generate a new XOR block - generate_block(); - - // Increment the block counter, and carry over to block 13 - m_state[12]++; - if (m_state[12] == 0) { - m_state[13]++; - } - - block_offset = 0; - } - - // XOR the input and the current block - u32 n = min(input.size() - offset, 64 - block_offset); - u8* key_block = (u8*)m_block + block_offset; - for (u32 i = 0; i < n; i++) { - u8 input_byte = input.offset_pointer(offset)[i]; - u8 key_byte = key_block[i]; - u8 output_byte = input_byte ^ key_byte; - - ByteReader::store(output.offset_pointer(offset + i), output_byte); - } - - offset += n; - block_offset += n; - } -} - -void ChaCha20::encrypt(ReadonlyBytes input, Bytes& output) -{ - VERIFY(input.size() <= output.size()); - this->run_cipher(input, output); -} - -void ChaCha20::decrypt(ReadonlyBytes input, Bytes& output) -{ - VERIFY(input.size() <= output.size()); - this->run_cipher(input, output); -} - -} diff --git a/Libraries/LibCrypto/Cipher/ChaCha20.h b/Libraries/LibCrypto/Cipher/ChaCha20.h deleted file mode 100644 index 71ddb2c79f9..00000000000 --- a/Libraries/LibCrypto/Cipher/ChaCha20.h +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (c) 2022, stelar7 - * - * SPDX-License-Identifier: BSD-2-Clause - */ - -#pragma once - -#include - -namespace Crypto::Cipher { - -class ChaCha20 { - static constexpr u32 CONSTANT_16_BYTES[] { 0x61707865, 0x3120646E, 0x79622D36, 0x6B206574 }; - static constexpr u32 CONSTANT_32_BYTES[] { 0x61707865, 0x3320646E, 0x79622D32, 0x6B206574 }; - -public: - ChaCha20(ReadonlyBytes key, ReadonlyBytes nonce, u32 initial_counter = 0); - - void encrypt(ReadonlyBytes input, Bytes& output); - void decrypt(ReadonlyBytes input, Bytes& output); - void generate_block(); - ReadonlyBytes block() const { return { m_block, 64 }; } - -private: - void run_cipher(ReadonlyBytes input, Bytes& output); - ALWAYS_INLINE void do_quarter_round(u32& a, u32& b, u32& c, u32& d); - - u32 m_state[16] {}; - u32 m_block[16] {}; -}; -} diff --git a/Tests/LibCrypto/CMakeLists.txt b/Tests/LibCrypto/CMakeLists.txt index 670e7af11c6..946bf2c4989 100644 --- a/Tests/LibCrypto/CMakeLists.txt +++ b/Tests/LibCrypto/CMakeLists.txt @@ -3,7 +3,6 @@ set(TEST_SOURCES TestASN1.cpp TestBigFraction.cpp TestBigInteger.cpp - TestChaCha20.cpp TestChecksum.cpp TestCurves.cpp TestEd25519.cpp diff --git a/Tests/LibCrypto/TestChaCha20.cpp b/Tests/LibCrypto/TestChaCha20.cpp deleted file mode 100644 index 618bfc30bfa..00000000000 --- a/Tests/LibCrypto/TestChaCha20.cpp +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Copyright (c) 2022, stelar7 - * - * SPDX-License-Identifier: BSD-2-Clause - */ - -#include -#include -#include - -// https://datatracker.ietf.org/doc/html/rfc7539#appendix-A.2 -TEST_CASE(test_vector_1) -{ - u8 key[32] = {}; - u8 nonce[12] = {}; - u32 initial_block_counter = {}; - u8 plaintext[64] = {}; - u8 ciphertext[64] { - 0x76, 0xb8, 0xe0, 0xad, 0xa0, 0xf1, 0x3d, 0x90, 0x40, 0x5d, 0x6a, 0xe5, 0x53, 0x86, 0xbd, 0x28, - 0xbd, 0xd2, 0x19, 0xb8, 0xa0, 0x8d, 0xed, 0x1a, 0xa8, 0x36, 0xef, 0xcc, 0x8b, 0x77, 0x0d, 0xc7, - 0xda, 0x41, 0x59, 0x7c, 0x51, 0x57, 0x48, 0x8d, 0x77, 0x24, 0xe0, 0x3f, 0xb8, 0xd8, 0x4a, 0x37, - 0x6a, 0x43, 0xb8, 0xf4, 0x15, 0x18, 0xa1, 0x1c, 0xc3, 0x87, 0xb6, 0x69, 0xb2, 0xee, 0x65, 0x86 - }; - - auto result = MUST(ByteBuffer::create_uninitialized(64)); - auto output = result.bytes(); - Crypto::Cipher::ChaCha20 cipher(ReadonlyBytes { key, 32 }, ReadonlyBytes { nonce, 12 }, initial_block_counter); - cipher.encrypt(ReadonlyBytes { plaintext, 64 }, output); - auto expected = ReadonlyBytes { ciphertext, 64 }; - EXPECT_EQ(result, expected); -} - -TEST_CASE(test_vector_2) -{ - u8 key[32] { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 - }; - u8 nonce[12] { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 - }; - u32 initial_block_counter { 1 }; - u8 plaintext[375] { - 0x41, 0x6e, 0x79, 0x20, 0x73, 0x75, 0x62, 0x6d, 0x69, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x20, 0x74, - 0x6f, 0x20, 0x74, 0x68, 0x65, 0x20, 0x49, 0x45, 0x54, 0x46, 0x20, 0x69, 0x6e, 0x74, 0x65, 0x6e, - 0x64, 0x65, 0x64, 0x20, 0x62, 0x79, 0x20, 0x74, 0x68, 0x65, 0x20, 0x43, 0x6f, 0x6e, 0x74, 0x72, - 0x69, 0x62, 0x75, 0x74, 0x6f, 0x72, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x70, 0x75, 0x62, 0x6c, 0x69, - 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x73, 0x20, 0x61, 0x6c, 0x6c, 0x20, 0x6f, 0x72, - 0x20, 0x70, 0x61, 0x72, 0x74, 0x20, 0x6f, 0x66, 0x20, 0x61, 0x6e, 0x20, 0x49, 0x45, 0x54, 0x46, - 0x20, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2d, 0x44, 0x72, 0x61, 0x66, 0x74, 0x20, - 0x6f, 0x72, 0x20, 0x52, 0x46, 0x43, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x61, 0x6e, 0x79, 0x20, 0x73, - 0x74, 0x61, 0x74, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x20, 0x6d, 0x61, 0x64, 0x65, 0x20, 0x77, 0x69, - 0x74, 0x68, 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74, - 0x20, 0x6f, 0x66, 0x20, 0x61, 0x6e, 0x20, 0x49, 0x45, 0x54, 0x46, 0x20, 0x61, 0x63, 0x74, 0x69, - 0x76, 0x69, 0x74, 0x79, 0x20, 0x69, 0x73, 0x20, 0x63, 0x6f, 0x6e, 0x73, 0x69, 0x64, 0x65, 0x72, - 0x65, 0x64, 0x20, 0x61, 0x6e, 0x20, 0x22, 0x49, 0x45, 0x54, 0x46, 0x20, 0x43, 0x6f, 0x6e, 0x74, - 0x72, 0x69, 0x62, 0x75, 0x74, 0x69, 0x6f, 0x6e, 0x22, 0x2e, 0x20, 0x53, 0x75, 0x63, 0x68, 0x20, - 0x73, 0x74, 0x61, 0x74, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x73, 0x20, 0x69, 0x6e, 0x63, 0x6c, 0x75, - 0x64, 0x65, 0x20, 0x6f, 0x72, 0x61, 0x6c, 0x20, 0x73, 0x74, 0x61, 0x74, 0x65, 0x6d, 0x65, 0x6e, - 0x74, 0x73, 0x20, 0x69, 0x6e, 0x20, 0x49, 0x45, 0x54, 0x46, 0x20, 0x73, 0x65, 0x73, 0x73, 0x69, - 0x6f, 0x6e, 0x73, 0x2c, 0x20, 0x61, 0x73, 0x20, 0x77, 0x65, 0x6c, 0x6c, 0x20, 0x61, 0x73, 0x20, - 0x77, 0x72, 0x69, 0x74, 0x74, 0x65, 0x6e, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x65, 0x6c, 0x65, 0x63, - 0x74, 0x72, 0x6f, 0x6e, 0x69, 0x63, 0x20, 0x63, 0x6f, 0x6d, 0x6d, 0x75, 0x6e, 0x69, 0x63, 0x61, - 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x20, 0x6d, 0x61, 0x64, 0x65, 0x20, 0x61, 0x74, 0x20, 0x61, 0x6e, - 0x79, 0x20, 0x74, 0x69, 0x6d, 0x65, 0x20, 0x6f, 0x72, 0x20, 0x70, 0x6c, 0x61, 0x63, 0x65, 0x2c, - 0x20, 0x77, 0x68, 0x69, 0x63, 0x68, 0x20, 0x61, 0x72, 0x65, 0x20, 0x61, 0x64, 0x64, 0x72, 0x65, - 0x73, 0x73, 0x65, 0x64, 0x20, 0x74, 0x6f - }; - u8 ciphertext[375] { - 0xa3, 0xfb, 0xf0, 0x7d, 0xf3, 0xfa, 0x2f, 0xde, 0x4f, 0x37, 0x6c, 0xa2, 0x3e, 0x82, 0x73, 0x70, - 0x41, 0x60, 0x5d, 0x9f, 0x4f, 0x4f, 0x57, 0xbd, 0x8c, 0xff, 0x2c, 0x1d, 0x4b, 0x79, 0x55, 0xec, - 0x2a, 0x97, 0x94, 0x8b, 0xd3, 0x72, 0x29, 0x15, 0xc8, 0xf3, 0xd3, 0x37, 0xf7, 0xd3, 0x70, 0x05, - 0x0e, 0x9e, 0x96, 0xd6, 0x47, 0xb7, 0xc3, 0x9f, 0x56, 0xe0, 0x31, 0xca, 0x5e, 0xb6, 0x25, 0x0d, - 0x40, 0x42, 0xe0, 0x27, 0x85, 0xec, 0xec, 0xfa, 0x4b, 0x4b, 0xb5, 0xe8, 0xea, 0xd0, 0x44, 0x0e, - 0x20, 0xb6, 0xe8, 0xdb, 0x09, 0xd8, 0x81, 0xa7, 0xc6, 0x13, 0x2f, 0x42, 0x0e, 0x52, 0x79, 0x50, - 0x42, 0xbd, 0xfa, 0x77, 0x73, 0xd8, 0xa9, 0x05, 0x14, 0x47, 0xb3, 0x29, 0x1c, 0xe1, 0x41, 0x1c, - 0x68, 0x04, 0x65, 0x55, 0x2a, 0xa6, 0xc4, 0x05, 0xb7, 0x76, 0x4d, 0x5e, 0x87, 0xbe, 0xa8, 0x5a, - 0xd0, 0x0f, 0x84, 0x49, 0xed, 0x8f, 0x72, 0xd0, 0xd6, 0x62, 0xab, 0x05, 0x26, 0x91, 0xca, 0x66, - 0x42, 0x4b, 0xc8, 0x6d, 0x2d, 0xf8, 0x0e, 0xa4, 0x1f, 0x43, 0xab, 0xf9, 0x37, 0xd3, 0x25, 0x9d, - 0xc4, 0xb2, 0xd0, 0xdf, 0xb4, 0x8a, 0x6c, 0x91, 0x39, 0xdd, 0xd7, 0xf7, 0x69, 0x66, 0xe9, 0x28, - 0xe6, 0x35, 0x55, 0x3b, 0xa7, 0x6c, 0x5c, 0x87, 0x9d, 0x7b, 0x35, 0xd4, 0x9e, 0xb2, 0xe6, 0x2b, - 0x08, 0x71, 0xcd, 0xac, 0x63, 0x89, 0x39, 0xe2, 0x5e, 0x8a, 0x1e, 0x0e, 0xf9, 0xd5, 0x28, 0x0f, - 0xa8, 0xca, 0x32, 0x8b, 0x35, 0x1c, 0x3c, 0x76, 0x59, 0x89, 0xcb, 0xcf, 0x3d, 0xaa, 0x8b, 0x6c, - 0xcc, 0x3a, 0xaf, 0x9f, 0x39, 0x79, 0xc9, 0x2b, 0x37, 0x20, 0xfc, 0x88, 0xdc, 0x95, 0xed, 0x84, - 0xa1, 0xbe, 0x05, 0x9c, 0x64, 0x99, 0xb9, 0xfd, 0xa2, 0x36, 0xe7, 0xe8, 0x18, 0xb0, 0x4b, 0x0b, - 0xc3, 0x9c, 0x1e, 0x87, 0x6b, 0x19, 0x3b, 0xfe, 0x55, 0x69, 0x75, 0x3f, 0x88, 0x12, 0x8c, 0xc0, - 0x8a, 0xaa, 0x9b, 0x63, 0xd1, 0xa1, 0x6f, 0x80, 0xef, 0x25, 0x54, 0xd7, 0x18, 0x9c, 0x41, 0x1f, - 0x58, 0x69, 0xca, 0x52, 0xc5, 0xb8, 0x3f, 0xa3, 0x6f, 0xf2, 0x16, 0xb9, 0xc1, 0xd3, 0x00, 0x62, - 0xbe, 0xbc, 0xfd, 0x2d, 0xc5, 0xbc, 0xe0, 0x91, 0x19, 0x34, 0xfd, 0xa7, 0x9a, 0x86, 0xf6, 0xe6, - 0x98, 0xce, 0xd7, 0x59, 0xc3, 0xff, 0x9b, 0x64, 0x77, 0x33, 0x8f, 0x3d, 0xa4, 0xf9, 0xcd, 0x85, - 0x14, 0xea, 0x99, 0x82, 0xcc, 0xaf, 0xb3, 0x41, 0xb2, 0x38, 0x4d, 0xd9, 0x02, 0xf3, 0xd1, 0xab, - 0x7a, 0xc6, 0x1d, 0xd2, 0x9c, 0x6f, 0x21, 0xba, 0x5b, 0x86, 0x2f, 0x37, 0x30, 0xe3, 0x7c, 0xfd, - 0xc4, 0xfd, 0x80, 0x6c, 0x22, 0xf2, 0x21 - }; - - auto result = MUST(ByteBuffer::create_uninitialized(375)); - auto output = result.bytes(); - Crypto::Cipher::ChaCha20 cipher(ReadonlyBytes { key, 32 }, ReadonlyBytes { nonce, 12 }, initial_block_counter); - cipher.encrypt(ReadonlyBytes { plaintext, 375 }, output); - auto expected = ReadonlyBytes { ciphertext, 375 }; - EXPECT_EQ(result, expected); -} - -TEST_CASE(test_vector_3) -{ - u8 key[32] { - 0x1c, 0x92, 0x40, 0xa5, 0xeb, 0x55, 0xd3, 0x8a, 0xf3, 0x33, 0x88, 0x86, 0x04, 0xf6, 0xb5, 0xf0, - 0x47, 0x39, 0x17, 0xc1, 0x40, 0x2b, 0x80, 0x09, 0x9d, 0xca, 0x5c, 0xbc, 0x20, 0x70, 0x75, 0xc0 - }; - u8 nonce[12] { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 - }; - u32 initial_block_counter { 42 }; - u8 plaintext[127] { - 0x27, 0x54, 0x77, 0x61, 0x73, 0x20, 0x62, 0x72, 0x69, 0x6c, 0x6c, 0x69, 0x67, 0x2c, 0x20, 0x61, - 0x6e, 0x64, 0x20, 0x74, 0x68, 0x65, 0x20, 0x73, 0x6c, 0x69, 0x74, 0x68, 0x79, 0x20, 0x74, 0x6f, - 0x76, 0x65, 0x73, 0x0a, 0x44, 0x69, 0x64, 0x20, 0x67, 0x79, 0x72, 0x65, 0x20, 0x61, 0x6e, 0x64, - 0x20, 0x67, 0x69, 0x6d, 0x62, 0x6c, 0x65, 0x20, 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x77, - 0x61, 0x62, 0x65, 0x3a, 0x0a, 0x41, 0x6c, 0x6c, 0x20, 0x6d, 0x69, 0x6d, 0x73, 0x79, 0x20, 0x77, - 0x65, 0x72, 0x65, 0x20, 0x74, 0x68, 0x65, 0x20, 0x62, 0x6f, 0x72, 0x6f, 0x67, 0x6f, 0x76, 0x65, - 0x73, 0x2c, 0x0a, 0x41, 0x6e, 0x64, 0x20, 0x74, 0x68, 0x65, 0x20, 0x6d, 0x6f, 0x6d, 0x65, 0x20, - 0x72, 0x61, 0x74, 0x68, 0x73, 0x20, 0x6f, 0x75, 0x74, 0x67, 0x72, 0x61, 0x62, 0x65, 0x2e - }; - u8 ciphertext[127] { - 0x62, 0xe6, 0x34, 0x7f, 0x95, 0xed, 0x87, 0xa4, 0x5f, 0xfa, 0xe7, 0x42, 0x6f, 0x27, 0xa1, 0xdf, - 0x5f, 0xb6, 0x91, 0x10, 0x04, 0x4c, 0x0d, 0x73, 0x11, 0x8e, 0xff, 0xa9, 0x5b, 0x01, 0xe5, 0xcf, - 0x16, 0x6d, 0x3d, 0xf2, 0xd7, 0x21, 0xca, 0xf9, 0xb2, 0x1e, 0x5f, 0xb1, 0x4c, 0x61, 0x68, 0x71, - 0xfd, 0x84, 0xc5, 0x4f, 0x9d, 0x65, 0xb2, 0x83, 0x19, 0x6c, 0x7f, 0xe4, 0xf6, 0x05, 0x53, 0xeb, - 0xf3, 0x9c, 0x64, 0x02, 0xc4, 0x22, 0x34, 0xe3, 0x2a, 0x35, 0x6b, 0x3e, 0x76, 0x43, 0x12, 0xa6, - 0x1a, 0x55, 0x32, 0x05, 0x57, 0x16, 0xea, 0xd6, 0x96, 0x25, 0x68, 0xf8, 0x7d, 0x3f, 0x3f, 0x77, - 0x04, 0xc6, 0xa8, 0xd1, 0xbc, 0xd1, 0xbf, 0x4d, 0x50, 0xd6, 0x15, 0x4b, 0x6d, 0xa7, 0x31, 0xb1, - 0x87, 0xb5, 0x8d, 0xfd, 0x72, 0x8a, 0xfa, 0x36, 0x75, 0x7a, 0x79, 0x7a, 0xc1, 0x88, 0xd1 - }; - - auto result = MUST(ByteBuffer::create_uninitialized(127)); - auto output = result.bytes(); - Crypto::Cipher::ChaCha20 cipher(ReadonlyBytes { key, 32 }, ReadonlyBytes { nonce, 12 }, initial_block_counter); - cipher.encrypt(ReadonlyBytes { plaintext, 127 }, output); - auto expected = ReadonlyBytes { ciphertext, 127 }; - EXPECT_EQ(result, expected); -}