| /** |
| * \file chacha20.c |
| * |
| * \brief ChaCha20 cipher. |
| * |
| * \author Daniel King <damaki.gh@gmail.com> |
| * |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
| */ |
| |
| #include "common.h" |
| |
| #if defined(MBEDTLS_CHACHA20_C) |
| |
| #include "mbedtls/chacha20.h" |
| #include "mbedtls/platform_util.h" |
| #include "mbedtls/error.h" |
| |
| #include <stddef.h> |
| #include <string.h> |
| |
| #include "mbedtls/platform.h" |
| |
| #if !defined(MBEDTLS_CHACHA20_ALT) |
| |
| #define ROTL32(value, amount) \ |
| ((uint32_t) ((value) << (amount)) | ((value) >> (32 - (amount)))) |
| |
| #define CHACHA20_CTR_INDEX (12U) |
| |
| #define CHACHA20_BLOCK_SIZE_BYTES (4U * 16U) |
| |
| /** |
| * \brief ChaCha20 quarter round operation. |
| * |
| * The quarter round is defined as follows (from RFC 7539): |
| * 1. a += b; d ^= a; d <<<= 16; |
| * 2. c += d; b ^= c; b <<<= 12; |
| * 3. a += b; d ^= a; d <<<= 8; |
| * 4. c += d; b ^= c; b <<<= 7; |
| * |
| * \param state ChaCha20 state to modify. |
| * \param a The index of 'a' in the state. |
| * \param b The index of 'b' in the state. |
| * \param c The index of 'c' in the state. |
| * \param d The index of 'd' in the state. |
| */ |
| static inline void chacha20_quarter_round(uint32_t state[16], |
| size_t a, |
| size_t b, |
| size_t c, |
| size_t d) |
| { |
| /* a += b; d ^= a; d <<<= 16; */ |
| state[a] += state[b]; |
| state[d] ^= state[a]; |
| state[d] = ROTL32(state[d], 16); |
| |
| /* c += d; b ^= c; b <<<= 12 */ |
| state[c] += state[d]; |
| state[b] ^= state[c]; |
| state[b] = ROTL32(state[b], 12); |
| |
| /* a += b; d ^= a; d <<<= 8; */ |
| state[a] += state[b]; |
| state[d] ^= state[a]; |
| state[d] = ROTL32(state[d], 8); |
| |
| /* c += d; b ^= c; b <<<= 7; */ |
| state[c] += state[d]; |
| state[b] ^= state[c]; |
| state[b] = ROTL32(state[b], 7); |
| } |
| |
| /** |
| * \brief Perform the ChaCha20 inner block operation. |
| * |
| * This function performs two rounds: the column round and the |
| * diagonal round. |
| * |
| * \param state The ChaCha20 state to update. |
| */ |
| static void chacha20_inner_block(uint32_t state[16]) |
| { |
| chacha20_quarter_round(state, 0, 4, 8, 12); |
| chacha20_quarter_round(state, 1, 5, 9, 13); |
| chacha20_quarter_round(state, 2, 6, 10, 14); |
| chacha20_quarter_round(state, 3, 7, 11, 15); |
| |
| chacha20_quarter_round(state, 0, 5, 10, 15); |
| chacha20_quarter_round(state, 1, 6, 11, 12); |
| chacha20_quarter_round(state, 2, 7, 8, 13); |
| chacha20_quarter_round(state, 3, 4, 9, 14); |
| } |
| |
| /** |
| * \brief Generates a keystream block. |
| * |
| * \param initial_state The initial ChaCha20 state (key, nonce, counter). |
| * \param keystream Generated keystream bytes are written to this buffer. |
| */ |
| static void chacha20_block(const uint32_t initial_state[16], |
| unsigned char keystream[64]) |
| { |
| uint32_t working_state[16]; |
| size_t i; |
| |
| memcpy(working_state, |
| initial_state, |
| CHACHA20_BLOCK_SIZE_BYTES); |
| |
| for (i = 0U; i < 10U; i++) { |
| chacha20_inner_block(working_state); |
| } |
| |
| working_state[0] += initial_state[0]; |
| working_state[1] += initial_state[1]; |
| working_state[2] += initial_state[2]; |
| working_state[3] += initial_state[3]; |
| working_state[4] += initial_state[4]; |
| working_state[5] += initial_state[5]; |
| working_state[6] += initial_state[6]; |
| working_state[7] += initial_state[7]; |
| working_state[8] += initial_state[8]; |
| working_state[9] += initial_state[9]; |
| working_state[10] += initial_state[10]; |
| working_state[11] += initial_state[11]; |
| working_state[12] += initial_state[12]; |
| working_state[13] += initial_state[13]; |
| working_state[14] += initial_state[14]; |
| working_state[15] += initial_state[15]; |
| |
| for (i = 0U; i < 16; i++) { |
| size_t offset = i * 4U; |
| |
| MBEDTLS_PUT_UINT32_LE(working_state[i], keystream, offset); |
| } |
| |
| mbedtls_platform_zeroize(working_state, sizeof(working_state)); |
| } |
| |
| void mbedtls_chacha20_init(mbedtls_chacha20_context *ctx) |
| { |
| mbedtls_platform_zeroize(ctx->state, sizeof(ctx->state)); |
| mbedtls_platform_zeroize(ctx->keystream8, sizeof(ctx->keystream8)); |
| |
| /* Initially, there's no keystream bytes available */ |
| ctx->keystream_bytes_used = CHACHA20_BLOCK_SIZE_BYTES; |
| } |
| |
| void mbedtls_chacha20_free(mbedtls_chacha20_context *ctx) |
| { |
| if (ctx != NULL) { |
| mbedtls_platform_zeroize(ctx, sizeof(mbedtls_chacha20_context)); |
| } |
| } |
| |
| int mbedtls_chacha20_setkey(mbedtls_chacha20_context *ctx, |
| const unsigned char key[32]) |
| { |
| /* ChaCha20 constants - the string "expand 32-byte k" */ |
| ctx->state[0] = 0x61707865; |
| ctx->state[1] = 0x3320646e; |
| ctx->state[2] = 0x79622d32; |
| ctx->state[3] = 0x6b206574; |
| |
| /* Set key */ |
| ctx->state[4] = MBEDTLS_GET_UINT32_LE(key, 0); |
| ctx->state[5] = MBEDTLS_GET_UINT32_LE(key, 4); |
| ctx->state[6] = MBEDTLS_GET_UINT32_LE(key, 8); |
| ctx->state[7] = MBEDTLS_GET_UINT32_LE(key, 12); |
| ctx->state[8] = MBEDTLS_GET_UINT32_LE(key, 16); |
| ctx->state[9] = MBEDTLS_GET_UINT32_LE(key, 20); |
| ctx->state[10] = MBEDTLS_GET_UINT32_LE(key, 24); |
| ctx->state[11] = MBEDTLS_GET_UINT32_LE(key, 28); |
| |
| return 0; |
| } |
| |
| int mbedtls_chacha20_starts(mbedtls_chacha20_context *ctx, |
| const unsigned char nonce[12], |
| uint32_t counter) |
| { |
| /* Counter */ |
| ctx->state[12] = counter; |
| |
| /* Nonce */ |
| ctx->state[13] = MBEDTLS_GET_UINT32_LE(nonce, 0); |
| ctx->state[14] = MBEDTLS_GET_UINT32_LE(nonce, 4); |
| ctx->state[15] = MBEDTLS_GET_UINT32_LE(nonce, 8); |
| |
| mbedtls_platform_zeroize(ctx->keystream8, sizeof(ctx->keystream8)); |
| |
| /* Initially, there's no keystream bytes available */ |
| ctx->keystream_bytes_used = CHACHA20_BLOCK_SIZE_BYTES; |
| |
| return 0; |
| } |
| |
| int mbedtls_chacha20_update(mbedtls_chacha20_context *ctx, |
| size_t size, |
| const unsigned char *input, |
| unsigned char *output) |
| { |
| size_t offset = 0U; |
| |
| /* Use leftover keystream bytes, if available */ |
| while (size > 0U && ctx->keystream_bytes_used < CHACHA20_BLOCK_SIZE_BYTES) { |
| output[offset] = input[offset] |
| ^ ctx->keystream8[ctx->keystream_bytes_used]; |
| |
| ctx->keystream_bytes_used++; |
| offset++; |
| size--; |
| } |
| |
| /* Process full blocks */ |
| while (size >= CHACHA20_BLOCK_SIZE_BYTES) { |
| /* Generate new keystream block and increment counter */ |
| chacha20_block(ctx->state, ctx->keystream8); |
| ctx->state[CHACHA20_CTR_INDEX]++; |
| |
| mbedtls_xor(output + offset, input + offset, ctx->keystream8, 64U); |
| |
| offset += CHACHA20_BLOCK_SIZE_BYTES; |
| size -= CHACHA20_BLOCK_SIZE_BYTES; |
| } |
| |
| /* Last (partial) block */ |
| if (size > 0U) { |
| /* Generate new keystream block and increment counter */ |
| chacha20_block(ctx->state, ctx->keystream8); |
| ctx->state[CHACHA20_CTR_INDEX]++; |
| |
| mbedtls_xor(output + offset, input + offset, ctx->keystream8, size); |
| |
| ctx->keystream_bytes_used = size; |
| |
| } |
| |
| return 0; |
| } |
| |
| int mbedtls_chacha20_crypt(const unsigned char key[32], |
| const unsigned char nonce[12], |
| uint32_t counter, |
| size_t data_len, |
| const unsigned char *input, |
| unsigned char *output) |
| { |
| mbedtls_chacha20_context ctx; |
| int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| |
| mbedtls_chacha20_init(&ctx); |
| |
| ret = mbedtls_chacha20_setkey(&ctx, key); |
| if (ret != 0) { |
| goto cleanup; |
| } |
| |
| ret = mbedtls_chacha20_starts(&ctx, nonce, counter); |
| if (ret != 0) { |
| goto cleanup; |
| } |
| |
| ret = mbedtls_chacha20_update(&ctx, data_len, input, output); |
| |
| cleanup: |
| mbedtls_chacha20_free(&ctx); |
| return ret; |
| } |
| |
| #endif /* !MBEDTLS_CHACHA20_ALT */ |
| |
| #if defined(MBEDTLS_SELF_TEST) |
| |
| static const unsigned char test_keys[2][32] = |
| { |
| { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }, |
| { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 |
| } |
| }; |
| |
| static const unsigned char test_nonces[2][12] = |
| { |
| { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00 |
| }, |
| { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x02 |
| } |
| }; |
| |
| static const uint32_t test_counters[2] = |
| { |
| 0U, |
| 1U |
| }; |
| |
| static const unsigned char test_input[2][375] = |
| { |
| { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }, |
| { |
| 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 |
| } |
| }; |
| |
| static const unsigned char test_output[2][375] = |
| { |
| { |
| 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 |
| }, |
| { |
| 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 |
| } |
| }; |
| |
| static const size_t test_lengths[2] = |
| { |
| 64U, |
| 375U |
| }; |
| |
| /* Make sure no other definition is already present. */ |
| #undef ASSERT |
| |
| #define ASSERT(cond, args) \ |
| do \ |
| { \ |
| if (!(cond)) \ |
| { \ |
| if (verbose != 0) \ |
| mbedtls_printf args; \ |
| \ |
| return -1; \ |
| } \ |
| } \ |
| while (0) |
| |
| int mbedtls_chacha20_self_test(int verbose) |
| { |
| unsigned char output[381]; |
| unsigned i; |
| int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| |
| for (i = 0U; i < 2U; i++) { |
| if (verbose != 0) { |
| mbedtls_printf(" ChaCha20 test %u ", i); |
| } |
| |
| ret = mbedtls_chacha20_crypt(test_keys[i], |
| test_nonces[i], |
| test_counters[i], |
| test_lengths[i], |
| test_input[i], |
| output); |
| |
| ASSERT(0 == ret, ("error code: %i\n", ret)); |
| |
| ASSERT(0 == memcmp(output, test_output[i], test_lengths[i]), |
| ("failed (output)\n")); |
| |
| if (verbose != 0) { |
| mbedtls_printf("passed\n"); |
| } |
| } |
| |
| if (verbose != 0) { |
| mbedtls_printf("\n"); |
| } |
| |
| return 0; |
| } |
| |
| #endif /* MBEDTLS_SELF_TEST */ |
| |
| #endif /* !MBEDTLS_CHACHA20_C */ |
