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-rw-r--r--library/chacha20.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/library/chacha20.c b/library/chacha20.c
new file mode 100644
index 00000000000..acaae5b2e98
--- /dev/null
+++ b/library/chacha20.c
@@ -0,0 +1,497 @@
+/**
+ * \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 */
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-20 16:33:07 +0000