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/* BEGIN_HEADER */
#include "mbedtls/chacha20.h"
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_CHACHA20_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void chacha20_crypt(data_t *key_str,
data_t *nonce_str,
int counter,
data_t *src_str,
data_t *expected_output_str)
{
unsigned char output[375];
mbedtls_chacha20_context ctx;
memset(output, 0x00, sizeof(output));
TEST_ASSERT(src_str->len == expected_output_str->len);
TEST_ASSERT(key_str->len == 32U);
TEST_ASSERT(nonce_str->len == 12U);
/*
* Test the integrated API
*/
TEST_ASSERT(mbedtls_chacha20_crypt(key_str->x, nonce_str->x, counter, src_str->len, src_str->x,
output) == 0);
TEST_MEMORY_COMPARE(output, expected_output_str->len,
expected_output_str->x, expected_output_str->len);
/*
* Test the streaming API
*/
mbedtls_chacha20_init(&ctx);
TEST_ASSERT(mbedtls_chacha20_setkey(&ctx, key_str->x) == 0);
TEST_ASSERT(mbedtls_chacha20_starts(&ctx, nonce_str->x, counter) == 0);
memset(output, 0x00, sizeof(output));
TEST_ASSERT(mbedtls_chacha20_update(&ctx, src_str->len, src_str->x, output) == 0);
TEST_MEMORY_COMPARE(output, expected_output_str->len,
expected_output_str->x, expected_output_str->len);
/*
* Test the streaming API again, piecewise
*/
/* Don't free/init the context nor set the key again,
* in order to test that starts() does the right thing. */
TEST_ASSERT(mbedtls_chacha20_starts(&ctx, nonce_str->x, counter) == 0);
memset(output, 0x00, sizeof(output));
TEST_ASSERT(mbedtls_chacha20_update(&ctx, 1, src_str->x, output) == 0);
TEST_ASSERT(mbedtls_chacha20_update(&ctx, src_str->len - 1,
src_str->x + 1, output + 1) == 0);
TEST_MEMORY_COMPARE(output, expected_output_str->len,
expected_output_str->x, expected_output_str->len);
mbedtls_chacha20_free(&ctx);
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
void chacha20_self_test()
{
TEST_ASSERT(mbedtls_chacha20_self_test(1) == 0);
}
/* END_CASE */
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