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Exercise ChaCha20 with different output sizes

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This commit is contained in:
Frank Denis
2015-10-26 21:30:46 +01:00
parent b3417560f1
commit 437ce023c9
1 changed files with 34 additions and 10 deletions
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test/default/chacha20.c
+34 -10
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@@ -19,12 +19,16 @@ void tv(void)
"0100000000000000" },
{ "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f",
"0001020304050607" } };
unsigned char key[crypto_stream_chacha20_KEYBYTES];
unsigned char nonce[crypto_stream_chacha20_NONCEBYTES];
unsigned char out[160];
char out_hex[160 * 2 + 1];
size_t i = 0U;
unsigned char key[crypto_stream_chacha20_KEYBYTES];
unsigned char nonce[crypto_stream_chacha20_NONCEBYTES];
unsigned char *part;
unsigned char out[160];
unsigned char zero[160];
char out_hex[160 * 2 + 1];
size_t i = 0U;
size_t plen;
memset(zero, 0, sizeof zero);
do {
sodium_hex2bin((unsigned char *)key, sizeof key, tests[i].key_hex,
strlen(tests[i].key_hex), NULL, NULL, NULL);
@@ -33,6 +37,14 @@ void tv(void)
crypto_stream_chacha20(out, sizeof out, nonce, key);
sodium_bin2hex(out_hex, sizeof out_hex, out, sizeof out);
printf("[%s]\n", out_hex);
for (plen = 1U; plen < sizeof out; plen++) {
part = sodium_malloc(plen);
crypto_stream_chacha20_xor(part, out, plen, nonce, key);
if (memcmp(part, zero, plen) != 0) {
printf("Failed with length %lu\n", (unsigned long) plen);
}
sodium_free(part);
}
} while (++i < (sizeof tests) / (sizeof tests[0]));
randombytes_buf(out, sizeof out);
@@ -85,12 +97,16 @@ void tv_ietf(void)
{ "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f",
"000000090000004a00000000",
1U }};
unsigned char key[crypto_stream_chacha20_KEYBYTES];
unsigned char nonce[crypto_stream_chacha20_IETF_NONCEBYTES];
unsigned char out[160];
char out_hex[160 * 2 + 1];
size_t i = 0U;
unsigned char key[crypto_stream_chacha20_KEYBYTES];
unsigned char nonce[crypto_stream_chacha20_IETF_NONCEBYTES];
unsigned char *part;
unsigned char out[160];
unsigned char zero[160];
char out_hex[160 * 2 + 1];
size_t i = 0U;
size_t plen;
memset(zero, 0, sizeof zero);
do {
sodium_hex2bin((unsigned char *)key, sizeof key, tests[i].key_hex,
strlen(tests[i].key_hex), ": ", NULL, NULL);
@@ -100,6 +116,14 @@ void tv_ietf(void)
crypto_stream_chacha20_ietf_xor_ic(out, out, sizeof out, nonce, tests[i].ic, key);
sodium_bin2hex(out_hex, sizeof out_hex, out, sizeof out);
printf("[%s]\n", out_hex);
for (plen = 1U; plen < sizeof out; plen++) {
part = sodium_malloc(plen);
crypto_stream_chacha20_ietf_xor_ic(part, out, plen, nonce, tests[i].ic, key);
if (memcmp(part, zero, plen) != 0) {
printf("Failed with length %lu\n", (unsigned long) plen);
}
sodium_free(part);
}
} while (++i < (sizeof tests) / (sizeof tests[0]));
randombytes_buf(out, sizeof out);