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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*/
/* The implementation is based on:
* Public Domain poly1305 from Andrew Moon
* https://github.com/floodyberry/poly1305-donna
*/
#include "tomcrypt.h"
#ifdef LTC_POLY1305
int poly1305_test(void)
{
#ifndef LTC_TEST
return CRYPT_NOP;
#else
/* https://tools.ietf.org/html/rfc7539#section-2.5.2 */
unsigned char k[] = { 0x85, 0xd6, 0xbe, 0x78, 0x57, 0x55, 0x6d, 0x33, 0x7f, 0x44, 0x52, 0xfe, 0x42, 0xd5, 0x06, 0xa8, 0x01, 0x03, 0x80, 0x8a, 0xfb, 0x0d, 0xb2, 0xfd, 0x4a, 0xbf, 0xf6, 0xaf, 0x41, 0x49, 0xf5, 0x1b };
unsigned char tag[] = { 0xA8, 0x06, 0x1D, 0xC1, 0x30, 0x51, 0x36, 0xC6, 0xC2, 0x2B, 0x8B, 0xAF, 0x0C, 0x01, 0x27, 0xA9 };
char m[] = "Cryptographic Forum Research Group";
unsigned long len = 16, mlen = strlen(m);
unsigned char out[1000];
poly1305_state st;
int err;
/* process piece by piece */
if ((err = poly1305_init(&st, k, 32)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m, 5)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m + 5, 4)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m + 9, 3)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m + 12, 2)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m + 14, 1)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m + 15, mlen - 15)) != CRYPT_OK) return err;
if ((err = poly1305_done(&st, out, &len)) != CRYPT_OK) return err;
if (compare_testvector(out, len, tag, sizeof(tag), "POLY1305-TV1", 1) != 0) return CRYPT_FAIL_TESTVECTOR;
/* process in one go */
if ((err = poly1305_init(&st, k, 32)) != CRYPT_OK) return err;
if ((err = poly1305_process(&st, (unsigned char*)m, mlen)) != CRYPT_OK) return err;
if ((err = poly1305_done(&st, out, &len)) != CRYPT_OK) return err;
if (compare_testvector(out, len, tag, sizeof(tag), "POLY1305-TV2", 1) != 0) return CRYPT_FAIL_TESTVECTOR;
return CRYPT_OK;
#endif
}
#endif
/* ref: $Format:%D$ */
/* git commit: $Format:%H$ */
/* commit time: $Format:%ai$ */
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