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Diffstat (limited to 'libtomcrypt/tests/ecc_test.c')
| -rw-r--r-- | libtomcrypt/tests/ecc_test.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/libtomcrypt/tests/ecc_test.c b/libtomcrypt/tests/ecc_test.c new file mode 100644 index 0000000..a68fc31 --- /dev/null +++ b/libtomcrypt/tests/ecc_test.c @@ -0,0 +1,268 @@ +/* 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. + */ +#include <tomcrypt_test.h> + +#if defined(LTC_MECC) && defined(LTC_TEST_MPI) + +static unsigned int sizes[] = { +#ifdef LTC_ECC112 +14, +#endif +#ifdef LTC_ECC128 +16, +#endif +#ifdef LTC_ECC160 +20, +#endif +#ifdef LTC_ECC192 +24, +#endif +#ifdef LTC_ECC224 +28, +#endif +#ifdef LTC_ECC256 +32, +#endif +#ifdef LTC_ECC384 +48, +#endif +#ifdef LTC_ECC521 +65 +#endif +}; + +#ifdef LTC_ECC_SHAMIR +int ecc_test_shamir(void) +{ + void *modulus, *mp, *kA, *kB, *rA, *rB; + ecc_point *G, *A, *B, *C1, *C2; + int x, y, z; + unsigned char buf[ECC_BUF_SIZE]; + + DO(mp_init_multi(&kA, &kB, &rA, &rB, &modulus, NULL)); + LTC_ARGCHK((G = ltc_ecc_new_point()) != NULL); + LTC_ARGCHK((A = ltc_ecc_new_point()) != NULL); + LTC_ARGCHK((B = ltc_ecc_new_point()) != NULL); + LTC_ARGCHK((C1 = ltc_ecc_new_point()) != NULL); + LTC_ARGCHK((C2 = ltc_ecc_new_point()) != NULL); + + for (x = 0; x < (int)(sizeof(sizes)/sizeof(sizes[0])); x++) { + /* get the base point */ + for (z = 0; ltc_ecc_sets[z].name; z++) { + if (sizes[z] < (unsigned int)ltc_ecc_sets[z].size) break; + } + LTC_ARGCHK(ltc_ecc_sets[z].name != NULL); + + /* load it */ + DO(mp_read_radix(G->x, ltc_ecc_sets[z].Gx, 16)); + DO(mp_read_radix(G->y, ltc_ecc_sets[z].Gy, 16)); + DO(mp_set(G->z, 1)); + DO(mp_read_radix(modulus, ltc_ecc_sets[z].prime, 16)); + DO(mp_montgomery_setup(modulus, &mp)); + + /* do 100 random tests */ + for (y = 0; y < 100; y++) { + /* pick a random r1, r2 */ + LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]); + DO(mp_read_unsigned_bin(rA, buf, sizes[x])); + LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]); + DO(mp_read_unsigned_bin(rB, buf, sizes[x])); + + /* compute rA * G = A */ + DO(ltc_mp.ecc_ptmul(rA, G, A, modulus, 1)); + + /* compute rB * G = B */ + DO(ltc_mp.ecc_ptmul(rB, G, B, modulus, 1)); + + /* pick a random kA, kB */ + LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]); + DO(mp_read_unsigned_bin(kA, buf, sizes[x])); + LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]); + DO(mp_read_unsigned_bin(kB, buf, sizes[x])); + + /* now, compute kA*A + kB*B = C1 using the older method */ + DO(ltc_mp.ecc_ptmul(kA, A, C1, modulus, 0)); + DO(ltc_mp.ecc_ptmul(kB, B, C2, modulus, 0)); + DO(ltc_mp.ecc_ptadd(C1, C2, C1, modulus, mp)); + DO(ltc_mp.ecc_map(C1, modulus, mp)); + + /* now compute using mul2add */ + DO(ltc_mp.ecc_mul2add(A, kA, B, kB, C2, modulus)); + + /* is they the sames? */ + if ((mp_cmp(C1->x, C2->x) != LTC_MP_EQ) || (mp_cmp(C1->y, C2->y) != LTC_MP_EQ) || (mp_cmp(C1->z, C2->z) != LTC_MP_EQ)) { + fprintf(stderr, "ECC failed shamir test: size=%d, testno=%d\n", sizes[x], y); + return 1; + } + } + mp_montgomery_free(mp); + } + ltc_ecc_del_point(C2); + ltc_ecc_del_point(C1); + ltc_ecc_del_point(B); + ltc_ecc_del_point(A); + ltc_ecc_del_point(G); + mp_clear_multi(kA, kB, rA, rB, modulus, NULL); + return 0; +} +#endif + +int ecc_tests (void) +{ + unsigned char buf[4][4096], ch; + unsigned long x, y, z, s; + int stat, stat2; + ecc_key usera, userb, pubKey, privKey; + + DO(ecc_test ()); + + for (s = 0; s < (sizeof(sizes)/sizeof(sizes[0])); s++) { + /* make up two keys */ + DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &usera)); + DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &userb)); + + /* make the shared secret */ + x = sizeof(buf[0]); + DO(ecc_shared_secret (&usera, &userb, buf[0], &x)); + + y = sizeof(buf[1]); + DO(ecc_shared_secret (&userb, &usera, buf[1], &y)); + + if (y != x) { + fprintf(stderr, "ecc Shared keys are not same size."); + return 1; + } + + if (memcmp (buf[0], buf[1], x)) { + fprintf(stderr, "ecc Shared keys not same contents."); + return 1; + } + + /* now export userb */ + y = sizeof(buf[0]); + DO(ecc_export (buf[1], &y, PK_PUBLIC, &userb)); + ecc_free (&userb); + + /* import and make the shared secret again */ + DO(ecc_import (buf[1], y, &userb)); + + z = sizeof(buf[0]); + DO(ecc_shared_secret (&usera, &userb, buf[2], &z)); + + if (z != x) { + fprintf(stderr, "failed. Size don't match?"); + return 1; + } + if (memcmp (buf[0], buf[2], x)) { + fprintf(stderr, "Failed. Contents didn't match."); + return 1; + } + + /* export with ANSI X9.63 */ + y = sizeof(buf[1]); + DO(ecc_ansi_x963_export(&userb, buf[1], &y)); + ecc_free (&userb); + + /* now import the ANSI key */ + DO(ecc_ansi_x963_import(buf[1], y, &userb)); + + /* shared secret */ + z = sizeof(buf[0]); + DO(ecc_shared_secret (&usera, &userb, buf[2], &z)); + + if (z != x) { + fprintf(stderr, "failed. Size don't match?"); + return 1; + } + if (memcmp (buf[0], buf[2], x)) { + fprintf(stderr, "Failed. Contents didn't match."); + return 1; + } + + ecc_free (&usera); + ecc_free (&userb); + + /* test encrypt_key */ + DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &usera)); + + /* export key */ + x = sizeof(buf[0]); + DO(ecc_export(buf[0], &x, PK_PUBLIC, &usera)); + DO(ecc_import(buf[0], x, &pubKey)); + x = sizeof(buf[0]); + DO(ecc_export(buf[0], &x, PK_PRIVATE, &usera)); + DO(ecc_import(buf[0], x, &privKey)); + + for (ch = 0; ch < 32; ch++) { + buf[0][ch] = ch; + } + y = sizeof (buf[1]); + DO(ecc_encrypt_key (buf[0], 32, buf[1], &y, &yarrow_prng, find_prng ("yarrow"), find_hash ("sha256"), &pubKey)); + zeromem (buf[0], sizeof (buf[0])); + x = sizeof (buf[0]); + DO(ecc_decrypt_key (buf[1], y, buf[0], &x, &privKey)); + if (x != 32) { + fprintf(stderr, "Failed (length)"); + return 1; + } + for (ch = 0; ch < 32; ch++) { + if (buf[0][ch] != ch) { + fprintf(stderr, "Failed (contents)"); + return 1; + } + } + /* test sign_hash */ + for (ch = 0; ch < 16; ch++) { + buf[0][ch] = ch; + } + x = sizeof (buf[1]); + DO(ecc_sign_hash (buf[0], 16, buf[1], &x, &yarrow_prng, find_prng ("yarrow"), &privKey)); + DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat, &pubKey)); + buf[0][0] ^= 1; + DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat2, &privKey)); + if (!(stat == 1 && stat2 == 0)) { + fprintf(stderr, "ecc_verify_hash failed %d, %d, ", stat, stat2); + return 1; + } + /* test sign_hash_rfc7518 */ + for (ch = 0; ch < 16; ch++) { + buf[0][ch] = ch; + } + x = sizeof (buf[1]); + DO(ecc_sign_hash_rfc7518(buf[0], 16, buf[1], &x, &yarrow_prng, find_prng ("yarrow"), &privKey)); + DO(ecc_verify_hash_rfc7518(buf[1], x, buf[0], 16, &stat, &pubKey)); + buf[0][0] ^= 1; + DO(ecc_verify_hash_rfc7518(buf[1], x, buf[0], 16, &stat2, &privKey)); + if (!(stat == 1 && stat2 == 0)) { + fprintf(stderr, "ecc_verify_hash_rfc7518 failed %d, %d, ", stat, stat2); + return 1; + } + ecc_free (&usera); + ecc_free (&pubKey); + ecc_free (&privKey); + } +#ifdef LTC_ECC_SHAMIR + return ecc_test_shamir(); +#else + return 0; +#endif +} + +#else + +int ecc_tests(void) +{ + return CRYPT_NOP; +} + +#endif + +/* ref: $Format:%D$ */ +/* git commit: $Format:%H$ */ +/* commit time: $Format:%ai$ */ |