* RTMP Diffie-Hellmann utilities
*/
+#include <stdint.h>
+#include <string.h>
+
#include "config.h"
-#include "rtmpdh.h"
+
+#include "libavutil/attributes.h"
+#include "libavutil/error.h"
+#include "libavutil/mem.h"
#include "libavutil/random_seed.h"
+#include "rtmpdh.h"
+
#define P1024 \
"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" \
"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" \
"F71C35FDAD44CFD2D74F9208BE258FF324943328F67329C0" \
"FFFFFFFFFFFFFFFF"
-#if CONFIG_NETTLE || CONFIG_GCRYPT
-#if CONFIG_NETTLE
+#if CONFIG_GMP || CONFIG_GCRYPT
+#if CONFIG_GMP
#define bn_new(bn) \
do { \
bn = av_malloc(sizeof(*bn)); \
#define bn_sub_word(bn, w) mpz_sub_ui(bn, bn, w)
#define bn_cmp_1(bn) mpz_cmp_ui(bn, 1)
#define bn_num_bytes(bn) (mpz_sizeinbase(bn, 2) + 7) / 8
-#define bn_bn2bin(bn, buf, len) nettle_mpz_get_str_256(len, buf, bn)
+#define bn_bn2bin(bn, buf, len) \
+ do { \
+ memset(buf, 0, len); \
+ if (bn_num_bytes(bn) <= len) \
+ mpz_export(buf, NULL, 1, 1, 0, 0, bn); \
+ } while (0)
#define bn_bin2bn(bn, buf, len) \
do { \
bn_new(bn); \
if (bn) \
- nettle_mpz_set_str_256_u(bn, len, buf); \
+ mpz_import(bn, len, 1, 1, 0, 0, buf); \
} while (0)
#define bn_hex2bn(bn, buf, ret) \
do { \
ret = 1; \
} while (0)
#define bn_modexp(bn, y, q, p) mpz_powm(bn, y, q, p)
-#define bn_random(bn, num_bits) \
- do { \
- gmp_randstate_t rs; \
- gmp_randinit_mt(rs); \
- gmp_randseed_ui(rs, av_get_random_seed()); \
- mpz_urandomb(bn, rs, num_bits); \
- gmp_randclear(rs); \
+#define bn_random(bn, num_bits) \
+ do { \
+ int bits = num_bits; \
+ mpz_set_ui(bn, 0); \
+ for (bits = num_bits; bits > 0; bits -= 32) { \
+ mpz_mul_2exp(bn, bn, 32); \
+ mpz_add_ui(bn, bn, av_get_random_seed()); \
+ } \
+ mpz_fdiv_r_2exp(bn, bn, num_bits); \
} while (0)
#elif CONFIG_GCRYPT
#define bn_new(bn) bn = gcry_mpi_new(1)
return ret;
}
-
-#ifdef TEST
-static int test_random_shared_secret(void)
-{
- FF_DH *peer1 = NULL, *peer2 = NULL;
- int ret;
- uint8_t pubkey1[128], pubkey2[128];
- uint8_t sharedkey1[128], sharedkey2[128];
-
- peer1 = ff_dh_init(1024);
- peer2 = ff_dh_init(1024);
- if (!peer1 || !peer2) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- if ((ret = ff_dh_generate_public_key(peer1)) < 0)
- goto fail;
- if ((ret = ff_dh_generate_public_key(peer2)) < 0)
- goto fail;
- if ((ret = ff_dh_write_public_key(peer1, pubkey1, sizeof(pubkey1))) < 0)
- goto fail;
- if ((ret = ff_dh_write_public_key(peer2, pubkey2, sizeof(pubkey2))) < 0)
- goto fail;
- if ((ret = ff_dh_compute_shared_secret_key(peer1, pubkey2, sizeof(pubkey2),
- sharedkey1, sizeof(sharedkey1))) < 0)
- goto fail;
- if ((ret = ff_dh_compute_shared_secret_key(peer2, pubkey1, sizeof(pubkey1),
- sharedkey2, sizeof(sharedkey2))) < 0)
- goto fail;
- if (memcmp(sharedkey1, sharedkey2, sizeof(sharedkey1))) {
- printf("Mismatched generated shared key\n");
- ret = AVERROR_INVALIDDATA;
- } else {
- printf("Generated shared key ok\n");
- }
-fail:
- ff_dh_free(peer1);
- ff_dh_free(peer2);
- return ret;
-}
-
-static const char *private_key =
- "976C18FCADC255B456564F74F3EEDA59D28AF6B744D743F2357BFD2404797EF896EF1A"
- "7C1CBEAAA3AB60AF3192D189CFF3F991C9CBBFD78119FCA2181384B94011943B6D6F28"
- "9E1B708E2D1A0C7771169293F03DA27E561F15F16F0AC9BC858C77A80FA98FD088A232"
- "19D08BE6F165DE0B02034B18705829FAD0ACB26A5B75EF";
-static const char *public_key =
- "F272ECF8362257C5D2C3CC2229CF9C0A03225BC109B1DBC76A68C394F256ACA3EF5F64"
- "FC270C26382BF315C19E97A76104A716FC998A651E8610A3AE6CF65D8FAE5D3F32EEA0"
- "0B32CB9609B494116A825D7142D17B88E3D20EDD98743DE29CF37A23A9F6A58B960591"
- "3157D5965FCB46DDA73A1F08DD897BAE88DFE6FC937CBA";
-static const uint8_t public_key_bin[] = {
- 0xf2, 0x72, 0xec, 0xf8, 0x36, 0x22, 0x57, 0xc5, 0xd2, 0xc3, 0xcc, 0x22,
- 0x29, 0xcf, 0x9c, 0x0a, 0x03, 0x22, 0x5b, 0xc1, 0x09, 0xb1, 0xdb, 0xc7,
- 0x6a, 0x68, 0xc3, 0x94, 0xf2, 0x56, 0xac, 0xa3, 0xef, 0x5f, 0x64, 0xfc,
- 0x27, 0x0c, 0x26, 0x38, 0x2b, 0xf3, 0x15, 0xc1, 0x9e, 0x97, 0xa7, 0x61,
- 0x04, 0xa7, 0x16, 0xfc, 0x99, 0x8a, 0x65, 0x1e, 0x86, 0x10, 0xa3, 0xae,
- 0x6c, 0xf6, 0x5d, 0x8f, 0xae, 0x5d, 0x3f, 0x32, 0xee, 0xa0, 0x0b, 0x32,
- 0xcb, 0x96, 0x09, 0xb4, 0x94, 0x11, 0x6a, 0x82, 0x5d, 0x71, 0x42, 0xd1,
- 0x7b, 0x88, 0xe3, 0xd2, 0x0e, 0xdd, 0x98, 0x74, 0x3d, 0xe2, 0x9c, 0xf3,
- 0x7a, 0x23, 0xa9, 0xf6, 0xa5, 0x8b, 0x96, 0x05, 0x91, 0x31, 0x57, 0xd5,
- 0x96, 0x5f, 0xcb, 0x46, 0xdd, 0xa7, 0x3a, 0x1f, 0x08, 0xdd, 0x89, 0x7b,
- 0xae, 0x88, 0xdf, 0xe6, 0xfc, 0x93, 0x7c, 0xba
-};
-static const uint8_t peer_public_key[] = {
- 0x58, 0x66, 0x05, 0x49, 0x94, 0x23, 0x2b, 0x66, 0x52, 0x13, 0xff, 0x46,
- 0xf2, 0xb3, 0x79, 0xa9, 0xee, 0xae, 0x1a, 0x13, 0xf0, 0x71, 0x52, 0xfb,
- 0x93, 0x4e, 0xee, 0x97, 0x05, 0x73, 0x50, 0x7d, 0xaf, 0x02, 0x07, 0x72,
- 0xac, 0xdc, 0xa3, 0x95, 0x78, 0xee, 0x9a, 0x19, 0x71, 0x7e, 0x99, 0x9f,
- 0x2a, 0xd4, 0xb3, 0xe2, 0x0c, 0x1d, 0x1a, 0x78, 0x4c, 0xde, 0xf1, 0xad,
- 0xb4, 0x60, 0xa8, 0x51, 0xac, 0x71, 0xec, 0x86, 0x70, 0xa2, 0x63, 0x36,
- 0x92, 0x7c, 0xe3, 0x87, 0xee, 0xe4, 0xf1, 0x62, 0x24, 0x74, 0xb4, 0x04,
- 0xfa, 0x5c, 0xdf, 0xba, 0xfa, 0xa3, 0xc2, 0xbb, 0x62, 0x27, 0xd0, 0xf4,
- 0xe4, 0x43, 0xda, 0x8a, 0x88, 0x69, 0x60, 0xe2, 0xdb, 0x75, 0x2a, 0x98,
- 0x9d, 0xb5, 0x50, 0xe3, 0x99, 0xda, 0xe0, 0xa6, 0x14, 0xc9, 0x80, 0x12,
- 0xf9, 0x3c, 0xac, 0x06, 0x02, 0x7a, 0xde, 0x74
-};
-static const uint8_t shared_secret[] = {
- 0xb2, 0xeb, 0xcb, 0x71, 0xf3, 0x61, 0xfb, 0x5b, 0x4e, 0x5c, 0x4c, 0xcf,
- 0x5c, 0x08, 0x5f, 0x96, 0x26, 0x77, 0x1d, 0x31, 0xf1, 0xe1, 0xf7, 0x4b,
- 0x92, 0xac, 0x82, 0x2a, 0x88, 0xc7, 0x83, 0xe1, 0xc7, 0xf3, 0xd3, 0x1a,
- 0x7d, 0xc8, 0x31, 0xe3, 0x97, 0xe4, 0xec, 0x31, 0x0e, 0x8f, 0x73, 0x1a,
- 0xe4, 0xf6, 0xd8, 0xc8, 0x94, 0xff, 0xa0, 0x03, 0x84, 0x03, 0x0f, 0xa5,
- 0x30, 0x5d, 0x67, 0xe0, 0x7a, 0x3b, 0x5f, 0xed, 0x4c, 0xf5, 0xbc, 0x18,
- 0xea, 0xd4, 0x77, 0xa9, 0x07, 0xb3, 0x54, 0x0b, 0x02, 0xd9, 0xc6, 0xb8,
- 0x66, 0x5e, 0xec, 0xa4, 0xcd, 0x47, 0xed, 0xc9, 0x38, 0xc6, 0x91, 0x08,
- 0xf3, 0x85, 0x9b, 0x69, 0x16, 0x78, 0x0d, 0xb7, 0x74, 0x51, 0xaa, 0x5b,
- 0x4d, 0x74, 0xe4, 0x29, 0x2e, 0x9e, 0x8e, 0xf7, 0xe5, 0x42, 0x83, 0xb0,
- 0x65, 0xb0, 0xce, 0xc6, 0xb2, 0x8f, 0x5b, 0xb0
-};
-
-static int test_ref_data(void)
-{
- FF_DH *dh;
- int ret = AVERROR(ENOMEM);
- uint8_t pubkey_test[128];
- uint8_t sharedkey_test[128];
-
- dh = ff_dh_init(1024);
- if (!dh)
- goto fail;
- bn_hex2bn(dh->priv_key, private_key, ret);
- if (!ret)
- goto fail;
- bn_hex2bn(dh->pub_key, public_key, ret);
- if (!ret)
- goto fail;
- if ((ret = ff_dh_write_public_key(dh, pubkey_test, sizeof(pubkey_test))) < 0)
- goto fail;
- if (memcmp(pubkey_test, public_key_bin, sizeof(pubkey_test))) {
- printf("Mismatched generated public key\n");
- ret = AVERROR_INVALIDDATA;
- goto fail;
- } else {
- printf("Generated public key ok\n");
- }
- if ((ret = ff_dh_compute_shared_secret_key(dh, peer_public_key, sizeof(peer_public_key),
- sharedkey_test, sizeof(sharedkey_test))) < 0)
- goto fail;
- if (memcmp(shared_secret, sharedkey_test, sizeof(sharedkey_test))) {
- printf("Mismatched generated shared key\n");
- ret = AVERROR_INVALIDDATA;
- } else {
- printf("Generated shared key ok\n");
- }
-fail:
- ff_dh_free(dh);
- return ret;
-}
-
-int main(void)
-{
- if (test_random_shared_secret() < 0)
- return 1;
- if (test_ref_data() < 0)
- return 1;
- return 0;
-}
-#endif
projects / ffmpeg / blobdiff