127 |
memcpy(sec_sign_key, session_key, 16); |
memcpy(sec_sign_key, session_key, 16); |
128 |
|
|
129 |
/* Generate RC4 keys */ |
/* Generate RC4 keys */ |
130 |
sec_hash_16(sec_decrypt_key, &session_key[16], client_key, |
sec_hash_16(sec_decrypt_key, &session_key[16], client_key, server_key); |
131 |
server_key); |
sec_hash_16(sec_encrypt_key, &session_key[32], client_key, server_key); |
|
sec_hash_16(sec_encrypt_key, &session_key[32], client_key, |
|
|
server_key); |
|
132 |
|
|
133 |
if (rc4_key_size == 1) |
if (rc4_key_size == 1) |
134 |
{ |
{ |
179 |
|
|
180 |
/* Generate a signature hash, using a combination of SHA1 and MD5 */ |
/* Generate a signature hash, using a combination of SHA1 and MD5 */ |
181 |
void |
void |
182 |
sec_sign(uint8 * signature, int siglen, uint8 * session_key, int keylen, |
sec_sign(uint8 * signature, int siglen, uint8 * session_key, int keylen, uint8 * data, int datalen) |
|
uint8 * data, int datalen) |
|
183 |
{ |
{ |
184 |
uint8 shasig[20]; |
uint8 shasig[20]; |
185 |
uint8 md5sig[16]; |
uint8 md5sig[16]; |
283 |
|
|
284 |
/* Perform an RSA public key encryption operation */ |
/* Perform an RSA public key encryption operation */ |
285 |
static void |
static void |
286 |
sec_rsa_encrypt(uint8 * out, uint8 * in, int len, |
sec_rsa_encrypt(uint8 * out, uint8 * in, int len, uint8 * modulus, uint8 * exponent) |
|
uint8 * modulus, uint8 * exponent) |
|
287 |
{ |
{ |
288 |
BN_CTX ctx; |
BN_CTX ctx; |
289 |
BIGNUM mod, exp, x, y; |
BIGNUM mod, exp, x, y; |
354 |
hexdump(s->p + 8, datalen); |
hexdump(s->p + 8, datalen); |
355 |
#endif |
#endif |
356 |
|
|
357 |
sec_sign(s->p, 8, sec_sign_key, rc4_key_len, s->p + 8, |
sec_sign(s->p, 8, sec_sign_key, rc4_key_len, s->p + 8, datalen); |
|
datalen); |
|
358 |
sec_encrypt(s->p + 8, datalen); |
sec_encrypt(s->p + 8, datalen); |
359 |
} |
} |
360 |
|
|
463 |
/* Parse a crypto information structure */ |
/* Parse a crypto information structure */ |
464 |
static BOOL |
static BOOL |
465 |
sec_parse_crypt_info(STREAM s, uint32 * rc4_key_size, |
sec_parse_crypt_info(STREAM s, uint32 * rc4_key_size, |
466 |
uint8 ** server_random, uint8 ** modulus, |
uint8 ** server_random, uint8 ** modulus, uint8 ** exponent) |
|
uint8 ** exponent) |
|
467 |
{ |
{ |
468 |
uint32 crypt_level, random_len, rsa_info_len; |
uint32 crypt_level, random_len, rsa_info_len; |
469 |
uint16 tag, length; |
uint16 tag, length; |
499 |
switch (tag) |
switch (tag) |
500 |
{ |
{ |
501 |
case SEC_TAG_PUBKEY: |
case SEC_TAG_PUBKEY: |
502 |
if (!sec_parse_public_key |
if (!sec_parse_public_key(s, modulus, exponent)) |
|
(s, modulus, exponent)) |
|
503 |
return False; |
return False; |
504 |
|
|
505 |
break; |
break; |
527 |
uint8 client_random[SEC_RANDOM_SIZE]; |
uint8 client_random[SEC_RANDOM_SIZE]; |
528 |
uint32 rc4_key_size; |
uint32 rc4_key_size; |
529 |
|
|
530 |
if (!sec_parse_crypt_info(s, &rc4_key_size, &server_random, |
if (!sec_parse_crypt_info(s, &rc4_key_size, &server_random, &modulus, &exponent)) |
|
&modulus, &exponent)) |
|
531 |
return; |
return; |
532 |
|
|
533 |
/* Generate a client random, and hence determine encryption keys */ |
/* Generate a client random, and hence determine encryption keys */ |
534 |
generate_random(client_random); |
generate_random(client_random); |
535 |
sec_rsa_encrypt(sec_crypted_random, client_random, |
sec_rsa_encrypt(sec_crypted_random, client_random, SEC_RANDOM_SIZE, modulus, exponent); |
|
SEC_RANDOM_SIZE, modulus, exponent); |
|
536 |
sec_generate_keys(client_random, server_random, rc4_key_size); |
sec_generate_keys(client_random, server_random, rc4_key_size); |
537 |
} |
} |
538 |
|
|