diff options
Diffstat (limited to 'rsa.c')
| -rw-r--r-- | rsa.c | 21 |
1 files changed, 7 insertions, 14 deletions
@@ -39,8 +39,7 @@ #ifdef DROPBEAR_RSA static void rsa_pad_em(dropbear_rsa_key * key, - const unsigned char * data, unsigned int len, - mp_int * rsa_em); + buffer *data_buf, mp_int * rsa_em); /* Load a public rsa key from a buffer, initialising the values. * The key will have the same format as buf_put_rsa_key. @@ -213,9 +212,7 @@ void buf_put_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) { #ifdef DROPBEAR_SIGNKEY_VERIFY /* Verify a signature in buf, made on data by the key given. * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ -int buf_rsa_verify(buffer * buf, dropbear_rsa_key *key, const unsigned char* data, - unsigned int len) { - +int buf_rsa_verify(buffer * buf, dropbear_rsa_key *key, buffer *data_buf) { unsigned int slen; DEF_MP_INT(rsa_s); DEF_MP_INT(rsa_mdash); @@ -247,7 +244,7 @@ int buf_rsa_verify(buffer * buf, dropbear_rsa_key *key, const unsigned char* dat } /* create the magic PKCS padded value */ - rsa_pad_em(key, data, len, &rsa_em); + rsa_pad_em(key, data_buf, &rsa_em); if (mp_exptmod(&rsa_s, key->e, key->n, &rsa_mdash) != MP_OKAY) { TRACE(("failed exptmod rsa_s")) @@ -270,9 +267,7 @@ out: /* Sign the data presented with key, writing the signature contents * to the buffer */ -void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, const unsigned char* data, - unsigned int len) { - +void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, buffer *data_buf) { unsigned int nsize, ssize; unsigned int i; DEF_MP_INT(rsa_s); @@ -285,7 +280,7 @@ void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, const unsigned char* d m_mp_init_multi(&rsa_s, &rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL); - rsa_pad_em(key, data, len, &rsa_tmp1); + rsa_pad_em(key, data_buf, &rsa_tmp1); /* the actual signing of the padded data */ @@ -377,8 +372,7 @@ void buf_put_rsa_sign(buffer* buf, dropbear_rsa_key *key, const unsigned char* d * rsa_em must be a pointer to an initialised mp_int. */ static void rsa_pad_em(dropbear_rsa_key * key, - const unsigned char * data, unsigned int len, - mp_int * rsa_em) { + buffer *data_buf, mp_int * rsa_em) { /* ASN1 designator (including the 0x00 preceding) */ const unsigned char rsa_asn1_magic[] = @@ -391,7 +385,6 @@ static void rsa_pad_em(dropbear_rsa_key * key, unsigned int nsize; dropbear_assert(key != NULL); - dropbear_assert(data != NULL); nsize = mp_unsigned_bin_size(key->n); rsa_EM = buf_new(nsize-1); @@ -408,7 +401,7 @@ static void rsa_pad_em(dropbear_rsa_key * key, /* The hash of the data */ sha1_init(&hs); - sha1_process(&hs, data, len); + sha1_process(&hs, data_buf->data, data_buf->len); sha1_done(&hs, buf_getwriteptr(rsa_EM, SHA1_HASH_SIZE)); buf_incrwritepos(rsa_EM, SHA1_HASH_SIZE); |