TeaSpeak/tomcrypt
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

RSA in CRT optimization parameters are empty

Browse Source
This commit is contained in:
Pascal Brand 2014-09-18 20:45:42 +02:00 committed by Steffen Jaeckel
parent 2bb3f0246f
commit a6e89d58d4
1 changed files with 3 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/pk/rsa/rsa_exptmod.c
View File

@ -100,16 +100,11 @@ int rsa_exptmod(const unsigned char *in, unsigned long inlen,
} }
#endif /* LTC_RSA_BLINDING */ #endif /* LTC_RSA_BLINDING */
if (key->dP == NULL) { if ((key->dP == NULL) || (mp_get_digit_count(key->dP) == 0)) {
/* /*
* In case CRT optimization parameters are provided, * In case CRT optimization parameters are not provided,
* the private key is directly used * the private key is directly used to exptmod it
*/ */
LTC_ARGCHK(key->dQ == NULL);
LTC_ARGCHK(key->qP == NULL);
LTC_ARGCHK(key->p == NULL);
LTC_ARGCHK(key->q == NULL);
/* exptmod it */
if ((err = mp_exptmod(tmp, key->d, key->N, tmp)) != CRYPT_OK) { goto error; } if ((err = mp_exptmod(tmp, key->d, key->N, tmp)) != CRYPT_OK) { goto error; }
} else { } else {
/* tmpa = tmp^dP mod p */ /* tmpa = tmp^dP mod p */