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rsa_exptmod(): verify that p and q are valid before going the CRT path

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This commit is contained in:
Steffen Jaeckel 2017-06-27 19:01:56 +02:00
parent f5b8cc9dae
commit 0a6af8d333
1 changed files with 5 additions and 3 deletions
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8
src/pk/rsa/rsa_exptmod.c
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@ -97,9 +97,11 @@ int rsa_exptmod(const unsigned char *in, unsigned long inlen,
} }
#endif /* LTC_RSA_BLINDING */ #endif /* LTC_RSA_BLINDING */
has_crt_parameters = (key->dP != NULL) && (mp_get_digit_count(key->dP) != 0) && has_crt_parameters = (key->p != NULL) && (mp_get_digit_count(key->p) != 0) &&
(key->dQ != NULL) && (mp_get_digit_count(key->dQ) != 0) && (key->q != NULL) && (mp_get_digit_count(key->q) != 0) &&
(key->qP != NULL) && (mp_get_digit_count(key->qP) != 0); (key->dP != NULL) && (mp_get_digit_count(key->dP) != 0) &&
(key->dQ != NULL) && (mp_get_digit_count(key->dQ) != 0) &&
(key->qP != NULL) && (mp_get_digit_count(key->qP) != 0);
if (!has_crt_parameters) { if (!has_crt_parameters) {
/* /*