diff options
| author | Ulf Möller <ulf@openssl.org> | 2001-03-28 04:56:58 +0000 |
|---|---|---|
| committer | Ulf Möller <ulf@openssl.org> | 2001-03-28 04:56:58 +0000 |
| commit | 6a5b52efa0da422c517897433b78efc3658c13bc (patch) | |
| tree | 2c3f1dfe8000f46547f6f3ea3f84a99540f33d78 /crypto/rsa/rsa_eay.c | |
| parent | 6d864b7030059c1971e59d852002d7529855be1a (diff) | |
check CRT
Diffstat (limited to 'crypto/rsa/rsa_eay.c')
| -rw-r--r-- | crypto/rsa/rsa_eay.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/crypto/rsa/rsa_eay.c b/crypto/rsa/rsa_eay.c index 41b968d3bf..ba530b8f00 100644 --- a/crypto/rsa/rsa_eay.c +++ b/crypto/rsa/rsa_eay.c @@ -453,7 +453,7 @@ err: static int RSA_eay_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) { const RSA_METHOD *meth; - BIGNUM r1,m1; + BIGNUM r1,m1,vrfy; int ret=0; BN_CTX *ctx; @@ -461,6 +461,7 @@ static int RSA_eay_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) if ((ctx=BN_CTX_new()) == NULL) goto err; BN_init(&m1); BN_init(&r1); + BN_init(&vrfy); if (rsa->flags & RSA_FLAG_CACHE_PRIVATE) { @@ -541,10 +542,19 @@ static int RSA_eay_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) if (!BN_mul(&r1,r0,rsa->q,ctx)) goto err; if (!BN_add(r0,&r1,&m1)) goto err; + if (rsa->e && rsa->n) + { + if (!rsa->meth->bn_mod_exp(&vrfy,r0,rsa->e,rsa->n,ctx,NULL)) goto err; + if (BN_cmp(I, &vrfy) != 0) + { + if (!rsa->meth->bn_mod_exp(r0,I,rsa->d,rsa->n,ctx,NULL)) goto err; + } + } ret=1; err: BN_clear_free(&m1); BN_clear_free(&r1); + BN_clear_free(&vrfy); BN_CTX_free(ctx); return(ret); } |