diff options
Diffstat (limited to 'lib/libcrypto/dsa/dsa_ossl.c')
| -rw-r--r-- | lib/libcrypto/dsa/dsa_ossl.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/libcrypto/dsa/dsa_ossl.c b/lib/libcrypto/dsa/dsa_ossl.c index 37dd5fc9940..b9e7f3ea5c6 100644 --- a/lib/libcrypto/dsa/dsa_ossl.c +++ b/lib/libcrypto/dsa/dsa_ossl.c @@ -64,7 +64,6 @@ #include <openssl/dsa.h> #include <openssl/rand.h> #include <openssl/asn1.h> -#include <openssl/engine.h> static DSA_SIG *dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa); static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp); @@ -106,13 +105,15 @@ static DSA_SIG *dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa) int i,reason=ERR_R_BN_LIB; DSA_SIG *ret=NULL; + BN_init(&m); + BN_init(&xr); + if (!dsa->p || !dsa->q || !dsa->g) { reason=DSA_R_MISSING_PARAMETERS; goto err; } - BN_init(&m); - BN_init(&xr); + s=BN_new(); if (s == NULL) goto err; @@ -178,6 +179,9 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp) DSAerr(DSA_F_DSA_SIGN_SETUP,DSA_R_MISSING_PARAMETERS); return 0; } + + BN_init(&k); + if (ctx_in == NULL) { if ((ctx=BN_CTX_new()) == NULL) goto err; @@ -185,7 +189,6 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp) else ctx=ctx_in; - BN_init(&k); if ((r=BN_new()) == NULL) goto err; kinv=NULL; @@ -241,11 +244,12 @@ static int dsa_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig, return -1; } - if ((ctx=BN_CTX_new()) == NULL) goto err; BN_init(&u1); BN_init(&u2); BN_init(&t1); + if ((ctx=BN_CTX_new()) == NULL) goto err; + if (BN_is_zero(sig->r) || sig->r->neg || BN_ucmp(sig->r, dsa->q) >= 0) { ret = 0; |