1 files changed, 1 insertions, 67 deletions

diff --git a/src/lib/libcrypto/dsa/dsa_vrf.c b/src/lib/libcrypto/dsa/dsa_vrf.c
index ff552208aa..03277f80fd 100644
--- a/src/lib/libcrypto/dsa/dsa_vrf.c
+++ b/src/lib/libcrypto/dsa/dsa_vrf.c
@@ -69,73 +69,7 @@
 int DSA_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig,
                   DSA *dsa)
         {
-        BN_CTX *ctx;
-        BIGNUM u1,u2,t1;
-        BN_MONT_CTX *mont=NULL;
-        int ret = -1;
-
-        if ((ctx=BN_CTX_new()) == NULL) goto err;
-        BN_init(&u1);
-        BN_init(&u2);
-        BN_init(&t1);
-
-        /* Calculate W = inv(S) mod Q
-         * save W in u2 */
-        if ((BN_mod_inverse(&u2,sig->s,dsa->q,ctx)) == NULL) goto err;
-
-        /* save M in u1 */
-        if (BN_bin2bn(dgst,dgst_len,&u1) == NULL) goto err;
-
-        /* u1 = M * w mod q */
-        if (!BN_mod_mul(&u1,&u1,&u2,dsa->q,ctx)) goto err;
-
-        /* u2 = r * w mod q */
-        if (!BN_mod_mul(&u2,sig->r,&u2,dsa->q,ctx)) goto err;
-
-        if ((dsa->method_mont_p == NULL) && (dsa->flags & DSA_FLAG_CACHE_MONT_P))
-                {
-                if ((dsa->method_mont_p=(char *)BN_MONT_CTX_new()) != NULL)
-                        if (!BN_MONT_CTX_set((BN_MONT_CTX *)dsa->method_mont_p,
-                                dsa->p,ctx)) goto err;
-                }
-        mont=(BN_MONT_CTX *)dsa->method_mont_p;
-
-#if 0
-        {
-        BIGNUM t2;
-
-        BN_init(&t2);
-        /* v = ( g^u1 * y^u2 mod p ) mod q */
-        /* let t1 = g ^ u1 mod p */
-        if (!BN_mod_exp_mont(&t1,dsa->g,&u1,dsa->p,ctx,mont)) goto err;
-        /* let t2 = y ^ u2 mod p */
-        if (!BN_mod_exp_mont(&t2,dsa->pub_key,&u2,dsa->p,ctx,mont)) goto err;
-        /* let u1 = t1 * t2 mod p */
-        if (!BN_mod_mul(&u1,&t1,&t2,dsa->p,ctx)) goto err_bn;
-        BN_free(&t2);
-        }
-        /* let u1 = u1 mod q */
-        if (!BN_mod(&u1,&u1,dsa->q,ctx)) goto err;
-#else
-        {
-        if (!BN_mod_exp2_mont(&t1,dsa->g,&u1,dsa->pub_key,&u2,dsa->p,ctx,mont))
-                goto err;
-        /* BN_copy(&u1,&t1); */
-        /* let u1 = u1 mod q */
-        if (!BN_mod(&u1,&t1,dsa->q,ctx)) goto err;
-        }
-#endif
-        /* V is now in u1.  If the signature is correct, it will be
-         * equal to R. */
-        ret=(BN_ucmp(&u1, sig->r) == 0);
-
-        err:
-        if (ret != 1) DSAerr(DSA_F_DSA_DO_VERIFY,ERR_R_BN_LIB);
-        if (ctx != NULL) BN_CTX_free(ctx);
-        BN_free(&u1);
-        BN_free(&u2);
-        BN_free(&t1);
-        return(ret);
+        return dsa->meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
         }
 
 /* data has already been hashed (probably with SHA or SHA-1). */