X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fdsa%2Fdsa_vrf.c;h=674cb5fa5f5b9839932402ece6a47ded96b622ab;hb=f3b6ee30f4995d74f1008ffbe10e1b59caaffcaa;hp=a217f8631ce89d83c09efe4562b43e31cf413e7b;hpb=eda1f21f1af8b6f77327e7b37573af9c1ba73726;p=oweals%2Fopenssl.git

diff --git a/crypto/dsa/dsa_vrf.c b/crypto/dsa/dsa_vrf.c
index a217f8631c..674cb5fa5f 100644
--- a/crypto/dsa/dsa_vrf.c
+++ b/crypto/dsa/dsa_vrf.c
@@ -1,5 +1,5 @@
 /* crypto/dsa/dsa_vrf.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
@@ -56,97 +56,21 @@
  * [including the GNU Public Licence.]
  */
 
-/* Origional version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
+/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
 
-#include <stdio.h>
 #include "cryptlib.h"
-#include "bn.h"
-#include "dsa.h"
-#include "rand.h"
-#include "asn1.h"
-#include "asn1_mac.h"
+#include <openssl/dsa.h>
 
-/* data has already been hashed (probably with SHA or SHA-1). */
-/* returns
- *	 1: correct signature
- *	 0: incorrect signature
- *	-1: error
- */
-int DSA_verify(type,dgst,dgst_len,sigbuf,siglen, dsa)
-int type;
-unsigned char *dgst;
-int dgst_len;
-unsigned char *sigbuf;
-int siglen;
-DSA *dsa;
+int DSA_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig,
+		  DSA *dsa)
 	{
-	/* The next 3 are used by the M_ASN1 macros */
-	long length=siglen;
-	ASN1_CTX c;
-	unsigned char **pp= &sigbuf;
-	BN_CTX *ctx;
-	BIGNUM *r=NULL;
-	BIGNUM *t1=NULL,*t2=NULL;
-	BIGNUM *u1=NULL,*u2=NULL;
-	ASN1_INTEGER *bs=NULL;
-	int ret = -1;
-
-	ctx=BN_CTX_new();
-	if (ctx == NULL) goto err;
-
-	t1=BN_new();
-	t2=BN_new();
-	if (t1 == NULL || t2 == NULL) goto err;
-
-	M_ASN1_D2I_Init();
-	M_ASN1_D2I_start_sequence();
-        M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER);
-        if ((r=BN_bin2bn(bs->data,bs->length,NULL)) == NULL) goto err_bn;
-        M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER);
-        if ((u1=BN_bin2bn(bs->data,bs->length,NULL)) == NULL) goto err_bn;
-	if (!asn1_Finish(&c)) goto err;
-
-	/* Calculate W = inv(S) mod Q
-	 * save W in u2 */
-	if ((u2=BN_mod_inverse(u1,dsa->q,ctx)) == NULL) goto err_bn;
-
-	/* save M in u1 */
-	if (BN_bin2bn(dgst,dgst_len,u1) == NULL) goto err_bn;
-
-	/* u1 = M * w mod q */
-	if (!BN_mod_mul(u1,u1,u2,dsa->q,ctx)) goto err_bn;
-
-	/* u2 = r * w mod q */
-	if (!BN_mod_mul(u2,r,u2,dsa->q,ctx)) goto err_bn;
-
-	/* v = ( g^u1 * y^u2 mod p ) mod q */
-	/* let t1 = g ^ u1 mod p */
-	if (!BN_mod_exp(t1,dsa->g,u1,dsa->p,ctx)) goto err_bn;
-	/* let t2 = y ^ u2 mod p */
-	if (!BN_mod_exp(t2,dsa->pub_key,u2,dsa->p,ctx)) goto err_bn;
-	/* let u1 = t1 * t2 mod p */
-	if (!BN_mod_mul(u1,t1,t2,dsa->p,ctx)) goto err_bn;
-	/* let u1 = u1 mod q */
-	if (!BN_mod(u1,u1,dsa->q,ctx)) goto err_bn;
-	/* V is now in u1.  If the signature is correct, it will be
-	 * equal to R. */
-	ret=(BN_ucmp(u1, r) == 0);
-	if (0)
-		{
-err: /* ASN1 error */
-		DSAerr(DSA_F_DSA_VERIFY,c.error);
-		}
-	if (0)
+#ifdef OPENSSL_FIPS
+	if (FIPS_mode() && !(dsa->meth->flags & DSA_FLAG_FIPS_METHOD)
+			&& !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
 		{
-err_bn: /* BN error */
-		DSAerr(DSA_F_DSA_VERIFY,ERR_R_BN_LIB);
+		DSAerr(DSA_F_DSA_DO_VERIFY, DSA_R_NON_FIPS_DSA_METHOD);
+		return -1;
 		}
-	if (ctx != NULL) BN_CTX_free(ctx);
-	if (r != NULL) BN_free(r);
-	if (t1 != NULL) BN_free(t1);
-	if (t2 != NULL) BN_free(t2);
-	if (u1 != NULL) BN_free(u1);
-	if (u2 != NULL) BN_free(u2);
-	if (bs != NULL) ASN1_BIT_STRING_free(bs);
-	return(ret);
+#endif
+	return dsa->meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
 	}