X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fm_sigver.c;h=bc5e132c59b0b0e8d04c50c5f38c0f97d1eb4d41;hb=4aac102f75b517bdb56b1bcfd0a856052d559f6e;hp=8fdfe61b3f478071194f906ee5894431864bfa81;hpb=74633553a912519a6e73a9d830132e58f420a6c9;p=oweals%2Fopenssl.git

diff --git a/crypto/evp/m_sigver.c b/crypto/evp/m_sigver.c
index 8fdfe61b3f..bc5e132c59 100644
--- a/crypto/evp/m_sigver.c
+++ b/crypto/evp/m_sigver.c
@@ -1,5 +1,5 @@
 /* m_sigver.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 2006.
  */
 /* ====================================================================
@@ -71,6 +71,24 @@ static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
 		ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
 	if (ctx->pctx == NULL)
 		return 0;
+
+	if (!(ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM))
+		{
+
+		if (type == NULL)
+			{
+			int def_nid;
+			if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
+				type = EVP_get_digestbynid(def_nid);
+			}
+
+		if (type == NULL)
+			{
+			EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST);
+			return 0;
+			}
+		}
+
 	if (ver)
 		{
 		if (ctx->pctx->pmeth->verifyctx_init)
@@ -97,6 +115,8 @@ static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
 		return 0;
 	if (pctx)
 		*pctx = ctx->pctx;
+	if (ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
+		return 1;
 	if (!EVP_DigestInit_ex(ctx, type, e))
 		return 0;
 	return 1;
@@ -114,28 +134,55 @@ int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
 	return do_sigver_init(ctx, pctx, type, e, pkey, 1);
 	}
 
-
 int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
 	{
 	int sctx, r = 0;
-	if (ctx->pctx->pmeth->signctx)
+	EVP_PKEY_CTX *pctx = ctx->pctx;
+	if (pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
+		{
+		if (!sigret)
+			return pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+		if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE)
+			r = pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+		else
+			{
+			EVP_PKEY_CTX *dctx = EVP_PKEY_CTX_dup(ctx->pctx);
+			if (!dctx)
+				return 0;
+			r = dctx->pmeth->signctx(dctx, sigret, siglen, ctx);
+			EVP_PKEY_CTX_free(dctx);
+			}
+		return r;
+		}
+	if (pctx->pmeth->signctx)
 		sctx = 1;
 	else
 		sctx = 0;
 	if (sigret)
 		{
-		MS_STATIC EVP_MD_CTX tmp_ctx;
 		unsigned char md[EVP_MAX_MD_SIZE];
 		unsigned int mdlen;
-		EVP_MD_CTX_init(&tmp_ctx);
-		if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
-		     	return 0;
-		if (sctx)
-			r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
-					sigret, siglen, &tmp_ctx);
+		if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE)
+			{
+			if (sctx)
+				r = ctx->pctx->pmeth->signctx(ctx->pctx,
+						sigret, siglen, ctx);
+			else
+				r = EVP_DigestFinal_ex(ctx, md, &mdlen);
+			}
 		else
-			r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
-		EVP_MD_CTX_cleanup(&tmp_ctx);
+			{
+			EVP_MD_CTX tmp_ctx;
+			EVP_MD_CTX_init(&tmp_ctx);
+			if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
+				return 0;
+			if (sctx)
+				r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
+						sigret, siglen, &tmp_ctx);
+			else
+				r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
+			EVP_MD_CTX_cleanup(&tmp_ctx);
+			}
 		if (sctx || !r)
 			return r;
 		if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
@@ -145,39 +192,56 @@ int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
 		{
 		if (sctx)
 			{
-			if (ctx->pctx->pmeth->signctx(ctx->pctx, 
-						sigret, siglen, ctx) <= 0)
+			if (pctx->pmeth->signctx(pctx, sigret, siglen, ctx) <= 0)
+				return 0;
+			}
+		else
+			{
+			int s = EVP_MD_size(ctx->digest);
+			if (s < 0 || EVP_PKEY_sign(pctx, sigret, siglen, NULL, s) <= 0)
 				return 0;
 			}
-		else if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL,
-						EVP_MD_size(ctx->digest)) <= 0)
-			return 0;
 		}
 	return 1;
 	}
 
-int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen)
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig,
+								size_t siglen)
 	{
-	MS_STATIC EVP_MD_CTX tmp_ctx;
 	unsigned char md[EVP_MAX_MD_SIZE];
 	int r;
 	unsigned int mdlen;
 	int vctx;
-	if (ctx->pctx->pmeth->signctx)
+
+	if (ctx->pctx->pmeth->verifyctx)
 		vctx = 1;
 	else
 		vctx = 0;
-	EVP_MD_CTX_init(&tmp_ctx);
-	if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
-		return -1;	
-	if (vctx)
+	if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE)
 		{
-		r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx,
-					sig, siglen, &tmp_ctx);
+		if (vctx)
+			{
+			r = ctx->pctx->pmeth->verifyctx(ctx->pctx,
+						sig, siglen, ctx);
+			}
+		else
+			r = EVP_DigestFinal_ex(ctx, md, &mdlen);
 		}
 	else
-		r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
-	EVP_MD_CTX_cleanup(&tmp_ctx);
+		{
+		EVP_MD_CTX tmp_ctx;
+		EVP_MD_CTX_init(&tmp_ctx);
+		if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
+			return -1;
+		if (vctx)
+			{
+			r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx,
+						sig, siglen, &tmp_ctx);
+			}
+		else
+			r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
+		EVP_MD_CTX_cleanup(&tmp_ctx);
+		}
 	if (vctx || !r)
 		return r;
 	return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);