X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fm_sigver.c;h=258fd91ced251015ae10365c2a86557bfb623228;hb=eeb1c3976cf4a1746367808e351c0ed7ce21808b;hp=4f9282d029a351957e0270af2b6f1acdfd686d36;hpb=6181f5e4046a2e1380bae1a9163e186a4d26df15;p=oweals%2Fopenssl.git

diff --git a/crypto/evp/m_sigver.c b/crypto/evp/m_sigver.c
index 4f9282d029..258fd91ced 100644
--- a/crypto/evp/m_sigver.c
+++ b/crypto/evp/m_sigver.c
@@ -1,6 +1,7 @@
 /* m_sigver.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2006.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
  */
 /* ====================================================================
  * Copyright (c) 2006,2007 The OpenSSL Project.  All rights reserved.
@@ -10,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -57,119 +58,163 @@
  */
 
 #include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
 #include <openssl/evp.h>
 #include <openssl/objects.h>
 #include <openssl/x509.h>
-#include "evp_locl.h"
+#include "internal/evp_int.h"
 
 static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
-			  const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
-			  int ver)
-	{
-	if (ctx->pctx == NULL)
-		ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
-	if (ctx->pctx == NULL)
-		return 0;
-	if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
-		return 0;
-	if (pctx)
-		*pctx = ctx->pctx;
-	if (ver)
-		{
-		if (ctx->pctx->pmeth->verifyctx_init)
-			{
-			int r;
-			r = ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx);
-			if (r <= 0)
-				return 0;
-			if (r == 2)
-				return 1;
-			}
-		else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
-			return 0;
-		}
-	else
-		{
-		if (ctx->pctx->pmeth->signctx_init)
-			{
-			int r;
-			r = ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx);
-			if (r <= 0)
-				return 0;
-			if (r == 2)
-				return 1;
-			}
-		if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
-			return 0;
-		}
-	if (!EVP_DigestInit_ex(ctx, type, e))
-		return 0;
-	return 1;
-	}
+                          const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
+                          int ver)
+{
+    if (ctx->pctx == NULL)
+        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) {
+            if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx) <= 0)
+                return 0;
+            ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX;
+        } else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
+            return 0;
+    } else {
+        if (ctx->pctx->pmeth->signctx_init) {
+            if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0)
+                return 0;
+            ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX;
+        } else if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
+            return 0;
+    }
+    if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
+        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;
+}
 
 int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
-			const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
-	{
-	return do_sigver_init(ctx, pctx, type, e, pkey, 0);
-	}
+                       const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+    return do_sigver_init(ctx, pctx, type, e, pkey, 0);
+}
 
 int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
-			const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
-	{
-	return do_sigver_init(ctx, pctx, type, e, pkey, 1);
-	}
+                         const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+    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 = 0, r = 0;
+    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) {
+        unsigned char md[EVP_MAX_MD_SIZE];
+        unsigned int mdlen = 0;
+        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 {
+            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)
+            return 0;
+    } else {
+        if (sctx) {
+            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;
+        }
+    }
+    return 1;
+}
 
-int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
-	{
-	int r;
-	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 (tmp_ctx.pctx->pmeth->signctx)
-			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 (!r)
-			return 0;
-		if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 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, const unsigned char *sig,
+                          size_t siglen)
+{
+    unsigned char md[EVP_MAX_MD_SIZE];
+    int r = 0;
+    unsigned int mdlen = 0;
+    int vctx = 0;
 
-int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, 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;
-	EVP_MD_CTX_init(&tmp_ctx);
-	if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
-		return -1;	
-	if (tmp_ctx.pctx->pmeth->verifyctx)
-		{
-		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 (!r)
-		return -1;
-	return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
-	}
+    if (ctx->pctx->pmeth->verifyctx)
+        vctx = 1;
+    else
+        vctx = 0;
+    if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE) {
+        if (vctx) {
+            r = ctx->pctx->pmeth->verifyctx(ctx->pctx, sig, siglen, ctx);
+        } else
+            r = EVP_DigestFinal_ex(ctx, md, &mdlen);
+    } else {
+        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);
+}