X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fm_sigver.c;h=c02325cf6b6d2e0fb8ad2d5d0e04ccc85221fef4;hp=6ab71907ab673453e29716cd87103a06066b6c6b;hb=02f060d17e667a2805eb0c71266c35de9e7e3864;hpb=baecb96e8a7d109cfbf816038abea45d1d6c78e3

diff --git a/crypto/evp/m_sigver.c b/crypto/evp/m_sigver.c
index 6ab71907ab..c02325cf6b 100644
--- a/crypto/evp/m_sigver.c
+++ b/crypto/evp/m_sigver.c
@@ -1,170 +1,404 @@
-/* m_sigver.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2006.
- */
-/* ====================================================================
- * Copyright (c) 2006,2007 The OpenSSL Project.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    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
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
 #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 "crypto/evp.h"
+#include "internal/provider.h"
+#include "evp_local.h"
+
+#ifndef FIPS_MODE
+
+static int update(EVP_MD_CTX *ctx, const void *data, size_t datalen)
+{
+    EVPerr(EVP_F_UPDATE, EVP_R_ONLY_ONESHOT_SUPPORTED);
+    return 0;
+}
 
 static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
-			  const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
-			  int ver)
-	{
-	int r = 0;
-	if (ctx->pctx == NULL)
-		ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
-	if (ctx->pctx == NULL)
-		return 0;
-	if (ver)
-		{
-		if (ctx->pctx->pmeth->verifyctx_init)
-			{
-			r = ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx);
-			if (r <= 0)
-				return 0;
-			}
-		else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
-			return 0;
-		}
-	else
-		{
-		if (ctx->pctx->pmeth->signctx_init)
-			{
-			r = ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx);
-			if (r <= 0)
-				return 0;
-			}
-		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 ((r != 2) && !EVP_DigestInit_ex(ctx, type, e))
-		return 0;
-	return 1;
-	}
+                          const EVP_MD *type, const char *mdname,
+                          const char *props, ENGINE *e, EVP_PKEY *pkey,
+                          EVP_SIGNATURE *signature, int ver)
+{
+    EVP_PKEY_CTX *locpctx = NULL;
+    void *provkey = NULL;
+    int ret;
+
+    if (ctx->provctx != NULL) {
+        if (!ossl_assert(ctx->digest != NULL)) {
+            ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+            return 0;
+        }
+        if (ctx->digest->freectx != NULL)
+            ctx->digest->freectx(ctx->provctx);
+        ctx->provctx = NULL;
+    }
+
+    if (ctx->pctx == NULL) {
+        ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
+        if (ctx->pctx == NULL)
+            return 0;
+    } else if (pkey != NULL) {
+        if (!EVP_PKEY_up_ref(pkey))
+            return 0;
+        EVP_PKEY_free(ctx->pctx->pkey);
+        ctx->pctx->pkey = pkey;
+    }
+    locpctx = ctx->pctx;
+    evp_pkey_ctx_free_old_ops(locpctx);
+    if (locpctx->pkey == NULL)
+        goto legacy;
+
+    if (e != NULL || locpctx->engine != NULL)
+        goto legacy;
+
+    if (signature != NULL) {
+        if (!EVP_SIGNATURE_up_ref(signature))
+            goto err;
+    } else {
+        /*
+         * TODO(3.0): Check for legacy handling. Remove this once all all
+         * algorithms are moved to providers.
+         */
+        switch (locpctx->pkey->type) {
+        case NID_dsa:
+            break;
+        default:
+            goto legacy;
+        }
+        signature
+            = EVP_SIGNATURE_fetch(NULL, OBJ_nid2sn(locpctx->pkey->type), NULL);
+
+        if (signature == NULL) {
+            ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+            goto err;
+        }
+    }
+    locpctx->operation = ver ? EVP_PKEY_OP_VERIFYCTX
+                             : EVP_PKEY_OP_SIGNCTX;
+
+    locpctx->op.sig.signature = signature;
+
+    locpctx->op.sig.sigprovctx
+        = signature->newctx(ossl_provider_ctx(signature->prov));
+    if (locpctx->op.sig.sigprovctx == NULL) {
+        ERR_raise(ERR_LIB_EVP,  EVP_R_INITIALIZATION_ERROR);
+        goto err;
+    }
+    provkey =
+        evp_keymgmt_export_to_provider(locpctx->pkey, signature->keymgmt, 0);
+    if (provkey == NULL) {
+        ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+        goto err;
+    }
+
+    if (mdname == NULL) {
+        mdname = EVP_MD_name(type);
+        ctx->reqdigest = type;
+    } else {
+        /*
+         * This might be requested by a later call to EVP_MD_CTX_md(). In that
+         * case the "explicit fetch" rules apply for that function (as per
+         * man pages), i.e. the ref count is not updated so the EVP_MD should
+         * not be used beyound the lifetime of the EVP_MD_CTX.
+         */
+        ctx->reqdigest
+            = ctx->fetched_digest
+            = EVP_MD_fetch(
+                ossl_provider_library_context(EVP_SIGNATURE_provider(signature)),
+                mdname, props);
+    }
+
+    if (ver) {
+        if (signature->digest_verify_init == NULL) {
+            ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+            goto err;
+        }
+        ret = signature->digest_verify_init(locpctx->op.sig.sigprovctx, mdname,
+                                            props, provkey);
+    } else {
+        if (signature->digest_sign_init == NULL) {
+            ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+            goto err;
+        }
+        ret = signature->digest_sign_init(locpctx->op.sig.sigprovctx, mdname,
+                                          props, provkey);
+    }
+
+    return ret ? 1 : 0;
+ err:
+    evp_pkey_ctx_free_old_ops(locpctx);
+    locpctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return 0;
+
+ legacy:
+    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 (ctx->pctx->pmeth->digestverify != 0) {
+            ctx->pctx->operation = EVP_PKEY_OP_VERIFY;
+            ctx->update = update;
+        } 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 (ctx->pctx->pmeth->digestsign != 0) {
+            ctx->pctx->operation = EVP_PKEY_OP_SIGN;
+            ctx->update = update;
+        } 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;
+    /*
+     * This indicates the current algorithm requires
+     * special treatment before hashing the tbs-message.
+     */
+    if (ctx->pctx->pmeth->digest_custom != NULL)
+        return ctx->pctx->pmeth->digest_custom(ctx->pctx, ctx);
+
+    return 1;
+}
+
+int EVP_DigestSignInit_ex(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                          const char *mdname, const char *props, EVP_PKEY *pkey,
+                          EVP_SIGNATURE *signature)
+{
+    return do_sigver_init(ctx, pctx, NULL, mdname, props, NULL, pkey, signature,
+                          0);
+}
 
 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, NULL, NULL, e, pkey, NULL, 0);
+}
+
+int EVP_DigestVerifyInit_ex(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                            const char *mdname, const char *props,
+                            EVP_PKEY *pkey, EVP_SIGNATURE *signature)
+{
+    return do_sigver_init(ctx, pctx, NULL, mdname, props, NULL, pkey, signature,
+                          1);
+}
 
 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);
-	}
-
-
-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, 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);
-	}
+                         const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+    return do_sigver_init(ctx, pctx, type, NULL, NULL, e, pkey, NULL, 1);
+}
+#endif /* FIPS_MDOE */
+
+int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data, size_t dsize)
+{
+    EVP_PKEY_CTX *pctx = ctx->pctx;
+
+    if (pctx == NULL
+            || pctx->operation != EVP_PKEY_OP_SIGNCTX
+            || pctx->op.sig.sigprovctx == NULL
+            || pctx->op.sig.signature == NULL)
+        goto legacy;
+
+    return pctx->op.sig.signature->digest_sign_update(pctx->op.sig.sigprovctx,
+                                                      data, dsize);
+
+ legacy:
+    return EVP_DigestUpdate(ctx, data, dsize);
+}
+
+int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t dsize)
+{
+    EVP_PKEY_CTX *pctx = ctx->pctx;
+
+    if (pctx == NULL
+            || pctx->operation != EVP_PKEY_OP_VERIFYCTX
+            || pctx->op.sig.sigprovctx == NULL
+            || pctx->op.sig.signature == NULL)
+        goto legacy;
+
+    return pctx->op.sig.signature->digest_verify_update(pctx->op.sig.sigprovctx,
+                                                        data, dsize);
+
+ legacy:
+    return EVP_DigestUpdate(ctx, data, dsize);
+}
+
+#ifndef FIPS_MODE
+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 == NULL
+            || pctx->operation != EVP_PKEY_OP_SIGNCTX
+            || pctx->op.sig.sigprovctx == NULL
+            || pctx->op.sig.signature == NULL)
+        goto legacy;
+
+    return pctx->op.sig.signature->digest_sign_final(pctx->op.sig.sigprovctx,
+                                                     sigret, siglen, SIZE_MAX);
+
+ legacy:
+    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_new();
+            if (tmp_ctx == NULL)
+                return 0;
+            if (!EVP_MD_CTX_copy_ex(tmp_ctx, ctx)) {
+                EVP_MD_CTX_free(tmp_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_free(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_DigestSign(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen,
+                   const unsigned char *tbs, size_t tbslen)
+{
+    if (ctx->pctx->pmeth->digestsign != NULL)
+        return ctx->pctx->pmeth->digestsign(ctx, sigret, siglen, tbs, tbslen);
+    if (sigret != NULL && EVP_DigestSignUpdate(ctx, tbs, tbslen) <= 0)
+        return 0;
+    return EVP_DigestSignFinal(ctx, sigret, siglen);
+}
+
+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;
+    EVP_PKEY_CTX *pctx = ctx->pctx;
+
+    if (pctx == NULL
+            || pctx->operation != EVP_PKEY_OP_VERIFYCTX
+            || pctx->op.sig.sigprovctx == NULL
+            || pctx->op.sig.signature == NULL)
+        goto legacy;
+
+    return pctx->op.sig.signature->digest_verify_final(pctx->op.sig.sigprovctx,
+                                                       sig, siglen);
+
+ legacy:
+    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_new();
+        if (tmp_ctx == NULL)
+            return -1;
+        if (!EVP_MD_CTX_copy_ex(tmp_ctx, ctx)) {
+            EVP_MD_CTX_free(tmp_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_free(tmp_ctx);
+    }
+    if (vctx || !r)
+        return r;
+    return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
+}
+
+int EVP_DigestVerify(EVP_MD_CTX *ctx, const unsigned char *sigret,
+                     size_t siglen, const unsigned char *tbs, size_t tbslen)
+{
+    if (ctx->pctx->pmeth->digestverify != NULL)
+        return ctx->pctx->pmeth->digestverify(ctx, sigret, siglen, tbs, tbslen);
+    if (EVP_DigestVerifyUpdate(ctx, tbs, tbslen) <= 0)
+        return -1;
+    return EVP_DigestVerifyFinal(ctx, sigret, siglen);
+}
+#endif /* FIPS_MODE */