-/* crypto/asn1/a_sign.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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 acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS 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 AUTHOR OR 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (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 <time.h>
+#include <sys/types.h>
-#include "cryptlib.h"
-
-#ifndef NO_SYS_TYPES_H
-# include <sys/types.h>
-#endif
+#include "internal/cryptlib.h"
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/objects.h>
#include <openssl/buffer.h>
+#include "internal/asn1_int.h"
+#include "internal/evp_int.h"
+
+#ifndef NO_ASN1_OLD
+
+int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2,
+ ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey,
+ const EVP_MD *type)
+{
+ EVP_MD_CTX *ctx = EVP_MD_CTX_new();
+ unsigned char *p, *buf_in = NULL, *buf_out = NULL;
+ int i, inl = 0, outl = 0;
+ size_t inll = 0, outll = 0;
+ X509_ALGOR *a;
+
+ if (ctx == NULL) {
+ ASN1err(ASN1_F_ASN1_SIGN, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ for (i = 0; i < 2; i++) {
+ if (i == 0)
+ a = algor1;
+ else
+ a = algor2;
+ if (a == NULL)
+ continue;
+ if (type->pkey_type == NID_dsaWithSHA1) {
+ /*
+ * special case: RFC 2459 tells us to omit 'parameters' with
+ * id-dsa-with-sha1
+ */
+ ASN1_TYPE_free(a->parameter);
+ a->parameter = NULL;
+ } else if ((a->parameter == NULL) ||
+ (a->parameter->type != V_ASN1_NULL)) {
+ ASN1_TYPE_free(a->parameter);
+ if ((a->parameter = ASN1_TYPE_new()) == NULL)
+ goto err;
+ a->parameter->type = V_ASN1_NULL;
+ }
+ ASN1_OBJECT_free(a->algorithm);
+ a->algorithm = OBJ_nid2obj(type->pkey_type);
+ if (a->algorithm == NULL) {
+ ASN1err(ASN1_F_ASN1_SIGN, ASN1_R_UNKNOWN_OBJECT_TYPE);
+ goto err;
+ }
+ if (a->algorithm->length == 0) {
+ ASN1err(ASN1_F_ASN1_SIGN,
+ ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
+ goto err;
+ }
+ }
+ inl = i2d(data, NULL);
+ if (inl <= 0) {
+ ASN1err(ASN1_F_ASN1_SIGN, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ inll = (size_t)inl;
+ buf_in = OPENSSL_malloc(inll);
+ outll = outl = EVP_PKEY_size(pkey);
+ buf_out = OPENSSL_malloc(outll);
+ if (buf_in == NULL || buf_out == NULL) {
+ outl = 0;
+ ASN1err(ASN1_F_ASN1_SIGN, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ p = buf_in;
+
+ i2d(data, &p);
+ if (!EVP_SignInit_ex(ctx, type, NULL)
+ || !EVP_SignUpdate(ctx, (unsigned char *)buf_in, inl)
+ || !EVP_SignFinal(ctx, (unsigned char *)buf_out,
+ (unsigned int *)&outl, pkey)) {
+ outl = 0;
+ ASN1err(ASN1_F_ASN1_SIGN, ERR_R_EVP_LIB);
+ goto err;
+ }
+ OPENSSL_free(signature->data);
+ signature->data = buf_out;
+ buf_out = NULL;
+ signature->length = outl;
+ /*
+ * In the interests of compatibility, I'll make sure that the bit string
+ * has a 'not-used bits' value of 0
+ */
+ signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+ signature->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ err:
+ EVP_MD_CTX_free(ctx);
+ OPENSSL_clear_free((char *)buf_in, inll);
+ OPENSSL_clear_free((char *)buf_out, outll);
+ return outl;
+}
+
+#endif
+
+int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1,
+ X509_ALGOR *algor2, ASN1_BIT_STRING *signature, void *asn,
+ EVP_PKEY *pkey, const EVP_MD *type)
+{
+ int rv;
+ EVP_MD_CTX *ctx = EVP_MD_CTX_new();
+
+ if (ctx == NULL) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ if (!EVP_DigestSignInit(ctx, NULL, type, NULL, pkey)) {
+ EVP_MD_CTX_free(ctx);
+ return 0;
+ }
+
+ rv = ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, ctx);
+
+ EVP_MD_CTX_free(ctx);
+ return rv;
+}
+
+int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+ X509_ALGOR *algor1, X509_ALGOR *algor2,
+ ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx)
+{
+ const EVP_MD *type;
+ EVP_PKEY *pkey;
+ unsigned char *buf_in = NULL, *buf_out = NULL;
+ size_t inl = 0, outl = 0, outll = 0;
+ int signid, paramtype, buf_len = 0;
+ int rv;
+
+ type = EVP_MD_CTX_md(ctx);
+ pkey = EVP_PKEY_CTX_get0_pkey(EVP_MD_CTX_pkey_ctx(ctx));
+
+ if (pkey == NULL) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED);
+ goto err;
+ }
+
+ if (pkey->ameth == NULL) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+ goto err;
+ }
+
+ if (pkey->ameth->item_sign) {
+ rv = pkey->ameth->item_sign(ctx, it, asn, algor1, algor2, signature);
+ if (rv == 1)
+ outl = signature->length;
+ /*-
+ * Return value meanings:
+ * <=0: error.
+ * 1: method does everything.
+ * 2: carry on as normal.
+ * 3: ASN1 method sets algorithm identifiers: just sign.
+ */
+ if (rv <= 0)
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB);
+ if (rv <= 1)
+ goto err;
+ } else {
+ rv = 2;
+ }
+
+ if (rv == 2) {
+ if (type == NULL) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED);
+ goto err;
+ }
+ if (!OBJ_find_sigid_by_algs(&signid,
+ EVP_MD_nid(type),
+ pkey->ameth->pkey_id)) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,
+ ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+ goto err;
+ }
+
+ if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL)
+ paramtype = V_ASN1_NULL;
+ else
+ paramtype = V_ASN1_UNDEF;
+
+ if (algor1)
+ X509_ALGOR_set0(algor1, OBJ_nid2obj(signid), paramtype, NULL);
+ if (algor2)
+ X509_ALGOR_set0(algor2, OBJ_nid2obj(signid), paramtype, NULL);
+
+ }
+
+ buf_len = ASN1_item_i2d(asn, &buf_in, it);
+ if (buf_len <= 0) {
+ outl = 0;
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ inl = buf_len;
+ outll = outl = EVP_PKEY_size(pkey);
+ buf_out = OPENSSL_malloc(outll);
+ if (buf_in == NULL || buf_out == NULL) {
+ outl = 0;
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
-int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2,
- ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey,
- const EVP_MD *type)
- {
- EVP_MD_CTX ctx;
- unsigned char *p,*buf_in=NULL,*buf_out=NULL;
- int i,inl=0,outl=0,outll=0;
- X509_ALGOR *a;
-
- for (i=0; i<2; i++)
- {
- if (i == 0)
- a=algor1;
- else
- a=algor2;
- if (a == NULL) continue;
- if ( (a->parameter == NULL) ||
- (a->parameter->type != V_ASN1_NULL))
- {
- ASN1_TYPE_free(a->parameter);
- if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
- a->parameter->type=V_ASN1_NULL;
- }
- ASN1_OBJECT_free(a->algorithm);
- a->algorithm=OBJ_nid2obj(type->pkey_type);
- if (a->algorithm == NULL)
- {
- ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
- goto err;
- }
- if (a->algorithm->length == 0)
- {
- ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
- goto err;
- }
- }
- inl=i2d(data,NULL);
- buf_in=(unsigned char *)Malloc((unsigned int)inl);
- outll=outl=EVP_PKEY_size(pkey);
- buf_out=(unsigned char *)Malloc((unsigned int)outl);
- if ((buf_in == NULL) || (buf_out == NULL))
- {
- outl=0;
- ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- p=buf_in;
-
- i2d(data,&p);
- EVP_SignInit(&ctx,type);
- EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
- if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
- (unsigned int *)&outl,pkey))
- {
- outl=0;
- ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB);
- goto err;
- }
- if (signature->data != NULL) Free(signature->data);
- signature->data=buf_out;
- buf_out=NULL;
- signature->length=outl;
- /* In the interests of compatibility, I'll make sure that
- * the bit string has a 'not-used bits' value of 0
- */
- signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
- signature->flags|=ASN1_STRING_FLAG_BITS_LEFT;
-err:
- memset(&ctx,0,sizeof(ctx));
- if (buf_in != NULL)
- { memset((char *)buf_in,0,(unsigned int)inl); Free(buf_in); }
- if (buf_out != NULL)
- { memset((char *)buf_out,0,outll); Free(buf_out); }
- return(outl);
- }
+ if (!EVP_DigestSign(ctx, buf_out, &outl, buf_in, inl)) {
+ outl = 0;
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB);
+ goto err;
+ }
+ OPENSSL_free(signature->data);
+ signature->data = buf_out;
+ buf_out = NULL;
+ signature->length = outl;
+ /*
+ * In the interests of compatibility, I'll make sure that the bit string
+ * has a 'not-used bits' value of 0
+ */
+ signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+ signature->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ err:
+ OPENSSL_clear_free((char *)buf_in, inl);
+ OPENSSL_clear_free((char *)buf_out, outll);
+ return outl;
+}
projects / openssl.git / blobdiff