--- /dev/null
+/* crypto/asn1/a_sign.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * 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.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2003 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
+ * openssl-core@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).
+ *
+ */
+
+#include <stdio.h>
+#include <time.h>
+
+#include "cryptlib.h"
+
+#ifndef NO_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#include <openssl/bn.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/objects.h>
+#include <openssl/buffer.h>
+#include "asn1_locl.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;
+ unsigned char *p,*buf_in=NULL,*buf_out=NULL;
+ int i,inl=0,outl=0,outll=0;
+ X509_ALGOR *a;
+
+ EVP_MD_CTX_init(&ctx);
+ 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);
+ buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl);
+ outll=outl=EVP_PKEY_size(pkey);
+ buf_out=(unsigned char *)OPENSSL_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);
+ 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;
+ }
+ if (signature->data != NULL) 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_cleanup(&ctx);
+ if (buf_in != NULL)
+ { OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); }
+ if (buf_out != NULL)
+ { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); }
+ 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)
+ {
+ EVP_MD_CTX ctx;
+ EVP_MD_CTX_init(&ctx);
+ if (!EVP_DigestSignInit(&ctx, NULL, type, NULL, pkey))
+ {
+ EVP_MD_CTX_cleanup(&ctx);
+ return 0;
+ }
+ return ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, &ctx);
+ }
+
+
+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;
+ int rv;
+
+ type = EVP_MD_CTX_md(ctx);
+ pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+
+ if (!type || !pkey)
+ {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED);
+ return 0;
+ }
+
+ 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->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE)
+ {
+ if (!pkey->ameth ||
+ !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);
+ return 0;
+ }
+ }
+ else
+ signid = type->pkey_type;
+
+ 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);
+
+ }
+
+ inl=ASN1_item_i2d(asn,&buf_in, it);
+ outll=outl=EVP_PKEY_size(pkey);
+ buf_out=OPENSSL_malloc((unsigned int)outl);
+ if ((buf_in == NULL) || (buf_out == NULL))
+ {
+ outl=0;
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ if (!EVP_DigestSignUpdate(ctx, buf_in, inl)
+ || !EVP_DigestSignFinal(ctx, buf_out, &outl))
+ {
+ outl=0;
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,ERR_R_EVP_LIB);
+ goto err;
+ }
+ if (signature->data != NULL) 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_cleanup(ctx);
+ if (buf_in != NULL)
+ { OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); }
+ if (buf_out != NULL)
+ { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); }
+ return(outl);
+ }
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