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- /* 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.] */
-
- #include <openssl/asn1.h>
- #include <openssl/digest.h>
- #include <openssl/err.h>
- #include <openssl/evp.h>
- #include <openssl/mem.h>
- #include <openssl/obj.h>
- #include <openssl/x509.h>
-
- #include "../evp/internal.h"
-
-
- 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)
- {
- EVP_PKEY *pkey;
- unsigned char *buf_in=NULL,*buf_out=NULL;
- size_t inl=0,outl=0,outll=0;
-
- pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
-
- /* Write out the requested copies of the AlgorithmIdentifier. */
- if (algor1 && !EVP_DigestSignAlgorithm(ctx, algor1))
- {
- goto err;
- }
- if (algor2 && !EVP_DigestSignAlgorithm(ctx, algor2))
- {
- goto err;
- }
-
- 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;
- OPENSSL_PUT_ERROR(X509, 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;
- OPENSSL_PUT_ERROR(X509, 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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