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149 lines
9.3 KiB
149 lines
9.3 KiB
4 years ago
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/***************************************************************************/
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/* */
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/* Project: OpenSLP - OpenSource implementation of Service Location */
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/* Protocol */
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/* */
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/* File: slp_crypto.h */
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/* */
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/* Abstract: Primitive cryptographic functions to support DSA signature */
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/* of SHA1 digests. Current implementation is uses the */
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/* OpenSSL (http://www.openssl.org)) crypto library. */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Please submit patches to http://www.openslp.org */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Copyright (C) 2000 Caldera Systems, Inc */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or without */
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/* modification, are permitted provided that the following conditions are */
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/* met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the */
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/* distribution. */
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/* */
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/* Neither the name of Caldera Systems nor the names of its */
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/* contributors may be used to endorse or promote products derived */
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/* from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
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/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CALDERA */
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/* SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
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/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
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/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
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/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/***************************************************************************/
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#ifndef SLP_CRYPTO_H_INCLUDED
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#define SLP_CRYPTO_H_INCLUDED
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#include <openssl/dsa.h>
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#include <openssl/sha.h>
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/*=========================================================================*/
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typedef DSA SLPCryptoDSAKey;
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/*=========================================================================*/
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/*=========================================================================*/
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int SLPCryptoSHA1Digest(const unsigned char* data,
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int datalen,
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unsigned char* digest);
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/* Generate a SHA1 digest for the specified block data */
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/* */
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/* Parameters: data (IN) pointer to buffer that to be hashed */
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/* datalen (IN) size of the data buffer in bytes */
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/* digest (OUT) pointer to buffer of at least 20 bytes in */
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/* size where the digest will be copied */
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/* */
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/* Returns: zero on success. non-zero on failure */
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/*=========================================================================*/
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/*=========================================================================*/
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SLPCryptoDSAKey* SLPCryptoDSAKeyDup(SLPCryptoDSAKey* dsa);
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/* Duplicates the specified key */
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/* */
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/* Parameters: dsa (IN) the key to duplicate */
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/* */
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/* Returns: Pointer to the duplicated key. Caller is responsible for */
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/* SLPCryptoDSAKeyDestroy()ing the returned pointer */
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/*=========================================================================*/
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/*=========================================================================*/
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void SLPCryptoDSAKeyDestroy(SLPCryptoDSAKey* dsa);
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/* Destroy a key that was created by SLPCryptoDSAKeyCreate(). Care should */
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/* be taken to make sure all private keys are destroyed */
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/* */
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/* Parameters: dsa (IN) the key to destroy */
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/* */
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/* Returns: None */
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/*=========================================================================*/
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/*=========================================================================*/
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int SLPCryptoDSASignLen(SLPCryptoDSAKey* key);
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/* Determine the length of a signatures produced with specified key. */
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/* */
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/* Parameters: key (IN) the key that will be used for signing */
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/* */
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/* Returns: The length of signatures in bytes */
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/*=========================================================================*/
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/*=========================================================================*/
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int SLPCryptoDSASign(SLPCryptoDSAKey* key,
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const unsigned char* digest,
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int digestlen,
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unsigned char* signature,
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int* signaturelen);
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/* Sign the specified digest with the specified DSA key */
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/* */
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/* Parameters: key (IN) Signing (private) key */
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/* digest (IN) pointer to digest buffer */
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/* digestlen (IN) length of the digest buffer */
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/* signature (OUT) buffer that will hold the ASN.1 DER */
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/* encoded signature. */
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/* signaturelen (OUT) The length of the signature buffer */
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/* SLPCryptoDSASignLen(key) should be */
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/* called to determine how big signature */
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/* should be. */
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/* */
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/* Returns: zero on success. non-zero on failure */
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/*=========================================================================*/
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/*=========================================================================*/
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int SLPCryptoDSAVerify(SLPCryptoDSAKey* key,
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const unsigned char* digest,
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int digestlen,
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const unsigned char* signature,
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int signaturelen);
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/* Verify a DSA signature to ensure it matches the specified digest */
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/* */
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/* Parameters: key (IN) Verifying (public) key */
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/* (IN) pointer to the digest buffer */
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/* (IN) length of the digest buffer */
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/* (IN) the ASN.1 DER encoded signature */
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/* (IN) the length of the signature */
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/* */
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/* Returns: 1 if the signature is valid, 0 of it is not */
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/*=========================================================================*/
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#endif
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