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/*
* crypto.h - public data structures and prototypes for the crypto library
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1994-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*
* $Id$
*/
#ifndef _CRYPTOHI_H_
#define _CRYPTOHI_H_
#include "blapi.h"
#include "mcom_db.h"
#include "seccomon.h"
#include "secrngt.h"
#include "secoidt.h"
#include "secdert.h"
#include "cryptoht.h"
#include "keyt.h"
#include "certt.h"
SEC_BEGIN_PROTOS
/****************************************/
/*
** DER encode/decode DSA signatures
*/
/* ANSI X9.57 defines DSA signatures as DER encoded data. Our DSA code (and
* most of the rest of the world) just generates 40 bytes of raw data. These
* functions convert between formats.
*/
extern SECStatus DSAU_EncodeDerSig(SECItem *dest, SECItem *src);
extern SECItem *DSAU_DecodeDerSig(SECItem *item);
/****************************************/
/*
** Signature creation operations
*/
/*
** Create a new signature context used for signing a data stream.
** "alg" the signature algorithm to use (e.g. SEC_OID_RSA_WITH_MD5)
** "privKey" the private key to use
*/
extern SGNContext *SGN_NewContext(SECOidTag alg, SECKEYPrivateKey *privKey);
/*
** Destroy a signature-context object
** "key" the object
** "freeit" if PR_TRUE then free the object as well as its sub-objects
*/
extern void SGN_DestroyContext(SGNContext *cx, PRBool freeit);
/*
** Reset the signing context "cx" to its initial state, preparing it for
** another stream of data.
*/
extern SECStatus SGN_Begin(SGNContext *cx);
/*
** Update the signing context with more data to sign.
** "cx" the context
** "input" the input data to sign
** "inputLen" the length of the input data
*/
extern SECStatus SGN_Update(SGNContext *cx, unsigned char *input,
unsigned int inputLen);
/*
** Finish the signature process. Use either k0 or k1 to sign the data
** stream that was input using SGN_Update. The resulting signature is
** formatted using PKCS#1 and then encrypted using RSA private or public
** encryption.
** "cx" the context
** "result" the final signature data (memory is allocated)
*/
extern SECStatus SGN_End(SGNContext *cx, SECItem *result);
/*
** Sign a single block of data using private key encryption and given
** signature/hash algorithm.
** "result" the final signature data (memory is allocated)
** "buf" the input data to sign
** "len" the amount of data to sign
** "pk" the private key to encrypt with
** "algid" the signature/hash algorithm to sign with
** (must be compatible with the key type).
*/
extern SECStatus SEC_SignData(SECItem *result, unsigned char *buf, int len,
SECKEYPrivateKey *pk, SECOidTag algid);
/*
** Sign a pre-digested block of data using private key encryption, encoding
** The given signature/hash algorithm.
** "result" the final signature data (memory is allocated)
** "digest" the digest to sign
** "pk" the private key to encrypt with
** "algtag" The algorithm tag to encode (need for RSA only)
*/
extern SECStatus SGN_Digest(SECKEYPrivateKey *privKey,
SECOidTag algtag, SECItem *result, SECItem *digest);
/*
** DER sign a single block of data using private key encryption and the
** MD5 hashing algorithm. This routine first computes a digital signature
** using SEC_SignData, then wraps it with an CERTSignedData and then der
** encodes the result.
** "arena" is the memory arena to use to allocate data from
** "result" the final der encoded data (memory is allocated)
** "buf" the input data to sign
** "len" the amount of data to sign
** "pk" the private key to encrypt with
*/
extern SECStatus SEC_DerSignData(PRArenaPool *arena, SECItem *result,
unsigned char *buf, int len,
SECKEYPrivateKey *pk, SECOidTag algid);
/*
** Destroy a signed-data object.
** "sd" the object
** "freeit" if PR_TRUE then free the object as well as its sub-objects
*/
extern void SEC_DestroySignedData(CERTSignedData *sd, PRBool freeit);
/****************************************/
/*
** Signature verification operations
*/
/*
** Create a signature verification context.
** "key" the public key to verify with
** "sig" the encrypted signature data
** "algid" specifies the signing algorithm to use. This must match
** the key type.
** "wincx" void pointer to the window context
*/
extern VFYContext *VFY_CreateContext(SECKEYPublicKey *key, SECItem *sig,
SECOidTag algid, void *wincx);
/*
** Destroy a verification-context object.
** "cx" the context to destroy
** "freeit" if PR_TRUE then free the object as well as its sub-objects
*/
extern void VFY_DestroyContext(VFYContext *cx, PRBool freeit);
extern SECStatus VFY_Begin(VFYContext *cx);
/*
** Update a verification context with more input data. The input data
** is fed to a secure hash function (depending on what was in the
** encrypted signature data).
** "cx" the context
** "input" the input data
** "inputLen" the amount of input data
*/
extern SECStatus VFY_Update(VFYContext *cx, unsigned char *input,
unsigned int inputLen);
/*
** Finish the verification process. The return value is a status which
** indicates success or failure. On success, the SECSuccess value is
** returned. Otherwise, SECFailure is returned and the error code found
** using PORT_GetError() indicates what failure occurred.
** "cx" the context
*/
extern SECStatus VFY_End(VFYContext *cx);
/*
** Verify the signature on a block of data for which we already have
** the digest. The signature data is an RSA private key encrypted
** block of data formatted according to PKCS#1.
** "dig" the digest
** "key" the public key to check the signature with
** "sig" the encrypted signature data
** "algid" specifies the signing algorithm to use. This must match
** the key type.
**/
extern SECStatus VFY_VerifyDigest(SECItem *dig, SECKEYPublicKey *key,
SECItem *sig, SECOidTag algid, void *wincx);
/*
** Verify the signature on a block of data. The signature data is an RSA
** private key encrypted block of data formatted according to PKCS#1.
** "buf" the input data
** "len" the length of the input data
** "key" the public key to check the signature with
** "sig" the encrypted signature data
** "algid" specifies the signing algorithm to use. This must match
** the key type.
*/
extern SECStatus VFY_VerifyData(unsigned char *buf, int len,
SECKEYPublicKey *key, SECItem *sig,
SECOidTag algid, void *wincx);
SEC_END_PROTOS
#endif /* _CRYPTOHI_H_ */
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