/*
* cryptohi.h - public prototypes for the crypto library
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _CRYPTOHI_H_
#define _CRYPTOHI_H_
#include "blapit.h"
#include "seccomon.h"
#include "secoidt.h"
#include "secdert.h"
#include "cryptoht.h"
#include "keyt.h"
#include "certt.h"
SEC_BEGIN_PROTOS
/****************************************/
/*
** DER encode/decode (EC)DSA signatures
*/
/* ANSI X9.57 defines DSA signatures as DER encoded data. Our DSA1 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(const SECItem *item);
/*
* Unlike DSA1, raw DSA2 and ECDSA signatures do not have a fixed length.
* Rather they contain two integers r and s whose length depends
* on the size of q or the EC key used for signing.
*
* We can reuse the DSAU_EncodeDerSig interface to DER encode
* raw ECDSA signature keeping in mind that the length of r
* is the same as that of s and exactly half of src->len.
*
* For decoding, we need to pass the length of the desired
* raw signature (twice the key size) explicitly.
*/
extern SECStatus DSAU_EncodeDerSigWithLen(SECItem *dest, SECItem *src,
unsigned int len);
extern SECItem *DSAU_DecodeDerSigToLen(const SECItem *item, unsigned int len);
/****************************************/
/*
** Signature creation operations
*/
/*
** Create a new signature context used for signing a data stream.
** "alg" the signature algorithm to use (e.g. SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION)
** "privKey" the private key to use
*/
extern SGNContext *SGN_NewContext(SECOidTag alg, SECKEYPrivateKey *privKey);
/*
** Destroy a signature-context object
** "cx" 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, const 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,
const 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
** "privKey" 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(PLArenaPool *arena, SECItem *result,
const 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);
/*
** Get the signature algorithm tag number for the given key type and hash
** algorithm tag. Returns SEC_OID_UNKNOWN if key type and hash algorithm
** do not match or are not supported.
*/
extern SECOidTag SEC_GetSignatureAlgorithmOidTag(KeyType keyType,
SECOidTag hashAlgTag);
/****************************************/
/*
** Signature verification operations
*/
/*
** Create a signature verification context. This version is deprecated,
** This function is deprecated. Use VFY_CreateContextDirect or
** VFY_CreateContextWithAlgorithmID instead.
** "key" the public key to verify with
** "sig" the encrypted signature data if sig is NULL then
** VFY_EndWithSignature must be called with the correct signature at
** the end of the processing.
** "sigAlg" specifies the signing algorithm to use (including the
** hash algorthim). This must match the key type.
** "wincx" void pointer to the window context
*/
extern VFYContext *VFY_CreateContext(SECKEYPublicKey *key, SECItem *sig,
SECOidTag sigAlg, void *wincx);
/*
** Create a signature verification context.
** "key" the public key to verify with
** "sig" the encrypted signature data if sig is NULL then
** VFY_EndWithSignature must be called with the correct signature at
** the end of the processing.
** "pubkAlg" specifies the cryptographic signing algorithm to use (the
** raw algorithm without any hash specified. This must match the key
** type.
** "hashAlg" specifies the hashing algorithm used. If the key is an
** RSA key, and sig is not NULL, then hashAlg can be SEC_OID_UNKNOWN.
** the hash is selected from data in the sig.
** "hash" optional pointer to return the actual hash algorithm used.
** in practice this should always match the passed in hashAlg (the
** exception is the case where hashAlg is SEC_OID_UNKNOWN above).
** If this value is NULL no, hash oid is returned.
** "wincx" void pointer to the window context
*/
extern VFYContext *VFY_CreateContextDirect(const SECKEYPublicKey *key,
const SECItem *sig,
SECOidTag pubkAlg,
SECOidTag hashAlg,
SECOidTag *hash, void *wincx);
/*
** Create a signature verification context from a algorithm ID.
** "key" the public key to verify with
** "sig" the encrypted signature data if sig is NULL then
** VFY_EndWithSignature must be called with the correct signature at
** the end of the processing.
** "algid" specifies the signing algorithm and parameters to use.
** This must match the key type.
** "hash" optional pointer to return the oid of the actual hash used in
** the signature. If this value is NULL no, hash oid is returned.
** "wincx" void pointer to the window context
*/
extern VFYContext *VFY_CreateContextWithAlgorithmID(const SECKEYPublicKey *key,
const SECItem *sig,
const SECAlgorithmID *algid,
SECOidTag *hash,
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, const 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);
/*
** 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. If signature is
** supplied the verification uses this signature to verify, otherwise the
** signature passed in VFY_CreateContext() is used.
** VFY_EndWithSignature(cx,NULL); is identical to VFY_End(cx);.
** "cx" the context
** "sig" the encrypted signature data
*/
extern SECStatus VFY_EndWithSignature(VFYContext *cx, SECItem *sig);
/*
** 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.
** This function is deprecated. Use VFY_VerifyDigestDirect or
** VFY_VerifyDigestWithAlgorithmID instead.
** "dig" the digest
** "key" the public key to check the signature with
** "sig" the encrypted signature data
** "sigAlg" specifies the signing algorithm to use. This must match
** the key type.
** "wincx" void pointer to the window context
**/
extern SECStatus VFY_VerifyDigest(SECItem *dig, SECKEYPublicKey *key,
SECItem *sig, SECOidTag sigAlg, void *wincx);
/*
** 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
** "pubkAlg" specifies the cryptographic signing algorithm to use (the
** raw algorithm without any hash specified. This must match the key
** type.
** "hashAlg" specifies the hashing algorithm used.
** "wincx" void pointer to the window context
**/
extern SECStatus VFY_VerifyDigestDirect(const SECItem *dig,
const SECKEYPublicKey *key,
const SECItem *sig, SECOidTag pubkAlg,
SECOidTag hashAlg, void *wincx);
/*
** 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.
** "key" the public key to verify with
** "sig" the encrypted signature data if sig is NULL then
** VFY_EndWithSignature must be called with the correct signature at
** the end of the processing.
** "algid" specifies the signing algorithm and parameters to use.
** This must match the key type.
** "hash" oid of the actual hash used to create digest. If this value is
** not set to SEC_OID_UNKNOWN, it must match the hash of the signature.
** "wincx" void pointer to the window context
*/
extern SECStatus VFY_VerifyDigestWithAlgorithmID(const SECItem *dig,
const SECKEYPublicKey *key, const SECItem *sig,
const SECAlgorithmID *algid, SECOidTag hash,
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.
** This function is deprecated. Use VFY_VerifyDataDirect or
** VFY_VerifyDataWithAlgorithmID instead.
** "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
** "sigAlg" specifies the signing algorithm to use. This must match
** the key type.
** "wincx" void pointer to the window context
*/
extern SECStatus VFY_VerifyData(const unsigned char *buf, int len,
const SECKEYPublicKey *key, const SECItem *sig,
SECOidTag sigAlg, 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
** "pubkAlg" specifies the cryptographic signing algorithm to use (the
** raw algorithm without any hash specified. This must match the key
** type.
** "hashAlg" specifies the hashing algorithm used. If the key is an
** RSA key, and sig is not NULL, then hashAlg can be SEC_OID_UNKNOWN.
** the hash is selected from data in the sig.
** "hash" optional pointer to return the actual hash algorithm used.
** in practice this should always match the passed in hashAlg (the
** exception is the case where hashAlg is SEC_OID_UNKNOWN above).
** If this value is NULL no, hash oid is returned.
** "wincx" void pointer to the window context
*/
extern SECStatus VFY_VerifyDataDirect(const unsigned char *buf, int len,
const SECKEYPublicKey *key,
const SECItem *sig,
SECOidTag pubkAlg, SECOidTag hashAlg,
SECOidTag *hash, 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 and parameters to use.
** This must match the key type.
** "hash" optional pointer to return the oid of the actual hash used in
** the signature. If this value is NULL no, hash oid is returned.
** "wincx" void pointer to the window context
*/
extern SECStatus VFY_VerifyDataWithAlgorithmID(const unsigned char *buf,
int len, const SECKEYPublicKey *key,
const SECItem *sig,
const SECAlgorithmID *algid, SECOidTag *hash,
void *wincx);
SEC_END_PROTOS
#endif /* _CRYPTOHI_H_ */