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/*-
* Copyright (c) 2012 Alistair Crooks <agc@NetBSD.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
#ifndef RSA_H_
#define RSA_H_ 20120325
#include "bn.h"
#ifndef __BEGIN_DECLS
# if defined(__cplusplus)
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
# else
# define __BEGIN_DECLS
# define __END_DECLS
# endif
#endif
__BEGIN_DECLS
typedef struct rsa_pubkey_t {
BIGNUM *n; /* RSA public modulus n */
BIGNUM *e; /* RSA public encryption exponent e */
} rsa_pubkey_t;
typedef struct mpi_rsa_t {
int f1; /* openssl pad */
long f2; /* openssl version */
const void *f3; /* openssl method */
void *f4; /* openssl engine */
BIGNUM *n;
BIGNUM *e;
BIGNUM *d;
BIGNUM *p;
BIGNUM *q;
BIGNUM *dmp1;
BIGNUM *dmq1;
BIGNUM *iqmp;
} mpi_rsa_t;
#define RSA mpi_rsa_t
typedef struct dsa_pubkey_t {
BIGNUM *p; /* DSA public modulus n */
BIGNUM *q; /* DSA public encryption exponent e */
BIGNUM *g;
BIGNUM *y;
} dsa_pubkey_t;
typedef struct mpi_dsa_t {
BIGNUM *p;
BIGNUM *q;
BIGNUM *g;
BIGNUM *y;
BIGNUM *x;
BIGNUM *pub_key;
BIGNUM *priv_key;
} mpi_dsa_t;
#define DSA mpi_dsa_t
typedef struct rsasig_t {
BIGNUM *sig; /* mpi which is actual signature */
} rsasig_t;
typedef struct dsasig_t {
BIGNUM *r; /* mpi which is actual signature */
BIGNUM *s; /* mpi which is actual signature */
} dsasig_t;
#define DSA_SIG dsasig_t
/* misc defs */
#define RSA_NO_PADDING 3
#define SIGNETBSD_ID_SIZE 8
#define SIGNETBSD_NAME_SIZE 128
#define RSA_PUBKEY_ALG 1
#define DSA_PUBKEY_ALG 17
/* the public part of the key */
typedef struct pubkey_t {
uint32_t version; /* key version - usually 4 */
uint8_t id[SIGNETBSD_ID_SIZE]; /* binary id */
char name[SIGNETBSD_NAME_SIZE]; /* name of identity - not necessary, but looks better */
int64_t birthtime; /* time of creation of key */
int64_t expiry; /* expiration time of the key */
uint32_t validity; /* validity in days */
uint32_t alg; /* pubkey algorithm - rsa/dss etc */
rsa_pubkey_t rsa; /* specific RSA keys */
dsa_pubkey_t dsa; /* specific DSA keys */
} pubkey_t;
/* signature details (for a specific file) */
typedef struct signature_t {
uint32_t version; /* signature version number */
uint32_t type; /* signature type value */
int64_t birthtime; /* creation time of the signature */
int64_t expiry; /* expiration time of the signature */
uint8_t id[SIGNETBSD_ID_SIZE]; /* binary id */
uint32_t key_alg; /* public key algorithm number */
uint32_t hash_alg; /* hashing algorithm number */
rsasig_t rsa; /* RSA signature */
dsasig_t dsa; /* DSA signature */
size_t v4_hashlen; /* length of hashed info */
uint8_t *v4_hashed; /* hashed info */
uint8_t hash2[2]; /* high 2 bytes of hashed value - for quick test */
pubkey_t *signer; /* pubkey of signer */
} signature_t;
unsigned dsa_verify(const signature_t */*sig*/, const dsa_pubkey_t */*pubdsa*/, const uint8_t */*calc*/, size_t /*hashlen*/);
RSA *RSA_new(void);
int RSA_size(const RSA */*rsa*/);
void RSA_free(RSA */*rsa*/);
int RSA_check_key(RSA */*rsa*/);
RSA *RSA_generate_key(int /*num*/, unsigned long /*e*/, void (*callback)(int,int,void *), void */*cb_arg*/);
int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding);
int RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding);
int RSA_private_encrypt(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding);
int RSA_public_decrypt(int flen, const uint8_t *from, uint8_t *to, RSA *rsa, int padding);
DSA *DSA_new(void);
int DSA_size(const DSA */*rsa*/);
void DSA_free(DSA */*dsa*/);
DSA_SIG *DSA_SIG_new(void);
void DSA_SIG_free(DSA_SIG */*sig*/);
int DSA_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig, DSA *dsa);
DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
__END_DECLS
#endif
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