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/* rsa-compat.h
*
* The RSA publickey algorithm, RSAREF compatible interface.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 Niels Mller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#ifndef NETTLE_RSA_COMPAT_H_INCLUDED
#define NETTLE_RSA_COMPAT_H_INCLUDED
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#include "rsa.h"
/* 256 octets or 2048 bits */
#define MAX_RSA_MODULUS_LEN 256
typedef struct
{
unsigned bits;
uint8_t modulus[MAX_RSA_MODULUS_LEN];
uint8_t exponent[MAX_RSA_MODULUS_LEN];
} R_RSA_PUBLIC_KEY;
typedef struct
{
unsigned bits;
uint8_t modulus[MAX_RSA_MODULUS_LEN];
uint8_t publicExponent[MAX_RSA_MODULUS_LEN];
uint8_t exponent[MAX_RSA_MODULUS_LEN];
uint8_t prime[2][MAX_RSA_MODULUS_LEN];
uint8_t primeExponent[2][MAX_RSA_MODULUS_LEN];
uint8_t coefficient[MAX_RSA_MODULUS_LEN];
} R_RSA_PRIVATE_KEY;
/* Only MD5 is supported for now */
typedef struct
{
struct md5_ctx hash;
} R_SIGNATURE_CTX;
/* Digest algorithms */
/* DA_MD2 not implemented */
enum { DA_MD5 = 1 };
/* Return values */
enum {
RE_SUCCESS = 0,
RE_CONTENT_ENCODING, /* encryptedContent has RFC 1421 encoding error */
RE_DATA, /* other party's private value out of range */
RE_DIGEST_ALGORITHM, /* message-digest algorithm is invalid */
RE_ENCODING, /* encoded block has RFC 1421 encoding error */
RE_ENCRYPTION_ALGORITHM, /* encryption algorithm is invalid */
RE_KEY, /* recovered data encryption key cannot decrypt */
RE_KEY_ENCODING, /* encrypted key has RFC 1421 encoding error */
RE_LEN, /* signatureLen out of range */
RE_MODULUS_LEN, /* modulus length invalid */
RE_NEED_RANDOM, /* random structure is not seeded */
RE_PRIVATE_KEY, /* private key cannot encrypt message digest, */
RE_PUBLIC_KEY, /* publicKey cannot decrypt signature */
RE_SIGNATURE, /* signature is incorrect */
RE_SIGNATURE_ENCODING, /* encodedSignature has RFC 1421 encoding error */
};
int
R_SignInit(R_SIGNATURE_CTX *ctx,
int digestAlgorithm);
int
R_SignUpdate(R_SIGNATURE_CTX *ctx,
const uint8_t *data,
/* Length is an unsigned char according to rsaref.txt,
* but that must be a typo. */
unsigned length);
int
R_SignFinal(R_SIGNATURE_CTX *ctx,
uint8_t *signature,
unsigned *length,
R_RSA_PRIVATE_KEY *key);
int
R_VerifyInit(R_SIGNATURE_CTX *ctx,
int digestAlgorithm);
int
R_VerifyUpdate(R_SIGNATURE_CTX *ctx,
const uint8_t *data,
/* Length is an unsigned char according to rsaref.txt,
* but that must be a typo. */
unsigned length);
int
R_VerifyFinal(R_SIGNATURE_CTX *ctx,
uint8_t *signature,
unsigned length,
R_RSA_PUBLIC_KEY *key);