rsaref.h

很有意思得加密解密算法

/* RSAREF.H - header file for RSAREF cryptographic toolkit
 */

/* Copyright (C) 1991-2 RSA Laboratories, a division of RSA Data
   Security, Inc. All rights reserved.
 */

/* RSA key lengths.
 */
#ifndef RSAREF_H
#define RESDEF_H
#define MIN_RSA_MODULUS_BITS 1
#define MAX_RSA_MODULUS_BITS 1024
#define MAX_RSA_MODULUS_LEN ((MAX_RSA_MODULUS_BITS + 7) / 8)
#define MAX_RSA_PRIME_BITS ((MAX_RSA_MODULUS_BITS + 1) / 2)
#define MAX_RSA_PRIME_LEN ((MAX_RSA_PRIME_BITS + 7) / 8)

/* Error codes.
 */
#define RE_CONTENT_ENCODING 0x0400
#define RE_DATA 0x0401
#define RE_DIGEST_ALGORITHM 0x0402
#define RE_ENCODING 0x0403
#define RE_KEY 0x0404
#define RE_KEY_ENCODING 0x0405
#define RE_LEN 0x0406
#define RE_MODULUS_LEN 0x0407
#define RE_NEED_RANDOM 0x0408
#define RE_PRIVATE_KEY 0x0409
#define RE_PUBLIC_KEY 0x040a
#define RE_SIGNATURE 0x040b
#define RE_SIGNATURE_ENCODING 0x040c

/* RSA public and private key.
 */
typedef struct {
  unsigned int bits;                           /* length in bits of modulus */
  unsigned char modulus[MAX_RSA_MODULUS_LEN];                    /* modulus */
  unsigned char exponent[MAX_RSA_MODULUS_LEN];           /* public exponent */
} R_RSA_PUBLIC_KEY;

typedef struct {
  unsigned int bits;                           /* length in bits of modulus */
  unsigned char modulus[MAX_RSA_MODULUS_LEN];                    /* modulus */
  unsigned char publicExponent[MAX_RSA_MODULUS_LEN];     /* public exponent */
  unsigned char exponent[MAX_RSA_MODULUS_LEN];          /* private exponent */
  unsigned char prime[2][MAX_RSA_PRIME_LEN];               /* prime factors */
  unsigned char primeExponent[2][MAX_RSA_PRIME_LEN];   /* exponents for CRT */
  unsigned char coefficient[MAX_RSA_PRIME_LEN];          /* CRT coefficient */
} R_RSA_PRIVATE_KEY;

/* RSA prototype key.
 */
typedef struct {
  unsigned int bits;                           /* length in bits of modulus */
  int useFermat4;                        /* public exponent (1 = F4, 0 = 3) */
} R_RSA_PROTO_KEY;

/* Key-pair generation.
 */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
int R_GeneratePEMKeys(R_RSA_PUBLIC_KEY *, R_RSA_PRIVATE_KEY *,
                      R_RSA_PROTO_KEY *);
#ifdef __cplusplus
};
#endif /* __cplusplus */

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
int R_GenerateStrongKeys(R_RSA_PUBLIC_KEY *, R_RSA_PRIVATE_KEY *,
                         R_RSA_PROTO_KEY *);
#ifdef __cplusplus
};
#endif /* __cplusplus */

/* Routines supplied by the implementor.
 */
void R_memset(POINTER, int, unsigned int);
void R_memcpy(POINTER, POINTER, unsigned int);
int R_memcmp(POINTER, POINTER, unsigned int);

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
int RSAPublicBlock(unsigned char *output, unsigned int *outputLen,
                   unsigned char *input,  unsigned int inputLen,
                   R_RSA_PUBLIC_KEY *publicKey);
#ifdef __cplusplus
};
#endif /* __cplusplus */

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
int RSAPrivateBlock(unsigned char *output, unsigned int *outputLen,
                    unsigned char *input,  unsigned int inputLen,
                    R_RSA_PRIVATE_KEY *privateKey);
#ifdef __cplusplus
};
#endif /* __cplusplus */

#endif