tomcrypt_cipher.h

这是一个用来加解密的算法库

        block_length, 
   /** default number of rounds */
        default_rounds;
   /** Setup the cipher 
      @param key         The input symmetric key
      @param keylen      The length of the input key (octets)
      @param num_rounds  The requested number of rounds (0==default)
      @param skey        [out] The destination of the scheduled key
      @return CRYPT_OK if successful
   */
   int  (*setup)(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
   /** Encrypt a block
      @param pt      The plaintext
      @param ct      [out] The ciphertext
      @param skey    The scheduled key
   */
   void (*ecb_encrypt)(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
   /** Decrypt a block
      @param ct      The ciphertext
      @param pt      [out] The plaintext
      @param skey    The scheduled key
   */
   void (*ecb_decrypt)(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
   /** Test the block cipher
       @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled
   */
   int (*test)(void);
   /** Determine a key size
       @param keysize    [in/out] The size of the key desired and the suggested size
       @return CRYPT_OK if successful
   */
   int  (*keysize)(int *keysize);
} cipher_descriptor[];

#ifdef BLOWFISH
int blowfish_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void blowfish_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void blowfish_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int blowfish_test(void);
int blowfish_keysize(int *keysize);
extern const struct ltc_cipher_descriptor blowfish_desc;
#endif

#ifdef RC5
int rc5_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void rc5_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void rc5_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int rc5_test(void);
int rc5_keysize(int *keysize);
extern const struct ltc_cipher_descriptor rc5_desc;
#endif

#ifdef RC6
int rc6_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void rc6_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void rc6_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int rc6_test(void);
int rc6_keysize(int *keysize);
extern const struct ltc_cipher_descriptor rc6_desc;
#endif

#ifdef RC2
int rc2_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void rc2_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void rc2_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int rc2_test(void);
int rc2_keysize(int *keysize);
extern const struct ltc_cipher_descriptor rc2_desc;
#endif

#ifdef SAFERP
int saferp_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void saferp_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void saferp_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int saferp_test(void);
int saferp_keysize(int *keysize);
extern const struct ltc_cipher_descriptor saferp_desc;
#endif

#ifdef SAFER
int safer_k64_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
int safer_sk64_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
int safer_k128_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
int safer_sk128_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void safer_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *key);
void safer_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *key);
int safer_k64_test(void);
int safer_sk64_test(void);
int safer_sk128_test(void);
int safer_64_keysize(int *keysize);
int safer_128_keysize(int *keysize);
extern const struct ltc_cipher_descriptor safer_k64_desc, safer_k128_desc, safer_sk64_desc, safer_sk128_desc;
#endif

#ifdef RIJNDAEL

/* make aes an alias */
#define aes_setup           rijndael_setup
#define aes_ecb_encrypt     rijndael_ecb_encrypt
#define aes_ecb_decrypt     rijndael_ecb_decrypt
#define aes_test            rijndael_test
#define aes_keysize         rijndael_keysize

#define aes_enc_setup           rijndael_enc_setup
#define aes_enc_ecb_encrypt     rijndael_enc_ecb_encrypt
#define aes_enc_keysize         rijndael_enc_keysize

int rijndael_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void rijndael_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void rijndael_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int rijndael_test(void);
int rijndael_keysize(int *keysize);
int rijndael_enc_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void rijndael_enc_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
int rijndael_enc_keysize(int *keysize);
extern const struct ltc_cipher_descriptor rijndael_desc, aes_desc;
extern const struct ltc_cipher_descriptor rijndael_enc_desc, aes_enc_desc;
#endif

#ifdef XTEA
int xtea_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void xtea_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void xtea_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int xtea_test(void);
int xtea_keysize(int *keysize);
extern const struct ltc_cipher_descriptor xtea_desc;
#endif

#ifdef TWOFISH
int twofish_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void twofish_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void twofish_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int twofish_test(void);
int twofish_keysize(int *keysize);
extern const struct ltc_cipher_descriptor twofish_desc;
#endif

#ifdef DES
int des_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void des_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void des_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int des_test(void);
int des_keysize(int *keysize);
int des3_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void des3_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void des3_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int des3_test(void);
int des3_keysize(int *keysize);
extern const struct ltc_cipher_descriptor des_desc, des3_desc;
#endif

#ifdef CAST5
int cast5_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void cast5_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void cast5_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int cast5_test(void);
int cast5_keysize(int *keysize);
extern const struct ltc_cipher_descriptor cast5_desc;
#endif

#ifdef NOEKEON
int noekeon_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void noekeon_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void noekeon_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int noekeon_test(void);
int noekeon_keysize(int *keysize);
extern const struct ltc_cipher_descriptor noekeon_desc;
#endif

#ifdef SKIPJACK
int skipjack_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void skipjack_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void skipjack_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int skipjack_test(void);
int skipjack_keysize(int *keysize);
extern const struct ltc_cipher_descriptor skipjack_desc;
#endif

#ifdef KHAZAD
int khazad_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void khazad_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void khazad_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int khazad_test(void);
int khazad_keysize(int *keysize);
extern const struct ltc_cipher_descriptor khazad_desc;
#endif

#ifdef ANUBIS
int anubis_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey);
void anubis_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey);
void anubis_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey);
int anubis_test(void);
int anubis_keysize(int *keysize);
extern const struct ltc_cipher_descriptor anubis_desc;
#endif

#ifdef ECB
int ecb_start(int cipher, const unsigned char *key, 
              int keylen, int num_rounds, symmetric_ECB *ecb);
int ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_ECB *ecb);
int ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_ECB *ecb);
#endif

#ifdef CFB
int cfb_start(int cipher, const unsigned char *IV, const unsigned char *key, 
              int keylen, int num_rounds, symmetric_CFB *cfb);
int cfb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_CFB *cfb);
int cfb_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_CFB *cfb);
int cfb_getiv(unsigned char *IV, unsigned long *len, symmetric_CFB *cfb);
int cfb_setiv(const unsigned char *IV, unsigned long len, symmetric_CFB *cfb);
#endif

#ifdef OFB
int ofb_start(int cipher, const unsigned char *IV, const unsigned char *key, 
              int keylen, int num_rounds, symmetric_OFB *ofb);
int ofb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_OFB *ofb);
int ofb_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_OFB *ofb);
int ofb_getiv(unsigned char *IV, unsigned long *len, symmetric_OFB *ofb);
int ofb_setiv(const unsigned char *IV, unsigned long len, symmetric_OFB *ofb);
#endif

#ifdef CBC
int cbc_start(int cipher, const unsigned char *IV, const unsigned char *key,
               int keylen, int num_rounds, symmetric_CBC *cbc);
int cbc_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_CBC *cbc);
int cbc_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_CBC *cbc);
int cbc_getiv(unsigned char *IV, unsigned long *len, symmetric_CBC *cbc);
int cbc_setiv(const unsigned char *IV, unsigned long len, symmetric_CBC *cbc);
#endif

#ifdef CTR
int ctr_start(int cipher, const unsigned char *IV, const unsigned char *key, 
              int keylen, int num_rounds, symmetric_CTR *ctr);
int ctr_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_CTR *ctr);
int ctr_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_CTR *ctr);
int ctr_getiv(unsigned char *IV, unsigned long *len, symmetric_CTR *ctr);
int ctr_setiv(const unsigned char *IV, unsigned long len, symmetric_CTR *ctr);
#endif
    
int find_cipher(const char *name);
int find_cipher_any(const char *name, int blocklen, int keylen);
int find_cipher_id(unsigned char ID);

int register_cipher(const struct ltc_cipher_descriptor *cipher);
int unregister_cipher(const struct ltc_cipher_descriptor *cipher);

int cipher_is_valid(int idx);