cscrypt/aes.h

   1 #if defined(WITH_SSL) || defined(WITH_LIBCRYPTO)
   2 #  include <openssl/aes.h>
   3 #else
   4 #ifndef HEADER_AES_H
   5 #define HEADER_AES_H
   6
   7 #define AES_ENCRYPT 1
   8 #define AES_DECRYPT 0
   9
  10 /* Because array size can't be a const in C, the following two are macros.
  11    Both sizes are in bytes. */
  12 #define AES_MAXNR 14
  13 #define AES_BLOCK_SIZE 16
  14
  15 # define GETU32(pt) (((uint32_t)(pt)[0] << 24) ^ ((uint32_t)(pt)[1] << 16) ^ ((uint32_t)(pt)[2] <<  8) ^ ((uint32_t)(pt)[3]))
  16 # define PUTU32(ct, st) { (ct)[0] = (uint8_t)((st) >> 24); (ct)[1] = (uint8_t)((st) >> 16); (ct)[2] = (uint8_t)((st) >>  8); (ct)[3] = (uint8_t)(st); }
  17
  18 #include <stdint.h>
  19
  20 #define MAXKC   (256/32)
  21 #define MAXKB   (256/8)
  22 #define MAXNR   14
  23
  24 /* This controls loop-unrolling in aes_core.c */
  25 #undef FULL_UNROLL
  26
  27 /* This should be a hidden type, but EVP requires that the size be known */
  28 struct aes_key_st
  29 {
  30         uint32_t rd_key[4 * (AES_MAXNR + 1)];
  31         int rounds;
  32 };
  33 typedef struct aes_key_st AES_KEY;
  34
  35 int AES_set_encrypt_key(const uint8_t *userKey, const int bits, AES_KEY *key);
  36 int AES_set_decrypt_key(const uint8_t *userKey, const int bits, AES_KEY *key);
  37
  38 void AES_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
  39 void AES_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
  40
  41 void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, const unsigned long length,
  42                                          const AES_KEY *key, uint8_t *ivec, const int enc);
  43 #endif /* !HEADER_AES_H */
  44
  45 #endif