tom_crypto.c

   1 #include <tomcrypt.h>
   2
   3 #include "crypto_if.h"
   4
   5 static int tom_encrypt(void *pt, int ptlen, void *key, int keylen,
   6                         void *ct, int *ctlen)
   7 {
   8         symmentric_cbc cbc;
   9         unsigned char iv[16] = {0};
  10         int index, err;
  11
  12         if ((index = register_cipher(&aes_desc)) == -1) return -1;
  13         // if ((index = find_cipher("aes")) == -1) return -1;
  14         cipher = cipher_descriptor[index];
  15         if ((err = cbc_start(index, iv, key, keylen, 0, &cbc)) != CRYPT_OK)
  16                 return err;
  17         if ((err = cbc_encrypt(pt, ct, ptlen, &cbc)) != CRYPT_OK)
  18                 return err;
  19         if ((err = cbc_done(&cbc)) != CRYPT_OK)
  20                 return err;
  21         if ((err = unregister_cipher(&aes_desc)) != CRYPT_OK)
  22                 return err;
  23         return 0;
  24 }
  25
  26 static int tom_decrypt()
  27 {
  28         return 0;
  29 }
  30
  31 static int tom_hash()
  32 {
  33         return 0;
  34 }
  35
  36 static int tom_hmac()
  37 {
  38         return 0;
  39 }
  40
  41 struct crypto_interface tom_crypto_if = {
  42         .name           = "tomcrypt",
  43         .encrypt        = tom_encrypt,
  44         .decrypt        = tom_decrypt,
  45         .hash           = tom_hash,
  46         .hmac           = tom_hmac,
  47 };