arch/x86/crypto/aes_glue.c

   1 /*
   2  * Glue Code for the asm optimized version of the AES Cipher Algorithm
   3  *
   4  */
   5
   6 #include <crypto/aes.h>
   7
   8 asmlinkage void aes_enc_blk(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);
   9 asmlinkage void aes_dec_blk(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);
  10
  11 void crypto_aes_encrypt_x86(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
  12 {
  13         aes_enc_blk(ctx, dst, src);
  14 }
  15 EXPORT_SYMBOL_GPL(crypto_aes_encrypt_x86);
  16
  17 void crypto_aes_decrypt_x86(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
  18 {
  19         aes_dec_blk(ctx, dst, src);
  20 }
  21 EXPORT_SYMBOL_GPL(crypto_aes_decrypt_x86);
  22
  23 static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
  24 {
  25         aes_enc_blk(crypto_tfm_ctx(tfm), dst, src);
  26 }
  27
  28 static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
  29 {
  30         aes_dec_blk(crypto_tfm_ctx(tfm), dst, src);
  31 }
  32
  33 static struct crypto_alg aes_alg = {
  34         .cra_name               = "aes",
  35         .cra_driver_name        = "aes-asm",
  36         .cra_priority           = 200,
  37         .cra_flags              = CRYPTO_ALG_TYPE_CIPHER,
  38         .cra_blocksize          = AES_BLOCK_SIZE,
  39         .cra_ctxsize            = sizeof(struct crypto_aes_ctx),
  40         .cra_module             = THIS_MODULE,
  41         .cra_list               = LIST_HEAD_INIT(aes_alg.cra_list),
  42         .cra_u  = {
  43                 .cipher = {
  44                         .cia_min_keysize        = AES_MIN_KEY_SIZE,
  45                         .cia_max_keysize        = AES_MAX_KEY_SIZE,
  46                         .cia_setkey             = crypto_aes_set_key,
  47                         .cia_encrypt            = aes_encrypt,
  48                         .cia_decrypt            = aes_decrypt
  49                 }
  50         }
  51 };
  52
  53 static int __init aes_init(void)
  54 {
  55         return crypto_register_alg(&aes_alg);
  56 }
  57
  58 static void __exit aes_fini(void)
  59 {
  60         crypto_unregister_alg(&aes_alg);
  61 }
  62
  63 module_init(aes_init);
  64 module_exit(aes_fini);
  65
  66 MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, asm optimized");
  67 MODULE_LICENSE("GPL");
  68 MODULE_ALIAS("aes");
  69 MODULE_ALIAS("aes-asm");