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