include/crypto/speck.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Common values for the Speck algorithm
   4  */
   5
   6 #ifndef _CRYPTO_SPECK_H
   7 #define _CRYPTO_SPECK_H
   8
   9 #include <linux/types.h>
  10
  11 /* Speck128 */
  12
  13 #define SPECK128_BLOCK_SIZE     16
  14
  15 #define SPECK128_128_KEY_SIZE   16
  16 #define SPECK128_128_NROUNDS    32
  17
  18 #define SPECK128_192_KEY_SIZE   24
  19 #define SPECK128_192_NROUNDS    33
  20
  21 #define SPECK128_256_KEY_SIZE   32
  22 #define SPECK128_256_NROUNDS    34
  23
  24 struct speck128_tfm_ctx {
  25         u64 round_keys[SPECK128_256_NROUNDS];
  26         int nrounds;
  27 };
  28
  29 void crypto_speck128_encrypt(const struct speck128_tfm_ctx *ctx,
  30                              u8 *out, const u8 *in);
  31
  32 void crypto_speck128_decrypt(const struct speck128_tfm_ctx *ctx,
  33                              u8 *out, const u8 *in);
  34
  35 int crypto_speck128_setkey(struct speck128_tfm_ctx *ctx, const u8 *key,
  36                            unsigned int keysize);
  37
  38 /* Speck64 */
  39
  40 #define SPECK64_BLOCK_SIZE      8
  41
  42 #define SPECK64_96_KEY_SIZE     12
  43 #define SPECK64_96_NROUNDS      26
  44
  45 #define SPECK64_128_KEY_SIZE    16
  46 #define SPECK64_128_NROUNDS     27
  47
  48 struct speck64_tfm_ctx {
  49         u32 round_keys[SPECK64_128_NROUNDS];
  50         int nrounds;
  51 };
  52
  53 void crypto_speck64_encrypt(const struct speck64_tfm_ctx *ctx,
  54                             u8 *out, const u8 *in);
  55
  56 void crypto_speck64_decrypt(const struct speck64_tfm_ctx *ctx,
  57                             u8 *out, const u8 *in);
  58
  59 int crypto_speck64_setkey(struct speck64_tfm_ctx *ctx, const u8 *key,
  60                           unsigned int keysize);
  61
  62 #endif /* _CRYPTO_SPECK_H */