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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 */