1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef ASM_X86_CAMELLIA_H
3 #define ASM_X86_CAMELLIA_H
4
5 #include <linux/kernel.h>
6 #include <linux/crypto.h>
7
8 #define CAMELLIA_MIN_KEY_SIZE 16
9 #define CAMELLIA_MAX_KEY_SIZE 32
10 #define CAMELLIA_BLOCK_SIZE 16
11 #define CAMELLIA_TABLE_BYTE_LEN 272
12 #define CAMELLIA_PARALLEL_BLOCKS 2
13
14 struct camellia_ctx {
15 u64 key_table[CAMELLIA_TABLE_BYTE_LEN / sizeof(u64)];
16 u32 key_length;
17 };
18
19 struct camellia_lrw_ctx {
20 struct lrw_table_ctx lrw_table;
21 struct camellia_ctx camellia_ctx;
22 };
23
24 struct camellia_xts_ctx {
25 struct camellia_ctx tweak_ctx;
26 struct camellia_ctx crypt_ctx;
27 };
28
29 extern int __camellia_setkey(struct camellia_ctx *cctx,
30 const unsigned char *key,
31 unsigned int key_len, u32 *flags);
32
33 extern int lrw_camellia_setkey(struct crypto_tfm *tfm, const u8 *key,
34 unsigned int keylen);
35 extern void lrw_camellia_exit_tfm(struct crypto_tfm *tfm);
36
37 extern int xts_camellia_setkey(struct crypto_tfm *tfm, const u8 *key,
38 unsigned int keylen);
39
40 /* regular block cipher functions */
41 asmlinkage void __camellia_enc_blk(struct camellia_ctx *ctx, u8 *dst,
42 const u8 *src, bool xor);
43 asmlinkage void camellia_dec_blk(struct camellia_ctx *ctx, u8 *dst,
44 const u8 *src);
45
46 /* 2-way parallel cipher functions */
47 asmlinkage void __camellia_enc_blk_2way(struct camellia_ctx *ctx, u8 *dst,
48 const u8 *src, bool xor);
49 asmlinkage void camellia_dec_blk_2way(struct camellia_ctx *ctx, u8 *dst,
50 const u8 *src);
51
52 /* 16-way parallel cipher functions (avx/aes-ni) */
53 asmlinkage void camellia_ecb_enc_16way(struct camellia_ctx *ctx, u8 *dst,
54 const u8 *src);
55 asmlinkage void camellia_ecb_dec_16way(struct camellia_ctx *ctx, u8 *dst,
56 const u8 *src);
57
58 asmlinkage void camellia_cbc_dec_16way(struct camellia_ctx *ctx, u8 *dst,
59 const u8 *src);
60 asmlinkage void camellia_ctr_16way(struct camellia_ctx *ctx, u8 *dst,
61 const u8 *src, le128 *iv);
62
63 asmlinkage void camellia_xts_enc_16way(struct camellia_ctx *ctx, u8 *dst,
64 const u8 *src, le128 *iv);
65 asmlinkage void camellia_xts_dec_16way(struct camellia_ctx *ctx, u8 *dst,
66 const u8 *src, le128 *iv);
67
camellia_enc_blk(struct camellia_ctx * ctx,u8 * dst,const u8 * src)68 static inline void camellia_enc_blk(struct camellia_ctx *ctx, u8 *dst,
69 const u8 *src)
70 {
71 __camellia_enc_blk(ctx, dst, src, false);
72 }
73
camellia_enc_blk_xor(struct camellia_ctx * ctx,u8 * dst,const u8 * src)74 static inline void camellia_enc_blk_xor(struct camellia_ctx *ctx, u8 *dst,
75 const u8 *src)
76 {
77 __camellia_enc_blk(ctx, dst, src, true);
78 }
79
camellia_enc_blk_2way(struct camellia_ctx * ctx,u8 * dst,const u8 * src)80 static inline void camellia_enc_blk_2way(struct camellia_ctx *ctx, u8 *dst,
81 const u8 *src)
82 {
83 __camellia_enc_blk_2way(ctx, dst, src, false);
84 }
85
camellia_enc_blk_xor_2way(struct camellia_ctx * ctx,u8 * dst,const u8 * src)86 static inline void camellia_enc_blk_xor_2way(struct camellia_ctx *ctx, u8 *dst,
87 const u8 *src)
88 {
89 __camellia_enc_blk_2way(ctx, dst, src, true);
90 }
91
92 /* glue helpers */
93 extern void camellia_decrypt_cbc_2way(void *ctx, u128 *dst, const u128 *src);
94 extern void camellia_crypt_ctr(void *ctx, u128 *dst, const u128 *src,
95 le128 *iv);
96 extern void camellia_crypt_ctr_2way(void *ctx, u128 *dst, const u128 *src,
97 le128 *iv);
98
99 extern void camellia_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv);
100 extern void camellia_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv);
101
102 #endif /* ASM_X86_CAMELLIA_H */
103