1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _CRYPTO_CAST5_H
3 #define _CRYPTO_CAST5_H
4
5 #include <linux/types.h>
6 #include <linux/crypto.h>
7 #include <crypto/cast_common.h>
8
9 #define CAST5_BLOCK_SIZE 8
10 #define CAST5_MIN_KEY_SIZE 5
11 #define CAST5_MAX_KEY_SIZE 16
12
13 struct cast5_ctx {
14 u32 Km[16];
15 u8 Kr[16];
16 int rr; /* rr ? rounds = 12 : rounds = 16; (rfc 2144) */
17 };
18
19 int cast5_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen);
20
21 void __cast5_encrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
22 void __cast5_decrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
23
24 #endif
25
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