Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
16d004a2 EP |
2 | /* |
3 | * DES & Triple DES EDE Cipher Algorithms. | |
4 | */ | |
5 | ||
6 | #ifndef __CRYPTO_DES_H | |
7 | #define __CRYPTO_DES_H | |
8 | ||
04007b0e | 9 | #include <linux/types.h> |
d7198ce4 | 10 | |
16d004a2 EP |
11 | #define DES_KEY_SIZE 8 |
12 | #define DES_EXPKEY_WORDS 32 | |
13 | #define DES_BLOCK_SIZE 8 | |
14 | ||
15 | #define DES3_EDE_KEY_SIZE (3 * DES_KEY_SIZE) | |
16 | #define DES3_EDE_EXPKEY_WORDS (3 * DES_EXPKEY_WORDS) | |
17 | #define DES3_EDE_BLOCK_SIZE DES_BLOCK_SIZE | |
18 | ||
04007b0e AB |
19 | struct des_ctx { |
20 | u32 expkey[DES_EXPKEY_WORDS]; | |
21 | }; | |
22 | ||
23 | struct des3_ede_ctx { | |
24 | u32 expkey[DES3_EDE_EXPKEY_WORDS]; | |
25 | }; | |
26 | ||
27 | void des_encrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src); | |
28 | void des_decrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src); | |
29 | ||
30 | void des3_ede_encrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src); | |
31 | void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src); | |
32 | ||
33 | /** | |
34 | * des_expand_key - Expand a DES input key into a key schedule | |
35 | * @ctx: the key schedule | |
36 | * @key: buffer containing the input key | |
37 | * @len: size of the buffer contents | |
38 | * | |
39 | * Returns 0 on success, -EINVAL if the input key is rejected and -ENOKEY if | |
40 | * the key is accepted but has been found to be weak. | |
41 | */ | |
42 | int des_expand_key(struct des_ctx *ctx, const u8 *key, unsigned int keylen); | |
43 | ||
44 | /** | |
45 | * des3_ede_expand_key - Expand a triple DES input key into a key schedule | |
46 | * @ctx: the key schedule | |
47 | * @key: buffer containing the input key | |
48 | * @len: size of the buffer contents | |
49 | * | |
50 | * Returns 0 on success, -EINVAL if the input key is rejected and -ENOKEY if | |
51 | * the key is accepted but has been found to be weak. Note that weak keys will | |
52 | * be rejected (and -EINVAL will be returned) when running in FIPS mode. | |
53 | */ | |
54 | int des3_ede_expand_key(struct des3_ede_ctx *ctx, const u8 *key, | |
55 | unsigned int keylen); | |
56 | ||
16d004a2 | 57 | #endif /* __CRYPTO_DES_H */ |