| 1 |
|
| 2 | |
| 3 | * DES & Triple DES EDE Cipher Algorithms.
|
| 4 |
|
| 5 |
|
| 6 | #ifndef __CRYPTO_DES_H
|
| 7 | #define __CRYPTO_DES_H
|
| 8 |
|
| 9 | #include <linux/types.h>
|
| 10 |
|
| 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 |
|
| 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 | * @keylen: 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 | * @keylen: 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 |
|
| 57 | #endif
|