/* SPDX-License-Identifier: GPL-2.0 *//*  * DES & Triple DES EDE Cipher Algorithms. */ #ifndef __CRYPTO_DES_H#define __CRYPTO_DES_H #include <linux/types.h> #define DES_KEY_SIZE		8#define DES_EXPKEY_WORDS	32#define DES_BLOCK_SIZE		8 #define DES3_EDE_KEY_SIZE	(3 * DES_KEY_SIZE)#define DES3_EDE_EXPKEY_WORDS	(3 * DES_EXPKEY_WORDS)#define DES3_EDE_BLOCK_SIZE	DES_BLOCK_SIZE struct des_ctx {	u32 expkey[DES_EXPKEY_WORDS];}; struct des3_ede_ctx {	u32 expkey[DES3_EDE_EXPKEY_WORDS];}; void des_encrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src);void des_decrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src); void des3_ede_encrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src);void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src); /** * des_expand_key - Expand a DES input key into a key schedule * @ctx: the key schedule * @key: buffer containing the input key * @len: size of the buffer contents * * Returns 0 on success, -EINVAL if the input key is rejected and -ENOKEY if * the key is accepted but has been found to be weak. */int des_expand_key(struct des_ctx *ctx, const u8 *key, unsigned int keylen); /** * des3_ede_expand_key - Expand a triple DES input key into a key schedule * @ctx: the key schedule * @key: buffer containing the input key * @len: size of the buffer contents * * Returns 0 on success, -EINVAL if the input key is rejected and -ENOKEY if * the key is accepted but has been found to be weak. Note that weak keys will * be rejected (and -EINVAL will be returned) when running in FIPS mode. */int des3_ede_expand_key(struct des3_ede_ctx *ctx, const u8 *key,			unsigned int keylen); #endif /* __CRYPTO_DES_H */