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/* SPDX-License-Identifier: GPL-2.0 */ /* * DES & Triple DES EDE Cipher Algorithms. */ #ifndef __CRYPTO_DES_H #define __CRYPTO_DES_H #include #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