/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _CRYPTO_TWOFISH_H
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#define _CRYPTO_TWOFISH_H
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#include <linux/types.h>
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#define TF_MIN_KEY_SIZE 16
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#define TF_MAX_KEY_SIZE 32
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#define TF_BLOCK_SIZE 16
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struct crypto_tfm;
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/* Structure for an expanded Twofish key. s contains the key-dependent
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* S-boxes composed with the MDS matrix; w contains the eight "whitening"
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* subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note
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* that k[i] corresponds to what the Twofish paper calls K[i+8]. */
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struct twofish_ctx {
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u32 s[4][256], w[8], k[32];
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};
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int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key,
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unsigned int key_len);
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int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len);
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#endif
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