| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _CRYPTO_TWOFISH_H |
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| 3 | #define _CRYPTO_TWOFISH_H |
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| 4 | |
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| 5 | #include <linux/types.h> |
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| 6 | |
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| 7 | #define TF_MIN_KEY_SIZE 16 |
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| 8 | #define TF_MAX_KEY_SIZE 32 |
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| 9 | #define TF_BLOCK_SIZE 16 |
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| 10 | |
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| 11 | struct crypto_tfm; |
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| 12 | |
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| 13 | /* Structure for an expanded Twofish key. s contains the key-dependent |
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| 14 | * S-boxes composed with the MDS matrix; w contains the eight "whitening" |
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| 15 | * subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note |
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| 16 | * that k[i] corresponds to what the Twofish paper calls K[i+8]. */ |
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| 17 | struct twofish_ctx { |
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| 18 | u32 s[4][256], w[8], k[32]; |
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| 19 | }; |
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| 20 | |
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| 21 | int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key, |
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| 22 | unsigned int key_len); |
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| 23 | int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len); |
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| 24 | |
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| 25 | #endif |
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| 26 | |
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