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2729bb427f
This patch splits up the twofish crypto routine into a common part ( key setup ) which will be uses by all twofish crypto modules ( generic-c , i586 assembler and x86_64 assembler ) and generic-c part. It also creates a new header file which will be used by all 3 modules. This eliminates all code duplication. Correctness was verified with the tcrypt module and automated test scripts. Signed-off-by: Joachim Fritschi <jfritschi@freenet.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
23 lines
630 B
C
23 lines
630 B
C
#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 crypto_tfm *tfm, const u8 *key,
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unsigned int key_len, u32 *flags);
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#endif
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