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Name	Size	Permission	Date
internal	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
ablk_helper.h	734 B	-rw-r--r--	2016-01-11 00:01
aead.h	18.71 KB	-rw-r--r--	2016-01-11 00:01
aes.h	1019 B	-rw-r--r--	2016-01-11 00:01
akcipher.h	11.52 KB	-rw-r--r--	2016-01-11 00:01
algapi.h	10.31 KB	-rw-r--r--	2016-01-11 00:01
authenc.h	845 B	-rw-r--r--	2016-01-11 00:01
b128ops.h	2.41 KB	-rw-r--r--	2016-01-11 00:01
blowfish.h	376 B	-rw-r--r--	2016-01-11 00:01
cast5.h	551 B	-rw-r--r--	2016-01-11 00:01
cast6.h	597 B	-rw-r--r--	2016-01-11 00:01
cast_common.h	193 B	-rw-r--r--	2016-01-11 00:01
chacha20.h	595 B	-rw-r--r--	2016-01-11 00:01
compress.h	4.03 KB	-rw-r--r--	2016-01-11 00:01
cryptd.h	1.84 KB	-rw-r--r--	2016-01-11 00:01
crypto_wq.h	122 B	-rw-r--r--	2016-01-11 00:01
ctr.h	524 B	-rw-r--r--	2016-01-11 00:01
des.h	503 B	-rw-r--r--	2016-01-11 00:01
dh.h	2.61 KB	-rw-r--r--	2021-04-16 11:57
drbg.h	8.57 KB	-rw-r--r--	2016-01-11 00:01
ecdh.h	2.66 KB	-rw-r--r--	2021-04-16 11:57
gf128mul.h	8.04 KB	-rw-r--r--	2016-01-11 00:01
ghash.h	342 B	-rw-r--r--	2021-04-16 11:57
hash.h	29.56 KB	-rw-r--r--	2021-04-16 11:57
hash_info.h	1.13 KB	-rw-r--r--	2021-04-16 11:57
if_alg.h	2.46 KB	-rw-r--r--	2021-04-16 11:57
kpp.h	9.22 KB	-rw-r--r--	2021-04-16 11:57
lrw.h	1.18 KB	-rw-r--r--	2016-01-11 00:01
mcryptd.h	2.33 KB	-rw-r--r--	2021-04-16 11:57
md5.h	401 B	-rw-r--r--	2016-01-11 00:01
null.h	303 B	-rw-r--r--	2016-01-11 00:01
padlock.h	649 B	-rw-r--r--	2016-01-11 00:01
pcrypt.h	1.4 KB	-rw-r--r--	2016-01-11 00:01
pkcs7.h	1.2 KB	-rw-r--r--	2016-01-11 00:01
poly1305.h	881 B	-rw-r--r--	2021-04-16 11:57
public_key.h	2.79 KB	-rw-r--r--	2021-04-16 11:57
rng.h	6.59 KB	-rw-r--r--	2016-01-11 00:01
scatterwalk.h	2.91 KB	-rw-r--r--	2016-01-11 00:01
serpent.h	673 B	-rw-r--r--	2016-01-11 00:01
sha.h	2.66 KB	-rw-r--r--	2016-01-11 00:01
sha1_base.h	2.47 KB	-rw-r--r--	2016-01-11 00:01
sha256_base.h	3.03 KB	-rw-r--r--	2016-01-11 00:01
sha512_base.h	3.19 KB	-rw-r--r--	2016-01-11 00:01
skcipher.h	15.63 KB	-rw-r--r--	2021-04-16 11:57
twofish.h	716 B	-rw-r--r--	2016-01-11 00:01
xts.h	1.19 KB	-rw-r--r--	2021-04-16 11:57

Rename

#ifndef _CRYPTO_XTS_H
#define _CRYPTO_XTS_H

#include <crypto/b128ops.h>
#include <linux/crypto.h>
#include <crypto/algapi.h>
#include <linux/fips.h>

struct scatterlist;
struct blkcipher_desc;

#define XTS_BLOCK_SIZE 16

struct xts_crypt_req {
	be128 *tbuf;
	unsigned int tbuflen;

void *tweak_ctx;
	void (*tweak_fn)(void *ctx, u8* dst, const u8* src);
	void *crypt_ctx;
	void (*crypt_fn)(void *ctx, u8 *blks, unsigned int nbytes);
};

#define XTS_TWEAK_CAST(x) ((void (*)(void *, u8*, const u8*))(x))

int xts_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
	      struct scatterlist *src, unsigned int nbytes,
	      struct xts_crypt_req *req);

static inline int xts_check_key(struct crypto_tfm *tfm,
				const u8 *key, unsigned int keylen)
{
	u32 *flags = &tfm->crt_flags;

/*
	 * key consists of keys of equal size concatenated, therefore
	 * the length must be even.
	 */
	if (keylen % 2) {
		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
		return -EINVAL;
	}

/* ensure that the AES and tweak key are not identical */
	if (fips_enabled &&
	    !crypto_memneq(key, key + (keylen / 2), keylen / 2)) {
		*flags |= CRYPTO_TFM_RES_WEAK_KEY;
		return -EINVAL;
	}

return 0;
}

#endif  /* _CRYPTO_XTS_H */