diff options
Diffstat (limited to 'drivers/staging/lustre/include/linux/libcfs/libcfs_crypto.h')
| -rw-r--r-- | drivers/staging/lustre/include/linux/libcfs/libcfs_crypto.h | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_crypto.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_crypto.h deleted file mode 100644 index 3a72117140ed..000000000000 --- a/drivers/staging/lustre/include/linux/libcfs/libcfs_crypto.h +++ /dev/null @@ -1,205 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see http://www.gnu.org/licenses - * - * Please visit http://www.xyratex.com/contact if you need additional - * information or have any questions. - * - * GPL HEADER END - */ - -/* - * Copyright 2012 Xyratex Technology Limited - */ - -#ifndef _LIBCFS_CRYPTO_H -#define _LIBCFS_CRYPTO_H - -struct cfs_crypto_hash_type { - char *cht_name; /*< hash algorithm name, equal to - * format name for crypto api - */ - unsigned int cht_key; /*< init key by default (valid for - * 4 bytes context like crc32, adler - */ - unsigned int cht_size; /**< hash digest size */ -}; - -enum cfs_crypto_hash_alg { - CFS_HASH_ALG_NULL = 0, - CFS_HASH_ALG_ADLER32, - CFS_HASH_ALG_CRC32, - CFS_HASH_ALG_MD5, - CFS_HASH_ALG_SHA1, - CFS_HASH_ALG_SHA256, - CFS_HASH_ALG_SHA384, - CFS_HASH_ALG_SHA512, - CFS_HASH_ALG_CRC32C, - CFS_HASH_ALG_MAX, - CFS_HASH_ALG_UNKNOWN = 0xff -}; - -static struct cfs_crypto_hash_type hash_types[] = { - [CFS_HASH_ALG_NULL] = { - .cht_name = "null", - .cht_key = 0, - .cht_size = 0 - }, - [CFS_HASH_ALG_ADLER32] = { - .cht_name = "adler32", - .cht_key = 1, - .cht_size = 4 - }, - [CFS_HASH_ALG_CRC32] = { - .cht_name = "crc32", - .cht_key = ~0, - .cht_size = 4 - }, - [CFS_HASH_ALG_CRC32C] = { - .cht_name = "crc32c", - .cht_key = ~0, - .cht_size = 4 - }, - [CFS_HASH_ALG_MD5] = { - .cht_name = "md5", - .cht_key = 0, - .cht_size = 16 - }, - [CFS_HASH_ALG_SHA1] = { - .cht_name = "sha1", - .cht_key = 0, - .cht_size = 20 - }, - [CFS_HASH_ALG_SHA256] = { - .cht_name = "sha256", - .cht_key = 0, - .cht_size = 32 - }, - [CFS_HASH_ALG_SHA384] = { - .cht_name = "sha384", - .cht_key = 0, - .cht_size = 48 - }, - [CFS_HASH_ALG_SHA512] = { - .cht_name = "sha512", - .cht_key = 0, - .cht_size = 64 - }, - [CFS_HASH_ALG_MAX] = { - .cht_name = NULL, - .cht_key = 0, - .cht_size = 64 - }, -}; - -/* Maximum size of hash_types[].cht_size */ -#define CFS_CRYPTO_HASH_DIGESTSIZE_MAX 64 - -/** - * Return hash algorithm information for the specified algorithm identifier - * - * Hash information includes algorithm name, initial seed, hash size. - * - * \retval cfs_crypto_hash_type for valid ID (CFS_HASH_ALG_*) - * \retval NULL for unknown algorithm identifier - */ -static inline const struct cfs_crypto_hash_type * -cfs_crypto_hash_type(enum cfs_crypto_hash_alg hash_alg) -{ - struct cfs_crypto_hash_type *ht; - - if (hash_alg < CFS_HASH_ALG_MAX) { - ht = &hash_types[hash_alg]; - if (ht->cht_name) - return ht; - } - return NULL; -} - -/** - * Return hash name for hash algorithm identifier - * - * \param[in] hash_alg hash alrgorithm id (CFS_HASH_ALG_*) - * - * \retval string name of known hash algorithm - * \retval "unknown" if hash algorithm is unknown - */ -static inline const char * -cfs_crypto_hash_name(enum cfs_crypto_hash_alg hash_alg) -{ - const struct cfs_crypto_hash_type *ht; - - ht = cfs_crypto_hash_type(hash_alg); - if (ht) - return ht->cht_name; - return "unknown"; -} - -/** - * Return digest size for hash algorithm type - * - * \param[in] hash_alg hash alrgorithm id (CFS_HASH_ALG_*) - * - * \retval hash algorithm digest size in bytes - * \retval 0 if hash algorithm type is unknown - */ -static inline int cfs_crypto_hash_digestsize(enum cfs_crypto_hash_alg hash_alg) -{ - const struct cfs_crypto_hash_type *ht; - - ht = cfs_crypto_hash_type(hash_alg); - if (ht) - return ht->cht_size; - return 0; -} - -/** - * Find hash algorithm ID for the specified algorithm name - * - * \retval hash algorithm ID for valid ID (CFS_HASH_ALG_*) - * \retval CFS_HASH_ALG_UNKNOWN for unknown algorithm name - */ -static inline unsigned char cfs_crypto_hash_alg(const char *algname) -{ - enum cfs_crypto_hash_alg hash_alg; - - for (hash_alg = 0; hash_alg < CFS_HASH_ALG_MAX; hash_alg++) - if (!strcmp(hash_types[hash_alg].cht_name, algname)) - return hash_alg; - - return CFS_HASH_ALG_UNKNOWN; -} - -int cfs_crypto_hash_digest(enum cfs_crypto_hash_alg hash_alg, - const void *buf, unsigned int buf_len, - unsigned char *key, unsigned int key_len, - unsigned char *hash, unsigned int *hash_len); - -struct ahash_request * -cfs_crypto_hash_init(enum cfs_crypto_hash_alg hash_alg, - unsigned char *key, unsigned int key_len); -int cfs_crypto_hash_update_page(struct ahash_request *desc, - struct page *page, unsigned int offset, - unsigned int len); -int cfs_crypto_hash_update(struct ahash_request *desc, const void *buf, - unsigned int buf_len); -int cfs_crypto_hash_final(struct ahash_request *desc, - unsigned char *hash, unsigned int *hash_len); -int cfs_crypto_register(void); -void cfs_crypto_unregister(void); -int cfs_crypto_hash_speed(enum cfs_crypto_hash_alg hash_alg); -#endif |