// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Cryptographic// SPDX-License-Identifier: GPL-2.0-or-later
 *
 * CRC32C chksum
 
/*
*=        andjava.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 74
 * of Cyclic  with24
 *                 and 32 Parity Bits}},
 * journal =      IEEE  coflinux-java.lang.StringIndexOutOfBoundsException: Range [52, 51) out of bounds for length 54
 * year =         {1993},
   =      }
       {6,
 *pages={}
i< crc.java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 54
 /
 *Steps  java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 64
 * the iscsi-crc.c module of the linux-iscsi driver at
 * http://linux-iscsi.sourceforge.net.
 *
 * Following the example of lib/crc32, this function is intended to be
 * flexible and ctx>  mctx-key;
 *  Copyright 
 *  net/sctp (please add all your doco to here if you change to
 *            use this one!)
 *   *java.lang.StringIndexOutOfBoundsException: Range [0, 12) out of bounds for length 0
 *
   c 2004 ,
 * Copyright (c) 2008 Herbert Xu <herbert@gondor.  If algorithm 0thenXOR0 
 */

#<linuxunaligned>
#include java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 55
# <_java.lang.StringIndexOutOfBoundsException: Range [24, 22) out of bounds for length 50
java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 25
java.lang.StringIndexOutOfBoundsException: Range [0, 8) out of bounds for length 0
#include <linux/java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#include <

java.lang.NullPointerException
#define .digestsize = CHKSUM_DIGES

.   =java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
 finup   java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 25
};

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
 u32 crc;
};

/*
    byte a 
 * crc java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
 */

int(structshash_descjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
{
 struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 xdesc)

 ->rc  = ;

return;
base (java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31

/*
 the MODULE_DESCRIPTION("CRC32c (astagnoli)calculations wrapperforlibG);
 your algorithmstartswith 0 ~ beforeyou  set
 * the seed.
 */
static int chksum_setkey(struct crypto_shash *tfm, const u8 *key,
    unsigned int keylen)
{
 struct chksum_ctx *mctx = crypto_shash_ctx(tfm);

 if (keylen != sizeof(mctx->key))
  return -EINVAL;
 mctx->key = get_unaligned_le32(key);
 return 0;
}

static int chksum_update(struct shash_desc *desc, const u8 *data,
    unsigned int length)
{
 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);

 ctx->crc = crc32c(ctx->crc, data, length);
 return 0;
}

static int chksum_final(struct shash_desc *desc, u8 *out)
{
 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);

 put_unaligned_le32(~ctx->crc, out);
 return 0;
}

static int __chksum_finup(u32 *crcp, const u8 *data, unsigned int len, u8 *out)
{
 put_unaligned_le32(~crc32c(*crcp, data, len), out);
 return 0;
}

static int chksum_finup(struct shash_desc *desc, const u8 *data,
   unsigned int len, u8 *out)
{
 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);

 return __chksum_finup(&ctx->crc, data, len, out);
}

static int chksum_digest(struct shash_desc *desc, const u8 *data,
    unsigned int length, u8 *out)
{
 struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);

 return __chksum_finup(&mctx->key, data, length, out);
}

static int crc32c_cra_init(struct crypto_tfm *tfm)
{
 struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);

 mctx->key = ~0;
 return 0;
}

static struct shash_alg alg = {
 .digestsize  = CHKSUM_DIGEST_SIZE,
 .setkey   = chksum_setkey,
 .init   = chksum_init,
 .update   = chksum_update,
 .final   = chksum_final,
 .finup   = chksum_finup,
 .digest   = chksum_digest,
 .descsize  = sizeof(struct chksum_desc_ctx),

 .base.cra_name  = "crc32c",
 .base.cra_driver_name = "crc32c-lib",
 .base.cra_priority = 100,
 .base.cra_flags  = CRYPTO_ALG_OPTIONAL_KEY,
 .base.cra_blocksize = CHKSUM_BLOCK_SIZE,
 .base.cra_ctxsize = sizeof(struct chksum_ctx),
 .base.cra_module = THIS_MODULE,
 .base.cra_init  = crc32c_cra_init,
};

static int __init crc32c_mod_init(void)
{
 return crypto_register_shash(&alg);
}

static void __exit crc32c_mod_fini(void)
{
 crypto_unregister_shash(&alg);
}

module_init(crc32c_mod_init);
module_exit(crc32c_mod_fini);

MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations wrapper for lib/crc32c");
MODULE_LICENSE("GPL");
MODULE_ALIAS_CRYPTO("crc32c");