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-rw-r--r--crypto/crc32c.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/crypto/crc32c.c b/crypto/crc32c.c
deleted file mode 100644
index 0fa744392a4..00000000000
--- a/crypto/crc32c.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Cryptographic API.
- *
- * CRC32C chksum
- *
- * This module file is a wrapper to invoke the lib/crc32c routines.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- */
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/crypto.h>
-#include <linux/crc32c.h>
-#include <linux/kernel.h>
-
-#define CHKSUM_BLOCK_SIZE 32
-#define CHKSUM_DIGEST_SIZE 4
-
-struct chksum_ctx {
- u32 crc;
- u32 key;
-};
-
-/*
- * Steps through buffer one byte at at time, calculates reflected
- * crc using table.
- */
-
-static void chksum_init(struct crypto_tfm *tfm)
-{
- struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
- mctx->crc = mctx->key;
-}
-
-/*
- * Setting the seed allows arbitrary accumulators and flexible XOR policy
- * If your algorithm starts with ~0, then XOR with ~0 before you set
- * the seed.
- */
-static int chksum_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
- if (keylen != sizeof(mctx->crc)) {
- tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
- return -EINVAL;
- }
- mctx->key = le32_to_cpu(*(__le32 *)key);
- return 0;
-}
-
-static void chksum_update(struct crypto_tfm *tfm, const u8 *data,
- unsigned int length)
-{
- struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
- mctx->crc = crc32c(mctx->crc, data, length);
-}
-
-static void chksum_final(struct crypto_tfm *tfm, u8 *out)
-{
- struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
- *(__le32 *)out = ~cpu_to_le32(mctx->crc);
-}
-
-static int crc32c_cra_init(struct crypto_tfm *tfm)
-{
- struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
- mctx->key = ~0;
- return 0;
-}
-
-static struct crypto_alg alg = {
- .cra_name = "crc32c",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = CHKSUM_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct chksum_ctx),
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(alg.cra_list),
- .cra_init = crc32c_cra_init,
- .cra_u = {
- .digest = {
- .dia_digestsize= CHKSUM_DIGEST_SIZE,
- .dia_setkey = chksum_setkey,
- .dia_init = chksum_init,
- .dia_update = chksum_update,
- .dia_final = chksum_final
- }
- }
-};
-
-static int __init init(void)
-{
- return crypto_register_alg(&alg);
-}
-
-static void __exit fini(void)
-{
- crypto_unregister_alg(&alg);
-}
-
-module_init(init);
-module_exit(fini);
-
-MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
-MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations wrapper for lib/crc32c");
-MODULE_LICENSE("GPL");