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-rw-r--r--crypto/digest.c240
1 files changed, 0 insertions, 240 deletions
diff --git a/crypto/digest.c b/crypto/digest.c
deleted file mode 100644
index 5d3f1303da9..00000000000
--- a/crypto/digest.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- * Cryptographic API.
- *
- * Digest operations.
- *
- * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
- *
- * 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 <crypto/internal/hash.h>
-#include <crypto/scatterwalk.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/hardirq.h>
-#include <linux/highmem.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/scatterlist.h>
-
-#include "internal.h"
-
-static int init(struct hash_desc *desc)
-{
- struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);
-
- tfm->__crt_alg->cra_digest.dia_init(tfm);
- return 0;
-}
-
-static int update2(struct hash_desc *desc,
- struct scatterlist *sg, unsigned int nbytes)
-{
- struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);
- unsigned int alignmask = crypto_tfm_alg_alignmask(tfm);
-
- if (!nbytes)
- return 0;
-
- for (;;) {
- struct page *pg = sg_page(sg);
- unsigned int offset = sg->offset;
- unsigned int l = sg->length;
-
- if (unlikely(l > nbytes))
- l = nbytes;
- nbytes -= l;
-
- do {
- unsigned int bytes_from_page = min(l, ((unsigned int)
- (PAGE_SIZE)) -
- offset);
- char *src = crypto_kmap(pg, 0);
- char *p = src + offset;
-
- if (unlikely(offset & alignmask)) {
- unsigned int bytes =
- alignmask + 1 - (offset & alignmask);
- bytes = min(bytes, bytes_from_page);
- tfm->__crt_alg->cra_digest.dia_update(tfm, p,
- bytes);
- p += bytes;
- bytes_from_page -= bytes;
- l -= bytes;
- }
- tfm->__crt_alg->cra_digest.dia_update(tfm, p,
- bytes_from_page);
- crypto_kunmap(src, 0);
- crypto_yield(desc->flags);
- offset = 0;
- pg++;
- l -= bytes_from_page;
- } while (l > 0);
-
- if (!nbytes)
- break;
- sg = scatterwalk_sg_next(sg);
- }
-
- return 0;
-}
-
-static int update(struct hash_desc *desc,
- struct scatterlist *sg, unsigned int nbytes)
-{
- if (WARN_ON_ONCE(in_irq()))
- return -EDEADLK;
- return update2(desc, sg, nbytes);
-}
-
-static int final(struct hash_desc *desc, u8 *out)
-{
- struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);
- unsigned long alignmask = crypto_tfm_alg_alignmask(tfm);
- struct digest_alg *digest = &tfm->__crt_alg->cra_digest;
-
- if (unlikely((unsigned long)out & alignmask)) {
- unsigned long align = alignmask + 1;
- unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
- u8 *dst = (u8 *)ALIGN(addr, align) +
- ALIGN(tfm->__crt_alg->cra_ctxsize, align);
-
- digest->dia_final(tfm, dst);
- memcpy(out, dst, digest->dia_digestsize);
- } else
- digest->dia_final(tfm, out);
-
- return 0;
-}
-
-static int nosetkey(struct crypto_hash *tfm, const u8 *key, unsigned int keylen)
-{
- crypto_hash_clear_flags(tfm, CRYPTO_TFM_RES_MASK);
- return -ENOSYS;
-}
-
-static int setkey(struct crypto_hash *hash, const u8 *key, unsigned int keylen)
-{
- struct crypto_tfm *tfm = crypto_hash_tfm(hash);
-
- crypto_hash_clear_flags(hash, CRYPTO_TFM_RES_MASK);
- return tfm->__crt_alg->cra_digest.dia_setkey(tfm, key, keylen);
-}
-
-static int digest(struct hash_desc *desc,
- struct scatterlist *sg, unsigned int nbytes, u8 *out)
-{
- if (WARN_ON_ONCE(in_irq()))
- return -EDEADLK;
-
- init(desc);
- update2(desc, sg, nbytes);
- return final(desc, out);
-}
-
-int crypto_init_digest_ops(struct crypto_tfm *tfm)
-{
- struct hash_tfm *ops = &tfm->crt_hash;
- struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
-
- if (dalg->dia_digestsize > PAGE_SIZE / 8)
- return -EINVAL;
-
- ops->init = init;
- ops->update = update;
- ops->final = final;
- ops->digest = digest;
- ops->setkey = dalg->dia_setkey ? setkey : nosetkey;
- ops->digestsize = dalg->dia_digestsize;
-
- return 0;
-}
-
-void crypto_exit_digest_ops(struct crypto_tfm *tfm)
-{
-}
-
-static int digest_async_nosetkey(struct crypto_ahash *tfm_async, const u8 *key,
- unsigned int keylen)
-{
- crypto_ahash_clear_flags(tfm_async, CRYPTO_TFM_RES_MASK);
- return -ENOSYS;
-}
-
-static int digest_async_setkey(struct crypto_ahash *tfm_async, const u8 *key,
- unsigned int keylen)
-{
- struct crypto_tfm *tfm = crypto_ahash_tfm(tfm_async);
- struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
-
- crypto_ahash_clear_flags(tfm_async, CRYPTO_TFM_RES_MASK);
- return dalg->dia_setkey(tfm, key, keylen);
-}
-
-static int digest_async_init(struct ahash_request *req)
-{
- struct crypto_tfm *tfm = req->base.tfm;
- struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
-
- dalg->dia_init(tfm);
- return 0;
-}
-
-static int digest_async_update(struct ahash_request *req)
-{
- struct crypto_tfm *tfm = req->base.tfm;
- struct hash_desc desc = {
- .tfm = __crypto_hash_cast(tfm),
- .flags = req->base.flags,
- };
-
- update(&desc, req->src, req->nbytes);
- return 0;
-}
-
-static int digest_async_final(struct ahash_request *req)
-{
- struct crypto_tfm *tfm = req->base.tfm;
- struct hash_desc desc = {
- .tfm = __crypto_hash_cast(tfm),
- .flags = req->base.flags,
- };
-
- final(&desc, req->result);
- return 0;
-}
-
-static int digest_async_digest(struct ahash_request *req)
-{
- struct crypto_tfm *tfm = req->base.tfm;
- struct hash_desc desc = {
- .tfm = __crypto_hash_cast(tfm),
- .flags = req->base.flags,
- };
-
- return digest(&desc, req->src, req->nbytes, req->result);
-}
-
-int crypto_init_digest_ops_async(struct crypto_tfm *tfm)
-{
- struct ahash_tfm *crt = &tfm->crt_ahash;
- struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
-
- if (dalg->dia_digestsize > PAGE_SIZE / 8)
- return -EINVAL;
-
- crt->init = digest_async_init;
- crt->update = digest_async_update;
- crt->final = digest_async_final;
- crt->digest = digest_async_digest;
- crt->setkey = dalg->dia_setkey ? digest_async_setkey :
- digest_async_nosetkey;
- crt->digestsize = dalg->dia_digestsize;
-
- return 0;
-}
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