1 files changed, 154 insertions, 0 deletions

diff --git a/include/crypto/hash.h b/include/crypto/hash.h
new file mode 100644
index 000000000000..d12498ec8a4e
--- /dev/null
+++ b/include/crypto/hash.h
@@ -0,0 +1,154 @@
+/*
+ * Hash: Hash algorithms under the crypto API
+ * 
+ * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.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.
+ *
+ */
+
+#ifndef _CRYPTO_HASH_H
+#define _CRYPTO_HASH_H
+
+#include <linux/crypto.h>
+
+struct crypto_ahash {
+        struct crypto_tfm base;
+};
+
+static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
+{
+        return (struct crypto_ahash *)tfm;
+}
+
+static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name,
+                                                      u32 type, u32 mask)
+{
+        type &= ~CRYPTO_ALG_TYPE_MASK;
+        mask &= ~CRYPTO_ALG_TYPE_MASK;
+        type |= CRYPTO_ALG_TYPE_AHASH;
+        mask |= CRYPTO_ALG_TYPE_AHASH_MASK;
+
+        return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask));
+}
+
+static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
+{
+        return &tfm->base;
+}
+
+static inline void crypto_free_ahash(struct crypto_ahash *tfm)
+{
+        crypto_free_tfm(crypto_ahash_tfm(tfm));
+}
+
+static inline unsigned int crypto_ahash_alignmask(
+        struct crypto_ahash *tfm)
+{
+        return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
+}
+
+static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm)
+{
+        return &crypto_ahash_tfm(tfm)->crt_ahash;
+}
+
+static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
+{
+        return crypto_ahash_crt(tfm)->digestsize;
+}
+
+static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
+{
+        return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
+}
+
+static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
+{
+        crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
+}
+
+static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
+{
+        crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
+}
+
+static inline struct crypto_ahash *crypto_ahash_reqtfm(
+        struct ahash_request *req)
+{
+        return __crypto_ahash_cast(req->base.tfm);
+}
+
+static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
+{
+        return crypto_ahash_crt(tfm)->reqsize;
+}
+
+static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
+                                      const u8 *key, unsigned int keylen)
+{
+        struct ahash_tfm *crt = crypto_ahash_crt(tfm);
+
+        return crt->setkey(tfm, key, keylen);
+}
+
+static inline int crypto_ahash_digest(struct ahash_request *req)
+{
+        struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
+        return crt->digest(req);
+}
+
+static inline void ahash_request_set_tfm(struct ahash_request *req,
+                                         struct crypto_ahash *tfm)
+{
+        req->base.tfm = crypto_ahash_tfm(tfm);
+}
+
+static inline struct ahash_request *ahash_request_alloc(
+        struct crypto_ahash *tfm, gfp_t gfp)
+{
+        struct ahash_request *req;
+
+        req = kmalloc(sizeof(struct ahash_request) +
+                      crypto_ahash_reqsize(tfm), gfp);
+
+        if (likely(req))
+                ahash_request_set_tfm(req, tfm);
+
+        return req;
+}
+
+static inline void ahash_request_free(struct ahash_request *req)
+{
+        kfree(req);
+}
+
+static inline struct ahash_request *ahash_request_cast(
+        struct crypto_async_request *req)
+{
+        return container_of(req, struct ahash_request, base);
+}
+
+static inline void ahash_request_set_callback(struct ahash_request *req,
+                                              u32 flags,
+                                              crypto_completion_t complete,
+                                              void *data)
+{
+        req->base.complete = complete;
+        req->base.data = data;
+        req->base.flags = flags;
+}
+
+static inline void ahash_request_set_crypt(struct ahash_request *req,
+                                           struct scatterlist *src, u8 *result,
+                                           unsigned int nbytes)
+{
+        req->src = src;
+        req->nbytes = nbytes;
+        req->result = result;
+}
+
+#endif  /* _CRYPTO_HASH_H */