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authorHerbert Xu <herbert@gondor.apana.org.au>2007-12-01 18:35:38 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:49 +1100
commit03bf712fb4defc7831c727d1e32d0269f7f96de0 (patch)
tree44a7c169b6988cbb86cbe93fc33692691a9f24a9 /include/crypto
parent[CRYPTO] seqiv: Add Sequence Number IV Generator (diff)
downloadlinux-dev-03bf712fb4defc7831c727d1e32d0269f7f96de0.tar.xz
linux-dev-03bf712fb4defc7831c727d1e32d0269f7f96de0.zip
[CRYPTO] skcipher: Add top-level givencrypt/givdecrypt calls
This patch finally makes the givencrypt/givdecrypt operations available to users by adding crypto_skcipher_givencrypt and crypto_skcipher_givdecrypt. A suite of helpers to allocate and fill in the request is also available. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/skcipher.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index c283fab5eddb..25fd6126522d 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -14,6 +14,8 @@
#define _CRYPTO_SKCIPHER_H
#include <linux/crypto.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
/**
* struct skcipher_givcrypt_request - Crypto request with IV generation
@@ -34,5 +36,75 @@ static inline struct crypto_ablkcipher *skcipher_givcrypt_reqtfm(
return crypto_ablkcipher_reqtfm(&req->creq);
}
+static inline int crypto_skcipher_givencrypt(
+ struct skcipher_givcrypt_request *req)
+{
+ struct ablkcipher_tfm *crt =
+ crypto_ablkcipher_crt(skcipher_givcrypt_reqtfm(req));
+ return crt->givencrypt(req);
+};
+
+static inline int crypto_skcipher_givdecrypt(
+ struct skcipher_givcrypt_request *req)
+{
+ struct ablkcipher_tfm *crt =
+ crypto_ablkcipher_crt(skcipher_givcrypt_reqtfm(req));
+ return crt->givdecrypt(req);
+};
+
+static inline void skcipher_givcrypt_set_tfm(
+ struct skcipher_givcrypt_request *req, struct crypto_ablkcipher *tfm)
+{
+ req->creq.base.tfm = crypto_ablkcipher_tfm(tfm);
+}
+
+static inline struct skcipher_givcrypt_request *skcipher_givcrypt_cast(
+ struct crypto_async_request *req)
+{
+ return container_of(ablkcipher_request_cast(req),
+ struct skcipher_givcrypt_request, creq);
+}
+
+static inline struct skcipher_givcrypt_request *skcipher_givcrypt_alloc(
+ struct crypto_ablkcipher *tfm, gfp_t gfp)
+{
+ struct skcipher_givcrypt_request *req;
+
+ req = kmalloc(sizeof(struct skcipher_givcrypt_request) +
+ crypto_ablkcipher_reqsize(tfm), gfp);
+
+ if (likely(req))
+ skcipher_givcrypt_set_tfm(req, tfm);
+
+ return req;
+}
+
+static inline void skcipher_givcrypt_free(struct skcipher_givcrypt_request *req)
+{
+ kfree(req);
+}
+
+static inline void skcipher_givcrypt_set_callback(
+ struct skcipher_givcrypt_request *req, u32 flags,
+ crypto_completion_t complete, void *data)
+{
+ ablkcipher_request_set_callback(&req->creq, flags, complete, data);
+}
+
+static inline void skcipher_givcrypt_set_crypt(
+ struct skcipher_givcrypt_request *req,
+ struct scatterlist *src, struct scatterlist *dst,
+ unsigned int nbytes, void *iv)
+{
+ ablkcipher_request_set_crypt(&req->creq, src, dst, nbytes, iv);
+}
+
+static inline void skcipher_givcrypt_set_giv(
+ struct skcipher_givcrypt_request *req, u8 *giv, u64 seq)
+{
+ req->giv = giv;
+ req->seq = seq;
+}
+
#endif /* _CRYPTO_SKCIPHER_H */