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authorHerbert Xu <herbert@gondor.apana.org.au>2007-12-02 18:49:21 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:29 +1100
commit7ba683a6deba70251756aa5a021cdaa5c875a7a2 (patch)
tree80f63039b56bef0287fdf878163a5fe109821e58 /include
parent[CRYPTO] authenc: Use or instead of max on alignment masks (diff)
downloadlinux-dev-7ba683a6deba70251756aa5a021cdaa5c875a7a2.tar.xz
linux-dev-7ba683a6deba70251756aa5a021cdaa5c875a7a2.zip
[CRYPTO] aead: Make authsize a run-time parameter
As it is authsize is an algorithm paramter which cannot be changed at run-time. This is inconvenient because hardware that implements such algorithms would have to register each authsize that they support separately. Since authsize is a property common to all AEAD algorithms, we can add a function setauthsize that sets it at run-time, just like setkey. This patch does exactly that and also changes authenc so that authsize is no longer a parameter of its template. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
-rw-r--r--include/linux/crypto.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index f56ae8721bc9..48aa5959abbb 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -187,11 +187,12 @@ struct ablkcipher_alg {
struct aead_alg {
int (*setkey)(struct crypto_aead *tfm, const u8 *key,
unsigned int keylen);
+ int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
int (*encrypt)(struct aead_request *req);
int (*decrypt)(struct aead_request *req);
unsigned int ivsize;
- unsigned int authsize;
+ unsigned int maxauthsize;
};
struct blkcipher_alg {
@@ -754,6 +755,8 @@ static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
return crypto_aead_crt(tfm)->setkey(tfm, key, keylen);
}
+int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
+
static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
{
return __crypto_aead_cast(req->base.tfm);