[CRYPTO] skcipher: Add crypto_grab_skcipher interface

[deliverable/linux.git] / crypto / ablkcipher.c

diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
index 2731acb86e7d53755bbfd3d7cdc98926844ca887..0083140304d20ab324a00743db06bee06e70ee5b 100644 (file)
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -13,14 +13,16 @@
  *
  */
 
-#include <crypto/algapi.h>
-#include <linux/errno.h>
+#include <crypto/internal/skcipher.h>
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/seq_file.h>
 
+#include "internal.h"
+
 static int setkey_unaligned(struct crypto_ablkcipher *tfm, const u8 *key,
                            unsigned int keylen)
 {
@@ -105,5 +107,24 @@ const struct crypto_type crypto_ablkcipher_type = {
 };
 EXPORT_SYMBOL_GPL(crypto_ablkcipher_type);
 
+int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
+                        u32 type, u32 mask)
+{
+       struct crypto_alg *alg;
+       int err;
+
+       type = crypto_skcipher_type(type);
+       mask = crypto_skcipher_mask(mask);
+
+       alg = crypto_alg_mod_lookup(name, type, mask);
+       if (IS_ERR(alg))
+               return PTR_ERR(alg);
+
+       err = crypto_init_spawn(&spawn->base, alg, spawn->base.inst, mask);
+       crypto_mod_put(alg);
+       return err;
+}
+EXPORT_SYMBOL_GPL(crypto_grab_skcipher);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Asynchronous block chaining cipher type");