Update bcachefs sources to 3610542890 bcachefs: Convert to skcipher interface for...

[bcachefs-tools-debian] / linux / crypto / api.c

diff --git a/linux/crypto/api.c b/linux/crypto/api.c
index 2d24630e00ed6169ca938594197b016247722e15..63efee309ee7acb3dd9cbcf4555cf759ea8f4a56 100644 (file)
--- a/linux/crypto/api.c
+++ b/linux/crypto/api.c
@@ -201,3 +201,36 @@ int crypto_register_alg(struct crypto_alg *alg)
 
        return 0;
 }
+
+/* skcipher: */
+
+static int crypto_skcipher_init_tfm(struct crypto_tfm *tfm)
+{
+       struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
+       struct skcipher_alg *alg = crypto_skcipher_alg(skcipher);
+
+       skcipher->setkey = alg->setkey;
+       skcipher->encrypt = alg->encrypt;
+       skcipher->decrypt = alg->decrypt;
+       skcipher->ivsize = alg->ivsize;
+       skcipher->keysize = alg->max_keysize;
+
+       if (alg->init)
+               return alg->init(skcipher);
+
+       return 0;
+}
+
+static const struct crypto_type crypto_skcipher_type2 = {
+       .extsize        = crypto_alg_extsize,
+       .init_tfm       = crypto_skcipher_init_tfm,
+       .maskclear      = ~CRYPTO_ALG_TYPE_MASK,
+       .maskset        = CRYPTO_ALG_TYPE_BLKCIPHER_MASK,
+       .tfmsize        = offsetof(struct crypto_skcipher, base),
+};
+
+struct crypto_skcipher *crypto_alloc_skcipher(const char *alg_name,
+                                             u32 type, u32 mask)
+{
+       return crypto_alloc_tfm(alg_name, &crypto_skcipher_type2, type, mask);
+}