From 973fb3fb50e3959d90179d09ed3ce454dd7bc6e4 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 21 Jan 2016 17:10:56 +0800 Subject: crypto: skcipher - Add default key size helper While converting ecryptfs over to skcipher I found that it needs to pick a default key size if one isn't given. Rather than having it poke into the guts of the algorithm to get max_keysize, let's provide a helper that is meant to give a sane default (just in case we ever get an algorithm that has no maximum key size). Signed-off-by: Herbert Xu --- include/crypto/skcipher.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/crypto') diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h index fd8742a..2f07b4f 100644 --- a/include/crypto/skcipher.h +++ b/include/crypto/skcipher.h @@ -60,8 +60,7 @@ struct crypto_skcipher { unsigned int ivsize; unsigned int reqsize; - - bool has_setkey; + unsigned int keysize; struct crypto_tfm base; }; @@ -309,7 +308,13 @@ static inline int crypto_skcipher_setkey(struct crypto_skcipher *tfm, static inline bool crypto_skcipher_has_setkey(struct crypto_skcipher *tfm) { - return tfm->has_setkey; + return tfm->keysize; +} + +static inline unsigned int crypto_skcipher_default_keysize( + struct crypto_skcipher *tfm) +{ + return tfm->keysize; } /** -- cgit v1.1