Patch "crypto: skcipher - Add crypto_skcipher_has_setkey" has been added to the 4.3-stable tree

This is a note to let you know that I've just added the patch titled

crypto: skcipher - Add crypto_skcipher_has_setkey

to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
crypto-skcipher-add-crypto_skcipher_has_setkey.patch
and it can be found in the queue-4.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Herbert Xu <[email protected]>
Date: Mon, 11 Jan 2016 21:26:50 +0800
Subject: crypto: skcipher - Add crypto_skcipher_has_setkey

From: Herbert Xu <[email protected]>

commit a1383cd86a062fc798899ab20f0ec2116cce39cb upstream.

This patch adds a way for skcipher users to determine whether a key is required by a transform.

---
 crypto/skcipher.c         |    2 ++
 include/crypto/skcipher.h |    7 +++++++
 2 files changed, 9 insertions(+)

@@ -118,6 +118,7 @@ int crypto_init_skcipher_ops_blkcipher(s
 	skcipher->decrypt = skcipher_decrypt_blkcipher;
 
 	skcipher->ivsize = crypto_blkcipher_ivsize(blkcipher);
+	skcipher->has_setkey = calg->cra_blkcipher.max_keysize;
 
 	return 0;
 }

@@ -210,6 +211,7 @@ int crypto_init_skcipher_ops_ablkcipher(
 	skcipher->ivsize = crypto_ablkcipher_ivsize(ablkcipher);
 	skcipher->reqsize = crypto_ablkcipher_reqsize(ablkcipher) +
 			    sizeof(struct ablkcipher_request);
+	skcipher->has_setkey = calg->cra_ablkcipher.max_keysize;
 
 	return 0;
 }

@@ -61,6 +61,8 @@ struct crypto_skcipher {
 	unsigned int ivsize;
 	unsigned int reqsize;
 
+	bool has_setkey;
+
 	struct crypto_tfm base;
 };
 

@@ -305,6 +307,11 @@ static inline int crypto_skcipher_setkey
 	return tfm->setkey(tfm, key, keylen);
 }
 
+static inline bool crypto_skcipher_has_setkey(struct crypto_skcipher *tfm)
+{
+	return tfm->has_setkey;
+}
+
 /**
  * crypto_skcipher_reqtfm() - obtain cipher handle from request
  * @req: skcipher_request out of which the cipher handle is to be obtained

Patches currently in stable-queue which might be from [email protected] are

queue-4.3/crypto-fix-test-vector-for-rsa.patch queue-4.3/crypto-algif_skcipher-use-new-skcipher-interface.patch queue-4.3/crypto-af_alg-disallow-bind-setkey-...-after-accept-2.patch queue-4.3/crypto-crc32c-pclmul-use-.rodata-instead-of-.rotata.patch queue-4.3/crypto-caam-fix-non-block-aligned-hash-calculation.patch queue-4.3/crypto-nx-fix-timing-leak-in-gcm-and-ccm-decryption.patch queue-4.3/crypto-skcipher-copy-iv-from-desc-even-for-0-len-walks.patch queue-4.3/crypto-skcipher-add-crypto_skcipher_has_setkey.patch queue-4.3/crypto-algif_skcipher-add-key-check-exception-for-cipher_null.patch queue-4.3/crypto-algif_skcipher-require-setkey-before-accept-2.patch queue-4.3/crypto-algif_skcipher-add-nokey-compatibility-path.patch queue-4.3/crypto-hash-add-crypto_ahash_has_setkey.patch queue-4.3/crypto-af_alg-add-nokey-compatibility-path.patch queue-4.3/crypto-sun4i-ss-add-missing-statesize.patch queue-4.3/crypto-algif_hash-require-setkey-before-accept-2.patch queue-4.3/crypto-qat-don-t-use-userspace-pointer.patch queue-4.3/crypto-talitos-fix-timing-leak-in-esp-icv-verification.patch queue-4.3/crypto-algif_hash-only-export-and-import-on-sockets-with-data.patch queue-4.3/crypto-af_alg-fix-socket-double-free-when-accept-fails.patch