diff mbox

[11/30] crypto: aead - Add skcipher null for IV generators

Message ID E1bMq4k-0007Qn-SQ@gondolin.me.apana.org.au (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show

Commit Message

Herbert Xu July 12, 2016, 5:17 a.m. UTC 
This patch adds an skcipher null object alongside the existing
null blkcipher so that IV generators using it can switch over
to skcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

 crypto/aead.c                   |   10 +++++++++-
 include/crypto/internal/geniv.h |    1 +
 2 files changed, 10 insertions(+), 1 deletion(-)

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diff mbox

Patch

diff --git a/crypto/aead.c b/crypto/aead.c
index b155cbc..a5d9a83 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -294,10 +294,15 @@  int aead_init_geniv(struct crypto_aead *aead)
 	if (err)
 		goto out;
 
+	ctx->sknull = crypto_get_default_null_skcipher2();
+	err = PTR_ERR(ctx->sknull);
+	if (IS_ERR(ctx->sknull))
+		goto out;
+
 	ctx->null = crypto_get_default_null_skcipher();
 	err = PTR_ERR(ctx->null);
 	if (IS_ERR(ctx->null))
-		goto out;
+		goto drop_sknull;
 
 	child = crypto_spawn_aead(aead_instance_ctx(inst));
 	err = PTR_ERR(child);
@@ -315,6 +320,8 @@  out:
 
 drop_null:
 	crypto_put_default_null_skcipher();
+drop_sknull:
+	crypto_put_default_null_skcipher2();
 	goto out;
 }
 EXPORT_SYMBOL_GPL(aead_init_geniv);
@@ -325,6 +332,7 @@  void aead_exit_geniv(struct crypto_aead *tfm)
 
 	crypto_free_aead(ctx->child);
 	crypto_put_default_null_skcipher();
+	crypto_put_default_null_skcipher2();
 }
 EXPORT_SYMBOL_GPL(aead_exit_geniv);
 
diff --git a/include/crypto/internal/geniv.h b/include/crypto/internal/geniv.h
index 5933363..e8447c9 100644
--- a/include/crypto/internal/geniv.h
+++ b/include/crypto/internal/geniv.h
@@ -21,6 +21,7 @@  struct aead_geniv_ctx {
 	spinlock_t lock;
 	struct crypto_aead *child;
 	struct crypto_blkcipher *null;
+	struct crypto_skcipher *sknull;
 	u8 salt[] __attribute__ ((aligned(__alignof__(u32))));
 };