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authorTudor-Dan Ambarus <tudor.ambarus@microchip.com>2017-05-25 10:18:16 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-06-10 12:04:31 +0800
commit543de102e3316983119462c2821b76648ac3e744 (patch)
tree5a81dfedc5bfb787e90bf9b2d7ec15284aab40cf /crypto
parent515c4d27d69acf0473157abeb21a2ae9f9328bac (diff)
downloadlinux-543de102e3316983119462c2821b76648ac3e744.tar.bz2
crypto: pkcs1pad - comply with crypto_akcipher_maxsize()
crypto_akcipher_maxsize() asks for the output buffer size without caring for errors. It allways assume that will be called after a valid setkey. Comply with it and return what he wants. crypto_akcipher_maxsize() now returns an unsigned int. Remove the unnecessary check. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/rsa-pkcs1pad.c10
1 files changed, 2 insertions, 8 deletions
diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c
index 8baab4307f7b..044bcfa69cba 100644
--- a/crypto/rsa-pkcs1pad.c
+++ b/crypto/rsa-pkcs1pad.c
@@ -120,9 +120,6 @@ static int pkcs1pad_set_pub_key(struct crypto_akcipher *tfm, const void *key,
/* Find out new modulus size from rsa implementation */
err = crypto_akcipher_maxsize(ctx->child);
- if (err < 0)
- return err;
-
if (err > PAGE_SIZE)
return -ENOTSUPP;
@@ -144,9 +141,6 @@ static int pkcs1pad_set_priv_key(struct crypto_akcipher *tfm, const void *key,
/* Find out new modulus size from rsa implementation */
err = crypto_akcipher_maxsize(ctx->child);
- if (err < 0)
- return err;
-
if (err > PAGE_SIZE)
return -ENOTSUPP;
@@ -154,7 +148,7 @@ static int pkcs1pad_set_priv_key(struct crypto_akcipher *tfm, const void *key,
return 0;
}
-static int pkcs1pad_get_max_size(struct crypto_akcipher *tfm)
+static unsigned int pkcs1pad_get_max_size(struct crypto_akcipher *tfm)
{
struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm);
@@ -164,7 +158,7 @@ static int pkcs1pad_get_max_size(struct crypto_akcipher *tfm)
* decrypt/verify.
*/
- return ctx->key_size ?: -EINVAL;
+ return ctx->key_size;
}
static void pkcs1pad_sg_set_buf(struct scatterlist *sg, void *buf, size_t len,