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authorEric Biggers <ebiggers@google.com>2017-02-24 15:46:58 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2017-03-09 18:34:27 +0800
commit5527dfb6ddac2aac98c2939f27840cb47abd5693 (patch)
tree5a898221ea9be92a0c8c93a6b5a5375b79da259c
parentcd220ae6c7fbb0c80c3301e011e1baf4f352e497 (diff)
crypto: kpp - constify buffer passed to crypto_kpp_set_secret()
Constify the buffer passed to crypto_kpp_set_secret() and kpp_alg.set_secret, since it is never modified. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--crypto/dh.c3
-rw-r--r--crypto/ecdh.c3
-rw-r--r--drivers/crypto/qat/qat_common/qat_asym_algs.c2
-rw-r--r--include/crypto/kpp.h6
4 files changed, 8 insertions, 6 deletions
diff --git a/crypto/dh.c b/crypto/dh.c
index ddcb528ab2cc..87e3542cf1b8 100644
--- a/crypto/dh.c
+++ b/crypto/dh.c
@@ -79,7 +79,8 @@ static int dh_set_params(struct dh_ctx *ctx, struct dh *params)
return 0;
}
-static int dh_set_secret(struct crypto_kpp *tfm, void *buf, unsigned int len)
+static int dh_set_secret(struct crypto_kpp *tfm, const void *buf,
+ unsigned int len)
{
struct dh_ctx *ctx = dh_get_ctx(tfm);
struct dh params;
diff --git a/crypto/ecdh.c b/crypto/ecdh.c
index 3de289806d67..63ca33771e4e 100644
--- a/crypto/ecdh.c
+++ b/crypto/ecdh.c
@@ -38,7 +38,8 @@ static unsigned int ecdh_supported_curve(unsigned int curve_id)
}
}
-static int ecdh_set_secret(struct crypto_kpp *tfm, void *buf, unsigned int len)
+static int ecdh_set_secret(struct crypto_kpp *tfm, const void *buf,
+ unsigned int len)
{
struct ecdh_ctx *ctx = ecdh_get_ctx(tfm);
struct ecdh params;
diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c
index 0d35dca2e925..2aab80bc241f 100644
--- a/drivers/crypto/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -491,7 +491,7 @@ static void qat_dh_clear_ctx(struct device *dev, struct qat_dh_ctx *ctx)
ctx->g2 = false;
}
-static int qat_dh_set_secret(struct crypto_kpp *tfm, void *buf,
+static int qat_dh_set_secret(struct crypto_kpp *tfm, const void *buf,
unsigned int len)
{
struct qat_dh_ctx *ctx = kpp_tfm_ctx(tfm);
diff --git a/include/crypto/kpp.h b/include/crypto/kpp.h
index 4307a2f2365f..ce8e1f79374b 100644
--- a/include/crypto/kpp.h
+++ b/include/crypto/kpp.h
@@ -74,7 +74,7 @@ struct crypto_kpp {
* @base: Common crypto API algorithm data structure
*/
struct kpp_alg {
- int (*set_secret)(struct crypto_kpp *tfm, void *buffer,
+ int (*set_secret)(struct crypto_kpp *tfm, const void *buffer,
unsigned int len);
int (*generate_public_key)(struct kpp_request *req);
int (*compute_shared_secret)(struct kpp_request *req);
@@ -273,8 +273,8 @@ struct kpp_secret {
*
* Return: zero on success; error code in case of error
*/
-static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm, void *buffer,
- unsigned int len)
+static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
+ const void *buffer, unsigned int len)
{
struct kpp_alg *alg = crypto_kpp_alg(tfm);