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crypto: kpp - constify buffer passed to crypto_kpp_set_secret()

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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>
This commit is contained in:
Eric Biggers 2017-02-24 15:46:58 -08:00 committed by Herbert Xu
parent cd220ae6c7
commit 5527dfb6dd
4 changed files with 8 additions and 6 deletions
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3
crypto/dh.c
View File

@ -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;

3
crypto/ecdh.c
View File

@ -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;

2
drivers/crypto/qat/qat_common/qat_asym_algs.c
View File

@ -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);

6
include/crypto/kpp.h
View File

@ -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);