crypto: ecdh - comply with crypto_kpp_maxsize()
crypto_kpp_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. nbytes has no sense now, remove it and directly return the maxsize. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
parent
7f69105077
commit
d0efb48b86
@ -104,13 +104,12 @@ static int ecdh_compute_value(struct kpp_request *req)
|
|||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int ecdh_max_size(struct crypto_kpp *tfm)
|
static unsigned int ecdh_max_size(struct crypto_kpp *tfm)
|
||||||
{
|
{
|
||||||
struct ecdh_ctx *ctx = ecdh_get_ctx(tfm);
|
struct ecdh_ctx *ctx = ecdh_get_ctx(tfm);
|
||||||
int nbytes = ctx->ndigits << ECC_DIGITS_TO_BYTES_SHIFT;
|
|
||||||
|
|
||||||
/* Public key is made of two coordinates */
|
/* Public key is made of two coordinates, add one to the left shift */
|
||||||
return 2 * nbytes;
|
return ctx->ndigits << (ECC_DIGITS_TO_BYTES_SHIFT + 1);
|
||||||
}
|
}
|
||||||
|
|
||||||
static void no_exit_tfm(struct crypto_kpp *tfm)
|
static void no_exit_tfm(struct crypto_kpp *tfm)
|
||||||
|
Loading…
Reference in New Issue
Block a user