Hi Andrew,
On 09/05/2015 04:00 PM, Andrew Zaborowski wrote:
> +static int crypto_akcipher_init(struct crypto_tfm *tfm, u32 type, u32 mask)
> +{
> + return 0;
> +}
> +
This is not needed I think.
>
> +static int pkcs1pad_decrypt_complete(struct akcipher_request *req, int err)
> +{
> + struct akcipher_request *child_req = akcipher_request_ctx(req);
> + int pos;
> + uint8_t *dst = child_req->dst;
> +
> + BUG_ON(err == -EOVERFLOW);
> +
> + if (err)
> + goto done;
> +
> + if (dst[0] != 0x00) {
> + err = -EINVAL;
> + goto done;
> + }
This won't work I'm afraid, because MPI strips all leading zeors.
> + if (dst[1] != 0x02) {
> + err = -EINVAL;
> + goto done;
> + }
>
> +static int pkcs1pad_verify_complete(struct akcipher_request *req, int err)
> +{
> + struct akcipher_request *child_req = akcipher_request_ctx(req);
> + int pos;
> + uint8_t *dst = child_req->dst;
> +
> + BUG_ON(err == -EOVERFLOW);
> +
> + if (err)
> + goto done;
> +
> + if (dst[0] != 0x00) {
> + err = -EINVAL;
> + goto done;
> + }
same here the zero will be stripped off.
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