crypto: rsa - unimplement sign/verify for raw RSA backends

In preparation for new akcipher verify call remove sign/verify callbacks
from RSA backends and make PKCS1 driver call encrypt/decrypt instead.

This also complies with the well-known idea that raw RSA should never be
used for sign/verify. It only should be used with proper padding scheme
such as PKCS1 driver provides.

Cc: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Cc: qat-linux@intel.com
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gary Hook <gary.hook@amd.com>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Aymen Sghaier <aymen.sghaier@nxp.com>
Signed-off-by: Vitaly Chikunov <vt@altlinux.org>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Acked-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 2 insertions, 2 deletions

diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c
index 0a6680ca8cb6..94382fa2c6ac 100644
--- a/crypto/rsa-pkcs1pad.c
+++ b/crypto/rsa-pkcs1pad.c
@@ -429,7 +429,7 @@ static int pkcs1pad_sign(struct akcipher_request *req)
         akcipher_request_set_crypt(&req_ctx->child_req, req_ctx->in_sg,
                                    req->dst, ctx->key_size - 1, req->dst_len);
 
-        err = crypto_akcipher_sign(&req_ctx->child_req);
+        err = crypto_akcipher_decrypt(&req_ctx->child_req);
         if (err != -EINPROGRESS && err != -EBUSY)
                 return pkcs1pad_encrypt_sign_complete(req, err);
 
@@ -551,7 +551,7 @@ static int pkcs1pad_verify(struct akcipher_request *req)
                                    req_ctx->out_sg, req->src_len,
                                    ctx->key_size);
 
-        err = crypto_akcipher_verify(&req_ctx->child_req);
+        err = crypto_akcipher_encrypt(&req_ctx->child_req);
         if (err != -EINPROGRESS && err != -EBUSY)
                 return pkcs1pad_verify_complete(req, err);