[PATCH v7 05/10] crypto: testmgr - support test with different ciphertext per encryption

[Tianjia Zhang]

Some asymmetric algorithms will get different ciphertext after
each encryption, such as SM2, and let testmgr support the testing
of such algorithms.

In struct akcipher_testvec, set c and c_size to be empty, skip
the comparison of the ciphertext, and compare the decrypted
plaintext with m to achieve the test purpose.

Signed-off-by: Tianjia Zhang <tianjia.zh...@linux.alibaba.com>
Tested-by: Xufeng Zhang <yunbo.xuf...@linux.alibaba.com>
---
 crypto/testmgr.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 23c27fc96394..cd002a030af5 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -4025,7 +4025,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm,
                pr_err("alg: akcipher: %s test failed. err %d\n", op, err);
                goto free_all;
        }
-       if (!vecs->siggen_sigver_test) {
+       if (!vecs->siggen_sigver_test && c) {
                if (req->dst_len != c_size) {
                        pr_err("alg: akcipher: %s test failed. Invalid output 
len\n",
                               op);
@@ -4056,6 +4056,11 @@ static int test_akcipher_one(struct crypto_akcipher *tfm,
                goto free_all;
        }
 
+       if (!vecs->siggen_sigver_test && !c) {
+               c = outbuf_enc;
+               c_size = req->dst_len;
+       }
+
        op = vecs->siggen_sigver_test ? "sign" : "decrypt";
        if (WARN_ON(c_size > PAGE_SIZE))
                goto free_all;
-- 
2.19.1.3.ge56e4f7