Thread (11 messages) 11 messages, 2 authors, 2020-07-13

[PATCH v5 5/8] crypto: testmgr - support test with different ciphertext per encryption

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STALE2281d

From: Tianjia Zhang <hidden>
Date: 2020-07-09 08:40:31
Also in: keyrings, linux-arm-kernel, linux-crypto, linux-security-module, lkml
Subsystem: crypto api, the rest · Maintainers: Herbert Xu, "David S. Miller", Linus Torvalds

Revision v5 of 6 in this series.

Revisions (6)
  1. v2 [diff vs current]
  2. v3 [diff vs current]
  3. v4 [diff vs current]
  4. v5 current
  5. v6 [diff vs current]
  6. v7 [diff vs current]
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 <redacted>
---
 crypto/testmgr.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 6863f911fcee..0dc94461c437 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;
-- 
2.17.1
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