From e44a1b44c3a9794236fe038b89a0fbef5adcd523 Mon Sep 17 00:00:00 2001
From: Jarod Wilson <jarod@redhat.com>
Date: Mon, 4 May 2009 19:22:11 +0800
Subject: [PATCH] crypto: testmgr - Handle AEAD test vectors expected to fail
 verification

Add infrastructure to tcrypt/testmgr to support handling ccm decryption
test vectors that are expected to fail verification.

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 crypto/testmgr.c | 28 ++++++++++++++++++++++++++++
 crypto/testmgr.h |  1 +
 2 files changed, 29 insertions(+)

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index bfee6e9f642dd8..84f96401b29a65 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -363,6 +363,16 @@ static int test_aead(struct crypto_aead *tfm, int enc,
 
 			switch (ret) {
 			case 0:
+				if (template[i].novrfy) {
+					/* verification was supposed to fail */
+					printk(KERN_ERR "alg: aead: %s failed "
+					       "on test %d for %s: ret was 0, "
+					       "expected -EBADMSG\n",
+					       e, j, algo);
+					/* so really, we got a bad message */
+					ret = -EBADMSG;
+					goto out;
+				}
 				break;
 			case -EINPROGRESS:
 			case -EBUSY:
@@ -372,6 +382,10 @@ static int test_aead(struct crypto_aead *tfm, int enc,
 					INIT_COMPLETION(result.completion);
 					break;
 				}
+			case -EBADMSG:
+				if (template[i].novrfy)
+					/* verification failure was expected */
+					continue;
 				/* fall through */
 			default:
 				printk(KERN_ERR "alg: aead: %s failed on test "
@@ -481,6 +495,16 @@ static int test_aead(struct crypto_aead *tfm, int enc,
 
 			switch (ret) {
 			case 0:
+				if (template[i].novrfy) {
+					/* verification was supposed to fail */
+					printk(KERN_ERR "alg: aead: %s failed "
+					       "on chunk test %d for %s: ret "
+					       "was 0, expected -EBADMSG\n",
+					       e, j, algo);
+					/* so really, we got a bad message */
+					ret = -EBADMSG;
+					goto out;
+				}
 				break;
 			case -EINPROGRESS:
 			case -EBUSY:
@@ -490,6 +514,10 @@ static int test_aead(struct crypto_aead *tfm, int enc,
 					INIT_COMPLETION(result.completion);
 					break;
 				}
+			case -EBADMSG:
+				if (template[i].novrfy)
+					/* verification failure was expected */
+					continue;
 				/* fall through */
 			default:
 				printk(KERN_ERR "alg: aead: %s failed on "
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 526f00a9c72feb..b77b61dad2621c 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -62,6 +62,7 @@ struct aead_testvec {
 	int np;
 	int anp;
 	unsigned char fail;
+	unsigned char novrfy;	/* ccm dec verification failure expected */
 	unsigned char wk; /* weak key flag */
 	unsigned char klen;
 	unsigned short ilen;