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Date: Wed, 27 Jan 2016 17:08:38 +0800
From: Rui Wang <rui.y.wang@...el.com>
To: herbert@...dor.apana.org.au
Cc: tim.c.chen@...ux.intel.com, rui.y.wang@...el.com,
linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/4] crypto: testmgr - Add a test case for import()/export()
Modify __test_hash() so that hash import/export can be tested
from within the kernel by simply adding .partial = 1 to a hash
algo's struct hash_testvec where .np > 1.
v2: Leverage template[i].np as suggested by Tim Chen
Signed-off-by: Rui Wang <rui.y.wang@...el.com>
---
crypto/testmgr.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
crypto/testmgr.h | 4 +-
2 files changed, 140 insertions(+), 1 deletion(-)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index ae8c57fd..3d0c65a 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -198,6 +198,62 @@ static int wait_async_op(struct tcrypt_result *tr, int ret)
return ret;
}
+static int ahash_partial_update(struct ahash_request **preq,
+ struct crypto_ahash *tfm, struct hash_testvec *template,
+ void *hash_buff, int k, int temp, struct scatterlist *sg,
+ const char *algo, char *result, struct tcrypt_result *tresult)
+{
+ char *state;
+ struct ahash_request *req;
+ int statesize, ret = -EINVAL;
+
+ req = *preq;
+ statesize = crypto_ahash_statesize(
+ crypto_ahash_reqtfm(req));
+ state = kmalloc(statesize, GFP_KERNEL);
+ if (!state) {
+ pr_err("alt: hash: Failed to alloc state for %s\n", algo);
+ ahash_request_free(req);
+ goto out_nostate;
+ }
+ ret = crypto_ahash_export(req, state);
+ if (ret) {
+ pr_err("alt: hash: Failed to export() for %s\n", algo);
+ goto out;
+ }
+ ahash_request_free(req);
+ req = ahash_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ pr_err("alg: hash: Failed to alloc request for %s\n", algo);
+ goto out_noreq;
+ }
+ ahash_request_set_callback(req,
+ CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, tresult);
+
+ memcpy(hash_buff, template->plaintext + temp,
+ template->tap[k]);
+ sg_init_one(&sg[0], hash_buff, template->tap[k]);
+ ahash_request_set_crypt(req, sg, result, template->tap[k]);
+ ret = crypto_ahash_import(req, state);
+ if (ret) {
+ pr_err("alg: hash: Failed to import() for %s\n", algo);
+ goto out;
+ }
+ ret = wait_async_op(tresult, crypto_ahash_update(req));
+ if (ret)
+ goto out;
+ *preq = req;
+ ret = 0;
+ goto out_noreq;
+out:
+ ahash_request_free(req);
+out_noreq:
+ kfree(state);
+out_nostate:
+ return ret;
+}
+
static int __test_hash(struct crypto_ahash *tfm, struct hash_testvec *template,
unsigned int tcount, bool use_digest,
const int align_offset)
@@ -385,6 +441,87 @@ static int __test_hash(struct crypto_ahash *tfm, struct hash_testvec *template,
}
}
+ /* partial update exercise */
+ j = 0;
+ for (i = 0; i < tcount; i++) {
+ /* alignment tests are only done with continuous buffers */
+ if (align_offset != 0)
+ break;
+
+ if (template[i].np < 2)
+ continue;
+
+ if (!template[i].partial)
+ continue;
+
+ j++;
+ memset(result, 0, MAX_DIGEST_SIZE);
+
+ ret = -EINVAL;
+ hash_buff = xbuf[0];
+ memcpy(hash_buff, template[i].plaintext,
+ template[i].tap[0]);
+ sg_init_one(&sg[0], hash_buff, template[i].tap[0]);
+
+ if (template[i].ksize) {
+ crypto_ahash_clear_flags(tfm, ~0);
+ if (template[i].ksize > MAX_KEYLEN) {
+ pr_err("alg: hash: setkey failed on test %d for %s: key size %d > %d\n",
+ j, algo, template[i].ksize, MAX_KEYLEN);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(key, template[i].key, template[i].ksize);
+ ret = crypto_ahash_setkey(tfm, key, template[i].ksize);
+ if (ret) {
+ pr_err("alg: hash: setkey failed on test %d for %s: ret=%d\n",
+ j, algo, -ret);
+ goto out;
+ }
+ }
+
+ ahash_request_set_crypt(req, sg, result, template[i].tap[0]);
+ ret = wait_async_op(&tresult, crypto_ahash_init(req));
+ if (ret) {
+ pr_err("alt: hash: init failed on test %d for %s: ret=%d\n",
+ j, algo, -ret);
+ goto out;
+ }
+ ret = wait_async_op(&tresult, crypto_ahash_update(req));
+ if (ret) {
+ pr_err("alt: hash: update failed on test %d for %s: ret=%d\n",
+ j, algo, -ret);
+ goto out;
+ }
+
+ temp = template[i].tap[0];
+ for (k = 1; k < template[i].np; k++) {
+ ret = ahash_partial_update(&req, tfm, &template[i],
+ hash_buff, k, temp, &sg[0], algo, result,
+ &tresult);
+ if (ret) {
+ pr_err("hash: partial update failed on test %d for %s: ret=%d\n",
+ j, algo, -ret);
+ goto out_noreq;
+ }
+ temp += template[i].tap[k];
+ }
+ ret = wait_async_op(&tresult, crypto_ahash_final(req));
+ if (ret) {
+ pr_err("alt: hash: final failed on test %d for %s: ret=%d\n",
+ j, algo, -ret);
+ goto out;
+ }
+ if (memcmp(result, template[i].digest,
+ crypto_ahash_digestsize(tfm))) {
+ pr_err("alg: hash: Partial Test %d failed for %s\n",
+ j, algo);
+ hexdump(result, crypto_ahash_digestsize(tfm));
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
ret = 0;
out:
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index da0a8fd..451e7eb 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -44,6 +44,7 @@ struct hash_testvec {
unsigned short psize;
unsigned char np;
unsigned char ksize;
+ unsigned char partial;
};
/*
@@ -772,7 +773,8 @@ static struct hash_testvec sha1_tv_template[] = {
.digest = "\x97\x01\x11\xc4\xe7\x7b\xcc\x88\xcc\x20"
"\x45\x9c\x02\xb6\x9b\x4a\xa8\xf5\x82\x17",
.np = 4,
- .tap = { 63, 64, 31, 5 }
+ .tap = { 63, 64, 31, 5 },
+ .partial = 1,
}, {
.plaintext = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-",
.psize = 64,
--
1.8.3.1
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