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crypto: testmgr - Add a test case for import()/export() 

Modify __test_hash() so that hash import/export can be tested
from within the kernel. The test is unconditionally done when
a struct hash_testvec has its .np > 1.

v3: make the test unconditional
v2: Leverage template[i].np as suggested by Tim Chen

Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Wang, Rui Y 2016-02-03 18:26:57 +08:00 committed by Herbert Xu
parent 1e0a6e1747
commit 018ba95c71
1 changed files with 133 additions and 0 deletions
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133
crypto/testmgr.c
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@ -190,6 +190,61 @@ 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);
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)
@ -377,6 +432,84 @@ 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;
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: