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testmgr.c
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testmgr.c
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/*
* Algorithm testing framework and tests.
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
* Copyright (c) 2002 Jean-Francois Dive <jef@linuxbe.org>
* Copyright (c) 2007 Nokia Siemens Networks
* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
*
* Updated RFC4106 AES-GCM testing.
* Authors: Aidan O'Mahony (aidan.o.mahony@intel.com)
* Adrian Hoban <adrian.hoban@intel.com>
* Gabriele Paoloni <gabriele.paoloni@intel.com>
* Tadeusz Struk (tadeusz.struk@intel.com)
* Copyright (c) 2010, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
*/
#include <crypto/hash.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <crypto/rng.h>
#include <crypto/drbg.h>
#include "internal.h"
#ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
/* a perfect nop */
int alg_test(const char *driver, const char *alg, u32 type, u32 mask)
{
return 0;
}
#else
#include "testmgr.h"
/*
* Need slab memory for testing (size in number of pages).
*/
#define XBUFSIZE 8
/*
* Indexes into the xbuf to simulate cross-page access.
*/
#define IDX1 32
#define IDX2 32400
#define IDX3 1
#define IDX4 8193
#define IDX5 22222
#define IDX6 17101
#define IDX7 27333
#define IDX8 3000
/*
* Used by test_cipher()
*/
#define ENCRYPT 1
#define DECRYPT 0
struct tcrypt_result {
struct completion completion;
int err;
};
struct aead_test_suite {
struct {
struct aead_testvec *vecs;
unsigned int count;
} enc, dec;
};
struct cipher_test_suite {
struct {
struct cipher_testvec *vecs;
unsigned int count;
} enc, dec;
};
struct comp_test_suite {
struct {
struct comp_testvec *vecs;
unsigned int count;
} comp, decomp;
};
struct pcomp_test_suite {
struct {
struct pcomp_testvec *vecs;
unsigned int count;
} comp, decomp;
};
struct hash_test_suite {
struct hash_testvec *vecs;
unsigned int count;
};
struct cprng_test_suite {
struct cprng_testvec *vecs;
unsigned int count;
};
struct drbg_test_suite {
struct drbg_testvec *vecs;
unsigned int count;
};
struct alg_test_desc {
const char *alg;
int (*test)(const struct alg_test_desc *desc, const char *driver,
u32 type, u32 mask);
int fips_allowed; /* set if alg is allowed in fips mode */
union {
struct aead_test_suite aead;
struct cipher_test_suite cipher;
struct comp_test_suite comp;
struct pcomp_test_suite pcomp;
struct hash_test_suite hash;
struct cprng_test_suite cprng;
struct drbg_test_suite drbg;
} suite;
};
static unsigned int IDX[8] = { IDX1, IDX2, IDX3, IDX4, IDX5, IDX6, IDX7, IDX8 };
static void hexdump(unsigned char *buf, unsigned int len)
{
print_hex_dump(KERN_CONT, "", DUMP_PREFIX_OFFSET,
16, 1,
buf, len, false);
}
static void tcrypt_complete(struct crypto_async_request *req, int err)
{
struct tcrypt_result *res = req->data;
if (err == -EINPROGRESS)
return;
res->err = err;
complete(&res->completion);
}
static int testmgr_alloc_buf(char *buf[XBUFSIZE])
{
int i;
for (i = 0; i < XBUFSIZE; i++) {
buf[i] = (void *)__get_free_page(GFP_KERNEL);
if (!buf[i])
goto err_free_buf;
}
return 0;
err_free_buf:
while (i-- > 0)
free_page((unsigned long)buf[i]);
return -ENOMEM;
}
static void testmgr_free_buf(char *buf[XBUFSIZE])
{
int i;
for (i = 0; i < XBUFSIZE; i++)
free_page((unsigned long)buf[i]);
}
static int wait_async_op(struct tcrypt_result *tr, int ret)
{
if (ret == -EINPROGRESS || ret == -EBUSY) {
ret = wait_for_completion_interruptible(&tr->completion);
if (!ret)
ret = tr->err;
reinit_completion(&tr->completion);
}
return ret;
}
static int __test_hash(struct crypto_ahash *tfm, struct hash_testvec *template,
unsigned int tcount, bool use_digest,
const int align_offset)
{
const char *algo = crypto_tfm_alg_driver_name(crypto_ahash_tfm(tfm));
unsigned int i, j, k, temp;
struct scatterlist sg[8];
char *result;
char *key;
struct ahash_request *req;
struct tcrypt_result tresult;
void *hash_buff;
char *xbuf[XBUFSIZE];
int ret = -ENOMEM;
result = kmalloc(MAX_DIGEST_SIZE, GFP_KERNEL);
if (!result)
return ret;
key = kmalloc(MAX_KEYLEN, GFP_KERNEL);
if (!key)
goto out_nobuf;
if (testmgr_alloc_buf(xbuf))
goto out_nobuf;
init_completion(&tresult.completion);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
printk(KERN_ERR "alg: hash: Failed to allocate request for "
"%s\n", algo);
goto out_noreq;
}
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
tcrypt_complete, &tresult);
j = 0;
for (i = 0; i < tcount; i++) {
if (template[i].np)
continue;
ret = -EINVAL;
if (WARN_ON(align_offset + template[i].psize > PAGE_SIZE))
goto out;
j++;
memset(result, 0, MAX_DIGEST_SIZE);
hash_buff = xbuf[0];
hash_buff += align_offset;
memcpy(hash_buff, template[i].plaintext, template[i].psize);
sg_init_one(&sg[0], hash_buff, template[i].psize);
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) {
printk(KERN_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].psize);
if (use_digest) {
ret = wait_async_op(&tresult, crypto_ahash_digest(req));
if (ret) {
pr_err("alg: hash: digest failed on test %d "
"for %s: ret=%d\n", j, algo, -ret);
goto out;
}
} else {
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;
}
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))) {
printk(KERN_ERR "alg: hash: Test %d failed for %s\n",
j, algo);
hexdump(result, crypto_ahash_digestsize(tfm));
ret = -EINVAL;
goto out;
}
}
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)
continue;
j++;
memset(result, 0, MAX_DIGEST_SIZE);
temp = 0;
sg_init_table(sg, template[i].np);
ret = -EINVAL;
for (k = 0; k < template[i].np; k++) {
if (WARN_ON(offset_in_page(IDX[k]) +
template[i].tap[k] > PAGE_SIZE))
goto out;
sg_set_buf(&sg[k],
memcpy(xbuf[IDX[k] >> PAGE_SHIFT] +
offset_in_page(IDX[k]),
template[i].plaintext + temp,
template[i].tap[k]),
template[i].tap[k]);
temp += template[i].tap[k];
}
if (template[i].ksize) {
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;
}
crypto_ahash_clear_flags(tfm, ~0);
memcpy(key, template[i].key, template[i].ksize);
ret = crypto_ahash_setkey(tfm, key, template[i].ksize);
if (ret) {
printk(KERN_ERR "alg: hash: setkey "
"failed on chunking test %d "
"for %s: ret=%d\n", j, algo, -ret);
goto out;
}
}
ahash_request_set_crypt(req, sg, result, template[i].psize);
ret = crypto_ahash_digest(req);
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&tresult.completion);
if (!ret && !(ret = tresult.err)) {
reinit_completion(&tresult.completion);
break;
}
/* fall through */
default:
printk(KERN_ERR "alg: hash: digest failed "
"on chunking test %d for %s: "
"ret=%d\n", j, algo, -ret);
goto out;
}
if (memcmp(result, template[i].digest,
crypto_ahash_digestsize(tfm))) {
printk(KERN_ERR "alg: hash: Chunking test %d "
"failed for %s\n", j, algo);
hexdump(result, crypto_ahash_digestsize(tfm));
ret = -EINVAL;
goto out;
}
}
ret = 0;
out:
ahash_request_free(req);
out_noreq:
testmgr_free_buf(xbuf);
out_nobuf:
kfree(key);
kfree(result);
return ret;
}
static int test_hash(struct crypto_ahash *tfm, struct hash_testvec *template,
unsigned int tcount, bool use_digest)
{
unsigned int alignmask;
int ret;
ret = __test_hash(tfm, template, tcount, use_digest, 0);
if (ret)
return ret;
/* test unaligned buffers, check with one byte offset */
ret = __test_hash(tfm, template, tcount, use_digest, 1);
if (ret)
return ret;
alignmask = crypto_tfm_alg_alignmask(&tfm->base);
if (alignmask) {
/* Check if alignment mask for tfm is correctly set. */
ret = __test_hash(tfm, template, tcount, use_digest,
alignmask + 1);
if (ret)
return ret;
}
return 0;
}
static int __test_aead(struct crypto_aead *tfm, int enc,
struct aead_testvec *template, unsigned int tcount,
const bool diff_dst, const int align_offset)
{
const char *algo = crypto_tfm_alg_driver_name(crypto_aead_tfm(tfm));
unsigned int i, j, k, n, temp;
int ret = -ENOMEM;
char *q;
char *key;
struct aead_request *req;
struct scatterlist *sg;
struct scatterlist *asg;
struct scatterlist *sgout;
const char *e, *d;
struct tcrypt_result result;
unsigned int authsize;
void *input;
void *output;
void *assoc;
char *iv;
char *xbuf[XBUFSIZE];
char *xoutbuf[XBUFSIZE];
char *axbuf[XBUFSIZE];
iv = kzalloc(MAX_IVLEN, GFP_KERNEL);
if (!iv)
return ret;
key = kmalloc(MAX_KEYLEN, GFP_KERNEL);
if (!key)
goto out_noxbuf;
if (testmgr_alloc_buf(xbuf))
goto out_noxbuf;
if (testmgr_alloc_buf(axbuf))
goto out_noaxbuf;
if (diff_dst && testmgr_alloc_buf(xoutbuf))
goto out_nooutbuf;
/* avoid "the frame size is larger than 1024 bytes" compiler warning */
sg = kmalloc(sizeof(*sg) * 8 * (diff_dst ? 3 : 2), GFP_KERNEL);
if (!sg)
goto out_nosg;
asg = &sg[8];
sgout = &asg[8];
if (diff_dst)
d = "-ddst";
else
d = "";
if (enc == ENCRYPT)
e = "encryption";
else
e = "decryption";
init_completion(&result.completion);
req = aead_request_alloc(tfm, GFP_KERNEL);
if (!req) {
pr_err("alg: aead%s: Failed to allocate request for %s\n",
d, algo);
goto out;
}
aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
tcrypt_complete, &result);
for (i = 0, j = 0; i < tcount; i++) {
if (template[i].np)
continue;
j++;
/* some templates have no input data but they will
* touch input
*/
input = xbuf[0];
input += align_offset;
assoc = axbuf[0];
ret = -EINVAL;
if (WARN_ON(align_offset + template[i].ilen >
PAGE_SIZE || template[i].alen > PAGE_SIZE))
goto out;
memcpy(input, template[i].input, template[i].ilen);
memcpy(assoc, template[i].assoc, template[i].alen);
if (template[i].iv)
memcpy(iv, template[i].iv, MAX_IVLEN);
else
memset(iv, 0, MAX_IVLEN);
crypto_aead_clear_flags(tfm, ~0);
if (template[i].wk)
crypto_aead_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY);
if (template[i].klen > MAX_KEYLEN) {
pr_err("alg: aead%s: setkey failed on test %d for %s: key size %d > %d\n",
d, j, algo, template[i].klen,
MAX_KEYLEN);
ret = -EINVAL;
goto out;
}
memcpy(key, template[i].key, template[i].klen);
ret = crypto_aead_setkey(tfm, key, template[i].klen);
if (!ret == template[i].fail) {
pr_err("alg: aead%s: setkey failed on test %d for %s: flags=%x\n",
d, j, algo, crypto_aead_get_flags(tfm));
goto out;
} else if (ret)
continue;
authsize = abs(template[i].rlen - template[i].ilen);
ret = crypto_aead_setauthsize(tfm, authsize);
if (ret) {
pr_err("alg: aead%s: Failed to set authsize to %u on test %d for %s\n",
d, authsize, j, algo);
goto out;
}
if (diff_dst) {
output = xoutbuf[0];
output += align_offset;
sg_init_one(&sg[0], input, template[i].ilen);
sg_init_one(&sgout[0], output, template[i].rlen);
} else {
sg_init_one(&sg[0], input,
template[i].ilen + (enc ? authsize : 0));
output = input;
}
sg_init_one(&asg[0], assoc, template[i].alen);
aead_request_set_crypt(req, sg, (diff_dst) ? sgout : sg,
template[i].ilen, iv);
aead_request_set_assoc(req, asg, template[i].alen);
ret = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
switch (ret) {
case 0:
if (template[i].novrfy) {
/* verification was supposed to fail */
pr_err("alg: aead%s: %s failed on test %d for %s: ret was 0, expected -EBADMSG\n",
d, e, j, algo);
/* so really, we got a bad message */
ret = -EBADMSG;
goto out;
}
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&result.completion);
if (!ret && !(ret = result.err)) {
reinit_completion(&result.completion);
break;
}
case -EBADMSG:
if (template[i].novrfy)
/* verification failure was expected */
continue;
/* fall through */
default:
pr_err("alg: aead%s: %s failed on test %d for %s: ret=%d\n",
d, e, j, algo, -ret);
goto out;
}
q = output;
if (memcmp(q, template[i].result, template[i].rlen)) {
pr_err("alg: aead%s: Test %d failed on %s for %s\n",
d, j, e, algo);
hexdump(q, template[i].rlen);
ret = -EINVAL;
goto out;
}
}
for (i = 0, j = 0; i < tcount; i++) {
/* alignment tests are only done with continuous buffers */
if (align_offset != 0)
break;
if (!template[i].np)
continue;
j++;
if (template[i].iv)
memcpy(iv, template[i].iv, MAX_IVLEN);
else
memset(iv, 0, MAX_IVLEN);
crypto_aead_clear_flags(tfm, ~0);
if (template[i].wk)
crypto_aead_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY);
if (template[i].klen > MAX_KEYLEN) {
pr_err("alg: aead%s: setkey failed on test %d for %s: key size %d > %d\n",
d, j, algo, template[i].klen, MAX_KEYLEN);
ret = -EINVAL;
goto out;
}
memcpy(key, template[i].key, template[i].klen);
ret = crypto_aead_setkey(tfm, key, template[i].klen);
if (!ret == template[i].fail) {
pr_err("alg: aead%s: setkey failed on chunk test %d for %s: flags=%x\n",
d, j, algo, crypto_aead_get_flags(tfm));
goto out;
} else if (ret)
continue;
authsize = abs(template[i].rlen - template[i].ilen);
ret = -EINVAL;
sg_init_table(sg, template[i].np);
if (diff_dst)
sg_init_table(sgout, template[i].np);
for (k = 0, temp = 0; k < template[i].np; k++) {
if (WARN_ON(offset_in_page(IDX[k]) +
template[i].tap[k] > PAGE_SIZE))
goto out;
q = xbuf[IDX[k] >> PAGE_SHIFT] + offset_in_page(IDX[k]);
memcpy(q, template[i].input + temp, template[i].tap[k]);
sg_set_buf(&sg[k], q, template[i].tap[k]);
if (diff_dst) {
q = xoutbuf[IDX[k] >> PAGE_SHIFT] +
offset_in_page(IDX[k]);
memset(q, 0, template[i].tap[k]);
sg_set_buf(&sgout[k], q, template[i].tap[k]);
}
n = template[i].tap[k];
if (k == template[i].np - 1 && enc)
n += authsize;
if (offset_in_page(q) + n < PAGE_SIZE)
q[n] = 0;
temp += template[i].tap[k];
}
ret = crypto_aead_setauthsize(tfm, authsize);
if (ret) {
pr_err("alg: aead%s: Failed to set authsize to %u on chunk test %d for %s\n",
d, authsize, j, algo);
goto out;
}
if (enc) {
if (WARN_ON(sg[k - 1].offset +
sg[k - 1].length + authsize >
PAGE_SIZE)) {
ret = -EINVAL;
goto out;
}
if (diff_dst)
sgout[k - 1].length += authsize;
else
sg[k - 1].length += authsize;
}
sg_init_table(asg, template[i].anp);
ret = -EINVAL;
for (k = 0, temp = 0; k < template[i].anp; k++) {
if (WARN_ON(offset_in_page(IDX[k]) +
template[i].atap[k] > PAGE_SIZE))
goto out;
sg_set_buf(&asg[k],
memcpy(axbuf[IDX[k] >> PAGE_SHIFT] +
offset_in_page(IDX[k]),
template[i].assoc + temp,
template[i].atap[k]),
template[i].atap[k]);
temp += template[i].atap[k];
}
aead_request_set_crypt(req, sg, (diff_dst) ? sgout : sg,
template[i].ilen,
iv);
aead_request_set_assoc(req, asg, template[i].alen);
ret = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
switch (ret) {
case 0:
if (template[i].novrfy) {
/* verification was supposed to fail */
pr_err("alg: aead%s: %s failed on chunk test %d for %s: ret was 0, expected -EBADMSG\n",
d, e, j, algo);
/* so really, we got a bad message */
ret = -EBADMSG;
goto out;
}
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&result.completion);
if (!ret && !(ret = result.err)) {
reinit_completion(&result.completion);
break;
}
case -EBADMSG:
if (template[i].novrfy)
/* verification failure was expected */
continue;
/* fall through */
default:
pr_err("alg: aead%s: %s failed on chunk test %d for %s: ret=%d\n",
d, e, j, algo, -ret);
goto out;
}
ret = -EINVAL;
for (k = 0, temp = 0; k < template[i].np; k++) {
if (diff_dst)
q = xoutbuf[IDX[k] >> PAGE_SHIFT] +
offset_in_page(IDX[k]);
else
q = xbuf[IDX[k] >> PAGE_SHIFT] +
offset_in_page(IDX[k]);
n = template[i].tap[k];
if (k == template[i].np - 1)
n += enc ? authsize : -authsize;
if (memcmp(q, template[i].result + temp, n)) {
pr_err("alg: aead%s: Chunk test %d failed on %s at page %u for %s\n",
d, j, e, k, algo);
hexdump(q, n);
goto out;
}
q += n;
if (k == template[i].np - 1 && !enc) {
if (!diff_dst &&
memcmp(q, template[i].input +
temp + n, authsize))
n = authsize;
else
n = 0;
} else {
for (n = 0; offset_in_page(q + n) && q[n]; n++)
;
}
if (n) {
pr_err("alg: aead%s: Result buffer corruption in chunk test %d on %s at page %u for %s: %u bytes:\n",
d, j, e, k, algo, n);
hexdump(q, n);
goto out;
}
temp += template[i].tap[k];
}
}
ret = 0;
out:
aead_request_free(req);
kfree(sg);
out_nosg:
if (diff_dst)
testmgr_free_buf(xoutbuf);
out_nooutbuf:
testmgr_free_buf(axbuf);
out_noaxbuf:
testmgr_free_buf(xbuf);
out_noxbuf:
kfree(key);
kfree(iv);
return ret;
}
static int test_aead(struct crypto_aead *tfm, int enc,
struct aead_testvec *template, unsigned int tcount)
{
unsigned int alignmask;
int ret;
/* test 'dst == src' case */
ret = __test_aead(tfm, enc, template, tcount, false, 0);
if (ret)
return ret;
/* test 'dst != src' case */
ret = __test_aead(tfm, enc, template, tcount, true, 0);
if (ret)
return ret;
/* test unaligned buffers, check with one byte offset */
ret = __test_aead(tfm, enc, template, tcount, true, 1);
if (ret)
return ret;
alignmask = crypto_tfm_alg_alignmask(&tfm->base);
if (alignmask) {
/* Check if alignment mask for tfm is correctly set. */
ret = __test_aead(tfm, enc, template, tcount, true,
alignmask + 1);
if (ret)
return ret;
}
return 0;
}
static int test_cipher(struct crypto_cipher *tfm, int enc,
struct cipher_testvec *template, unsigned int tcount)
{
const char *algo = crypto_tfm_alg_driver_name(crypto_cipher_tfm(tfm));
unsigned int i, j, k;
char *q;
const char *e;
void *data;
char *xbuf[XBUFSIZE];
int ret = -ENOMEM;
if (testmgr_alloc_buf(xbuf))
goto out_nobuf;
if (enc == ENCRYPT)
e = "encryption";
else
e = "decryption";
j = 0;
for (i = 0; i < tcount; i++) {
if (template[i].np)
continue;
j++;
ret = -EINVAL;
if (WARN_ON(template[i].ilen > PAGE_SIZE))
goto out;
data = xbuf[0];
memcpy(data, template[i].input, template[i].ilen);
crypto_cipher_clear_flags(tfm, ~0);
if (template[i].wk)
crypto_cipher_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY);
ret = crypto_cipher_setkey(tfm, template[i].key,
template[i].klen);
if (!ret == template[i].fail) {
printk(KERN_ERR "alg: cipher: setkey failed "
"on test %d for %s: flags=%x\n", j,
algo, crypto_cipher_get_flags(tfm));
goto out;
} else if (ret)
continue;
for (k = 0; k < template[i].ilen;
k += crypto_cipher_blocksize(tfm)) {
if (enc)
crypto_cipher_encrypt_one(tfm, data + k,
data + k);
else
crypto_cipher_decrypt_one(tfm, data + k,
data + k);
}
q = data;
if (memcmp(q, template[i].result, template[i].rlen)) {
printk(KERN_ERR "alg: cipher: Test %d failed "
"on %s for %s\n", j, e, algo);
hexdump(q, template[i].rlen);
ret = -EINVAL;
goto out;
}
}
ret = 0;
out:
testmgr_free_buf(xbuf);
out_nobuf:
return ret;
}
static int __test_skcipher(struct crypto_ablkcipher *tfm, int enc,
struct cipher_testvec *template, unsigned int tcount,
const bool diff_dst, const int align_offset)
{
const char *algo =
crypto_tfm_alg_driver_name(crypto_ablkcipher_tfm(tfm));
unsigned int i, j, k, n, temp;
char *q;
struct ablkcipher_request *req;
struct scatterlist sg[8];
struct scatterlist sgout[8];
const char *e, *d;
struct tcrypt_result result;
void *data;
char iv[MAX_IVLEN];
char *xbuf[XBUFSIZE];
char *xoutbuf[XBUFSIZE];
int ret = -ENOMEM;
if (testmgr_alloc_buf(xbuf))
goto out_nobuf;
if (diff_dst && testmgr_alloc_buf(xoutbuf))
goto out_nooutbuf;
if (diff_dst)
d = "-ddst";
else
d = "";
if (enc == ENCRYPT)
e = "encryption";
else
e = "decryption";
init_completion(&result.completion);
req = ablkcipher_request_alloc(tfm, GFP_KERNEL);
if (!req) {
pr_err("alg: skcipher%s: Failed to allocate request for %s\n",
d, algo);
goto out;
}
ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
tcrypt_complete, &result);
j = 0;
for (i = 0; i < tcount; i++) {
if (template[i].np && !template[i].also_non_np)
continue;
if (template[i].iv)
memcpy(iv, template[i].iv, MAX_IVLEN);
else
memset(iv, 0, MAX_IVLEN);
j++;
ret = -EINVAL;
if (WARN_ON(align_offset + template[i].ilen > PAGE_SIZE))
goto out;
data = xbuf[0];
data += align_offset;
memcpy(data, template[i].input, template[i].ilen);
crypto_ablkcipher_clear_flags(tfm, ~0);
if (template[i].wk)
crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY);
ret = crypto_ablkcipher_setkey(tfm, template[i].key,
template[i].klen);
if (!ret == template[i].fail) {
pr_err("alg: skcipher%s: setkey failed on test %d for %s: flags=%x\n",
d, j, algo, crypto_ablkcipher_get_flags(tfm));
goto out;
} else if (ret)
continue;
sg_init_one(&sg[0], data, template[i].ilen);
if (diff_dst) {
data = xoutbuf[0];
data += align_offset;
sg_init_one(&sgout[0], data, template[i].ilen);
}
ablkcipher_request_set_crypt(req, sg, (diff_dst) ? sgout : sg,
template[i].ilen, iv);
ret = enc ? crypto_ablkcipher_encrypt(req) :
crypto_ablkcipher_decrypt(req);
switch (ret) {