mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 05:48:40 +00:00
![Siddh Raman Pant](/assets/img/avatar_default.png)
This fixes the corresponding coccinelle warning. Signed-off-by: Siddh Raman Pant <code@siddh.me> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Link: https://lore.kernel.org/r/20220627075148.140705-1-code@siddh.me [agordeev@linux.ibm.com added Link] Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
369 lines
8.4 KiB
C
369 lines
8.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
* Copyright (C) 2022 Red Hat, Inc.
|
|
* Author: Vladis Dronov <vdronoff@gmail.com>
|
|
*/
|
|
|
|
#include <asm/elf.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/smp.h>
|
|
#include <crypto/skcipher.h>
|
|
#include <crypto/akcipher.h>
|
|
#include <crypto/acompress.h>
|
|
#include <crypto/rng.h>
|
|
#include <crypto/drbg.h>
|
|
#include <crypto/kpp.h>
|
|
#include <crypto/internal/simd.h>
|
|
#include <crypto/chacha.h>
|
|
#include <crypto/aead.h>
|
|
#include <crypto/hash.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/fips.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/kthread.h>
|
|
#include <linux/module.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/time.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/zlib.h>
|
|
#include <linux/once.h>
|
|
#include <linux/random.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
|
|
static unsigned int data_size __read_mostly = 256;
|
|
static unsigned int debug __read_mostly = 0;
|
|
|
|
/* tie all skcipher structures together */
|
|
struct skcipher_def {
|
|
struct scatterlist sginp, sgout;
|
|
struct crypto_skcipher *tfm;
|
|
struct skcipher_request *req;
|
|
struct crypto_wait wait;
|
|
};
|
|
|
|
/* Perform cipher operations with the chacha lib */
|
|
static int test_lib_chacha(u8 *revert, u8 *cipher, u8 *plain)
|
|
{
|
|
u32 chacha_state[CHACHA_STATE_WORDS];
|
|
u8 iv[16], key[32];
|
|
u64 start, end;
|
|
|
|
memset(key, 'X', sizeof(key));
|
|
memset(iv, 'I', sizeof(iv));
|
|
|
|
if (debug) {
|
|
print_hex_dump(KERN_INFO, "key: ", DUMP_PREFIX_OFFSET,
|
|
16, 1, key, 32, 1);
|
|
|
|
print_hex_dump(KERN_INFO, "iv: ", DUMP_PREFIX_OFFSET,
|
|
16, 1, iv, 16, 1);
|
|
}
|
|
|
|
/* Encrypt */
|
|
chacha_init_arch(chacha_state, (u32*)key, iv);
|
|
|
|
start = ktime_get_ns();
|
|
chacha_crypt_arch(chacha_state, cipher, plain, data_size, 20);
|
|
end = ktime_get_ns();
|
|
|
|
|
|
if (debug)
|
|
print_hex_dump(KERN_INFO, "encr:", DUMP_PREFIX_OFFSET,
|
|
16, 1, cipher,
|
|
(data_size > 64 ? 64 : data_size), 1);
|
|
|
|
pr_info("lib encryption took: %lld nsec", end - start);
|
|
|
|
/* Decrypt */
|
|
chacha_init_arch(chacha_state, (u32 *)key, iv);
|
|
|
|
start = ktime_get_ns();
|
|
chacha_crypt_arch(chacha_state, revert, cipher, data_size, 20);
|
|
end = ktime_get_ns();
|
|
|
|
if (debug)
|
|
print_hex_dump(KERN_INFO, "decr:", DUMP_PREFIX_OFFSET,
|
|
16, 1, revert,
|
|
(data_size > 64 ? 64 : data_size), 1);
|
|
|
|
pr_info("lib decryption took: %lld nsec", end - start);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Perform cipher operations with skcipher */
|
|
static unsigned int test_skcipher_encdec(struct skcipher_def *sk,
|
|
int enc)
|
|
{
|
|
int rc;
|
|
|
|
if (enc) {
|
|
rc = crypto_wait_req(crypto_skcipher_encrypt(sk->req),
|
|
&sk->wait);
|
|
if (rc)
|
|
pr_info("skcipher encrypt returned with result"
|
|
"%d\n", rc);
|
|
}
|
|
else
|
|
{
|
|
rc = crypto_wait_req(crypto_skcipher_decrypt(sk->req),
|
|
&sk->wait);
|
|
if (rc)
|
|
pr_info("skcipher decrypt returned with result"
|
|
"%d\n", rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Initialize and trigger cipher operations */
|
|
static int test_skcipher(char *name, u8 *revert, u8 *cipher, u8 *plain)
|
|
{
|
|
struct skcipher_def sk;
|
|
struct crypto_skcipher *skcipher = NULL;
|
|
struct skcipher_request *req = NULL;
|
|
u8 iv[16], key[32];
|
|
u64 start, end;
|
|
int ret = -EFAULT;
|
|
|
|
skcipher = crypto_alloc_skcipher(name, 0, 0);
|
|
if (IS_ERR(skcipher)) {
|
|
pr_info("could not allocate skcipher %s handle\n", name);
|
|
return PTR_ERR(skcipher);
|
|
}
|
|
|
|
req = skcipher_request_alloc(skcipher, GFP_KERNEL);
|
|
if (!req) {
|
|
pr_info("could not allocate skcipher request\n");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
|
|
crypto_req_done,
|
|
&sk.wait);
|
|
|
|
memset(key, 'X', sizeof(key));
|
|
memset(iv, 'I', sizeof(iv));
|
|
|
|
if (crypto_skcipher_setkey(skcipher, key, 32)) {
|
|
pr_info("key could not be set\n");
|
|
ret = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
if (debug) {
|
|
print_hex_dump(KERN_INFO, "key: ", DUMP_PREFIX_OFFSET,
|
|
16, 1, key, 32, 1);
|
|
|
|
print_hex_dump(KERN_INFO, "iv: ", DUMP_PREFIX_OFFSET,
|
|
16, 1, iv, 16, 1);
|
|
}
|
|
|
|
sk.tfm = skcipher;
|
|
sk.req = req;
|
|
|
|
/* Encrypt in one pass */
|
|
sg_init_one(&sk.sginp, plain, data_size);
|
|
sg_init_one(&sk.sgout, cipher, data_size);
|
|
skcipher_request_set_crypt(req, &sk.sginp, &sk.sgout,
|
|
data_size, iv);
|
|
crypto_init_wait(&sk.wait);
|
|
|
|
/* Encrypt data */
|
|
start = ktime_get_ns();
|
|
ret = test_skcipher_encdec(&sk, 1);
|
|
end = ktime_get_ns();
|
|
|
|
if (ret)
|
|
goto out;
|
|
|
|
pr_info("%s tfm encryption successful, took %lld nsec\n", name, end - start);
|
|
|
|
if (debug)
|
|
print_hex_dump(KERN_INFO, "encr:", DUMP_PREFIX_OFFSET,
|
|
16, 1, cipher,
|
|
(data_size > 64 ? 64 : data_size), 1);
|
|
|
|
/* Prepare for decryption */
|
|
memset(iv, 'I', sizeof(iv));
|
|
|
|
sg_init_one(&sk.sginp, cipher, data_size);
|
|
sg_init_one(&sk.sgout, revert, data_size);
|
|
skcipher_request_set_crypt(req, &sk.sginp, &sk.sgout,
|
|
data_size, iv);
|
|
crypto_init_wait(&sk.wait);
|
|
|
|
/* Decrypt data */
|
|
start = ktime_get_ns();
|
|
ret = test_skcipher_encdec(&sk, 0);
|
|
end = ktime_get_ns();
|
|
|
|
if (ret)
|
|
goto out;
|
|
|
|
pr_info("%s tfm decryption successful, took %lld nsec\n", name, end - start);
|
|
|
|
if (debug)
|
|
print_hex_dump(KERN_INFO, "decr:", DUMP_PREFIX_OFFSET,
|
|
16, 1, revert,
|
|
(data_size > 64 ? 64 : data_size), 1);
|
|
|
|
/* Dump some internal skcipher data */
|
|
if (debug)
|
|
pr_info("skcipher %s: cryptlen %d blksize %d stride %d "
|
|
"ivsize %d alignmask 0x%x\n",
|
|
name, sk.req->cryptlen,
|
|
crypto_skcipher_blocksize(sk.tfm),
|
|
crypto_skcipher_alg(sk.tfm)->walksize,
|
|
crypto_skcipher_ivsize(sk.tfm),
|
|
crypto_skcipher_alignmask(sk.tfm));
|
|
|
|
out:
|
|
if (skcipher)
|
|
crypto_free_skcipher(skcipher);
|
|
if (req)
|
|
skcipher_request_free(req);
|
|
return ret;
|
|
}
|
|
|
|
static int __init chacha_s390_test_init(void)
|
|
{
|
|
u8 *plain = NULL, *revert = NULL;
|
|
u8 *cipher_generic = NULL, *cipher_s390 = NULL;
|
|
int ret = -1;
|
|
|
|
pr_info("s390 ChaCha20 test module: size=%d debug=%d\n",
|
|
data_size, debug);
|
|
|
|
/* Allocate and fill buffers */
|
|
plain = vmalloc(data_size);
|
|
if (!plain) {
|
|
pr_info("could not allocate plain buffer\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
memset(plain, 'a', data_size);
|
|
get_random_bytes(plain, (data_size > 256 ? 256 : data_size));
|
|
|
|
cipher_generic = vzalloc(data_size);
|
|
if (!cipher_generic) {
|
|
pr_info("could not allocate cipher_generic buffer\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
|
|
cipher_s390 = vzalloc(data_size);
|
|
if (!cipher_s390) {
|
|
pr_info("could not allocate cipher_s390 buffer\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
|
|
revert = vzalloc(data_size);
|
|
if (!revert) {
|
|
pr_info("could not allocate revert buffer\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
|
|
if (debug)
|
|
print_hex_dump(KERN_INFO, "src: ", DUMP_PREFIX_OFFSET,
|
|
16, 1, plain,
|
|
(data_size > 64 ? 64 : data_size), 1);
|
|
|
|
/* Use chacha20 generic */
|
|
ret = test_skcipher("chacha20-generic", revert, cipher_generic, plain);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (memcmp(plain, revert, data_size)) {
|
|
pr_info("generic en/decryption check FAILED\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
else
|
|
pr_info("generic en/decryption check OK\n");
|
|
|
|
memset(revert, 0, data_size);
|
|
|
|
/* Use chacha20 s390 */
|
|
ret = test_skcipher("chacha20-s390", revert, cipher_s390, plain);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (memcmp(plain, revert, data_size)) {
|
|
pr_info("s390 en/decryption check FAILED\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
else
|
|
pr_info("s390 en/decryption check OK\n");
|
|
|
|
if (memcmp(cipher_generic, cipher_s390, data_size)) {
|
|
pr_info("s390 vs generic check FAILED\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
else
|
|
pr_info("s390 vs generic check OK\n");
|
|
|
|
memset(cipher_s390, 0, data_size);
|
|
memset(revert, 0, data_size);
|
|
|
|
/* Use chacha20 lib */
|
|
test_lib_chacha(revert, cipher_s390, plain);
|
|
|
|
if (memcmp(plain, revert, data_size)) {
|
|
pr_info("lib en/decryption check FAILED\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
else
|
|
pr_info("lib en/decryption check OK\n");
|
|
|
|
if (memcmp(cipher_generic, cipher_s390, data_size)) {
|
|
pr_info("lib vs generic check FAILED\n");
|
|
ret = -2;
|
|
goto out;
|
|
}
|
|
else
|
|
pr_info("lib vs generic check OK\n");
|
|
|
|
pr_info("--- chacha20 s390 test end ---\n");
|
|
|
|
out:
|
|
if (plain)
|
|
vfree(plain);
|
|
if (cipher_generic)
|
|
vfree(cipher_generic);
|
|
if (cipher_s390)
|
|
vfree(cipher_s390);
|
|
if (revert)
|
|
vfree(revert);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void __exit chacha_s390_test_exit(void)
|
|
{
|
|
pr_info("s390 ChaCha20 test module exit\n");
|
|
}
|
|
|
|
module_param_named(size, data_size, uint, 0660);
|
|
module_param(debug, int, 0660);
|
|
MODULE_PARM_DESC(size, "Size of a plaintext");
|
|
MODULE_PARM_DESC(debug, "Debug level (0=off,1=on)");
|
|
|
|
module_init(chacha_s390_test_init);
|
|
module_exit(chacha_s390_test_exit);
|
|
|
|
MODULE_DESCRIPTION("s390 ChaCha20 self-test");
|
|
MODULE_AUTHOR("Vladis Dronov <vdronoff@gmail.com>");
|
|
MODULE_LICENSE("GPL v2");
|