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SUNRPC: Add checksum KUnit tests for the RFC 6803 encryption types 

Test the new-to-RPCSEC CMAC digest algorithm.

Tested-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-01-15 12:24:06 -05:00
parent 35f6e42e81
commit 02142b2ca8
2 changed files with 169 additions and 0 deletions
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1
net/sunrpc/auth_gss/gss_krb5_crypto.c
View File

@ -361,6 +361,7 @@ out_free_cksum:
kfree_sensitive(checksumdata);
return err ? GSS_S_FAILURE : GSS_S_COMPLETE;
}
EXPORT_SYMBOL_IF_KUNIT(gss_krb5_checksum);
struct encryptor_desc {
u8 iv[GSS_KRB5_MAX_BLOCKSIZE];

168
net/sunrpc/auth_gss/gss_krb5_test.c
View File

@ -10,6 +10,7 @@
#include <kunit/visibility.h>
#include <linux/kernel.h>
#include <crypto/hash.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/gss_krb5.h>
@ -64,6 +65,52 @@ static void kdf_case(struct kunit *test)
"key mismatch");
}
static void checksum_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
struct xdr_buf buf = {
.head[0].iov_base = param->plaintext->data,
.head[0].iov_len = param->plaintext->len,
.len = param->plaintext->len,
};
const struct gss_krb5_enctype *gk5e;
struct xdr_netobj Kc, checksum;
struct crypto_ahash *tfm;
int err;
/* Arrange */
gk5e = gss_krb5_lookup_enctype(param->enctype);
KUNIT_ASSERT_NOT_NULL(test, gk5e);
Kc.len = gk5e->Kc_length;
Kc.data = kunit_kzalloc(test, Kc.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, Kc.data);
err = gk5e->derive_key(gk5e, param->base_key, &Kc,
param->usage, GFP_KERNEL);
KUNIT_ASSERT_EQ(test, err, 0);
tfm = crypto_alloc_ahash(gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, tfm);
err = crypto_ahash_setkey(tfm, Kc.data, Kc.len);
KUNIT_ASSERT_EQ(test, err, 0);
checksum.len = gk5e->cksumlength;
checksum.data = kunit_kzalloc(test, checksum.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, checksum.data);
/* Act */
err = gss_krb5_checksum(tfm, NULL, 0, &buf, 0, &checksum);
KUNIT_ASSERT_EQ(test, err, 0);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data,
checksum.data, checksum.len), 0,
"checksum mismatch");
crypto_free_ahash(tfm);
}
#define DEFINE_HEX_XDR_NETOBJ(name, hex_array...) \
static const u8 name ## _data[] = { hex_array }; \
static const struct xdr_netobj name = { \
@ -71,6 +118,13 @@ static void kdf_case(struct kunit *test)
.len = sizeof(name##_data), \
}
#define DEFINE_STR_XDR_NETOBJ(name, string) \
static const u8 name ## _str[] = string; \
static const struct xdr_netobj name = { \
.data = (u8 *)name##_str, \
.len = sizeof(name##_str) - 1, \
}
/*
* RFC 3961 Appendix A.1. n-fold
*
@ -836,12 +890,126 @@ static const struct gss_krb5_test_param rfc6803_kdf_test_params[] = {
/* Creates the function rfc6803_kdf_gen_params */
KUNIT_ARRAY_PARAM(rfc6803_kdf, rfc6803_kdf_test_params, gss_krb5_get_desc);
/*
* From RFC 6803 Section 10. Test vectors
*
* Sample checksums.
*
* Copyright (c) 2012 IETF Trust and the persons identified as the
* document authors. All rights reserved.
*
* XXX: These tests are likely to fail on EBCDIC or Unicode platforms.
*/
DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test1_plaintext,
"abcdefghijk");
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test1_basekey,
0x1d, 0xc4, 0x6a, 0x8d, 0x76, 0x3f, 0x4f, 0x93,
0x74, 0x2b, 0xcb, 0xa3, 0x38, 0x75, 0x76, 0xc3
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test1_usage,
0x00, 0x00, 0x00, 0x07, KEY_USAGE_SEED_CHECKSUM
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test1_expected_result,
0x11, 0x78, 0xe6, 0xc5, 0xc4, 0x7a, 0x8c, 0x1a,
0xe0, 0xc4, 0xb9, 0xc7, 0xd4, 0xeb, 0x7b, 0x6b
);
DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test2_plaintext,
"ABCDEFGHIJKLMNOPQRSTUVWXYZ");
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test2_basekey,
0x50, 0x27, 0xbc, 0x23, 0x1d, 0x0f, 0x3a, 0x9d,
0x23, 0x33, 0x3f, 0x1c, 0xa6, 0xfd, 0xbe, 0x7c
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test2_usage,
0x00, 0x00, 0x00, 0x08, KEY_USAGE_SEED_CHECKSUM
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test2_expected_result,
0xd1, 0xb3, 0x4f, 0x70, 0x04, 0xa7, 0x31, 0xf2,
0x3a, 0x0c, 0x00, 0xbf, 0x6c, 0x3f, 0x75, 0x3a
);
DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test3_plaintext,
"123456789");
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test3_basekey,
0xb6, 0x1c, 0x86, 0xcc, 0x4e, 0x5d, 0x27, 0x57,
0x54, 0x5a, 0xd4, 0x23, 0x39, 0x9f, 0xb7, 0x03,
0x1e, 0xca, 0xb9, 0x13, 0xcb, 0xb9, 0x00, 0xbd,
0x7a, 0x3c, 0x6d, 0xd8, 0xbf, 0x92, 0x01, 0x5b
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test3_usage,
0x00, 0x00, 0x00, 0x09, KEY_USAGE_SEED_CHECKSUM
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test3_expected_result,
0x87, 0xa1, 0x2c, 0xfd, 0x2b, 0x96, 0x21, 0x48,
0x10, 0xf0, 0x1c, 0x82, 0x6e, 0x77, 0x44, 0xb1
);
DEFINE_STR_XDR_NETOBJ(rfc6803_checksum_test4_plaintext,
"!@#$%^&*()!@#$%^&*()!@#$%^&*()");
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test4_basekey,
0x32, 0x16, 0x4c, 0x5b, 0x43, 0x4d, 0x1d, 0x15,
0x38, 0xe4, 0xcf, 0xd9, 0xbe, 0x80, 0x40, 0xfe,
0x8c, 0x4a, 0xc7, 0xac, 0xc4, 0xb9, 0x3d, 0x33,
0x14, 0xd2, 0x13, 0x36, 0x68, 0x14, 0x7a, 0x05
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test4_usage,
0x00, 0x00, 0x00, 0x0a, KEY_USAGE_SEED_CHECKSUM
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_checksum_test4_expected_result,
0x3f, 0xa0, 0xb4, 0x23, 0x55, 0xe5, 0x2b, 0x18,
0x91, 0x87, 0x29, 0x4a, 0xa2, 0x52, 0xab, 0x64
);
static const struct gss_krb5_test_param rfc6803_checksum_test_params[] = {
{
.desc = "camellia128-cts-cmac checksum test 1",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.base_key = &rfc6803_checksum_test1_basekey,
.usage = &rfc6803_checksum_test1_usage,
.plaintext = &rfc6803_checksum_test1_plaintext,
.expected_result = &rfc6803_checksum_test1_expected_result,
},
{
.desc = "camellia128-cts-cmac checksum test 2",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.base_key = &rfc6803_checksum_test2_basekey,
.usage = &rfc6803_checksum_test2_usage,
.plaintext = &rfc6803_checksum_test2_plaintext,
.expected_result = &rfc6803_checksum_test2_expected_result,
},
{
.desc = "camellia256-cts-cmac checksum test 3",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.base_key = &rfc6803_checksum_test3_basekey,
.usage = &rfc6803_checksum_test3_usage,
.plaintext = &rfc6803_checksum_test3_plaintext,
.expected_result = &rfc6803_checksum_test3_expected_result,
},
{
.desc = "camellia256-cts-cmac checksum test 4",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.base_key = &rfc6803_checksum_test4_basekey,
.usage = &rfc6803_checksum_test4_usage,
.plaintext = &rfc6803_checksum_test4_plaintext,
.expected_result = &rfc6803_checksum_test4_expected_result,
},
};
/* Creates the function rfc6803_checksum_gen_params */
KUNIT_ARRAY_PARAM(rfc6803_checksum, rfc6803_checksum_test_params,
gss_krb5_get_desc);
static struct kunit_case rfc6803_test_cases[] = {
{
.name = "RFC 6803 key derivation",
.run_case = kdf_case,
.generate_params = rfc6803_kdf_gen_params,
},
{
.name = "RFC 6803 checksum",
.run_case = checksum_case,
.generate_params = rfc6803_checksum_gen_params,
},
};
static struct kunit_suite rfc6803_suite = {