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OpenCloudOS-Kernel/net/sunrpc/auth_gss/gss_krb5_test.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2022 Oracle and/or its affiliates.
*
* KUnit test of SunRPC's GSS Kerberos mechanism. Subsystem
* name is "rpcsec_gss_krb5".
*/
#include <kunit/test.h>
#include <kunit/visibility.h>
#include <linux/kernel.h>
#include <crypto/hash.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/gss_krb5.h>
#include "gss_krb5_internal.h"
MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
struct gss_krb5_test_param {
const char *desc;
u32 enctype;
u32 nfold;
u32 constant;
const struct xdr_netobj *base_key;
const struct xdr_netobj *Ke;
const struct xdr_netobj *usage;
const struct xdr_netobj *plaintext;
const struct xdr_netobj *confounder;
const struct xdr_netobj *expected_result;
const struct xdr_netobj *expected_hmac;
const struct xdr_netobj *next_iv;
};
static inline void gss_krb5_get_desc(const struct gss_krb5_test_param *param,
char *desc)
{
strscpy(desc, param->desc, KUNIT_PARAM_DESC_SIZE);
}
static void kdf_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
const struct gss_krb5_enctype *gk5e;
struct xdr_netobj derivedkey;
int err;
/* Arrange */
gk5e = gss_krb5_lookup_enctype(param->enctype);
if (!gk5e)
kunit_skip(test, "Encryption type is not available");
derivedkey.data = kunit_kzalloc(test, param->expected_result->len,
GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, derivedkey.data);
derivedkey.len = param->expected_result->len;
/* Act */
err = gk5e->derive_key(gk5e, param->base_key, &derivedkey,
param->usage, GFP_KERNEL);
KUNIT_ASSERT_EQ(test, err, 0);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data,
derivedkey.data, derivedkey.len), 0,
"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_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);
if (!gk5e)
kunit_skip(test, "Encryption type is not available");
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);
buf.head[0].iov_base = kunit_kzalloc(test, buf.head[0].iov_len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf.head[0].iov_base);
memcpy(buf.head[0].iov_base, param->plaintext->data, buf.head[0].iov_len);
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 = { \
.data = (u8 *)name##_data, \
.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
*
* The n-fold function is defined in section 5.1 of RFC 3961.
*
* This test material is copyright (C) The Internet Society (2005).
*/
DEFINE_HEX_XDR_NETOBJ(nfold_test1_plaintext,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35
);
DEFINE_HEX_XDR_NETOBJ(nfold_test1_expected_result,
0xbe, 0x07, 0x26, 0x31, 0x27, 0x6b, 0x19, 0x55
);
DEFINE_HEX_XDR_NETOBJ(nfold_test2_plaintext,
0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64
);
DEFINE_HEX_XDR_NETOBJ(nfold_test2_expected_result,
0x78, 0xa0, 0x7b, 0x6c, 0xaf, 0x85, 0xfa
);
DEFINE_HEX_XDR_NETOBJ(nfold_test3_plaintext,
0x52, 0x6f, 0x75, 0x67, 0x68, 0x20, 0x43, 0x6f,
0x6e, 0x73, 0x65, 0x6e, 0x73, 0x75, 0x73, 0x2c,
0x20, 0x61, 0x6e, 0x64, 0x20, 0x52, 0x75, 0x6e,
0x6e, 0x69, 0x6e, 0x67, 0x20, 0x43, 0x6f, 0x64,
0x65
);
DEFINE_HEX_XDR_NETOBJ(nfold_test3_expected_result,
0xbb, 0x6e, 0xd3, 0x08, 0x70, 0xb7, 0xf0, 0xe0
);
DEFINE_HEX_XDR_NETOBJ(nfold_test4_plaintext,
0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64
);
DEFINE_HEX_XDR_NETOBJ(nfold_test4_expected_result,
0x59, 0xe4, 0xa8, 0xca, 0x7c, 0x03, 0x85, 0xc3,
0xc3, 0x7b, 0x3f, 0x6d, 0x20, 0x00, 0x24, 0x7c,
0xb6, 0xe6, 0xbd, 0x5b, 0x3e
);
DEFINE_HEX_XDR_NETOBJ(nfold_test5_plaintext,
0x4d, 0x41, 0x53, 0x53, 0x41, 0x43, 0x48, 0x56,
0x53, 0x45, 0x54, 0x54, 0x53, 0x20, 0x49, 0x4e,
0x53, 0x54, 0x49, 0x54, 0x56, 0x54, 0x45, 0x20,
0x4f, 0x46, 0x20, 0x54, 0x45, 0x43, 0x48, 0x4e,
0x4f, 0x4c, 0x4f, 0x47, 0x59
);
DEFINE_HEX_XDR_NETOBJ(nfold_test5_expected_result,
0xdb, 0x3b, 0x0d, 0x8f, 0x0b, 0x06, 0x1e, 0x60,
0x32, 0x82, 0xb3, 0x08, 0xa5, 0x08, 0x41, 0x22,
0x9a, 0xd7, 0x98, 0xfa, 0xb9, 0x54, 0x0c, 0x1b
);
DEFINE_HEX_XDR_NETOBJ(nfold_test6_plaintext,
0x51
);
DEFINE_HEX_XDR_NETOBJ(nfold_test6_expected_result,
0x51, 0x8a, 0x54, 0xa2, 0x15, 0xa8, 0x45, 0x2a,
0x51, 0x8a, 0x54, 0xa2, 0x15, 0xa8, 0x45, 0x2a,
0x51, 0x8a, 0x54, 0xa2, 0x15
);
DEFINE_HEX_XDR_NETOBJ(nfold_test7_plaintext,
0x62, 0x61
);
DEFINE_HEX_XDR_NETOBJ(nfold_test7_expected_result,
0xfb, 0x25, 0xd5, 0x31, 0xae, 0x89, 0x74, 0x49,
0x9f, 0x52, 0xfd, 0x92, 0xea, 0x98, 0x57, 0xc4,
0xba, 0x24, 0xcf, 0x29, 0x7e
);
DEFINE_HEX_XDR_NETOBJ(nfold_test_kerberos,
0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73
);
DEFINE_HEX_XDR_NETOBJ(nfold_test8_expected_result,
0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73
);
DEFINE_HEX_XDR_NETOBJ(nfold_test9_expected_result,
0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73,
0x7b, 0x9b, 0x5b, 0x2b, 0x93, 0x13, 0x2b, 0x93
);
DEFINE_HEX_XDR_NETOBJ(nfold_test10_expected_result,
0x83, 0x72, 0xc2, 0x36, 0x34, 0x4e, 0x5f, 0x15,
0x50, 0xcd, 0x07, 0x47, 0xe1, 0x5d, 0x62, 0xca,
0x7a, 0x5a, 0x3b, 0xce, 0xa4
);
DEFINE_HEX_XDR_NETOBJ(nfold_test11_expected_result,
0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73,
0x7b, 0x9b, 0x5b, 0x2b, 0x93, 0x13, 0x2b, 0x93,
0x5c, 0x9b, 0xdc, 0xda, 0xd9, 0x5c, 0x98, 0x99,
0xc4, 0xca, 0xe4, 0xde, 0xe6, 0xd6, 0xca, 0xe4
);
static const struct gss_krb5_test_param rfc3961_nfold_test_params[] = {
{
.desc = "64-fold(\"012345\")",
.nfold = 64,
.plaintext = &nfold_test1_plaintext,
.expected_result = &nfold_test1_expected_result,
},
{
.desc = "56-fold(\"password\")",
.nfold = 56,
.plaintext = &nfold_test2_plaintext,
.expected_result = &nfold_test2_expected_result,
},
{
.desc = "64-fold(\"Rough Consensus, and Running Code\")",
.nfold = 64,
.plaintext = &nfold_test3_plaintext,
.expected_result = &nfold_test3_expected_result,
},
{
.desc = "168-fold(\"password\")",
.nfold = 168,
.plaintext = &nfold_test4_plaintext,
.expected_result = &nfold_test4_expected_result,
},
{
.desc = "192-fold(\"MASSACHVSETTS INSTITVTE OF TECHNOLOGY\")",
.nfold = 192,
.plaintext = &nfold_test5_plaintext,
.expected_result = &nfold_test5_expected_result,
},
{
.desc = "168-fold(\"Q\")",
.nfold = 168,
.plaintext = &nfold_test6_plaintext,
.expected_result = &nfold_test6_expected_result,
},
{
.desc = "168-fold(\"ba\")",
.nfold = 168,
.plaintext = &nfold_test7_plaintext,
.expected_result = &nfold_test7_expected_result,
},
{
.desc = "64-fold(\"kerberos\")",
.nfold = 64,
.plaintext = &nfold_test_kerberos,
.expected_result = &nfold_test8_expected_result,
},
{
.desc = "128-fold(\"kerberos\")",
.nfold = 128,
.plaintext = &nfold_test_kerberos,
.expected_result = &nfold_test9_expected_result,
},
{
.desc = "168-fold(\"kerberos\")",
.nfold = 168,
.plaintext = &nfold_test_kerberos,
.expected_result = &nfold_test10_expected_result,
},
{
.desc = "256-fold(\"kerberos\")",
.nfold = 256,
.plaintext = &nfold_test_kerberos,
.expected_result = &nfold_test11_expected_result,
},
};
/* Creates the function rfc3961_nfold_gen_params */
KUNIT_ARRAY_PARAM(rfc3961_nfold, rfc3961_nfold_test_params, gss_krb5_get_desc);
static void rfc3961_nfold_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
u8 *result;
/* Arrange */
result = kunit_kzalloc(test, 4096, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, result);
/* Act */
krb5_nfold(param->plaintext->len * 8, param->plaintext->data,
param->expected_result->len * 8, result);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data,
result, param->expected_result->len), 0,
"result mismatch");
}
static struct kunit_case rfc3961_test_cases[] = {
{
.name = "RFC 3961 n-fold",
.run_case = rfc3961_nfold_case,
.generate_params = rfc3961_nfold_gen_params,
},
{}
};
static struct kunit_suite rfc3961_suite = {
.name = "RFC 3961 tests",
.test_cases = rfc3961_test_cases,
};
/*
* From RFC 3962 Appendix B: Sample Test Vectors
*
* Some test vectors for CBC with ciphertext stealing, using an
* initial vector of all-zero.
*
* This test material is copyright (C) The Internet Society (2005).
*/
DEFINE_HEX_XDR_NETOBJ(rfc3962_encryption_key,
0x63, 0x68, 0x69, 0x63, 0x6b, 0x65, 0x6e, 0x20,
0x74, 0x65, 0x72, 0x69, 0x79, 0x61, 0x6b, 0x69
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test1_plaintext,
0x49, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20,
0x6c, 0x69, 0x6b, 0x65, 0x20, 0x74, 0x68, 0x65,
0x20
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test1_expected_result,
0xc6, 0x35, 0x35, 0x68, 0xf2, 0xbf, 0x8c, 0xb4,
0xd8, 0xa5, 0x80, 0x36, 0x2d, 0xa7, 0xff, 0x7f,
0x97
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test1_next_iv,
0xc6, 0x35, 0x35, 0x68, 0xf2, 0xbf, 0x8c, 0xb4,
0xd8, 0xa5, 0x80, 0x36, 0x2d, 0xa7, 0xff, 0x7f
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test2_plaintext,
0x49, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20,
0x6c, 0x69, 0x6b, 0x65, 0x20, 0x74, 0x68, 0x65,
0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
0x20, 0x47, 0x61, 0x75, 0x27, 0x73, 0x20
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test2_expected_result,
0xfc, 0x00, 0x78, 0x3e, 0x0e, 0xfd, 0xb2, 0xc1,
0xd4, 0x45, 0xd4, 0xc8, 0xef, 0xf7, 0xed, 0x22,
0x97, 0x68, 0x72, 0x68, 0xd6, 0xec, 0xcc, 0xc0,
0xc0, 0x7b, 0x25, 0xe2, 0x5e, 0xcf, 0xe5
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test2_next_iv,
0xfc, 0x00, 0x78, 0x3e, 0x0e, 0xfd, 0xb2, 0xc1,
0xd4, 0x45, 0xd4, 0xc8, 0xef, 0xf7, 0xed, 0x22
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test3_plaintext,
0x49, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20,
0x6c, 0x69, 0x6b, 0x65, 0x20, 0x74, 0x68, 0x65,
0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
0x20, 0x47, 0x61, 0x75, 0x27, 0x73, 0x20, 0x43
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test3_expected_result,
0x39, 0x31, 0x25, 0x23, 0xa7, 0x86, 0x62, 0xd5,
0xbe, 0x7f, 0xcb, 0xcc, 0x98, 0xeb, 0xf5, 0xa8,
0x97, 0x68, 0x72, 0x68, 0xd6, 0xec, 0xcc, 0xc0,
0xc0, 0x7b, 0x25, 0xe2, 0x5e, 0xcf, 0xe5, 0x84
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test3_next_iv,
0x39, 0x31, 0x25, 0x23, 0xa7, 0x86, 0x62, 0xd5,
0xbe, 0x7f, 0xcb, 0xcc, 0x98, 0xeb, 0xf5, 0xa8
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test4_plaintext,
0x49, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20,
0x6c, 0x69, 0x6b, 0x65, 0x20, 0x74, 0x68, 0x65,
0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
0x20, 0x47, 0x61, 0x75, 0x27, 0x73, 0x20, 0x43,
0x68, 0x69, 0x63, 0x6b, 0x65, 0x6e, 0x2c, 0x20,
0x70, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x2c
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test4_expected_result,
0x97, 0x68, 0x72, 0x68, 0xd6, 0xec, 0xcc, 0xc0,
0xc0, 0x7b, 0x25, 0xe2, 0x5e, 0xcf, 0xe5, 0x84,
0xb3, 0xff, 0xfd, 0x94, 0x0c, 0x16, 0xa1, 0x8c,
0x1b, 0x55, 0x49, 0xd2, 0xf8, 0x38, 0x02, 0x9e,
0x39, 0x31, 0x25, 0x23, 0xa7, 0x86, 0x62, 0xd5,
0xbe, 0x7f, 0xcb, 0xcc, 0x98, 0xeb, 0xf5
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test4_next_iv,
0xb3, 0xff, 0xfd, 0x94, 0x0c, 0x16, 0xa1, 0x8c,
0x1b, 0x55, 0x49, 0xd2, 0xf8, 0x38, 0x02, 0x9e
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test5_plaintext,
0x49, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20,
0x6c, 0x69, 0x6b, 0x65, 0x20, 0x74, 0x68, 0x65,
0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
0x20, 0x47, 0x61, 0x75, 0x27, 0x73, 0x20, 0x43,
0x68, 0x69, 0x63, 0x6b, 0x65, 0x6e, 0x2c, 0x20,
0x70, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x2c, 0x20
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test5_expected_result,
0x97, 0x68, 0x72, 0x68, 0xd6, 0xec, 0xcc, 0xc0,
0xc0, 0x7b, 0x25, 0xe2, 0x5e, 0xcf, 0xe5, 0x84,
0x9d, 0xad, 0x8b, 0xbb, 0x96, 0xc4, 0xcd, 0xc0,
0x3b, 0xc1, 0x03, 0xe1, 0xa1, 0x94, 0xbb, 0xd8,
0x39, 0x31, 0x25, 0x23, 0xa7, 0x86, 0x62, 0xd5,
0xbe, 0x7f, 0xcb, 0xcc, 0x98, 0xeb, 0xf5, 0xa8
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test5_next_iv,
0x9d, 0xad, 0x8b, 0xbb, 0x96, 0xc4, 0xcd, 0xc0,
0x3b, 0xc1, 0x03, 0xe1, 0xa1, 0x94, 0xbb, 0xd8
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test6_plaintext,
0x49, 0x20, 0x77, 0x6f, 0x75, 0x6c, 0x64, 0x20,
0x6c, 0x69, 0x6b, 0x65, 0x20, 0x74, 0x68, 0x65,
0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
0x20, 0x47, 0x61, 0x75, 0x27, 0x73, 0x20, 0x43,
0x68, 0x69, 0x63, 0x6b, 0x65, 0x6e, 0x2c, 0x20,
0x70, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x2c, 0x20,
0x61, 0x6e, 0x64, 0x20, 0x77, 0x6f, 0x6e, 0x74,
0x6f, 0x6e, 0x20, 0x73, 0x6f, 0x75, 0x70, 0x2e
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test6_expected_result,
0x97, 0x68, 0x72, 0x68, 0xd6, 0xec, 0xcc, 0xc0,
0xc0, 0x7b, 0x25, 0xe2, 0x5e, 0xcf, 0xe5, 0x84,
0x39, 0x31, 0x25, 0x23, 0xa7, 0x86, 0x62, 0xd5,
0xbe, 0x7f, 0xcb, 0xcc, 0x98, 0xeb, 0xf5, 0xa8,
0x48, 0x07, 0xef, 0xe8, 0x36, 0xee, 0x89, 0xa5,
0x26, 0x73, 0x0d, 0xbc, 0x2f, 0x7b, 0xc8, 0x40,
0x9d, 0xad, 0x8b, 0xbb, 0x96, 0xc4, 0xcd, 0xc0,
0x3b, 0xc1, 0x03, 0xe1, 0xa1, 0x94, 0xbb, 0xd8
);
DEFINE_HEX_XDR_NETOBJ(rfc3962_enc_test6_next_iv,
0x48, 0x07, 0xef, 0xe8, 0x36, 0xee, 0x89, 0xa5,
0x26, 0x73, 0x0d, 0xbc, 0x2f, 0x7b, 0xc8, 0x40
);
static const struct gss_krb5_test_param rfc3962_encrypt_test_params[] = {
{
.desc = "Encrypt with aes128-cts-hmac-sha1-96 case 1",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &rfc3962_enc_test1_plaintext,
.expected_result = &rfc3962_enc_test1_expected_result,
.next_iv = &rfc3962_enc_test1_next_iv,
},
{
.desc = "Encrypt with aes128-cts-hmac-sha1-96 case 2",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &rfc3962_enc_test2_plaintext,
.expected_result = &rfc3962_enc_test2_expected_result,
.next_iv = &rfc3962_enc_test2_next_iv,
},
{
.desc = "Encrypt with aes128-cts-hmac-sha1-96 case 3",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &rfc3962_enc_test3_plaintext,
.expected_result = &rfc3962_enc_test3_expected_result,
.next_iv = &rfc3962_enc_test3_next_iv,
},
{
.desc = "Encrypt with aes128-cts-hmac-sha1-96 case 4",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &rfc3962_enc_test4_plaintext,
.expected_result = &rfc3962_enc_test4_expected_result,
.next_iv = &rfc3962_enc_test4_next_iv,
},
{
.desc = "Encrypt with aes128-cts-hmac-sha1-96 case 5",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &rfc3962_enc_test5_plaintext,
.expected_result = &rfc3962_enc_test5_expected_result,
.next_iv = &rfc3962_enc_test5_next_iv,
},
{
.desc = "Encrypt with aes128-cts-hmac-sha1-96 case 6",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &rfc3962_enc_test6_plaintext,
.expected_result = &rfc3962_enc_test6_expected_result,
.next_iv = &rfc3962_enc_test6_next_iv,
},
};
/* Creates the function rfc3962_encrypt_gen_params */
KUNIT_ARRAY_PARAM(rfc3962_encrypt, rfc3962_encrypt_test_params,
gss_krb5_get_desc);
/*
* This tests the implementation of the encryption part of the mechanism.
* It does not apply a confounder or test the result of HMAC over the
* plaintext.
*/
static void rfc3962_encrypt_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
struct crypto_sync_skcipher *cts_tfm, *cbc_tfm;
const struct gss_krb5_enctype *gk5e;
struct xdr_buf buf;
void *iv, *text;
u32 err;
/* Arrange */
gk5e = gss_krb5_lookup_enctype(param->enctype);
if (!gk5e)
kunit_skip(test, "Encryption type is not available");
cbc_tfm = crypto_alloc_sync_skcipher(gk5e->aux_cipher, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cbc_tfm);
err = crypto_sync_skcipher_setkey(cbc_tfm, param->Ke->data, param->Ke->len);
KUNIT_ASSERT_EQ(test, err, 0);
cts_tfm = crypto_alloc_sync_skcipher(gk5e->encrypt_name, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cts_tfm);
err = crypto_sync_skcipher_setkey(cts_tfm, param->Ke->data, param->Ke->len);
KUNIT_ASSERT_EQ(test, err, 0);
iv = kunit_kzalloc(test, crypto_sync_skcipher_ivsize(cts_tfm), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, iv);
text = kunit_kzalloc(test, param->plaintext->len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, text);
memcpy(text, param->plaintext->data, param->plaintext->len);
memset(&buf, 0, sizeof(buf));
buf.head[0].iov_base = text;
buf.head[0].iov_len = param->plaintext->len;
buf.len = buf.head[0].iov_len;
/* Act */
err = krb5_cbc_cts_encrypt(cts_tfm, cbc_tfm, 0, &buf, NULL,
iv, crypto_sync_skcipher_ivsize(cts_tfm));
KUNIT_ASSERT_EQ(test, err, 0);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test,
param->expected_result->len, buf.len,
"ciphertext length mismatch");
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data,
text, param->expected_result->len), 0,
"ciphertext mismatch");
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->next_iv->data, iv,
param->next_iv->len), 0,
"IV mismatch");
crypto_free_sync_skcipher(cts_tfm);
crypto_free_sync_skcipher(cbc_tfm);
}
static struct kunit_case rfc3962_test_cases[] = {
{
.name = "RFC 3962 encryption",
.run_case = rfc3962_encrypt_case,
.generate_params = rfc3962_encrypt_gen_params,
},
{}
};
static struct kunit_suite rfc3962_suite = {
.name = "RFC 3962 suite",
.test_cases = rfc3962_test_cases,
};
/*
* From RFC 6803 Section 10. Test vectors
*
* Sample results for key derivation
*
* Copyright (c) 2012 IETF Trust and the persons identified as the
* document authors. All rights reserved.
*/
DEFINE_HEX_XDR_NETOBJ(camellia128_cts_cmac_basekey,
0x57, 0xd0, 0x29, 0x72, 0x98, 0xff, 0xd9, 0xd3,
0x5d, 0xe5, 0xa4, 0x7f, 0xb4, 0xbd, 0xe2, 0x4b
);
DEFINE_HEX_XDR_NETOBJ(camellia128_cts_cmac_Kc,
0xd1, 0x55, 0x77, 0x5a, 0x20, 0x9d, 0x05, 0xf0,
0x2b, 0x38, 0xd4, 0x2a, 0x38, 0x9e, 0x5a, 0x56
);
DEFINE_HEX_XDR_NETOBJ(camellia128_cts_cmac_Ke,
0x64, 0xdf, 0x83, 0xf8, 0x5a, 0x53, 0x2f, 0x17,
0x57, 0x7d, 0x8c, 0x37, 0x03, 0x57, 0x96, 0xab
);
DEFINE_HEX_XDR_NETOBJ(camellia128_cts_cmac_Ki,
0x3e, 0x4f, 0xbd, 0xf3, 0x0f, 0xb8, 0x25, 0x9c,
0x42, 0x5c, 0xb6, 0xc9, 0x6f, 0x1f, 0x46, 0x35
);
DEFINE_HEX_XDR_NETOBJ(camellia256_cts_cmac_basekey,
0xb9, 0xd6, 0x82, 0x8b, 0x20, 0x56, 0xb7, 0xbe,
0x65, 0x6d, 0x88, 0xa1, 0x23, 0xb1, 0xfa, 0xc6,
0x82, 0x14, 0xac, 0x2b, 0x72, 0x7e, 0xcf, 0x5f,
0x69, 0xaf, 0xe0, 0xc4, 0xdf, 0x2a, 0x6d, 0x2c
);
DEFINE_HEX_XDR_NETOBJ(camellia256_cts_cmac_Kc,
0xe4, 0x67, 0xf9, 0xa9, 0x55, 0x2b, 0xc7, 0xd3,
0x15, 0x5a, 0x62, 0x20, 0xaf, 0x9c, 0x19, 0x22,
0x0e, 0xee, 0xd4, 0xff, 0x78, 0xb0, 0xd1, 0xe6,
0xa1, 0x54, 0x49, 0x91, 0x46, 0x1a, 0x9e, 0x50
);
DEFINE_HEX_XDR_NETOBJ(camellia256_cts_cmac_Ke,
0x41, 0x2a, 0xef, 0xc3, 0x62, 0xa7, 0x28, 0x5f,
0xc3, 0x96, 0x6c, 0x6a, 0x51, 0x81, 0xe7, 0x60,
0x5a, 0xe6, 0x75, 0x23, 0x5b, 0x6d, 0x54, 0x9f,
0xbf, 0xc9, 0xab, 0x66, 0x30, 0xa4, 0xc6, 0x04
);
DEFINE_HEX_XDR_NETOBJ(camellia256_cts_cmac_Ki,
0xfa, 0x62, 0x4f, 0xa0, 0xe5, 0x23, 0x99, 0x3f,
0xa3, 0x88, 0xae, 0xfd, 0xc6, 0x7e, 0x67, 0xeb,
0xcd, 0x8c, 0x08, 0xe8, 0xa0, 0x24, 0x6b, 0x1d,
0x73, 0xb0, 0xd1, 0xdd, 0x9f, 0xc5, 0x82, 0xb0
);
DEFINE_HEX_XDR_NETOBJ(usage_checksum,
0x00, 0x00, 0x00, 0x02, KEY_USAGE_SEED_CHECKSUM
);
DEFINE_HEX_XDR_NETOBJ(usage_encryption,
0x00, 0x00, 0x00, 0x02, KEY_USAGE_SEED_ENCRYPTION
);
DEFINE_HEX_XDR_NETOBJ(usage_integrity,
0x00, 0x00, 0x00, 0x02, KEY_USAGE_SEED_INTEGRITY
);
static const struct gss_krb5_test_param rfc6803_kdf_test_params[] = {
{
.desc = "Derive Kc subkey for camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.base_key = &camellia128_cts_cmac_basekey,
.usage = &usage_checksum,
.expected_result = &camellia128_cts_cmac_Kc,
},
{
.desc = "Derive Ke subkey for camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.base_key = &camellia128_cts_cmac_basekey,
.usage = &usage_encryption,
.expected_result = &camellia128_cts_cmac_Ke,
},
{
.desc = "Derive Ki subkey for camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.base_key = &camellia128_cts_cmac_basekey,
.usage = &usage_integrity,
.expected_result = &camellia128_cts_cmac_Ki,
},
{
.desc = "Derive Kc subkey for camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.base_key = &camellia256_cts_cmac_basekey,
.usage = &usage_checksum,
.expected_result = &camellia256_cts_cmac_Kc,
},
{
.desc = "Derive Ke subkey for camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.base_key = &camellia256_cts_cmac_basekey,
.usage = &usage_encryption,
.expected_result = &camellia256_cts_cmac_Ke,
},
{
.desc = "Derive Ki subkey for camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.base_key = &camellia256_cts_cmac_basekey,
.usage = &usage_integrity,
.expected_result = &camellia256_cts_cmac_Ki,
},
};
/* 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);
/*
* From RFC 6803 Section 10. Test vectors
*
* Sample encryptions (all using the default cipher state)
*
* Copyright (c) 2012 IETF Trust and the persons identified as the
* document authors. All rights reserved.
*
* Key usage values are from errata 4326 against RFC 6803.
*/
static const struct xdr_netobj rfc6803_enc_empty_plaintext = {
.len = 0,
};
DEFINE_STR_XDR_NETOBJ(rfc6803_enc_1byte_plaintext, "1");
DEFINE_STR_XDR_NETOBJ(rfc6803_enc_9byte_plaintext, "9 bytesss");
DEFINE_STR_XDR_NETOBJ(rfc6803_enc_13byte_plaintext, "13 bytes byte");
DEFINE_STR_XDR_NETOBJ(rfc6803_enc_30byte_plaintext,
"30 bytes bytes bytes bytes byt"
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test1_confounder,
0xb6, 0x98, 0x22, 0xa1, 0x9a, 0x6b, 0x09, 0xc0,
0xeb, 0xc8, 0x55, 0x7d, 0x1f, 0x1b, 0x6c, 0x0a
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test1_basekey,
0x1d, 0xc4, 0x6a, 0x8d, 0x76, 0x3f, 0x4f, 0x93,
0x74, 0x2b, 0xcb, 0xa3, 0x38, 0x75, 0x76, 0xc3
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test1_expected_result,
0xc4, 0x66, 0xf1, 0x87, 0x10, 0x69, 0x92, 0x1e,
0xdb, 0x7c, 0x6f, 0xde, 0x24, 0x4a, 0x52, 0xdb,
0x0b, 0xa1, 0x0e, 0xdc, 0x19, 0x7b, 0xdb, 0x80,
0x06, 0x65, 0x8c, 0xa3, 0xcc, 0xce, 0x6e, 0xb8
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test2_confounder,
0x6f, 0x2f, 0xc3, 0xc2, 0xa1, 0x66, 0xfd, 0x88,
0x98, 0x96, 0x7a, 0x83, 0xde, 0x95, 0x96, 0xd9
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test2_basekey,
0x50, 0x27, 0xbc, 0x23, 0x1d, 0x0f, 0x3a, 0x9d,
0x23, 0x33, 0x3f, 0x1c, 0xa6, 0xfd, 0xbe, 0x7c
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test2_expected_result,
0x84, 0x2d, 0x21, 0xfd, 0x95, 0x03, 0x11, 0xc0,
0xdd, 0x46, 0x4a, 0x3f, 0x4b, 0xe8, 0xd6, 0xda,
0x88, 0xa5, 0x6d, 0x55, 0x9c, 0x9b, 0x47, 0xd3,
0xf9, 0xa8, 0x50, 0x67, 0xaf, 0x66, 0x15, 0x59,
0xb8
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test3_confounder,
0xa5, 0xb4, 0xa7, 0x1e, 0x07, 0x7a, 0xee, 0xf9,
0x3c, 0x87, 0x63, 0xc1, 0x8f, 0xdb, 0x1f, 0x10
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test3_basekey,
0xa1, 0xbb, 0x61, 0xe8, 0x05, 0xf9, 0xba, 0x6d,
0xde, 0x8f, 0xdb, 0xdd, 0xc0, 0x5c, 0xde, 0xa0
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test3_expected_result,
0x61, 0x9f, 0xf0, 0x72, 0xe3, 0x62, 0x86, 0xff,
0x0a, 0x28, 0xde, 0xb3, 0xa3, 0x52, 0xec, 0x0d,
0x0e, 0xdf, 0x5c, 0x51, 0x60, 0xd6, 0x63, 0xc9,
0x01, 0x75, 0x8c, 0xcf, 0x9d, 0x1e, 0xd3, 0x3d,
0x71, 0xdb, 0x8f, 0x23, 0xaa, 0xbf, 0x83, 0x48,
0xa0
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test4_confounder,
0x19, 0xfe, 0xe4, 0x0d, 0x81, 0x0c, 0x52, 0x4b,
0x5b, 0x22, 0xf0, 0x18, 0x74, 0xc6, 0x93, 0xda
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test4_basekey,
0x2c, 0xa2, 0x7a, 0x5f, 0xaf, 0x55, 0x32, 0x24,
0x45, 0x06, 0x43, 0x4e, 0x1c, 0xef, 0x66, 0x76
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test4_expected_result,
0xb8, 0xec, 0xa3, 0x16, 0x7a, 0xe6, 0x31, 0x55,
0x12, 0xe5, 0x9f, 0x98, 0xa7, 0xc5, 0x00, 0x20,
0x5e, 0x5f, 0x63, 0xff, 0x3b, 0xb3, 0x89, 0xaf,
0x1c, 0x41, 0xa2, 0x1d, 0x64, 0x0d, 0x86, 0x15,
0xc9, 0xed, 0x3f, 0xbe, 0xb0, 0x5a, 0xb6, 0xac,
0xb6, 0x76, 0x89, 0xb5, 0xea
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test5_confounder,
0xca, 0x7a, 0x7a, 0xb4, 0xbe, 0x19, 0x2d, 0xab,
0xd6, 0x03, 0x50, 0x6d, 0xb1, 0x9c, 0x39, 0xe2
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test5_basekey,
0x78, 0x24, 0xf8, 0xc1, 0x6f, 0x83, 0xff, 0x35,
0x4c, 0x6b, 0xf7, 0x51, 0x5b, 0x97, 0x3f, 0x43
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test5_expected_result,
0xa2, 0x6a, 0x39, 0x05, 0xa4, 0xff, 0xd5, 0x81,
0x6b, 0x7b, 0x1e, 0x27, 0x38, 0x0d, 0x08, 0x09,
0x0c, 0x8e, 0xc1, 0xf3, 0x04, 0x49, 0x6e, 0x1a,
0xbd, 0xcd, 0x2b, 0xdc, 0xd1, 0xdf, 0xfc, 0x66,
0x09, 0x89, 0xe1, 0x17, 0xa7, 0x13, 0xdd, 0xbb,
0x57, 0xa4, 0x14, 0x6c, 0x15, 0x87, 0xcb, 0xa4,
0x35, 0x66, 0x65, 0x59, 0x1d, 0x22, 0x40, 0x28,
0x2f, 0x58, 0x42, 0xb1, 0x05, 0xa5
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test6_confounder,
0x3c, 0xbb, 0xd2, 0xb4, 0x59, 0x17, 0x94, 0x10,
0x67, 0xf9, 0x65, 0x99, 0xbb, 0x98, 0x92, 0x6c
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test6_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_enc_test6_expected_result,
0x03, 0x88, 0x6d, 0x03, 0x31, 0x0b, 0x47, 0xa6,
0xd8, 0xf0, 0x6d, 0x7b, 0x94, 0xd1, 0xdd, 0x83,
0x7e, 0xcc, 0xe3, 0x15, 0xef, 0x65, 0x2a, 0xff,
0x62, 0x08, 0x59, 0xd9, 0x4a, 0x25, 0x92, 0x66
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test7_confounder,
0xde, 0xf4, 0x87, 0xfc, 0xeb, 0xe6, 0xde, 0x63,
0x46, 0xd4, 0xda, 0x45, 0x21, 0xbb, 0xa2, 0xd2
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test7_basekey,
0x1b, 0x97, 0xfe, 0x0a, 0x19, 0x0e, 0x20, 0x21,
0xeb, 0x30, 0x75, 0x3e, 0x1b, 0x6e, 0x1e, 0x77,
0xb0, 0x75, 0x4b, 0x1d, 0x68, 0x46, 0x10, 0x35,
0x58, 0x64, 0x10, 0x49, 0x63, 0x46, 0x38, 0x33
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test7_expected_result,
0x2c, 0x9c, 0x15, 0x70, 0x13, 0x3c, 0x99, 0xbf,
0x6a, 0x34, 0xbc, 0x1b, 0x02, 0x12, 0x00, 0x2f,
0xd1, 0x94, 0x33, 0x87, 0x49, 0xdb, 0x41, 0x35,
0x49, 0x7a, 0x34, 0x7c, 0xfc, 0xd9, 0xd1, 0x8a,
0x12
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test8_confounder,
0xad, 0x4f, 0xf9, 0x04, 0xd3, 0x4e, 0x55, 0x53,
0x84, 0xb1, 0x41, 0x00, 0xfc, 0x46, 0x5f, 0x88
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test8_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_enc_test8_expected_result,
0x9c, 0x6d, 0xe7, 0x5f, 0x81, 0x2d, 0xe7, 0xed,
0x0d, 0x28, 0xb2, 0x96, 0x35, 0x57, 0xa1, 0x15,
0x64, 0x09, 0x98, 0x27, 0x5b, 0x0a, 0xf5, 0x15,
0x27, 0x09, 0x91, 0x3f, 0xf5, 0x2a, 0x2a, 0x9c,
0x8e, 0x63, 0xb8, 0x72, 0xf9, 0x2e, 0x64, 0xc8,
0x39
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test9_confounder,
0xcf, 0x9b, 0xca, 0x6d, 0xf1, 0x14, 0x4e, 0x0c,
0x0a, 0xf9, 0xb8, 0xf3, 0x4c, 0x90, 0xd5, 0x14
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test9_basekey,
0xb0, 0x38, 0xb1, 0x32, 0xcd, 0x8e, 0x06, 0x61,
0x22, 0x67, 0xfa, 0xb7, 0x17, 0x00, 0x66, 0xd8,
0x8a, 0xec, 0xcb, 0xa0, 0xb7, 0x44, 0xbf, 0xc6,
0x0d, 0xc8, 0x9b, 0xca, 0x18, 0x2d, 0x07, 0x15
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test9_expected_result,
0xee, 0xec, 0x85, 0xa9, 0x81, 0x3c, 0xdc, 0x53,
0x67, 0x72, 0xab, 0x9b, 0x42, 0xde, 0xfc, 0x57,
0x06, 0xf7, 0x26, 0xe9, 0x75, 0xdd, 0xe0, 0x5a,
0x87, 0xeb, 0x54, 0x06, 0xea, 0x32, 0x4c, 0xa1,
0x85, 0xc9, 0x98, 0x6b, 0x42, 0xaa, 0xbe, 0x79,
0x4b, 0x84, 0x82, 0x1b, 0xee
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test10_confounder,
0x64, 0x4d, 0xef, 0x38, 0xda, 0x35, 0x00, 0x72,
0x75, 0x87, 0x8d, 0x21, 0x68, 0x55, 0xe2, 0x28
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test10_basekey,
0xcc, 0xfc, 0xd3, 0x49, 0xbf, 0x4c, 0x66, 0x77,
0xe8, 0x6e, 0x4b, 0x02, 0xb8, 0xea, 0xb9, 0x24,
0xa5, 0x46, 0xac, 0x73, 0x1c, 0xf9, 0xbf, 0x69,
0x89, 0xb9, 0x96, 0xe7, 0xd6, 0xbf, 0xbb, 0xa7
);
DEFINE_HEX_XDR_NETOBJ(rfc6803_enc_test10_expected_result,
0x0e, 0x44, 0x68, 0x09, 0x85, 0x85, 0x5f, 0x2d,
0x1f, 0x18, 0x12, 0x52, 0x9c, 0xa8, 0x3b, 0xfd,
0x8e, 0x34, 0x9d, 0xe6, 0xfd, 0x9a, 0xda, 0x0b,
0xaa, 0xa0, 0x48, 0xd6, 0x8e, 0x26, 0x5f, 0xeb,
0xf3, 0x4a, 0xd1, 0x25, 0x5a, 0x34, 0x49, 0x99,
0xad, 0x37, 0x14, 0x68, 0x87, 0xa6, 0xc6, 0x84,
0x57, 0x31, 0xac, 0x7f, 0x46, 0x37, 0x6a, 0x05,
0x04, 0xcd, 0x06, 0x57, 0x14, 0x74
);
static const struct gss_krb5_test_param rfc6803_encrypt_test_params[] = {
{
.desc = "Encrypt empty plaintext with camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.constant = 0,
.base_key = &rfc6803_enc_test1_basekey,
.plaintext = &rfc6803_enc_empty_plaintext,
.confounder = &rfc6803_enc_test1_confounder,
.expected_result = &rfc6803_enc_test1_expected_result,
},
{
.desc = "Encrypt 1 byte with camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.constant = 1,
.base_key = &rfc6803_enc_test2_basekey,
.plaintext = &rfc6803_enc_1byte_plaintext,
.confounder = &rfc6803_enc_test2_confounder,
.expected_result = &rfc6803_enc_test2_expected_result,
},
{
.desc = "Encrypt 9 bytes with camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.constant = 2,
.base_key = &rfc6803_enc_test3_basekey,
.plaintext = &rfc6803_enc_9byte_plaintext,
.confounder = &rfc6803_enc_test3_confounder,
.expected_result = &rfc6803_enc_test3_expected_result,
},
{
.desc = "Encrypt 13 bytes with camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.constant = 3,
.base_key = &rfc6803_enc_test4_basekey,
.plaintext = &rfc6803_enc_13byte_plaintext,
.confounder = &rfc6803_enc_test4_confounder,
.expected_result = &rfc6803_enc_test4_expected_result,
},
{
.desc = "Encrypt 30 bytes with camellia128-cts-cmac",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.constant = 4,
.base_key = &rfc6803_enc_test5_basekey,
.plaintext = &rfc6803_enc_30byte_plaintext,
.confounder = &rfc6803_enc_test5_confounder,
.expected_result = &rfc6803_enc_test5_expected_result,
},
{
.desc = "Encrypt empty plaintext with camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.constant = 0,
.base_key = &rfc6803_enc_test6_basekey,
.plaintext = &rfc6803_enc_empty_plaintext,
.confounder = &rfc6803_enc_test6_confounder,
.expected_result = &rfc6803_enc_test6_expected_result,
},
{
.desc = "Encrypt 1 byte with camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.constant = 1,
.base_key = &rfc6803_enc_test7_basekey,
.plaintext = &rfc6803_enc_1byte_plaintext,
.confounder = &rfc6803_enc_test7_confounder,
.expected_result = &rfc6803_enc_test7_expected_result,
},
{
.desc = "Encrypt 9 bytes with camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.constant = 2,
.base_key = &rfc6803_enc_test8_basekey,
.plaintext = &rfc6803_enc_9byte_plaintext,
.confounder = &rfc6803_enc_test8_confounder,
.expected_result = &rfc6803_enc_test8_expected_result,
},
{
.desc = "Encrypt 13 bytes with camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.constant = 3,
.base_key = &rfc6803_enc_test9_basekey,
.plaintext = &rfc6803_enc_13byte_plaintext,
.confounder = &rfc6803_enc_test9_confounder,
.expected_result = &rfc6803_enc_test9_expected_result,
},
{
.desc = "Encrypt 30 bytes with camellia256-cts-cmac",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.constant = 4,
.base_key = &rfc6803_enc_test10_basekey,
.plaintext = &rfc6803_enc_30byte_plaintext,
.confounder = &rfc6803_enc_test10_confounder,
.expected_result = &rfc6803_enc_test10_expected_result,
},
};
/* Creates the function rfc6803_encrypt_gen_params */
KUNIT_ARRAY_PARAM(rfc6803_encrypt, rfc6803_encrypt_test_params,
gss_krb5_get_desc);
static void rfc6803_encrypt_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
struct crypto_sync_skcipher *cts_tfm, *cbc_tfm;
const struct gss_krb5_enctype *gk5e;
struct xdr_netobj Ke, Ki, checksum;
u8 usage_data[GSS_KRB5_K5CLENGTH];
struct xdr_netobj usage = {
.data = usage_data,
.len = sizeof(usage_data),
};
struct crypto_ahash *ahash_tfm;
unsigned int blocksize;
struct xdr_buf buf;
void *text;
size_t len;
u32 err;
/* Arrange */
gk5e = gss_krb5_lookup_enctype(param->enctype);
if (!gk5e)
kunit_skip(test, "Encryption type is not available");
memset(usage_data, 0, sizeof(usage_data));
usage.data[3] = param->constant;
Ke.len = gk5e->Ke_length;
Ke.data = kunit_kzalloc(test, Ke.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, Ke.data);
usage.data[4] = KEY_USAGE_SEED_ENCRYPTION;
err = gk5e->derive_key(gk5e, param->base_key, &Ke, &usage, GFP_KERNEL);
KUNIT_ASSERT_EQ(test, err, 0);
cbc_tfm = crypto_alloc_sync_skcipher(gk5e->aux_cipher, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cbc_tfm);
err = crypto_sync_skcipher_setkey(cbc_tfm, Ke.data, Ke.len);
KUNIT_ASSERT_EQ(test, err, 0);
cts_tfm = crypto_alloc_sync_skcipher(gk5e->encrypt_name, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cts_tfm);
err = crypto_sync_skcipher_setkey(cts_tfm, Ke.data, Ke.len);
KUNIT_ASSERT_EQ(test, err, 0);
blocksize = crypto_sync_skcipher_blocksize(cts_tfm);
len = param->confounder->len + param->plaintext->len + blocksize;
text = kunit_kzalloc(test, len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, text);
memcpy(text, param->confounder->data, param->confounder->len);
memcpy(text + param->confounder->len, param->plaintext->data,
param->plaintext->len);
memset(&buf, 0, sizeof(buf));
buf.head[0].iov_base = text;
buf.head[0].iov_len = param->confounder->len + param->plaintext->len;
buf.len = buf.head[0].iov_len;
checksum.len = gk5e->cksumlength;
checksum.data = kunit_kzalloc(test, checksum.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, checksum.data);
Ki.len = gk5e->Ki_length;
Ki.data = kunit_kzalloc(test, Ki.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, Ki.data);
usage.data[4] = KEY_USAGE_SEED_INTEGRITY;
err = gk5e->derive_key(gk5e, param->base_key, &Ki,
&usage, GFP_KERNEL);
KUNIT_ASSERT_EQ(test, err, 0);
ahash_tfm = crypto_alloc_ahash(gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ahash_tfm);
err = crypto_ahash_setkey(ahash_tfm, Ki.data, Ki.len);
KUNIT_ASSERT_EQ(test, err, 0);
/* Act */
err = gss_krb5_checksum(ahash_tfm, NULL, 0, &buf, 0, &checksum);
KUNIT_ASSERT_EQ(test, err, 0);
err = krb5_cbc_cts_encrypt(cts_tfm, cbc_tfm, 0, &buf, NULL, NULL, 0);
KUNIT_ASSERT_EQ(test, err, 0);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test, param->expected_result->len,
buf.len + checksum.len,
"ciphertext length mismatch");
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data,
buf.head[0].iov_base, buf.len), 0,
"encrypted result mismatch");
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data +
(param->expected_result->len - checksum.len),
checksum.data, checksum.len), 0,
"HMAC mismatch");
crypto_free_ahash(ahash_tfm);
crypto_free_sync_skcipher(cts_tfm);
crypto_free_sync_skcipher(cbc_tfm);
}
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,
},
{
.name = "RFC 6803 encryption",
.run_case = rfc6803_encrypt_case,
.generate_params = rfc6803_encrypt_gen_params,
},
{}
};
static struct kunit_suite rfc6803_suite = {
.name = "RFC 6803 suite",
.test_cases = rfc6803_test_cases,
};
/*
* From RFC 8009 Appendix A. Test Vectors
*
* Sample results for SHA-2 enctype key derivation
*
* This test material is copyright (c) 2016 IETF Trust and the
* persons identified as the document authors. All rights reserved.
*/
DEFINE_HEX_XDR_NETOBJ(aes128_cts_hmac_sha256_128_basekey,
0x37, 0x05, 0xd9, 0x60, 0x80, 0xc1, 0x77, 0x28,
0xa0, 0xe8, 0x00, 0xea, 0xb6, 0xe0, 0xd2, 0x3c
);
DEFINE_HEX_XDR_NETOBJ(aes128_cts_hmac_sha256_128_Kc,
0xb3, 0x1a, 0x01, 0x8a, 0x48, 0xf5, 0x47, 0x76,
0xf4, 0x03, 0xe9, 0xa3, 0x96, 0x32, 0x5d, 0xc3
);
DEFINE_HEX_XDR_NETOBJ(aes128_cts_hmac_sha256_128_Ke,
0x9b, 0x19, 0x7d, 0xd1, 0xe8, 0xc5, 0x60, 0x9d,
0x6e, 0x67, 0xc3, 0xe3, 0x7c, 0x62, 0xc7, 0x2e
);
DEFINE_HEX_XDR_NETOBJ(aes128_cts_hmac_sha256_128_Ki,
0x9f, 0xda, 0x0e, 0x56, 0xab, 0x2d, 0x85, 0xe1,
0x56, 0x9a, 0x68, 0x86, 0x96, 0xc2, 0x6a, 0x6c
);
DEFINE_HEX_XDR_NETOBJ(aes256_cts_hmac_sha384_192_basekey,
0x6d, 0x40, 0x4d, 0x37, 0xfa, 0xf7, 0x9f, 0x9d,
0xf0, 0xd3, 0x35, 0x68, 0xd3, 0x20, 0x66, 0x98,
0x00, 0xeb, 0x48, 0x36, 0x47, 0x2e, 0xa8, 0xa0,
0x26, 0xd1, 0x6b, 0x71, 0x82, 0x46, 0x0c, 0x52
);
DEFINE_HEX_XDR_NETOBJ(aes256_cts_hmac_sha384_192_Kc,
0xef, 0x57, 0x18, 0xbe, 0x86, 0xcc, 0x84, 0x96,
0x3d, 0x8b, 0xbb, 0x50, 0x31, 0xe9, 0xf5, 0xc4,
0xba, 0x41, 0xf2, 0x8f, 0xaf, 0x69, 0xe7, 0x3d
);
DEFINE_HEX_XDR_NETOBJ(aes256_cts_hmac_sha384_192_Ke,
0x56, 0xab, 0x22, 0xbe, 0xe6, 0x3d, 0x82, 0xd7,
0xbc, 0x52, 0x27, 0xf6, 0x77, 0x3f, 0x8e, 0xa7,
0xa5, 0xeb, 0x1c, 0x82, 0x51, 0x60, 0xc3, 0x83,
0x12, 0x98, 0x0c, 0x44, 0x2e, 0x5c, 0x7e, 0x49
);
DEFINE_HEX_XDR_NETOBJ(aes256_cts_hmac_sha384_192_Ki,
0x69, 0xb1, 0x65, 0x14, 0xe3, 0xcd, 0x8e, 0x56,
0xb8, 0x20, 0x10, 0xd5, 0xc7, 0x30, 0x12, 0xb6,
0x22, 0xc4, 0xd0, 0x0f, 0xfc, 0x23, 0xed, 0x1f
);
static const struct gss_krb5_test_param rfc8009_kdf_test_params[] = {
{
.desc = "Derive Kc subkey for aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.usage = &usage_checksum,
.expected_result = &aes128_cts_hmac_sha256_128_Kc,
},
{
.desc = "Derive Ke subkey for aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.usage = &usage_encryption,
.expected_result = &aes128_cts_hmac_sha256_128_Ke,
},
{
.desc = "Derive Ki subkey for aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.usage = &usage_integrity,
.expected_result = &aes128_cts_hmac_sha256_128_Ki,
},
{
.desc = "Derive Kc subkey for aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.usage = &usage_checksum,
.expected_result = &aes256_cts_hmac_sha384_192_Kc,
},
{
.desc = "Derive Ke subkey for aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.usage = &usage_encryption,
.expected_result = &aes256_cts_hmac_sha384_192_Ke,
},
{
.desc = "Derive Ki subkey for aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.usage = &usage_integrity,
.expected_result = &aes256_cts_hmac_sha384_192_Ki,
},
};
/* Creates the function rfc8009_kdf_gen_params */
KUNIT_ARRAY_PARAM(rfc8009_kdf, rfc8009_kdf_test_params, gss_krb5_get_desc);
/*
* From RFC 8009 Appendix A. Test Vectors
*
* These sample checksums use the above sample key derivation results,
* including use of the same base-key and key usage values.
*
* This test material is copyright (c) 2016 IETF Trust and the
* persons identified as the document authors. All rights reserved.
*/
DEFINE_HEX_XDR_NETOBJ(rfc8009_checksum_plaintext,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_checksum_test1_expected_result,
0xd7, 0x83, 0x67, 0x18, 0x66, 0x43, 0xd6, 0x7b,
0x41, 0x1c, 0xba, 0x91, 0x39, 0xfc, 0x1d, 0xee
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_checksum_test2_expected_result,
0x45, 0xee, 0x79, 0x15, 0x67, 0xee, 0xfc, 0xa3,
0x7f, 0x4a, 0xc1, 0xe0, 0x22, 0x2d, 0xe8, 0x0d,
0x43, 0xc3, 0xbf, 0xa0, 0x66, 0x99, 0x67, 0x2a
);
static const struct gss_krb5_test_param rfc8009_checksum_test_params[] = {
{
.desc = "Checksum with aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.usage = &usage_checksum,
.plaintext = &rfc8009_checksum_plaintext,
.expected_result = &rfc8009_checksum_test1_expected_result,
},
{
.desc = "Checksum with aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.usage = &usage_checksum,
.plaintext = &rfc8009_checksum_plaintext,
.expected_result = &rfc8009_checksum_test2_expected_result,
},
};
/* Creates the function rfc8009_checksum_gen_params */
KUNIT_ARRAY_PARAM(rfc8009_checksum, rfc8009_checksum_test_params,
gss_krb5_get_desc);
/*
* From RFC 8009 Appendix A. Test Vectors
*
* Sample encryptions (all using the default cipher state):
* --------------------------------------------------------
*
* These sample encryptions use the above sample key derivation results,
* including use of the same base-key and key usage values.
*
* This test material is copyright (c) 2016 IETF Trust and the
* persons identified as the document authors. All rights reserved.
*/
static const struct xdr_netobj rfc8009_enc_empty_plaintext = {
.len = 0,
};
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_short_plaintext,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_block_plaintext,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_long_plaintext,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test1_confounder,
0x7e, 0x58, 0x95, 0xea, 0xf2, 0x67, 0x24, 0x35,
0xba, 0xd8, 0x17, 0xf5, 0x45, 0xa3, 0x71, 0x48
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test1_expected_result,
0xef, 0x85, 0xfb, 0x89, 0x0b, 0xb8, 0x47, 0x2f,
0x4d, 0xab, 0x20, 0x39, 0x4d, 0xca, 0x78, 0x1d
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test1_expected_hmac,
0xad, 0x87, 0x7e, 0xda, 0x39, 0xd5, 0x0c, 0x87,
0x0c, 0x0d, 0x5a, 0x0a, 0x8e, 0x48, 0xc7, 0x18
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test2_confounder,
0x7b, 0xca, 0x28, 0x5e, 0x2f, 0xd4, 0x13, 0x0f,
0xb5, 0x5b, 0x1a, 0x5c, 0x83, 0xbc, 0x5b, 0x24
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test2_expected_result,
0x84, 0xd7, 0xf3, 0x07, 0x54, 0xed, 0x98, 0x7b,
0xab, 0x0b, 0xf3, 0x50, 0x6b, 0xeb, 0x09, 0xcf,
0xb5, 0x54, 0x02, 0xce, 0xf7, 0xe6
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test2_expected_hmac,
0x87, 0x7c, 0xe9, 0x9e, 0x24, 0x7e, 0x52, 0xd1,
0x6e, 0xd4, 0x42, 0x1d, 0xfd, 0xf8, 0x97, 0x6c
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test3_confounder,
0x56, 0xab, 0x21, 0x71, 0x3f, 0xf6, 0x2c, 0x0a,
0x14, 0x57, 0x20, 0x0f, 0x6f, 0xa9, 0x94, 0x8f
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test3_expected_result,
0x35, 0x17, 0xd6, 0x40, 0xf5, 0x0d, 0xdc, 0x8a,
0xd3, 0x62, 0x87, 0x22, 0xb3, 0x56, 0x9d, 0x2a,
0xe0, 0x74, 0x93, 0xfa, 0x82, 0x63, 0x25, 0x40,
0x80, 0xea, 0x65, 0xc1, 0x00, 0x8e, 0x8f, 0xc2
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test3_expected_hmac,
0x95, 0xfb, 0x48, 0x52, 0xe7, 0xd8, 0x3e, 0x1e,
0x7c, 0x48, 0xc3, 0x7e, 0xeb, 0xe6, 0xb0, 0xd3
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test4_confounder,
0xa7, 0xa4, 0xe2, 0x9a, 0x47, 0x28, 0xce, 0x10,
0x66, 0x4f, 0xb6, 0x4e, 0x49, 0xad, 0x3f, 0xac
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test4_expected_result,
0x72, 0x0f, 0x73, 0xb1, 0x8d, 0x98, 0x59, 0xcd,
0x6c, 0xcb, 0x43, 0x46, 0x11, 0x5c, 0xd3, 0x36,
0xc7, 0x0f, 0x58, 0xed, 0xc0, 0xc4, 0x43, 0x7c,
0x55, 0x73, 0x54, 0x4c, 0x31, 0xc8, 0x13, 0xbc,
0xe1, 0xe6, 0xd0, 0x72, 0xc1
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test4_expected_hmac,
0x86, 0xb3, 0x9a, 0x41, 0x3c, 0x2f, 0x92, 0xca,
0x9b, 0x83, 0x34, 0xa2, 0x87, 0xff, 0xcb, 0xfc
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test5_confounder,
0xf7, 0x64, 0xe9, 0xfa, 0x15, 0xc2, 0x76, 0x47,
0x8b, 0x2c, 0x7d, 0x0c, 0x4e, 0x5f, 0x58, 0xe4
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test5_expected_result,
0x41, 0xf5, 0x3f, 0xa5, 0xbf, 0xe7, 0x02, 0x6d,
0x91, 0xfa, 0xf9, 0xbe, 0x95, 0x91, 0x95, 0xa0
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test5_expected_hmac,
0x58, 0x70, 0x72, 0x73, 0xa9, 0x6a, 0x40, 0xf0,
0xa0, 0x19, 0x60, 0x62, 0x1a, 0xc6, 0x12, 0x74,
0x8b, 0x9b, 0xbf, 0xbe, 0x7e, 0xb4, 0xce, 0x3c
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test6_confounder,
0xb8, 0x0d, 0x32, 0x51, 0xc1, 0xf6, 0x47, 0x14,
0x94, 0x25, 0x6f, 0xfe, 0x71, 0x2d, 0x0b, 0x9a
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test6_expected_result,
0x4e, 0xd7, 0xb3, 0x7c, 0x2b, 0xca, 0xc8, 0xf7,
0x4f, 0x23, 0xc1, 0xcf, 0x07, 0xe6, 0x2b, 0xc7,
0xb7, 0x5f, 0xb3, 0xf6, 0x37, 0xb9
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test6_expected_hmac,
0xf5, 0x59, 0xc7, 0xf6, 0x64, 0xf6, 0x9e, 0xab,
0x7b, 0x60, 0x92, 0x23, 0x75, 0x26, 0xea, 0x0d,
0x1f, 0x61, 0xcb, 0x20, 0xd6, 0x9d, 0x10, 0xf2
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test7_confounder,
0x53, 0xbf, 0x8a, 0x0d, 0x10, 0x52, 0x65, 0xd4,
0xe2, 0x76, 0x42, 0x86, 0x24, 0xce, 0x5e, 0x63
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test7_expected_result,
0xbc, 0x47, 0xff, 0xec, 0x79, 0x98, 0xeb, 0x91,
0xe8, 0x11, 0x5c, 0xf8, 0xd1, 0x9d, 0xac, 0x4b,
0xbb, 0xe2, 0xe1, 0x63, 0xe8, 0x7d, 0xd3, 0x7f,
0x49, 0xbe, 0xca, 0x92, 0x02, 0x77, 0x64, 0xf6
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test7_expected_hmac,
0x8c, 0xf5, 0x1f, 0x14, 0xd7, 0x98, 0xc2, 0x27,
0x3f, 0x35, 0xdf, 0x57, 0x4d, 0x1f, 0x93, 0x2e,
0x40, 0xc4, 0xff, 0x25, 0x5b, 0x36, 0xa2, 0x66
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test8_confounder,
0x76, 0x3e, 0x65, 0x36, 0x7e, 0x86, 0x4f, 0x02,
0xf5, 0x51, 0x53, 0xc7, 0xe3, 0xb5, 0x8a, 0xf1
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test8_expected_result,
0x40, 0x01, 0x3e, 0x2d, 0xf5, 0x8e, 0x87, 0x51,
0x95, 0x7d, 0x28, 0x78, 0xbc, 0xd2, 0xd6, 0xfe,
0x10, 0x1c, 0xcf, 0xd5, 0x56, 0xcb, 0x1e, 0xae,
0x79, 0xdb, 0x3c, 0x3e, 0xe8, 0x64, 0x29, 0xf2,
0xb2, 0xa6, 0x02, 0xac, 0x86
);
DEFINE_HEX_XDR_NETOBJ(rfc8009_enc_test8_expected_hmac,
0xfe, 0xf6, 0xec, 0xb6, 0x47, 0xd6, 0x29, 0x5f,
0xae, 0x07, 0x7a, 0x1f, 0xeb, 0x51, 0x75, 0x08,
0xd2, 0xc1, 0x6b, 0x41, 0x92, 0xe0, 0x1f, 0x62
);
static const struct gss_krb5_test_param rfc8009_encrypt_test_params[] = {
{
.desc = "Encrypt empty plaintext with aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.plaintext = &rfc8009_enc_empty_plaintext,
.confounder = &rfc8009_enc_test1_confounder,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.expected_result = &rfc8009_enc_test1_expected_result,
.expected_hmac = &rfc8009_enc_test1_expected_hmac,
},
{
.desc = "Encrypt short plaintext with aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.plaintext = &rfc8009_enc_short_plaintext,
.confounder = &rfc8009_enc_test2_confounder,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.expected_result = &rfc8009_enc_test2_expected_result,
.expected_hmac = &rfc8009_enc_test2_expected_hmac,
},
{
.desc = "Encrypt block plaintext with aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.plaintext = &rfc8009_enc_block_plaintext,
.confounder = &rfc8009_enc_test3_confounder,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.expected_result = &rfc8009_enc_test3_expected_result,
.expected_hmac = &rfc8009_enc_test3_expected_hmac,
},
{
.desc = "Encrypt long plaintext with aes128-cts-hmac-sha256-128",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.plaintext = &rfc8009_enc_long_plaintext,
.confounder = &rfc8009_enc_test4_confounder,
.base_key = &aes128_cts_hmac_sha256_128_basekey,
.expected_result = &rfc8009_enc_test4_expected_result,
.expected_hmac = &rfc8009_enc_test4_expected_hmac,
},
{
.desc = "Encrypt empty plaintext with aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.plaintext = &rfc8009_enc_empty_plaintext,
.confounder = &rfc8009_enc_test5_confounder,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.expected_result = &rfc8009_enc_test5_expected_result,
.expected_hmac = &rfc8009_enc_test5_expected_hmac,
},
{
.desc = "Encrypt short plaintext with aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.plaintext = &rfc8009_enc_short_plaintext,
.confounder = &rfc8009_enc_test6_confounder,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.expected_result = &rfc8009_enc_test6_expected_result,
.expected_hmac = &rfc8009_enc_test6_expected_hmac,
},
{
.desc = "Encrypt block plaintext with aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.plaintext = &rfc8009_enc_block_plaintext,
.confounder = &rfc8009_enc_test7_confounder,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.expected_result = &rfc8009_enc_test7_expected_result,
.expected_hmac = &rfc8009_enc_test7_expected_hmac,
},
{
.desc = "Encrypt long plaintext with aes256-cts-hmac-sha384-192",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.plaintext = &rfc8009_enc_long_plaintext,
.confounder = &rfc8009_enc_test8_confounder,
.base_key = &aes256_cts_hmac_sha384_192_basekey,
.expected_result = &rfc8009_enc_test8_expected_result,
.expected_hmac = &rfc8009_enc_test8_expected_hmac,
},
};
/* Creates the function rfc8009_encrypt_gen_params */
KUNIT_ARRAY_PARAM(rfc8009_encrypt, rfc8009_encrypt_test_params,
gss_krb5_get_desc);
static void rfc8009_encrypt_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
struct crypto_sync_skcipher *cts_tfm, *cbc_tfm;
const struct gss_krb5_enctype *gk5e;
struct xdr_netobj Ke, Ki, checksum;
u8 usage_data[GSS_KRB5_K5CLENGTH];
struct xdr_netobj usage = {
.data = usage_data,
.len = sizeof(usage_data),
};
struct crypto_ahash *ahash_tfm;
struct xdr_buf buf;
void *text;
size_t len;
u32 err;
/* Arrange */
gk5e = gss_krb5_lookup_enctype(param->enctype);
if (!gk5e)
kunit_skip(test, "Encryption type is not available");
*(__be32 *)usage.data = cpu_to_be32(2);
Ke.len = gk5e->Ke_length;
Ke.data = kunit_kzalloc(test, Ke.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, Ke.data);
usage.data[4] = KEY_USAGE_SEED_ENCRYPTION;
err = gk5e->derive_key(gk5e, param->base_key, &Ke,
&usage, GFP_KERNEL);
KUNIT_ASSERT_EQ(test, err, 0);
cbc_tfm = crypto_alloc_sync_skcipher(gk5e->aux_cipher, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cbc_tfm);
err = crypto_sync_skcipher_setkey(cbc_tfm, Ke.data, Ke.len);
KUNIT_ASSERT_EQ(test, err, 0);
cts_tfm = crypto_alloc_sync_skcipher(gk5e->encrypt_name, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cts_tfm);
err = crypto_sync_skcipher_setkey(cts_tfm, Ke.data, Ke.len);
KUNIT_ASSERT_EQ(test, err, 0);
len = param->confounder->len + param->plaintext->len;
text = kunit_kzalloc(test, len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, text);
memcpy(text, param->confounder->data, param->confounder->len);
memcpy(text + param->confounder->len, param->plaintext->data,
param->plaintext->len);
memset(&buf, 0, sizeof(buf));
buf.head[0].iov_base = text;
buf.head[0].iov_len = param->confounder->len + param->plaintext->len;
buf.len = buf.head[0].iov_len;
checksum.len = gk5e->cksumlength;
checksum.data = kunit_kzalloc(test, checksum.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, checksum.data);
Ki.len = gk5e->Ki_length;
Ki.data = kunit_kzalloc(test, Ki.len, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, Ki.data);
usage.data[4] = KEY_USAGE_SEED_INTEGRITY;
err = gk5e->derive_key(gk5e, param->base_key, &Ki,
&usage, GFP_KERNEL);
KUNIT_ASSERT_EQ(test, err, 0);
ahash_tfm = crypto_alloc_ahash(gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ahash_tfm);
err = crypto_ahash_setkey(ahash_tfm, Ki.data, Ki.len);
KUNIT_ASSERT_EQ(test, err, 0);
/* Act */
err = krb5_cbc_cts_encrypt(cts_tfm, cbc_tfm, 0, &buf, NULL, NULL, 0);
KUNIT_ASSERT_EQ(test, err, 0);
err = krb5_etm_checksum(cts_tfm, ahash_tfm, &buf, 0, &checksum);
KUNIT_ASSERT_EQ(test, err, 0);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test,
param->expected_result->len, buf.len,
"ciphertext length mismatch");
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->expected_result->data,
buf.head[0].iov_base,
param->expected_result->len), 0,
"ciphertext mismatch");
KUNIT_EXPECT_EQ_MSG(test, memcmp(param->expected_hmac->data,
checksum.data,
checksum.len), 0,
"HMAC mismatch");
crypto_free_ahash(ahash_tfm);
crypto_free_sync_skcipher(cts_tfm);
crypto_free_sync_skcipher(cbc_tfm);
}
static struct kunit_case rfc8009_test_cases[] = {
{
.name = "RFC 8009 key derivation",
.run_case = kdf_case,
.generate_params = rfc8009_kdf_gen_params,
},
{
.name = "RFC 8009 checksum",
.run_case = checksum_case,
.generate_params = rfc8009_checksum_gen_params,
},
{
.name = "RFC 8009 encryption",
.run_case = rfc8009_encrypt_case,
.generate_params = rfc8009_encrypt_gen_params,
},
{}
};
static struct kunit_suite rfc8009_suite = {
.name = "RFC 8009 suite",
.test_cases = rfc8009_test_cases,
};
/*
* Encryption self-tests
*/
DEFINE_STR_XDR_NETOBJ(encrypt_selftest_plaintext,
"This is the plaintext for the encryption self-test.");
static const struct gss_krb5_test_param encrypt_selftest_params[] = {
{
.desc = "aes128-cts-hmac-sha1-96 encryption self-test",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &encrypt_selftest_plaintext,
},
{
.desc = "aes256-cts-hmac-sha1-96 encryption self-test",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA1_96,
.Ke = &rfc3962_encryption_key,
.plaintext = &encrypt_selftest_plaintext,
},
{
.desc = "camellia128-cts-cmac encryption self-test",
.enctype = ENCTYPE_CAMELLIA128_CTS_CMAC,
.Ke = &camellia128_cts_cmac_Ke,
.plaintext = &encrypt_selftest_plaintext,
},
{
.desc = "camellia256-cts-cmac encryption self-test",
.enctype = ENCTYPE_CAMELLIA256_CTS_CMAC,
.Ke = &camellia256_cts_cmac_Ke,
.plaintext = &encrypt_selftest_plaintext,
},
{
.desc = "aes128-cts-hmac-sha256-128 encryption self-test",
.enctype = ENCTYPE_AES128_CTS_HMAC_SHA256_128,
.Ke = &aes128_cts_hmac_sha256_128_Ke,
.plaintext = &encrypt_selftest_plaintext,
},
{
.desc = "aes256-cts-hmac-sha384-192 encryption self-test",
.enctype = ENCTYPE_AES256_CTS_HMAC_SHA384_192,
.Ke = &aes256_cts_hmac_sha384_192_Ke,
.plaintext = &encrypt_selftest_plaintext,
},
};
/* Creates the function encrypt_selftest_gen_params */
KUNIT_ARRAY_PARAM(encrypt_selftest, encrypt_selftest_params,
gss_krb5_get_desc);
/*
* Encrypt and decrypt plaintext, and ensure the input plaintext
* matches the output plaintext. A confounder is not added in this
* case.
*/
static void encrypt_selftest_case(struct kunit *test)
{
const struct gss_krb5_test_param *param = test->param_value;
struct crypto_sync_skcipher *cts_tfm, *cbc_tfm;
const struct gss_krb5_enctype *gk5e;
struct xdr_buf buf;
void *text;
int err;
/* Arrange */
gk5e = gss_krb5_lookup_enctype(param->enctype);
if (!gk5e)
kunit_skip(test, "Encryption type is not available");
cbc_tfm = crypto_alloc_sync_skcipher(gk5e->aux_cipher, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cbc_tfm);
err = crypto_sync_skcipher_setkey(cbc_tfm, param->Ke->data, param->Ke->len);
KUNIT_ASSERT_EQ(test, err, 0);
cts_tfm = crypto_alloc_sync_skcipher(gk5e->encrypt_name, 0, 0);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cts_tfm);
err = crypto_sync_skcipher_setkey(cts_tfm, param->Ke->data, param->Ke->len);
KUNIT_ASSERT_EQ(test, err, 0);
text = kunit_kzalloc(test, roundup(param->plaintext->len,
crypto_sync_skcipher_blocksize(cbc_tfm)),
GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, text);
memcpy(text, param->plaintext->data, param->plaintext->len);
memset(&buf, 0, sizeof(buf));
buf.head[0].iov_base = text;
buf.head[0].iov_len = param->plaintext->len;
buf.len = buf.head[0].iov_len;
/* Act */
err = krb5_cbc_cts_encrypt(cts_tfm, cbc_tfm, 0, &buf, NULL, NULL, 0);
KUNIT_ASSERT_EQ(test, err, 0);
err = krb5_cbc_cts_decrypt(cts_tfm, cbc_tfm, 0, &buf);
KUNIT_ASSERT_EQ(test, err, 0);
/* Assert */
KUNIT_EXPECT_EQ_MSG(test,
param->plaintext->len, buf.len,
"length mismatch");
KUNIT_EXPECT_EQ_MSG(test,
memcmp(param->plaintext->data,
buf.head[0].iov_base, buf.len), 0,
"plaintext mismatch");
crypto_free_sync_skcipher(cts_tfm);
crypto_free_sync_skcipher(cbc_tfm);
}
static struct kunit_case encryption_test_cases[] = {
{
.name = "Encryption self-tests",
.run_case = encrypt_selftest_case,
.generate_params = encrypt_selftest_gen_params,
},
{}
};
static struct kunit_suite encryption_test_suite = {
.name = "Encryption test suite",
.test_cases = encryption_test_cases,
};
kunit_test_suites(&rfc3961_suite,
&rfc3962_suite,
&rfc6803_suite,
&rfc8009_suite,
&encryption_test_suite);
MODULE_DESCRIPTION("Test RPCSEC GSS Kerberos 5 functions");
MODULE_LICENSE("GPL");
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