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;
};
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);
+ KUNIT_ASSERT_NOT_NULL(test, gk5e);
+
+ *(__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 = 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 = {
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