EVP_CIPHER_CTX_free(ctx);
return res;
}
+
+/*-
+ * Weak and semi weak keys as taken from
+ * %A D.W. Davies
+ * %A W.L. Price
+ * %T Security for Computer Networks
+ * %I John Wiley & Sons
+ * %D 1984
+ */
+static struct {
+ const DES_cblock key;
+ int expect;
+} weak_keys[] = {
+ /* weak keys */
+ {{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 1 },
+ {{0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE}, 1 },
+ {{0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E}, 1 },
+ {{0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1}, 1 },
+ /* semi-weak keys */
+ {{0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE}, 1 },
+ {{0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01}, 1 },
+ {{0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1}, 1 },
+ {{0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E}, 1 },
+ {{0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1}, 1 },
+ {{0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01}, 1 },
+ {{0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE}, 1 },
+ {{0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E}, 1 },
+ {{0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E}, 1 },
+ {{0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01}, 1 },
+ {{0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE}, 1 },
+ {{0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1}, 1 },
+ /* good key */
+ {{0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF}, 0 }
+};
+
+static int test_des_weak_keys(int n)
+{
+ const_DES_cblock *key = (unsigned char (*)[8])weak_keys[n].key;
+
+ return TEST_int_eq(DES_is_weak_key(key), weak_keys[n].expect);
+}
+
+static struct {
+ const DES_cblock key;
+ int expect;
+} bad_parity_keys[] = {
+ {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 0 },
+ {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, 0 },
+ /* Perturb each byte in turn to create even parity */
+ {{0x48, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF}, 0 },
+ {{0x49, 0xE8, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF}, 0 },
+ {{0x49, 0xE9, 0x5C, 0x6D, 0x4C, 0xA2, 0x29, 0xBF}, 0 },
+ {{0x49, 0xE9, 0x5D, 0x7D, 0x4C, 0xA2, 0x29, 0xBF}, 0 },
+ {{0x49, 0xE9, 0x5D, 0x6D, 0x5C, 0xA2, 0x29, 0xBF}, 0 },
+ {{0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA3, 0x29, 0xBF}, 0 },
+ {{0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x39, 0xBF}, 0 },
+ {{0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBE}, 0 },
+ /* Odd parity version of above */
+ {{0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF}, 1 }
+};
+
+static int test_des_check_bad_parity(int n)
+{
+ const_DES_cblock *key = (unsigned char (*)[8])bad_parity_keys[n].key;
+
+ return TEST_int_eq(DES_check_key_parity(key), bad_parity_keys[n].expect);
+}
#endif
int setup_tests(void)
ADD_ALL_TESTS(test_input_align, 4);
ADD_ALL_TESTS(test_output_align, 4);
ADD_ALL_TESTS(test_des_key_wrap, OSSL_NELEM(test_des_key_wrap_sizes));
+ ADD_ALL_TESTS(test_des_weak_keys, OSSL_NELEM(weak_keys));
+ ADD_ALL_TESTS(test_des_check_bad_parity, OSSL_NELEM(bad_parity_keys));
#endif
return 1;
}