key import/export password handling example

Change-Id: I2b6da9307025e41e53dfa208c86c83bfc85ac22c

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 4cf4681..0d6f3e1 100644 (file)
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -50,6 +50,7 @@ BUILD_EXAMPLE("yaca-example-encrypt-gcm-ccm"  encrypt_aes_gcm_ccm.c)
 BUILD_EXAMPLE("yaca-example-sign"             sign.c)
 BUILD_EXAMPLE("yaca-example-key-exchange"     key_exchange.c)
 BUILD_EXAMPLE("yaca-example-key-impexp"       key_import_export.c)
+BUILD_EXAMPLE("yaca-example-key-password" key_password.c)
 
 INSTALL(FILES       ${COMMON_SOURCES}
         DESTINATION ${EXAMPLES_DIR})

diff --git a/examples/key_password.c b/examples/key_password.c
new file mode 100644 (file)
index 0000000..e3e20c2
--- /dev/null
+++ b/examples/key_password.c
@@ -0,0 +1,94 @@
+/*
+ *  Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Contact: Krzysztof Jackiewicz <k.jackiewicz@samsung.com>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <yaca/crypto.h>
+#include <yaca/key.h>
+#include <yaca/types.h>
+#include <yaca/error.h>
+#include "misc.h"
+#include "../src/debug.h"
+
+
+int main(int argc, char* argv[])
+{
+       yaca_debug_set_error_cb(debug_func);
+
+       yaca_key_h key = YACA_KEY_NULL;
+       char *k = NULL;
+       size_t kl;
+       int ret;
+       char *password = NULL;
+
+       ret = yaca_init();
+       if (ret != 0)
+               goto exit;
+
+       ret = yaca_key_gen(&key, YACA_KEY_TYPE_RSA_PRIV, YACA_KEY_1024BIT);
+       if (ret != 0)
+               goto exit;
+
+       ret = read_stdin_line("encryption pass: ", &password);
+       if (ret != 0)
+               goto exit;
+
+       ret = yaca_key_export(key, YACA_KEY_FORMAT_DEFAULT, YACA_KEY_FILE_FORMAT_PEM, password, &k, &kl);
+       if (ret != 0)
+               goto exit;
+
+       yaca_free(password);
+       yaca_key_free(key);
+       password = NULL;
+       key = YACA_KEY_NULL;
+
+       ret = yaca_key_import(&key, YACA_KEY_TYPE_RSA_PRIV, NULL, k, kl);
+       if (ret == YACA_ERROR_PASSWORD_INVALID) {
+               ret = read_stdin_line("decryption pass: ", &password);
+               if (ret != 0)
+                       goto exit;
+
+               ret = yaca_key_import(&key, YACA_KEY_TYPE_RSA_PRIV, password, k, kl);
+               if (ret == YACA_ERROR_PASSWORD_INVALID)
+                       printf("invalid password\n");
+
+               yaca_free(password);
+               password = NULL;
+       }
+
+       if (ret != 0)
+               goto exit;
+
+       yaca_free(k);
+       k = NULL;
+
+       ret = yaca_key_export(key, YACA_KEY_FORMAT_DEFAULT, YACA_KEY_FILE_FORMAT_PEM, NULL, &k, &kl);
+       if (ret != 0)
+               goto exit;
+
+       printf("%.*s", (int)kl, k);
+
+exit:
+       yaca_free(k);
+       yaca_free(password);
+       yaca_key_free(key);
+
+       yaca_exit();
+
+       return 0;
+}