| /* |
| * Copyright (C) 2015 Google, Inc. |
| * |
| * This software is licensed under the terms of the GNU General Public |
| * License version 2, as published by the Free Software Foundation, and |
| * may be copied, distributed, and modified under those terms. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef __INCLUDE_B64_DECODE_H__ |
| #define __INCLUDE_B64_DECODE_H__ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| /* |
| * A function to convert a buffer of base64 format data into its source. |
| * |
| * The user provides output buffer of the size guaranteed to fit the result. |
| * |
| * Returns the size of the decoded data or zero if invalid charactes were |
| * encountered in the input buffer. |
| */ |
| size_t b64_decode(const uint8_t *input_data, |
| size_t input_length, |
| uint8_t *output_data); |
| |
| /* A macro to derive decoded size of a base64 encoded blob. */ |
| #define B64_DECODED_SIZE(encoded_size) (((encoded_size) * 3)/4) |
| |
| #endif |