/* SPDX-License-Identifier: GPL-2.0-only */ #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 characters 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