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/* 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
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