c-libp2p/include/libp2p/crypto/encoding/base64.h
2016-12-05 07:13:27 -05:00

42 lines
1.7 KiB
C

#ifndef base64_h
#define base64_h
#include <stdio.h>
/**
* encode using base64
* @param input_data the data to be encoded
* @param input_length the length of the input data
* @param output_data where the data is to be stored
* @param max_output_length the max size of the output_data
* @param bytes_written the number of bytes written to output_data
* @returns true(1) on success, otherwise false
*/
int libp2p_crypto_encoding_base64_encode(const unsigned char* input_data, size_t input_length, unsigned char* output_data, size_t max_output_length, size_t* bytes_written);
/**
* calculate the max length in bytes of an encoding of n source bytes
* @param encoded_size the size of the encoded string
* @returns the maximum size in bytes had the string been decoded
*/
size_t libp2p_crypto_encoding_base64_encode_size(size_t input_length);
/**
* decode something that was encoded as base64
* @param input_data the data to decode
* @param input_length the length of the input data
* @param output_data the buffer to store the output
* @param max_output_length the length of the output buffer
* @param bytes_written the number of bytes written to output_data
* @returns a pointer to the decoded data
*/
int libp2p_crypto_encoding_base64_decode(const unsigned char* input_data, size_t input_length, unsigned char* output_data, size_t max_output_length, size_t* bytes_written);
/**
* calculate the max length in bytes of a decoding of n source bytes
* @param decoded_size the size of the incoming string to be encoded
* @returns the maximum size in bytes had the string been encoded
*/
size_t libp2p_crypto_encoding_base64_decode_size(size_t input_length);
#endif /* base64_h */