base64.hpp

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/*
 * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef M5_UNIT_CRYPTO_UTILITY_BASE64_HPP
#define M5_UNIT_CRYPTO_UTILITY_BASE64_HPP
 
#include <cstdint>
 
namespace m5 {
namespace utility {
 
uint32_t encode_base64(char* out, const uint32_t olen, const uint8_t* buf, const uint32_t blen, const uint8_t line_len,
                       const bool urlEncode, const bool padding);
 
inline uint32_t encodeBase64(char* out, const uint32_t olen, const uint8_t* buf, const uint32_t blen)
{
    return encode_base64(out, olen, buf, blen, 64, false, true);
}
inline uint32_t encodeBase64URL(char* out, const uint32_t olen, const uint8_t* buf, const uint32_t blen)
{
    return encode_base64(out, olen, buf, blen, 0, true, false);
}
 
uint32_t decode_base64(uint8_t* out, const uint32_t olen, const char* buf, const uint32_t blen, const bool urlEncode,
                       const bool padding);
 
inline uint32_t decodeBase64(uint8_t* out, const uint32_t olen, const char* buf, const uint32_t blen)
{
    return decode_base64(out, olen, buf, blen, false, true);
}
 
inline uint32_t decodeBase64URL(uint8_t* out, const uint32_t olen, const char* buf, const uint32_t blen)
{
    return decode_base64(out, olen, buf, blen, true, false);
}
 
}  // namespace utility
}  // namespace m5
#endif