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/* * RFC 1521 base64 encoding/decoding * * Copyright (C) 2018, Nordic Semiconductor ASA * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Adapted for Zephyr by Carles Cufi (carles.cufi@nordicsemi.no) * - Removed mbedtls_ prefixes * - Reworked coding style */ #ifndef ZEPHYR_INCLUDE_BASE64_H_ #define ZEPHYR_INCLUDE_BASE64_H_ #include <stddef.h> #include <zephyr/types.h> #ifdef __cplusplus extern "C" { #endif /** * @brief Encode a buffer into base64 format * * @param dst destination buffer * @param dlen size of the destination buffer * @param olen number of bytes written * @param src source buffer * @param slen amount of data to be encoded * * @return 0 if successful, or -ENOMEM if the buffer is too small. * *olen is always updated to reflect the amount * of data that has (or would have) been written. * If that length cannot be represented, then no data is * written to the buffer and *olen is set to the maximum * length representable as a size_t. * * @note Call this function with dlen = 0 to obtain the * required buffer size in *olen */ int base64_encode(u8_t *dst, size_t dlen, size_t *olen, const u8_t *src, size_t slen); /** * @brief Decode a base64-formatted buffer * * @param dst destination buffer (can be NULL for checking size) * @param dlen size of the destination buffer * @param olen number of bytes written * @param src source buffer * @param slen amount of data to be decoded * * @return 0 if successful, -ENOMEM, or -EINVAL if the input data is * not correct. *olen is always updated to reflect the amount * of data that has (or would have) been written. * * @note Call this function with *dst = NULL or dlen = 0 to obtain * the required buffer size in *olen */ int base64_decode(u8_t *dst, size_t dlen, size_t *olen, const u8_t *src, size_t slen); #ifdef __cplusplus } #endif #endif /* ZEPHYR_INCLUDE_BASE64_H_ */ |