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https://github.com/DarkFlippers/unleashed-firmware
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39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
// Base32 implementation
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//
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// Copyright 2010 Google Inc.
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// Author: Markus Gutschke
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Encode and decode from base32 encoding using the following alphabet:
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// ABCDEFGHIJKLMNOPQRSTUVWXYZ234567
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// This alphabet is documented in RFC 4648/3548
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//
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// We allow white-space and hyphens, but all other characters are considered
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// invalid.
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//
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// All functions return the number of output bytes or -1 on error. If the
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// output buffer is too small, the result will silently be truncated.
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#pragma once
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#include <stdint.h>
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/**
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* @brief Decodes Base-32 encoded bytes into plain bytes.
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* @param encoded Base-32 encoded bytes
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* @param[out] result result output buffer
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* @param bufSize result output buffer size
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* @return Decoded result length in bytes if successfully decoded; \c -1 otherwise
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*/
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int base32_decode(const uint8_t* encoded, uint8_t* result, int bufSize);
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