73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
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###############################################################################
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#
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# Temboo Arduino library
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#
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# Copyright 2017, Temboo Inc.
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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,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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# either express or implied. See the License for the specific
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# language governing permissions and limitations under the License.
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#
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###############################################################################
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*/
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#ifndef TMBMD5_H_
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#define TMBMD5_H_
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#include <stdint.h>
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#include "TembooGlobal.h"
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#define MD5_HASH_SIZE_BITS (128)
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#define MD5_HASH_SIZE_BYTES (MD5_HASH_SIZE_BITS/8)
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#define MD5_BLOCK_SIZE_BITS (512)
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#define MD5_BLOCK_SIZE_BYTES (MD5_BLOCK_SIZE_BITS/8)
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#define ROL(x, y) ( (((uint32_t)(x)<<(uint32_t)((y)&31)) | (((uint32_t)(x)&0xFFFFFFFFUL)>>(uint32_t)(32-((y)&31)))) & 0xFFFFFFFFUL)
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class MD5 {
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public:
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MD5();
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void init();
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int process(const uint8_t* in, uint32_t inlen);
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int finish(uint8_t* hash);
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enum {
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MD5_OK = 0,
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MD5_ERROR,
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MD5_INVALID_ARG,
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MD5_FAIL_TESTVECTOR
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};
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private:
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uint64_t m_msgLengthBits;
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uint32_t m_state[4];
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uint32_t m_bufLength;
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uint8_t m_buf[64];
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int compress(const uint8_t* buf);
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inline uint32_t F_(uint32_t x, uint32_t y, uint32_t z) { return (z ^ (x & (y ^ z))); }
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inline uint32_t G_(uint32_t x, uint32_t y, uint32_t z) { return (y ^ (z & (y ^ x))); }
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inline uint32_t H_(uint32_t x, uint32_t y, uint32_t z) { return (x^y^z); }
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inline uint32_t I_(uint32_t x, uint32_t y, uint32_t z) { return (y^(x|(~z))); }
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inline void FF(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t M, uint32_t s, uint32_t t) { *a = (*a + F_(b,c,d) + M + t); *a = ROL(*a, s) + b; }
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inline void GG(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t M, uint32_t s, uint32_t t) { *a = (*a + G_(b,c,d) + M + t); *a = ROL(*a, s) + b; }
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inline void HH(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t M, uint32_t s, uint32_t t) { *a = (*a + H_(b,c,d) + M + t); *a = ROL(*a, s) + b; }
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inline void II(uint32_t* a, uint32_t b, uint32_t c, uint32_t d, uint32_t M, uint32_t s, uint32_t t) { *a = (*a + I_(b,c,d) + M + t); *a = ROL(*a, s) + b; }
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};
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#endif
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