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54 lines
No EOL
2 KiB
C
54 lines
No EOL
2 KiB
C
/*
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* This code implements the MD5 message-digest algorithm.
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* The algorithm is due to Ron Rivest. This code was
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* written by Colin Plumb in 1993, no copyright is claimed.
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* This code is in the public domain; do with it what you wish.
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*
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* Equivalent code is available from RSA Data Security, Inc.
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* This code has been tested against that, and is equivalent,
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* except that you don't need to include two pages of legalese
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* with every copy.
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*
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* To compute the message digest of a chunk of bytes, declare an
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* MD5Context structure, pass it to MD5Init, call MD5Update as
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* needed on buffers full of bytes, and then call MD5Final, which
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* will fill a supplied 16-byte array with the digest.
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*
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* An implementation of HMAC-MD5 (originally for OpenJK) is also
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* provided, and also released into the public domain.
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*/
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#pragma once
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#include "q_shared.h"
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typedef struct MD5Context {
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uint32_t buf[4];
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uint32_t bits[2];
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unsigned char in[64];
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} MD5_CTX;
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void MD5Init(struct MD5Context *ctx);
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void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len);
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void MD5Final(struct MD5Context *ctx, unsigned char *digest);
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const size_t MD5_BLOCK_SIZE = 64;
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const size_t MD5_DIGEST_SIZE = 16;
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typedef struct {
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struct MD5Context md5Context;
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unsigned char iKeyPad[MD5_BLOCK_SIZE];
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unsigned char oKeyPad[MD5_BLOCK_SIZE];
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} hmacMD5Context_t;
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// Initialize a new HMAC-MD5 construct using the specified secret key.
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void HMAC_MD5_Init(hmacMD5Context_t *ctx, unsigned char const *key, unsigned int keylen);
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// Update the HMAC message with len number of bytes from the given buffer.
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void HMAC_MD5_Update(hmacMD5Context_t *ctx, unsigned char const *buf, unsigned int len);
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// Finalize the HMAC calculation and fill the given buffer with the digest bytes.
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// 'digest' must point to a buffer that can hold MD5_DIGEST_SIZE bytes!
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void HMAC_MD5_Final(hmacMD5Context_t *ctx, unsigned char *digest);
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// Reset the context to begin working on a new message, using the same secret key as previously initialised.
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void HMAC_MD5_Reset(hmacMD5Context_t *ctx); |