55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
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#ifndef __HMAC_H__
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#define __HMAC_H__
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#ifndef RSA32API
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#define RSA32API __stdcall
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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// include "md5.h" before this
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typedef struct {
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MD5_CTX context_ipad;
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MD5_CTX context_opad;
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} HMACMD5_CTX;
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// Initialize an HMAC context with a session key
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// Afterword, context can be used to sign messages with the session key
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//
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void
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RSA32API
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HMACMD5Init(
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HMACMD5_CTX * pCtx, // IN, OUT -- the context to initialize
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unsigned char *pKey, // IN -- the session key
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unsigned int cKey // IN -- session key length
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);
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// Update the signature of a message
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// takes a fragment of a message, updates signature for that fragment
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void
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RSA32API
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HMACMD5Update(
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HMACMD5_CTX * pCtx, // IN, OUT -- context of signature to update
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unsigned char *pMsg, // IN -- message fragment
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unsigned int cMsg // IN -- message length
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);
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// Get the signature out of the context, reset for next message
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//
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void
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RSA32API
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HMACMD5Final(
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HMACMD5_CTX * pCtx, // IN, OUT -- the context
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unsigned char Hash[MD5DIGESTLEN] // OUT -- the signature
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);
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#ifdef __cplusplus
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}
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#endif
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#endif // __HMAC_H__
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