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OS/2 Shareware BBS: 10 Tools
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IDEA
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IDEA.H
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C/C++ Source or Header
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1995-09-27
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872b
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35 lines
#ifndef _IDEA_DEFINED
#define _IDEA_DEFINED
/* Defines for the PGP-style types used in IDEA.C */
#define byte unsigned char
#define word16 unsigned short int
#define word32 unsigned long int
/* Macros from PGP */
#define burn(x) memset( x, 0, sizeof( x ) )
/* IDEA algorithm constants */
#define IDEAKEYSIZE 16
#define IDEABLOCKSIZE 8
#define IDEAROUNDS 8
#define IDEAKEYLEN ( 6 * IDEAROUNDS + 4 )
/* Routines used to implement the IDEA encryption */
void ideaExpandKey( byte const *userkey, word16 *EK );
#ifdef _DCC
void ideaInvertKey( word16 *EK, word16 DK[IDEAKEYLEN] );
void ideaCipher( byte (inbuf[8]), byte (outbuf[8]), word16 *key );
#else
void ideaInvertKey( word16 const *EK, word16 DK[IDEAKEYLEN] );
void ideaCipher( byte const (inbuf[8]), byte (outbuf[8]), word16 const *key );
#endif
#endif /* _IDEA_DEFINED */