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#include <u.h>
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#include <libc.h>
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#include <authsrv.h>
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#define	CHAR(x)		*p++ = f->x
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#define	SHORT(x)	p[0] = f->x; p[1] = f->x>>8; p += 2
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#define	VLONG(q)	p[0] = (q); p[1] = (q)>>8; p[2] = (q)>>16; p[3] = (q)>>24; p += 4
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#define	LONG(x)		VLONG(f->x)
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#define	STRING(x,n)	memmove(p, f->x, n); p += n
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int
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convA2M(Authenticator *f, char *ap, char *key)
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{
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	int n;
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	uchar *p;
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	p = (uchar*)ap;
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	CHAR(num);
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	STRING(chal, CHALLEN);
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	LONG(id);
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	n = p - (uchar*)ap;
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	if(key)
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		encrypt(key, ap, n);
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	return n;
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}