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Line 9... Line 9...
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	int i;
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	int i;
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	uchar pad[Hmacblksz+1], innerdigest[256];
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	uchar pad[Hmacblksz+1], innerdigest[256];
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	if(xlen > sizeof(innerdigest))
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	if(xlen > sizeof(innerdigest))
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		return nil;
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		return nil;
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	if(klen > Hmacblksz)
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	if(klen > Hmacblksz){
- 
 
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		if(xlen > Hmacblksz)
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		return nil;
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			return nil;
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		(*x)(key, klen, innerdigest, nil);
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		key = innerdigest;
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		klen = xlen;
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	}
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	/* first time through */
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	/* first time through */
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	if(s == nil || s->seeded == 0){
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	if(s == nil || s->seeded == 0){
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		memset(pad, 0x36, Hmacblksz);
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		memset(pad, 0x36, Hmacblksz);
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		pad[Hmacblksz] = 0;
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		pad[Hmacblksz] = 0;