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Date: Mon, 22 Mar 1999 06:55:28 +0900 (JST)
Message-Id: <199903212155.GAA00212@hiloshi.seikyou.ne.jp>
References: <199903190250.LAA22983@komachi.phys.s.u-tokyo.ac.jp>
From: =?ISO-2022-JP?B?GyRCNmIkc0VEGyhC?= <vanitas@ma3.seikyou.ne.jp>
To: man-jp-reviewer@jp.freebsd.org
In-reply-to: Satoru Koizumi's message of "Fri, 19 Mar 1999 11:50:26 +0900"
	     <199903190250.LAA22983@komachi.phys.s.u-tokyo.ac.jp>
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Subject: [man-jp-reviewer 1237] Re: random.4
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$B6b$sED$G$9!#(B

[man-jp-reviewer 1225]: $B>.(B $B@t(B $B$5$s(B
>  random.4 $B$NLu$G$9!#5W$7$V$j$KK]Lu$7$F$_$^$7$?!#$h$m$7$/$*4j$$$7$^$9!#(B

$B%3%a%s%H(B $B%X%C%@$,L5$/$J$C$F$^$9$M!#(B
$BIU$1$H$+$J$$$HG[I[5vBz>r7o$K0cH?$7$A$c$&$N$G$O!D!#(B(^^;)

$B?t;z$O9THV9f(B($B3g8LFb$O86J8$N9THV9f(B)$B$G$9!#(B
$B!|%A%'%C%/E@(B
$B!&?o=j(B:
   entropy$B!V%(%s%H%m%T!<!W(B
   $B!V8lKv$ND92;%k!<%k!W$K=>$($P!""*!V%(%s%H%m%T!W$G$7$g$&$+!#(B
$B!&(B13(51):
   Besides the obvious cryptographic uses,
   $B!XL@$i$+$J0E9f$G$NMxMQ$K2C$(!"!Y(B
 $B"*!X0E9f$G$NMxMQ$O$b$A$m$s!"!Y(B
   $B$J$I$O$$$+$,$G$7$g$&$+!#(B
$B!&(B15(52):
   $B!X%i%s%@%`$J$@$1$G$J$/967b<T$,M=A[$9$k$N$,Fq$7$$(B
     $B?t$,K>$^$7$$$=$NB>$N$H$3$m$G$bNI$$$b$N$G$9!#!Y(B
   $BI=8=$N0c$$$G$9$,!"(B
   $B!X$=$NB>%i%s%@%`$J$@$1$G$J$/967b<T$KM=A[$5$l$K$/$$(B
     $B?t$,K>$^$l$k>l9g$K$bM-MQ$G$9!#!Y(B
   $B$J$I$O$$$+$,$G$7$g$&$+!#(B
$B!&(B21(60):
   ,and for some applications this is not acceptable.
   $B!X$=$7$F$"$k%"%W%j%1!<%7%g%s$K$H$C$F$O!"(B
     $B$3$l$O<u$1F~$l$i$l$^$;$s!#!Y(B
 $B"*!X$=$N$?$a!"%"%W%j%1!<%7%g%s$K$h$C$F$O(B
     $B$=$N$h$&$JMp?tNs$O;HMQ$G$-$^$;$s!#!Y(B
   $B$J$I$O$$$+$,$G$7$g$&$+!#(B
$B!&(B39:
   $B!VGx$9!W(B
   $BFI$_$,Fq$7$$5$$,$9$k$N$G!""*!V$5$i$9!W$O$$$+$,$G$7$g$&!#(B
$B!&(B47:
   $B!V%<%m!W"*!V(B 0 $B!W(B
$B!&(B52:
   $B!V!K!W"*!V(B)$B!W(B
$B!&(B50(98):
   hashing MD5 with a counter and an undisclosed secret
   $B!X%+%&%s%?$H$P$l$F$$$J$$HkL)$N(B MD5 $B%O%C%7%s%0!Y(B
   $BC1$J$k5?Ld$J$s$G$9$,!"$3$3$N(B undisclosed secret $B$C$F(B
   $B6qBNE*$K$O2?$N$3$H$J$s$G$7$g$&!D!)(B
   MD5 $B$NHkL)80$+2?$+$N$3$H$G$7$g$&$+!)(B
$B!&(B62(108):
   the requested number of random bytes
   $B!VMW5a$5$l$??t$NMp?t!W(B
 $B"*!V!D!D!D!D!D%P%$%H?t$NMp?t!W(B
$B!&(B69(111):
   character devices
   $B!V%-%c%i%/%?%G%P%$%9!W(B
 $B"*!V!D!D!D!D!D7?%G%P%$%9!W(B (wordlist.txt $B$h$j(B)
$B!&(B70:
   $B86J8$KL5$$6u9T$,$"$j$^$9$,!"(B
   $B=PNO$NBN:[$,JQ$o$C$F$7$^$&$N$G(B
   $B:o=|$7$?$[$&$,NI$$$H;W$$$^$9!#(B
$B!&(B74(118):
   e.g. for key generation
   $B!VNc$($P!"%-!<$N@8@.!W(B
   $B$3$3$N(B key $B$O0E9f80$J$I$N$3$H$G$7$g$&$+$i!"(B
   $B!V80!W$N$[$&$,NI$5$=$&$K;W$$$^$9!#(B
$B!&(B71(118):
   as it will only return a maximum of the number of
   bits of randomness (as estimated by the random number
   generator) contained in the entropy pool.
   $B!X:GBg$G$b%(%s%H%m%T!<$N$?$^$j>l$K4^$^$l$k(B
     ($BMp?t@8@.4o$K$h$jI>2A$5$l$?(B)$B%S%C%H?t$NMp?t(B
     $B$7$+JV$5$J$$$N$G!Y(B
   $B$3$3$G$O9bIJ<A$NMp?t$rJV$9$H$$$C$F$k$N$G!"(B
 $B"*!X%(%s%H%m%T!<$N$?$^$j>l$K4^$^$l$kMp?t$N(B
     ($BMp?t@8@.4o$K$h$kI>2A$N(B) $B:GBg$N%S%C%H?t$@$1$rJV$9$N$G!"!Y(B
   $B$H$$$C$?46$8$@$H;W$$$^$9!#(B ($B>o$K:GNI$NMp?t$r@8@.$9$k$H$$$&$3$H(B)
$B!&(B83(130):
   noise$B!V%N%$%:!W(B
   $B!V;(2;!W$H:.MQ$5$l$F$$$k$N$G!"(B
   $B$I$A$i$+$K9g$o$;$?$[$&$,NI$$$H;W$$$^$9!#(B
$B!&(B100(146):
   randomness a particular interrupt channel offers
   $B!XFCDj$N3d$j9~$_%A%c%s%M%k$,Ds6!$9$kMp?t!Y(B
   $B!X!D!D!D!D!D!D!D!D!D!D!D!D!D!D!D!D!D%i%s%@%`$5!Y(B
___________________________________________
$B6bED(B $B9@;J(B  email: vanitas@ma3.seikyou.ne.jp
