Search: Home Bugtraq Vulnerabilities Mailing Lists Jobs Tools Vista
Crypto
Hashing Question Jan 13 2008 01:27AM
Kelly Robinson (caliana1989 gmail com) (2 replies)
RE: Hashing Question Jan 14 2008 02:33PM
Christian Campbell (ccampbell brueggers com)

> Lets say I have a set of records, each of which is 24 bytes long, I
> want to hash with MD2.
>
> However, I think it is wasteful to hash 24 bytes of data using a
> 128-bit message digest, so I decide to use only the lower 32 bits of
> data produced by the hash algorithm.
>
> Does this have any security implications?

Homework problems....eh? If you were upfront about disclosing this was a
homework assignment, people would be more willing to point you in the right
direction. But to look for a direct answer isn't teaching you anything.

Christian Campbell
Systems Engineer
 
Bruegger's Enterprises Inc.
Desk: 802-652-9270
Cell: 802-734-5023
Fax: 802-660-4034 
Email: ccampbell at brueggers dot com
 
PGP Public Key available via PGP keyservers or
http://www2.brueggers.com/pgp/ccampbell.html
 
"Computer Science is no more about computers
than astronomy is about telescopes."
--E. Dijkstra

0? *?H?÷
 ?0?1 0 +0? *?H?÷
 ?Ü0?d0?Í ?Ñ$?7í òcêÕ3É0
 *?H?÷
0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0
070705202351Z
080704202351Z0I10UThawte Freemail Member1&0$ *?H?÷
 ccampbell (at) brueggers (dot) com0 [email concealed]?0
 *?H?÷
0?À­|[|f ~±¸x?|¾5?æ1ë?üÒ6?7K4¦ù½I¾Ð,´¸B#Ñ?,^¶¢S^$ÿlvú,_
×ց4µ?³yÊTOË5<ìKf&Ú]1S?§*6Mðýò?5ª»±R܍ùwbÛÿÒßDh?ä§»7ÀÕ(3)sØ©ÖkK
£4020"U0ccampbell (at) brueggers (dot) com0 [email concealed] Uÿ00
 *?H?÷
¼·ñ íîm?yÞÚĶKÔã2ì'd7ïäs.?Ì3,???¨u?Å(ü²9ÇÕBtâ3Í(MJ?vØïâ>èL À
ÿô)?u?p¸ÅJõþª`ÆÇüE?Â.?bÍ/?Ö)k???}Ó'fqÎÇG0%r±¸7ßd³ ?7M? >ô0?-0?? 0
 *?H?÷
0Ñ1 0 UZA10U Western Cape10U Cape Town10U
Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *?H?÷
 personal-freemail (at) thawte (dot) com0 [email concealed]
960101000000Z
201231235959Z0Ñ1 0 UZA10U Western Cape10U Cape Town10U
Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *?H?÷
 personal-freemail (at) thawte (dot) com0 [email concealed]?0
 *?H?÷
0?Ôi×Ô°?d[qéGØ Q¶êr?°?^}-
{ß?%u(t:B,c'??{Kï~??ê£Ý¹Î?dÂnD¬|æèMq@8¦£?xöù??^­êÀ^vëÙ£]nz| ¥KU)??&Õj»8$j?DZڣ??ýyÛåZĹ£00Uÿ0ÿ0
 *?H?÷
Çì?~Nøõ?¥gb*¤ðM`Ðo`Xa¬&»R5\Ï0û¨J??bB#?ôºd?¬G)ߝ?^Òl`q\¢¬Üy
ãçnGµ
(èä?ýô¦Ù|±øÜ_#& ??sÐÞC©?%òæ?/Êþ¦«?u? ÝQ?käøÑÎw¢0??0?¨ 
0
 *?H?÷
0Ñ1 0 UZA10U Western Cape10U Cape Town10U
Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *?H?÷
 personal-freemail (at) thawte (dot) com0 [email concealed]
030717000000Z
130716235959Z0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0?0
 *?H?÷
0?Ä¦<UsUûN¹Ê?ZhÀupßéÿ£ì½Íõ[òv½ :aò¿QÎÔåP
0×cZ,?p?ÝÉð+?Zª?qV˯< çñ?6$*Ï+Õó?w=¾+þ»>¿@?d×§¦»?eÑÅ*T?H§¶Ñ<
a@dr`·û£?0?0Uÿ0ÿ0CU<0:08 6 4?2http://crl.tha
wte.com/ThawtePersonalFreemailCA.crl0 U0)U"0 ¤010UPrivateLabel2-1380
 *?H?÷
H?ÑP?ê .Ì
£f¬g¯¬¾Â¡C??L!¸ø6ª-?6/ÀôP ?p<ý­áabÃÙ:~?±?Å ?t?%P?bÇÛ'qW%Ý©?9?? Oe_?Ú÷÷?ÖÆN®öê4å[5MwãV!x?Ü!5Þ$±ÓFÿ]_eO1?ø0?ô0v0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA?Ñ$?7í òcêÕ3É0 + ?Ø0 *?H?÷
 1  *?H?÷
0 *?H?÷
 1
080114143311Z0# *?H?÷
 12í^dÂÏ
ÄÿH-y!C­9ÿ{ü0g *?H?÷
 1Z0X0
*?H?÷
0*?H?÷
?0
*?H?÷
@0+0
*?H?÷
(0+0
*?H?÷
0? +?71x0v0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA?Ñ$?7í òcêÕ3É0? *?H?÷
  1x v0b1 0 UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA?Ñ$?7í òcêÕ3É0
 *?H?÷
? ¡ØÆÛHî~ÏÁÙ{9¨g+½rµý>Ûì(Qй? 'âXU? CW͏Þ̧9Ø9ôÓ³x<ñÍÝ?IÃsìzâ?ܯª÷ ´ô¿¶¤Þ2? ¸Pñ:q ?sÅ%µ?ÖB5°Ð½$Á¶©"?Oªö-Büºl¸|5¦

[ reply ]
Re: Hashing Question Jan 14 2008 08:38AM
Christoph Mayer (mayer tm uka de)







 

Privacy Statement
Copyright 2007, SecurityFocus