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   indra
   http://indra.linuxstudy.pe.kr
   [re] ¸®´ª½º»ó DES¾Ë°í¸®Áò(C·Î ±¸¼º)..¾î¶»°Ô ÄÄÆÄÀÏ ÇÏ´ÂÁö...

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_programming&no=136 [º¹»ç]


Ç»ÃĽýºÅÛ¿¡¼­ ±¸ÇöÇؼ­ ³»³õÀº ÄÚµå³×¿ä..
Àúµµ SEED ÂÊ ¾Ë°í¸®Áò Á» °øºÎÇÏ´À¶ó.. ¸¹ÀÌ ºÃ´Âµ¥..
ÀÏ´Ü Àú ¾Ë°í¸®ÁòÀº ENDIAN À̶ó´Â °³³äÀÌ Áß¿äÇÑ ºñÁßÀ» Â÷ÁöÇϹǷÎ
ÄÄÆÄÀϽÿ¡ -D ¿É¼ÇÀ¸·Î ÇØ´ç ENDIAN °ªÀ» Á¤ÇØÁÖ¼Å¾ß ÇÕ´Ï´Ù.
little endian °ú big endian, µÎ°¡ÁöÀÇ °æ¿ì°¡ Àִµ¥
intel ÇÁ·Î¼¼¼­¶ó¸é little endian ÀÔ´Ï´Ù.
´ÙÀ½°ú °°ÀÌ ÄÄÆÄÀÏ ÇÏ½Ã¸é µË´Ï´Ù.

[indra@indra des]$ gcc -o des des.c desenc.c test.c -DUSER_LITTLE_ENDIAN
test.c: In function `main':
test.c:463: warning: return type of `main' is not `int'
[indra@indra des]$ ./des
ERROR(CTR_USAGE_ERROR) :::: Invalid Number of Argument

Usage1 : -[T/S]   (Test Value/Test Speed)
Usage2 : -[E/D] -[ECB/CBC/OFB/CFB/ECBPAD/CBCPAD/OFBPAD/CFBPAD] infile outfile
            (file 'key.dat' contains UserKey and IV)
[indra@indra des]$

±×·³ ÁÁÀº ÇÏ·ç µÇ½Ã±æ..
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>¸®´ª½º ȯ°æÀ̶ó Á¶±Ý ´Ù¸¥ ¸ð¾çÀÎ°Í °°½À´Ï´Ù..
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>ÄÄÆÄÀÏ µÇ°Ô µµ¾Æ ÁÖ¼¼¿©....
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>¸®´ª½º¿Í C Ãʺ¸¿¡°Õ Á¤¸» ¾î·Á¿î ¹®Á¦ÀÔ´Ï´Ù...

  Hit : 5773     Date : 2003/10/06 03:53



    
hkpco Èæ.. ¾Ë°í¸®ÁòÀº ¾î·Á¿ö ^0^ 2003/10/06  
indra Âü°í·Î °ø½Ä ¹èÆ÷ó´Â <a href=http://securitytechnet.com target=_blank>http://securitytechnet.com</a> ¿©±â·Î ¾Ë°í ÀÖÀ¸¸ç, ÄÚµå ¹èÆ÷ÇϽŠȲȿ¼±´Ô²²¼­ °Ô½ÃÆÇÀÇ Áú¹®µéÀ» Ç®¾îÁֽô°ÍÀ¸·Î ¾Ë°í ÀÖ½À´Ï´Ù. 2003/10/06  
indra ÁÁÀº °á°ú ÀÖÀ¸½Ã±æ.. 2003/10/06  
msgon ´äº¯ Á¤¸» °¨»çÇÕ´Ï´Ù... 2003/10/09  
3086   ÇãÁ¢ÇÑ Áú¹®ÀÔ´Ï´Ù.[3]     blue_star
10/03 4530
3085   ¹è¿­¿¡ ´ëÇؼ­[7]     3cushion
10/04 4580
3084   Ãʺ¸ Áú¹®ÀÔ´Ï´Ù.(¹®ÀÚ¿­ ¹è¿­¿¡ ´ëÇؼ­...)[1]     kgh9090
10/05 3917
3083     [re] Ãʺ¸ Áú¹®ÀÔ´Ï´Ù.(¹®ÀÚ¿­ ¹è¿­¿¡ ´ëÇؼ­...)[3]     hkpco
10/05 3775
3082   Áú¹®ÀÔ´Ï´Ù.[1]     blue_star
10/05 4030
3081     [re] Ãʺ¸ Áú¹®ÀÔ´Ï´Ù.(¹®ÀÚ¿­ ¹è¿­¿¡ ´ëÇؼ­...)     kgh9090
10/05 4191
3080   ¸®´ª½º»ó DES¾Ë°í¸®Áò(C·Î ±¸¼º)..¾î¶»°Ô ÄÄÆÄÀÏ ÇÏ´ÂÁö...     msgon
10/06 4160
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10/06 5772
3078   Áú¹®ÀÌ¿©[5]     blue_star
10/08 4335
3077   [Áú¹®] gcc 2.96ÀÌ ±ò·ÁÀִ°÷¿¡¼­ 2.91¹öÀüÀ¸·Î ÄÄÆÄÀÏÇÒ·Á¸é...     vana94
10/10 3584
3076   ÇÁ·Î±×·¥ ¿ë¾î Áú¹®..     wnreh2ehd
10/11 4166
3075     [re] ÇÁ·Î±×·¥ ¿ë¾î Áú¹®..[5]     hkpco
10/11 4075
3074   ºñÁÖ¾ó C++ 6.0 ´Ù¿î¹ÞÀ»¼öÀÖ³ª¿µ?[1]     blue_star
10/11 8152
3073     [re] [Áú¹®] gcc 2.96ÀÌ ±ò·ÁÀִ°÷¿¡¼­ 2.91¹öÀüÀ¸·Î ÄÄÆÄÀÏÇÒ·Á¸é...     indra
10/11 4146
3072     [re] ºñÁÖ¾ó C++ 6.0 ´Ù¿î¹ÞÀ»¼öÀÖ³ª¿µ?     ¼ÒÀ¯
10/12 10337
3071   º£ÀÌÁ÷Àº ¾î´À ºÐ¾ß¿¡¼­ »ç¿ëÇØ¿ä?     jgminam
10/13 4092
3070   lseek¿¡ °üÇÑ Áú¹®ÀÔ´Ï´Ù~     bsshq7
10/13 4390
3069     [re] lseek¿¡ °üÇÑ Áú¹®ÀÔ´Ï´Ù~     indra
10/13 6145
3068       ¾Ñ Á¤¸» °¨»çÇÕ´Ï´Ù~     bsshq7
10/13 3620
3067   ÀÌ°Ç Áö±Ý Á¦°¡ ¸· ¿À´Ã ¹è¿î switch ¹®À» ÀÌ¿ëÇÑ °è»ê ÇÁ·Î±×·¥Àε¥ ½ÇÇàÀÌ Àß ¾È´ë´Â±º¿ä Á¶±Ý¸¸ µµ¿ÍÁÖ¼¼¿ä[1]     JoyanG
10/14 3989
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