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des_crypt
Langue: ja
Version: 2007-05-18 (openSuse - 09/10/07)
Section: 3 (Bibliothèques de fonctions)
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des_crypt, ecb_crypt, cbc_crypt, des_setparity, DES_FAILED - ¹â®¤Ê DES °Å¹æ²½½ñ¼°
#include <rpc/des_crypt.h> int ecb_crypt(char *key, char *data, unsigned datalen, unsigned mode); int cbc_crypt(char *key, char *data, unsigned datalen, unsigned mode, char *ivec); void des_setparity(char *key); int DES_FAILED(int status);
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ecb_crypt() ¤È cbc_crypt() ¤Ï NBS DES (Data Encryption Standard, ¥Ç¡¼¥¿°Å¹æ²½µ¬³Ê) ¤ò¼ÂÁõ¤·¤Æ¤¤¤ë¡£ ¤³¤ì¤é¤Î¥ë¡¼¥Á¥ó¤Ï crypt(3) ¤è¤ê¤â¹â®¤Ç¤è¤ê°ìÈÌŪ¤ÊÌÜŪ¤Ë»ÈÍѤǤ¤ë¡£ ÍøÍѲÄǽ¤Ç¤¢¤ì¤Ð¡¢¤³¤ì¤é¤Î¥ë¡¼¥Á¥ó¤Ï DES ¥Ï¡¼¥É¥¦¥§¥¢¤ò»ÈÍѤ¹¤ë¤³¤È¤â¤Ç¤¤ë¡£ ecb_crypt() ¤Ï ECB (Electronic Code Book) ¥â¡¼¥É¤Ç°Å¹æ²½¤¹¤ë¡£ ¤³¤Î¥â¡¼¥É¤Ç¤Ï (¸Ä¡¹¤Î) ¥Ç¡¼¥¿¤Î¥Ö¥í¥Ã¥¯¤òÆÈΩ¤·¤Æ°Å¹æ²½¤¹¤ë cbc_crypt() ¤Ï CBC (Cipher Block Chaining) ¥â¡¼¥É¤Ç°Å¹æ²½¤¹¤ë¡£ ¤³¤Î¥â¡¼¥É¤Ç¤ÏϢ³¤¹¤ë¥Ö¥í¥Ã¥¯¤ò¸ß¤¤¤ËÏ¢º¿¤µ¤»¤Æ°Å¹æ²½¤¹¤ë¡£ CBC ¤Ï¥Ö¥í¥Ã¥¯¤ÎÁÞÆþ¡¦ºï½ü¡¦ÃÖ¤´¹¤¨¤«¤éÊݸ¤ë¡£ ¤Þ¤¿Ê¿Ê¸¤Îµ¬Â§À¤¬°Å¹æÊ¸¤Ë¸½¤ì¤Ê¤¤¡£¤³¤ì¤é¤Î¥ë¡¼¥Á¥ó¤Î»ÈÍÑË¡¤ò¼¨¤¹¡£ Âè 1 °ú¤¿ô key ¤Ï¥Ñ¥ê¥Æ¥£ÉÕ¤¤Î 8 ¥Ð¥¤¥È¤Î°Å¹æ²½¸°¤Ç¤¢¤ë¡£ ¸°¤Î¥Ñ¥ê¥Æ¥£¤òÀßÄꤹ¤ë¤Ë¤Ï des_setparity() ¤ò»È¤¦¤³¤È¡£ DES ¤Î¾ì¹ç¡¢¸°¤Î¥Ñ¥ê¥Æ¥£¤Ï³Æ¥Ð¥¤¥È¤ÎºÇ²¼°Ì¥Ó¥Ã¥È¤Ç¤¢¤ë¡£ Âè 2 °ú¤¿ô data ¤Ï°Å¹æ²½¤Þ¤¿¤ÏÉü¹æ²½¤µ¤ì¤ë¥Ç¡¼¥¿¤ò´Þ¤à¡£ Âè 3 °ú¤¿ô datalen ¤Ï data ¤Î¥Ð¥¤¥ÈŤǤ¢¤ê¡¢8 ¤ÎÇÜ¿ô¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ Âè 4 °ú¤¿ô mode ¤Ï¤¤¤¯¤Ä¤«¤ÎÃͤò OR ¤¹¤ë¤³¤È¤ÇºîÀ®¤¹¤ë¡£ °Å¹æ²½¤ÎÊý¸þ (ÌõÃð: °Å¹æ²½¤Ê¤Î¤«Éü¹æ²½¤Ê¤Î¤«) ¤ò»ØÄꤹ¤ë¤¿¤á¡¢ DES_ENCRYPT ¤Þ¤¿¤Ï DES_DECRYPT ¤ò 'or' ¤¹¤ë¡£ °Å¹æ²½¤ò¥½¥Õ¥È¥¦¥§¥¢¤Ç¹Ô¤¦¤«¥Ï¡¼¥É¥¦¥§¥¢¤Ç¹Ô¤¦¤«¤ò»ØÄꤹ¤ë¤¿¤á¡¢ DES_HW ¤Þ¤¿¤Ï DES_SW ¤ò 'or' ¤¹¤ë¡£ DES_HW ¤¬»ØÄꤵ¤ì¤Æ¤¤¤Æ¡¢¤«¤Ä¥Ï¡¼¥É¥¦¥§¥¢¤¬¤Ê¤¤¾ì¹ç¡¢ °Å¹æ²½¤Ï¥½¥Õ¥È¥¦¥§¥¢¤Ç¼Â¹Ô¤µ¤ì¤Æ¡¢¥ë¡¼¥Á¥ó¤Ï DESERR_NOHWDEVICE ¤òÊÖ¤¹¡£ cbc_crypt() ¤Ë¤ª¤¤¤Æ¡¢°ú¤¿ô ivec ¤Ï¥Ç¡¼¥¿¥Ö¥í¥Ã¥¯¤òÏ¢º¿¤µ¤»¤ëºÝ¤Î 8 ¥Ð¥¤¥È¤Î½é´ü²½¥Ù¥¯¥È¥ë¤Ç¤¢¤ë¡£ ¤³¤Î°ú¤¿ô¤Ï¥ë¡¼¥Á¥ó¤«¤éÌá¤ë¤È¤¤Ë¼¡¤Î½é´ü²½¥Ù¥¯¥È¥ë¤Ë¹¹¿·¤µ¤ì¤ë¡£
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- DESERR_NONE
- ¥¨¥é¡¼¤Ê¤·¡£
- DESERR_NOHWDEVICE
- °Å¹æ²½¤ÏÀ®¸ù¤·¤¿¤¬¡¢Í׵ᤵ¤ì¤¿¥Ï¡¼¥É¥¦¥§¥¢¤ÎÂå¤ï¤ê¤Ë¥½¥Õ¥È¥¦¥§¥¢¤Ç¼Â¹Ô¤µ¤ì¤¿¡£
- DESERR_HWERROR
- ¥Ï¡¼¥É¥¦¥§¥¢¤Þ¤¿¤Ï¥É¥é¥¤¥Ð¤Ç¥¨¥é¡¼¤¬È¯À¸¤·¤¿¡£
- DESERR_BADPARAM
- ¥ë¡¼¥Á¥ó¤Ø¤Î°ú¤¿ô¤¬ÉÔÀµ¤Ç¤¢¤ë¡£
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des(1), crypt(3), xcrypt(3)Contenus ©2006-2023 Benjamin Poulain
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