Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

java Óë c# 3des ¼Ó½âÃÜ

 
java Óë c# 3des ¼Ó½âÃÜ 
Ö÷Òª²îÒìÈçÏ£º
1¡¢ ¶ÔÓÚ´ý¼ÓÃܽâÃܵÄÊý¾Ý£¬¸÷×ÔµÄÌî³äģʽ²»Ò»Ñù
C#µÄģʽÓУºANSIX923¡¢ISO10126¡¢None¡¢PKCS7¡¢Zero£¬¶øJavaÓУºNoPadding¡¢PKCS5Padding¡¢SSL3Padding
2¡¢ ¸÷×ÔĬÈϵÄ3DESʵÏÖ£¬Ä£Ê½ºÍÌî³ä·½Ê½²»Ò»Ñù
C#µÄĬÈÏģʽΪCBC,ĬÈÏÌî³ä·½Ê½ÎªPKCS7; javaµÄĬÈÏģʽΪECB£¬Ä¬ÈÏÌî³ä·½Ê½ÎªPKCS5Padding
3¡¢ ¸÷×ÔµÄkeyµÄsize²»Ò»Ñù
C#ÖÐkeyµÄsizeΪ16ºÍ24¾ù¿É£»javaÖÐÒªÇókeyµÄsize±ØÐëΪ24£»¶ÔÓÚCBCģʽϵÄÏòÁ¿ivµÄsizeÁ½Õß¾ùÒªÇó±ØÐëΪ8
·­¿´ÁË3DESµÄÔ­Àí£º
DESÖ÷Òª²ÉÓÃÌæ»»ºÍÒÆÎ»µÄ·½·¨,ÓÃ56λÃÜÔ¿¶Ô64λ¶þ½øÖÆÊý¾Ý¿é½øÐмÓÃÜ,ÿ´Î¼ÓÃܿɶÔ64λµÄÊäÈëÊý¾Ý½øÐÐ16ÂÖ±àÂë,
¾­Ò»ÏµÁÐÌæ»»ºÍÒÆÎ»ºó,ÊäÈëµÄ64λת»»³É°²È«²»Í¬µÄ64µÄÊä³öÊý¾Ý

3DES:ÊÇÔÚDESµÄ»ù´¡ÉϲÉÓÃÈýÖØDES,¼´ÓÃÁ½¸ö56λµÄÃÜÔ¿K1,K2,·¢ËÍ·½ÓÃK1¼ÓÃÜ,K2½âÃÜ,ÔÙʹÓÃK1¼ÓÃÜ.½ÓÊÕ·½Ê¹ÓÃK1½âÃÜ,K2¼ÓÃÜ,ÔÙʹÓÃK1½âÃÜ,
ÆäЧ¹ûÏ൱ÓÚÃÜÔ¿³¤¶È¼Ó±¶.
ÓÚÊdz¢ÊÔÔÚjavaÖУ¬¶Ôkey½øÐв¹Î»£¬¼´ÓÃǰ8¸ö×Ö½Ú×÷Ϊbyte[24] ÖеÄbyte[16]~byte[23];·¢ÏÖÓëc#ÖмÓÃܵĽá¹ûÏàͬ£¡ÓÚÊǴ󵨼ÙÉèC#ÖпÉÄÜÊǼì²ékeyµÄsizeΪ16µÄʱºò
×Ô¶¯½«Ç°8¸ö×Ö½Ú×÷Ϊk3½øÐÐÁ˲¹Î»£¬¶øjavaûÓÐʵÏÖÕâÒ»µã£¨ÒòΪjavaµÄ3DESËã·¨ÖÐÇ¿ÖÆÒªÇókeyµÄsize±ØÐëΪ24£©¡£ÕâÑùµÄÇé¿öÏ£¬¿ÉÄܾÍÊÇ·¢ËÍ·½ÓÃk1¼ÓÃÜ¡¢k2½âÃÜ¡¢k3ÔÙ¼ÓÃÜ£»½ÓÊÜ·½k3½âÃÜ¡¢k2¼ÓÃÜ¡¢ÔÙk1½âÃÜÀ´ÊµÏÖ¡£
×îÖÕ¾­¹ý±àÂëÑéÖ¤£¬È·ÈÏkey´óСΪ24ʱ£¬javaºÍc#µÄ¼ÓÃܽâÃܽá¹ûÏàÒ»Ö¡£
JavaÖÐʵÏÖʱ£¬Ö»Òª×¢Òâ¶Ô´óС²»×ã24µÄkey½øÐв¹Î»£¬ºÍ²ÉÓÃCBCģʽ£¬Ìî³äģʽΪPKCS5Padding¼´¿É¡£
public class CDES {
public static byte[] encrypt(String sKey, byte[] bIV, byte[] bPlainText, int nOffset, int nSize)
throws Exception {
byte[] bKey = buildKey(sKey);
byte[] bInput = buildInput(nSize, bPlainText, nOffset);
byte[] bResult = encrypt(bIV, bKey, bInput);
return bResult;
}
public static byte[] decrypt(String sKey, byte[] bIV, byte[] bCipherText)
throws Exception {
byte[] bKey = buildKey(sKey);
SecretKey securekey = buildSecretKey(bKey);
IvParameterSpec iv = new IvParameterSpec(bIV);
Ciph


Ïà¹ØÎĵµ£º

ÏîÄ¿ÖÐÄã²»µÃ²»ÖªµÄ11¸öJavaµÚÈý·½Àà¿â

ÏîÄ¿ÖÐÄã²»µÃ²»ÖªµÄ11¸öJavaµÚÈý·½Àà¿â
ÔðÈα༭£ºñûÀï×÷ÕߣºJavaeye   2009-11-02   À´Ô´£ºIT168ÍøÕ¾
Îı¾Tag£º ITÒµ½ç Java Java¿ª·¢¹¤¾ß
¡¡¡¡¡¾IT168 ÆÀÂÛ¡¿JavaµÚÈý·½library ecosystemÊÇÒ»¸öºÜ¹ãÀ«µÄ·¶³ë¡£²»¾ÃǰÓÐÈË׫ÎÄ£ºÃ¿¸öÏîÄ¿ÖУ¬Äã±ØÐëÖªµÀµÄ11¸öJavaµÚÈý·½Àà¿â¡£
¡¡¡¡µ¥Ôª²âÊÔ
¡¡¡¡ ......

C# ²Ù×÷ACCESSÊý¾Ý¿â

Ô­ÎÄ£ºhttp://www.cnblogs.com/whitetiger/archive/2007/03/27/689620.html
 ÔÚBETA2ÖУ¬¡£NETÌṩÁËÒÔϵÄNAMESPACE£º
System.Data Namespace
System.Data.OleDb £¨ºÍBETA1ÖÐÒѾ­²»Í¬ÁË£¬ËùÒÔÈç¹ûÄÃBETA1ÖеijÌÐòµ½BETA2ÖÐÀ´ÔËÐп϶¨²»¿ÉÒԵģ©
Èç¹ûÏë½²Çå³þÕâЩ¶«Î÷£¬ÎÒ²»ÈÏΪÊÇÎÒ¿ÉÒÔ×÷µ½µÄ£¬ËùÒÔÎÒÏëͨ¹ýһЩ¾ ......

¸øJAVAµÄÐÂÊÖ

ºÜ¶àÈËÕâÑùÎÊ£¬JAVAÔõôѧѽ£¿Ó¦¸Ã¿´Ê²Ã´Êéѽ£¿
ÀÏʵ˵¸öÈËÀ´Ëµ£¬Êé¿´µÃ²»¶à£¬¿ªÊ¼µÄʱºò¾Í¿´Á˱¾ sam's teach yourself Java2 in 24 hours.
ËùÒÔÎÊÆðÕâЩÎÊÌâ£¬Õæ²»ºÃ˵,ÿ¸öÈ˶¼²»Ò»Ñù.
×ܵÄÀ´Ëµ,ÎÒ¾õµÃÊǶàÁ·Ï°ÊǺÜÖØÒªµÄ,
²»Òª¿´Ì«¶àÊéÒ»±¾¾Í¿ÉÒÔÁË,µ«Á·Ï°Ò»¶¨Òª¶à×ö,
ѧϰÊÇÒ»¸öÄ£·ÂµÄ¹ý³Ì,
Ä£·ÂµÄ¹ý³ÌÖл¹Òª²» ......

Java¶ÁÈ¡´óÎļþ

Óöµ½¹ýÕâÑùÒ»¸öÇé¿ö£¬ÐèÒªÓÃjava¶Áȡһ¸ö200MµÄÎı¾¸ñʽÎļþ£¬¶øÇÒ»¹ÐèÒª¶ÔÎļþµÄÄÚÈÝ×ö½âÎö£¬½øÐзִʡ£Èç¹ûÓÃJVMµÄĬ
ÈÏÉèÖã¬ÀûÓÃScannerÀàÖ»ÄܶÁ³ö4M´óСÄÚÈÝ£¬ÓÚÊÇÎÒ¾ÍÔÚÍøÉÏËÑË÷£¬µ«ÊÇÍøÉÏûÓÐÕÒµ½Ò»ÆªÎÄÕÂÊÇÎÒËùÐèÒªµÄÄÚÈÝ¡£ÓÚÊÇÎÒÖ»ºÃ·­thinking
in
java£¬·¢ÏÖÁËÒ»¸öjavaµÄnioÀïÓиöMappedByteBufferÀ࣬ËûµÄ×÷Ó ......

JAVA NIO ÖÐÎÄ1

 
If the requested address is not a valid virtual memory address (it doesn't belong to any of
the memory segments of the executing process), the page cannot be validated, and
a segmentation fault is generated. This vectors control to another part of the kernel and
usually results in the pro ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ