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<TD bgColor=#6595d6 height=25><IMG height=11
src="MD5英文介紹_files/newwin.gif" width=14 align=absBottom><STRONG
style="COLOR: white"> 主題：MD5英文介紹</STRONG></TD></TR>
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<TD width=64>作 者</TD>
<TD width=233>fineman</TD>
<TD width=63>閱讀次數(shù)</TD>
<TD width=85>452</TD>
<TD width=63>回復(fù)次數(shù)</TD>
<TD width=85>2</TD></TR>
<TR align=middle bgColor=#ffffff>
<TD width=64>所屬欄目</TD>
<TD width=233>基礎(chǔ)應(yīng)用與新手入門>> IT英語</TD>
<TD width=63>發(fā)表日期</TD>
<TD width=85>2006-4-10</TD>
<TD width=63>回復(fù)日期</TD>
<TD
width=85>2006-8-22</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
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target=_blank>fineman</A><BR><IMG alt=等級(jí)2
src="MD5英文介紹_files/top-2.gif"><BR>
<DIV class=userInfoBox>積分：4243<BR>第二級(jí)</DIV>
<DIV class=userInfoBox>注冊(cè)時(shí)間<BR>2005-11-7</DIV></DIV></TD>
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<DIV class=TitleInfoBox align=right>發(fā)表時(shí)間：2006-4-10 17:53:52 樓主</DIV>
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<DIV id=cont_right style="WIDTH: 495px">The MD5 Algorithm takes as input a
message of arbitrary length and produces as output a 128-bit "fingerprint"
or "message digest" of the input. It is conjectured that it is
computationally infeasible to produce two messages having the same message
digest, or to produce any message having a given pre-specified target
message digest. MD5 is aimed at 32-bit machines and intended for digital
signature applications, where a large file must be "compressed" in a
secure manner before being encrypted with a private key under a Public-Key
Cryptography system such as RSA.<BR><BR></DIV></TD></TR>
<TR bgColor=#ffffff>
<TD class=hai vAlign=top align=middle width=83 height=70>
<DIV align=center><A class=chinablue title=給他/她留言
href="http://po.csai.cn/write_shortmess.asp?func=0&username=fuwenqi"
target=_blank>fuwenqi</A><BR><IMG alt=等級(jí)3
src="MD5英文介紹_files/top-3.gif"><BR>
<DIV class=userInfoBox>積分：9956<BR>第三級(jí)</DIV>
<DIV class=userInfoBox>注冊(cè)時(shí)間<BR>2006-8-17</DIV></DIV></TD>
<TD class=bbsmain style="WORD-BREAK: break-all; WHITE-SPACE: normal"
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<DIV class=TitleInfoBox align=right>發(fā)表時(shí)間：2006-8-22 10:06:41 第1樓</DIV>
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<DIV id=cont_right style="WIDTH: 495px">MD5 運(yùn)算法則采取輸入任意長(zhǎng)度的消息和輸出128比特的"指印"
或"消息摘要"
輸入的產(chǎn)品。<BR><BR>它被推測(cè)為在計(jì)算上使二則消息有同樣的消息摘要或者是任一則消息有一個(gè)指定的目標(biāo)消息摘要是不可能實(shí)行的。<BR><BR>MD5瞄準(zhǔn)的是32
位機(jī)器和打算供數(shù)字簽名應(yīng)用使用,一個(gè)大文件必須是根據(jù)一個(gè)公眾鑰匙密碼學(xué)系統(tǒng)譬如RSA以一個(gè)私用密鑰在被加密之前以安全方式"壓縮的"
。</DIV></TD></TR>
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<TD class=hai vAlign=top align=middle width=83 height=70>
<DIV align=center><A class=chinablue title=給他/她留言
href="http://po.csai.cn/write_shortmess.asp?func=0&username=飄渺少年狂"
target=_blank>飄渺少年狂</A><BR><IMG alt=等級(jí)3 src="MD5英文介紹_files/top-3.gif"><BR>
<DIV class=userInfoBox>積分：7396<BR>第三級(jí)</DIV>
<DIV class=userInfoBox>注冊(cè)時(shí)間<BR>2006-8-17</DIV></DIV></TD>
<TD class=bbsmain style="WORD-BREAK: break-all; WHITE-SPACE: normal"
vAlign=top align=left height=70>
<DIV class=TitleInfoBox align=right>發(fā)表時(shí)間：2006-8-22 10:53:33 第2樓</DIV>
<HR style="MARGIN-TOP: -5px; COLOR: #cccccc" align=center width="100%"
noShade SIZE=1>
<DIV id=cont_right style="WIDTH: 495px">更正：MD5
運(yùn)算法則采取輸入任意長(zhǎng)度的消息，提出輸出128比特的"指印" 或"消息摘要"的輸入。<BR><BR>感覺上第一句應(yīng)該這樣吧。</DIV></TD></TR>
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