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BigForest 2010-11-22 14:48 鍙戣〃璇勮
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SHA-1-綆浠?/title><link>http://www.tkk7.com/BigForest/archive/2010/11/22/338684.html</link><dc:creator>BigForest</dc:creator><author>BigForest</author><pubDate>Mon, 22 Nov 2010 06:30:00 GMT</pubDate><guid>http://www.tkk7.com/BigForest/archive/2010/11/22/338684.html</guid><wfw:comment>http://www.tkk7.com/BigForest/comments/338684.html</wfw:comment><comments>http://www.tkk7.com/BigForest/archive/2010/11/22/338684.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/BigForest/comments/commentRss/338684.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/BigForest/services/trackbacks/338684.html</trackback:ping><description><![CDATA[棣栧厛浠嬬粛涓婼HA1錛岃佺編鐨勪笢瑗垮綋鐒跺緱鐪嬪師鏂囦簡錛岃屼笖鍘熸枃綆鍗曟槗鎳傘?br /> 1: FIPS 180-1 Secure Hash Standard:<a target="_blank">http://www.itl.nist.gov/fipspubs/fip180-1.htm</a><br /> <br /> 2: Secure Hash Standard: <a target="_blank">http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf</a><br /> <br /> 鐪嬭繃鍘熸枃錛屽SHA1灝變細鏈変釜澶ц嚧浜嗚В浜嗭紝榪欓噷鍐嶈創鍑轟釜涓枃緲昏瘧鍚с?br /> <br /> <br /> 1 SHA1綆楁硶綆浠?br /> 瀹夊叏鍝堝笇綆楁硶錛圫ecure Hash Algorithm錛変富瑕侀傜敤浜庢暟瀛?br /> 絳懼悕鏍囧噯錛圖igital Signature Standard DSS錛夐噷闈㈠畾涔夌殑<br /> 鏁板瓧絳懼悕綆楁硶錛圖igital Signature Algorithm DSA錛夈傚<br /> 浜庨暱搴﹀皬浜?^64浣嶇殑娑堟伅錛孲HA1浼氫駭鐢熶竴涓?60浣嶇殑娑堟伅鎽?br /> 瑕併傚綋鎺ユ敹鍒版秷鎭殑鏃跺欙紝榪欎釜娑堟伅鎽樿鍙互鐢ㄦ潵楠岃瘉鏁版嵁<br /> 鐨勫畬鏁存с傚湪浼犺緭鐨勮繃紼嬩腑錛屾暟鎹緢鍙兘浼氬彂鐢熷彉鍖栵紝閭d箞榪欐椂鍊欏氨浼氫駭鐢熶笉鍚岀殑娑堟伅鎽樿銆?br /> SHA1鏈夊涓嬬壒鎬э細涓嶅彲浠ヤ粠娑堟伅鎽樿涓鍘熶俊鎭紱涓や釜涓嶅悓鐨勬秷鎭笉浼氫駭鐢熷悓鏍風殑娑堟伅鎽樿銆?br /> 2 鏈鍜屾蹇?br /> 2.1浣?Bit)錛屽瓧鑺傦紙Byte錛夊拰瀛楋紙Word錛?br /> SHA1濮嬬粓鎶婃秷鎭綋鎴愪竴涓綅錛坆it錛夊瓧絎︿覆鏉ュ鐞嗐傛湰鏂囦腑錛屼竴涓?#8220;瀛?#8221;錛圵ord錛夋槸32浣嶏紝鑰屼竴涓?#8220;瀛?br /> 鑺?#8221;錛圔yte錛夋槸8浣嶃傛瘮濡傦紝瀛楃涓?#8220;abc”鍙互琚漿鎹㈡垚涓涓綅瀛楃涓詫細01100001 01100010 01100011銆傚畠<br /> 涔熷彲浠ヨ琛ㄧず鎴?6榪涘埗瀛楃涓? 0x616263.<br /> 2.2 榪愮畻絎﹀拰絎﹀彿<br /> 涓嬮潰鐨勯昏緫榪愮畻絎﹂兘琚繍鐢ㄤ簬“瀛?#8221;錛圵ord錛?br /> X^Y = X錛?Y閫昏緫涓?br /> X \/ Y = X錛?Y閫昏緫鎴?br /> X XOR Y= X錛?Y閫昏緫寮傛垨<br /> ~X = X閫昏緫鍙栧弽<br /> X+Y瀹氫箟濡備笅錛?br /> 瀛?X 鍜?Y 浠h〃涓や釜鏁存暟 x 鍜寉, 鍏朵腑 0 <= x < 2^32 涓?0 <= y < 2^32. 浠ゆ暣鏁皕 = (x + y) mod 2^32.<br /> 榪欐椂鍊?0 <= z < 2^32. 灝唞杞崲鎴愬瓧Z, 閭d箞灝辨槸 Z = X + Y.<br /> 寰幆宸︾Щ浣嶆搷浣滅Sn(X)銆俋鏄竴涓瓧錛宯鏄竴涓暣鏁幫紝0<=n<=32銆係n(X) = (X<<n)OR(X>>32-n)<br /> X<<n瀹氫箟濡備笅錛氭姏寮冩渶宸﹁竟鐨刵浣嶆暟瀛楋紝灝嗗悇涓綅渚濇鍚戝乏縐誨姩n浣嶏紝鐒跺悗鐢?濉ˉ鍙寵竟鐨刵浣嶏紙鏈鍚庣粨鏋滆繕鏄?br /> 32浣嶏級銆俋>>n鏄姏寮冨彸杈圭殑n浣嶏紝灝嗗悇涓綅渚濇鍚戝彸縐誨姩n浣嶏紝鐒跺悗鍦ㄥ乏杈圭殑n浣嶅~0銆傚洜姝ゅ彲浠ュ彨Sn(X)浣嶅驚鐜?br /> 縐諱綅榪愮畻<br /> 3 SHA1綆楁硶鎻忚堪<br /> 鍦⊿HA1綆楁硶涓紝鎴戜滑蹇呴』鎶婂師濮嬫秷鎭紙瀛楃涓詫紝鏂囦歡絳夛級杞崲鎴愪綅瀛楃涓層係HA1綆楁硶鍙帴鍙椾綅浣滀負杈撳叆銆傚亣<br /> 璁炬垜浠瀛楃涓?#8220;abc”浜х敓娑堟伅鎽樿銆傞鍏堬紝鎴戜滑灝嗗畠杞崲鎴愪綅瀛楃涓插涓嬶細<br /> 01100001 01100010 01100011<br /> 鈥曗曗曗曗曗曗曗曗曗曗曗曗?br /> ‘a’=97 ‘b’=98 ‘c’=99<br /> 榪欎釜浣嶅瓧絎︿覆鐨勯暱搴︿負24銆備笅闈㈡垜浠渶瑕?涓楠ゆ潵璁$畻MD5銆?br /> 3.1 琛ヤ綅<br /> 娑堟伅蹇呴』榪涜琛ヤ綅錛屼互浣垮叾闀垮害鍦ㄥ512鍙栨ā浠ュ悗鐨勪綑鏁版槸448銆備篃灝辨槸璇達紝錛堣ˉ浣嶅悗鐨勬秷鎭暱搴︼級%512 =<br /> 448銆傚嵆浣塊暱搴﹀凡緇忔弧瓚沖512鍙栨ā鍚庝綑鏁版槸448錛岃ˉ浣嶄篃蹇呴』瑕佽繘琛屻?br /> 琛ヤ綅鏄繖鏍瘋繘琛岀殑錛氬厛琛ヤ竴涓?錛岀劧鍚庡啀琛?錛岀洿鍒伴暱搴︽弧瓚沖512鍙栨ā鍚庝綑鏁版槸448銆傛昏岃█涔嬶紝琛ヤ綅鏄嚦灝?br /> 琛ヤ竴浣嶏紝鏈澶氳ˉ512浣嶃傝繕鏄互鍓嶉潰鐨?#8220;abc”涓轟緥鏄劇ず琛ヤ綅鐨勮繃紼嬨?br /> 鍘熷淇℃伅錛?01100001 01100010 01100011<br /> 琛ヤ綅絎竴姝ワ細01100001 01100010 01100011 1<br /> 棣栧厛琛ヤ竴涓?#8220;1”<br /> 琛ヤ綅絎簩姝ワ細01100001 01100010 01100011 10…..0<br /> 鐒跺悗琛?23涓?#8220;0”<br /> 鎴戜滑鍙互鎶婃渶鍚庤ˉ浣嶅畬鎴愬悗鐨勬暟鎹敤16榪涘埗鍐欐垚涓嬮潰鐨勬牱瀛?br /> 61626380 00000000 00000000 00000000<br /> 00000000 00000000 00000000 00000000<br /> 00000000 00000000 00000000 00000000<br /> 00000000 00000000<br /> 鐜板湪錛屾暟鎹殑闀垮害鏄?48浜嗭紝鎴戜滑鍙互榪涜涓嬩竴姝ユ搷浣溿?br /> 3.2 琛ラ暱搴?br /> 鎵璋撶殑琛ラ暱搴︽槸灝嗗師濮嬫暟鎹殑闀垮害琛ュ埌宸茬粡榪涜浜嗚ˉ浣嶆搷浣滅殑娑堟伅鍚庨潰銆傞氬父鐢ㄤ竴涓?4浣嶇殑鏁版嵁鏉ヨ〃紺哄師濮?br /> 娑堟伅鐨勯暱搴︺傚鏋滄秷鎭暱搴︿笉澶т簬2^64錛岄偅涔堢涓涓瓧灝辨槸0銆傚湪榪涜浜嗚ˉ闀垮害鐨勬搷浣滀互鍚庯紝鏁翠釜娑堟伅灝卞彉鎴?br /> 涓嬮潰榪欐牱浜嗭紙16榪涘埗鏍煎紡錛?br /> 61626380 00000000 00000000 00000000<br /> 00000000 00000000 00000000 00000000<br /> 00000000 00000000 00000000 00000000<br /> 00000000 00000000 00000000 00000018<br /> 濡傛灉鍘熷鐨勬秷鎭暱搴﹁秴榪囦簡512錛屾垜浠渶瑕佸皢瀹冭ˉ鎴?12鐨勫嶆暟銆傜劧鍚庢垜浠妸鏁翠釜娑堟伅鍒嗘垚涓涓竴涓?12浣嶇殑鏁?br /> 鎹潡錛屽垎鍒鐞嗘瘡涓涓暟鎹潡錛屼粠鑰屽緱鍒版秷鎭憳瑕併?br /> 3.3 浣跨敤鐨勫父閲?br /> 涓緋誨垪鐨勫父閲忓瓧K(0), K(1), ... , K(79)錛屽鏋滀互16榪涘埗緇欏嚭銆傚畠浠涓嬶細<br /> Kt = 0x5A827999 (0 <= t <= 19)<br /> Kt = 0x6ED9EBA1 (20 <= t <= 39)<br /> Kt = 0x8F1BBCDC (40 <= t <= 59)<br /> Kt = 0xCA62C1D6 (60 <= t <= 79).<br /> 3.4 闇瑕佷嬌鐢ㄧ殑鍑芥暟<br /> 鍦⊿HA1涓垜浠渶瑕佷竴緋誨垪鐨勫嚱鏁般傛瘡涓嚱鏁癴t (0 <= t <= 79)閮芥搷浣?2浣嶅瓧B錛孋錛孌騫朵笖浜х敓32浣嶅瓧浣滀負杈?br /> 鍑恒俧t(B,C,D)鍙互濡備笅瀹氫箟<br /> ft(B,C,D) = (B AND C) or ((NOT B) AND D) ( 0 <= t <= 19)<br /> ft(B,C,D) = B XOR C XOR D (20 <= t <= 39)<br /> ft(B,C,D) = (B AND C) or (B AND D) or (C AND D) (40 <= t <= 59)<br /> ft(B,C,D) = B XOR C XOR D (60 <= t <= 79).<br /> 3.5 璁$畻娑堟伅鎽樿<br /> 蹇呴』浣跨敤榪涜浜嗚ˉ浣嶅拰琛ラ暱搴﹀悗鐨勬秷鎭潵璁$畻娑堟伅鎽樿銆傝綆楅渶瑕佷袱涓紦鍐插尯錛屾瘡涓兘鐢?涓?2浣嶇殑瀛楃粍鎴愶紝<br /> 榪橀渶瑕佷竴涓?0涓?2浣嶅瓧鐨勭紦鍐插尯銆傜涓涓?涓瓧鐨勭紦鍐插尯琚爣璇嗕負A錛孊錛孋錛孌錛孍銆傜涓涓?涓瓧鐨勭紦鍐插尯琚爣<br /> 璇嗕負H0, H1, H2, H3, H4<br /> 銆?0涓瓧鐨勭紦鍐插尯琚爣璇嗕負W0, W1,..., W79<br /> 鍙﹀榪橀渶瑕佷竴涓竴涓瓧鐨凾EMP緙撳啿鍖恒?br /> 涓轟簡浜х敓娑堟伅鎽樿錛屽湪絎?閮ㄥ垎涓畾涔夌殑16涓瓧鐨勬暟鎹潡M1, M2,..., Mn<br /> 浼氫緷嬈¤繘琛屽鐞嗭紝澶勭悊姣忎釜鏁版嵁鍧桵i 鍖呭惈80涓楠ゃ?br /> 鍦ㄥ鐞嗘瘡涓暟鎹潡涔嬪墠錛岀紦鍐插尯 琚垵濮嬪寲涓轟笅闈㈢殑鍊鹼紙16榪涘埗錛?br /> H0 = 0x67452301<br /> H1 = 0xEFCDAB89<br /> H2 = 0x98BADCFE<br /> H3 = 0x10325476<br /> H4 = 0xC3D2E1F0.<br /> 鐜板湪寮濮嬪鐞哅1, M2, ... , Mn銆備負浜嗗鐞?Mi,闇瑕佽繘琛屼笅闈㈢殑姝ラ<br /> (1). 灝?Mi 鍒嗘垚 16 涓瓧 W0, W1, ... , W15, W0 鏄渶宸﹁竟鐨勫瓧<br /> (2). 瀵逛簬 t = 16 鍒?79 浠?Wt = S1(Wt-3 XOR Wt-8 XOR Wt- 14 XOR Wt-16).<br /> (3). 浠?A = H0, B = H1, C = H2, D = H3, E = H4.<br /> (4) 瀵逛簬 t = 0 鍒?79錛屾墽琛屼笅闈㈢殑寰幆<br /> TEMP = S5(A) + ft(B,C,D) + E + Wt + Kt;<br /> E = D; D = C; C = S30(B); B = A; A = TEMP;<br /> (5). 浠?H0 = H0 + A, H1 = H1 + B, H2 = H2 + C, H3 = H3 + D, H4 = H4 + E.<br /> 鍦ㄥ鐞嗗畬鎵鏈夌殑 Mn, 鍚庯紝娑堟伅鎽樿鏄竴涓?60浣嶇殑瀛楃涓詫紝浠ヤ笅闈㈢殑欏哄簭鏍囪瘑<br /> H0 H1 H2 H3 H4.<br /> 瀵逛簬SHA256,SHA384,SHA512銆備綘涔熷彲浠ョ敤鐩鎬技鐨勫姙娉曟潵璁$畻娑堟伅鎽樿銆傚娑堟伅榪涜琛ヤ綅鐨勭畻娉曞畬鍏ㄦ槸涓鏍?br /> 鐨勩?br /> <img src ="http://www.tkk7.com/BigForest/aggbug/338684.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/BigForest/" target="_blank">BigForest</a> 2010-11-22 14:30 <a href="http://www.tkk7.com/BigForest/archive/2010/11/22/338684.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss> <footer> <div class="friendship-link"> 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