http://www.roboticfan.com/blog/user_2005/104/archives/2006/2006331212531.shtml
MD5
Message-Digest Algorithm 5
http://tech.163.com/06/0106/22/26QM1J230009159F.html
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鐩墠鐢靛瓙絳懼悕絳懼悕鐨勫疄鐜版柟寮忔湁錛?br />鍩轟簬PKI(Public Key Infrastructino)鐨勫叕閽ュ瘑鐮佹妧鏈殑鏁板瓧絳懼悕錛?br />浠ョ敓鐗╃壒寰佺粺璁″涓哄熀紜鐨勮瘑鍒爣璇嗭紱
鎵嬪嵃銆佸０闊沖嵃璁版垨瑙嗙綉鑶滄壂鎻忕殑璇嗗埆錛?br />涓涓鏀朵歡浜鴻兘璇嗗埆鍙戜歡浜鴻韓浠界殑瀵嗙爜浠ｅ彿銆佸瘑鐮佹垨涓漢璇嗗埆鐮丳IN錛?br />鍩轟簬閲忓瓙鍔涘鐨勮綆楁満...
鏁板瓧絳懼悕鐨勭洰鐨勫拰鍔熻兘:
璁よ瘉銆佹暟鎹繚瀵嗘с佹暟鎹畬鏁存у拰涓嶅彲鍚﹁鎬?
鏁板瓧絳懼悕鐨勫疄鐜版柟寮?
(涓)鍏挜鍔犲瘑綆楁硶濡備綍鍔犲瘑:
姣斿鎴戣鍙戦佷竴涓粷瀵嗙殑淇℃伅M緇欎綘,鎴戝綋鐒朵笉浼氱洿鎺ユ妸M鍐欏湪淇￠噷闈㈠瘎緇欎綘,鎴戜細鎻愬墠鍛婅瘔浣犺В瀵嗙殑鏂規硶,鐒跺悗浣跨敤綆楁硶P澶勭悊M寰楀埌P(M),鎴戝彂閫丳(M)緇欎綘.鍥犱負浣犵煡閬撹В瀵嗙殑鏂規硶P',浣犱嬌鐢≒'鏉ュ鐞哖(M)寰楀埌浜哅.鍙P鍜孭'涓嶈鍒漢鐭ラ亾,鎴戜滑鐨勯氳灝辨槸淇濆瘑鐨?
濡傛灉浠嶱'鑳藉寰楀埌P,閭ｄ綘灝辮兘鐭ラ亾P,鐒跺悗浼鎴戝彂閫佹秷鎭粰鍏朵粬浜?
浣嗘槸鎹鏈変竴涓叕閽ュ姞瀵嗙畻娉?鍔犲瘑鍜岃В瀵嗙殑綆楁硶鏄竴鏍風殑,鑰屼笖鏄叕寮鐨?鎴戝憡璇変綘鎴戠殑鍏挜k1,鎴戣嚜宸變繚瀵嗙殑鏄閽0,鎴戝彂閫佺粰浣犵殑淇℃伅鏄疢' = P(k0,M),浣犳敹鍒癕'鍚庡彲浠ラ氳繃榪愮畻P(k1,M')寰楀埌M,浣嗘槸閫氳繃k1鏄棤娉曡綆楀嚭k0鐨?閫氳繃K0涔熸棤娉曡綆楀嚭k1.(鎴戜篃涓嶇煡閬撴槸鍚︾湡鐨勮繖涔堢濂?鐜板湪緗戠粶涓婂埌澶勯兘鏄疪SA琚牬瑙ｄ箣綾葷殑,鐪嬪緱鑿滈笩鎴戝績鎯婅儐棰?淇哄垰瑕佸ソ濂藉涔犲憿,鍒漢鏃╁凡緇忔妸瀹冮瑕嗕簡).
榪欐牱浣犲彧鏈夎В瀵嗙殑浠?娌℃湁浼鎴戣韓浠界殑鍙兘.
鍚屾牱浣犱篃鍙互鐢╧1鏉ュ姞瀵嗗彂娑堟伅緇欐垜,鎴戠敤k0鍙互灝嗗畠瑙ｅ瘑.
浣嗘槸榪欑鍏挜鍔犲瘑綆楁硶鏄妸娑堟伅鏈韓褰撴垚涓涓ぇ鏁版潵榪涜騫傝繍綆?鎵浠ユ瘮濡傛垜鎯蟲妸1000涓瓧鑺傜殑瀛楃涓插綋鎴愪竴涓ぇ鏁版潵鍔犲瘑,搴旇鏄潪甯稿洶闅捐屼笖闈炲父鎱㈢殑.(鍋舵兂楂樻墜搴旇浼氱畻,浣嗛偅涓嶆槸淇哄叧蹇冪殑)
鎵浠ユ湁浜嗘暎鍒?
(浜?鍏充簬鏁ｅ垪:
鏈甯哥敤鐨勬暎鍒楁満鍒舵湁 SHA1,MD5,RIPEMD-160絳?SHA1鍗斥滃畨鍏ㄦ暎鍒楃畻娉曗濄係HA1 鍙互澶勭悊 2**64瀛楄妭浠ュ唴鐨勪換浣曟秷鎭紝騫剁敓鎴愪竴涓?20 瀛楄妭鐨勭粨鏋溿?br />鎸夌収鑿滈笩鎴戠湅鏉ヨ繖涓嶆槸"鏁ｅ垪",榪欐槸"鑱氬垪"鍟?鎶婁竴涓?^(64*8)鐨勬暟鏄犲皠鍒頒竴涓?(20*8)鐨勬暟,鍚屽織浠?榪欎笉鏄仛鍒楁槸浠涔?浣嗗叾瀹炴垜浠竴鑸敤鐨勫瓧絎︿覆,涓嶄細鎶?~2^(64*8)鐨勬暟鍏ㄧ敤鍏?鍙敤浜嗗叾涓竴灝忛儴鍒?鎵浠ヨ繖涓暎鍒椾技涔庢槸鐩稿瀹夊叏鐨?榪欑闂灝辯暀緇欓暱浜嗗嚑涓剳琚嬬殑浜烘潵瑙ｅ喅鍚?
鍏抽敭鏄暎鍒楃畻娉曟瘮鍏挜鍔犲瘑綆楁硶瑕佸揩寰堝.
榪欐牱,鎴戞壘鍒頒簡涓瀵瑰叕閽ュ拰縐侀挜(k0鍜宬1),鎴戝叕甯冧簡鎴戠殑鏁ｅ垪綆楁硶H,鍙戣〃浜嗕竴綃囬暱5涓囦釜瀛楀鑿滄棤姣旂殑璁烘枃,鍐呭涓篗,瀵筂榪涜鏁ｅ垪,寰堝揩寰楀埌H(M),鐒跺悗鐢ㄧ閽ュ姞瀵嗗緱鍒癝 = P(k0,H(M)),鎶奡闄勫湪M鍚庨潰騫跺彂琛?
浣犵湅鍒板悗涓轟簡璇佸疄榪欑瘒鍏剁儌鏃犳瘮鐨勬枃绔犳槸鎴戝啓鐨?鍙互鍒ゆ柇 P(k1,S) 鏄惁絳変簬H(M).濡傛灉鐩哥瓑,浣犲氨鍙互紜畾榪欏叾鐑傛棤姣旂殑鏂囩珷紜疄鏄垜鍐欑殑.
鎴栬呯‘瀹氶偅涓嫍灞佷笉閫氱殑瀹℃壒紜疄鏄煇澶т漢鎵瑰噯鐨?
(涓?闄や簡浣跨敤鍏挜鍔犲瘑綆楁硶鏉ュ疄鐜版暟瀛楃鍚?榪樺彲浠ョ敤HMAC鏉ュ疄鐜?
HMAC鍗蟲暎鍒楀悗鐨勬秷鎭獙璇佷唬鐮佲?Hashed Messsage Authentication Code)
寰蔣MSDN涓婅繖涔堣:
灝嗗叡浜瘑閽ユ販鍚堝湪鎽樿涓紝鍗沖垱寤?H(S+M)銆傛偍鏀跺埌娑堟伅鍚庯紝鍙互浣跨敤鑷繁鐨?S 鍓湰鏉ュ垱寤?H'(S+M)銆?br />鍦ㄤ嬌鐢?HMAC 鏃訛紝瀹屾暣鎬т繚鎶ょ殑鏈夋晥鎬у彇鍐充簬鏀誨嚮鑰呰綆楀嚭 S 鐨勮兘鍔涖傚洜姝わ紝S 搴旇涓嶅鏄撹鐚滃嚭錛屽茍搴旇緇忓父鏇存敼 S銆傜鍚堜互涓婅姹傜殑鏈濂芥柟娉曚箣涓鏄嬌鐢?Kerberos銆傚湪 Kerberos 涓紝涓ぎ鏈烘瀯灝嗗湪涓や釜瀹炰綋甯屾湜閫氫俊鏃跺垎閰嶅寘鍚復鏃朵細璇濆瘑閽ョ殑鈥滅エ鈥濄傛浼氳瘽瀵嗛挜灝嗙敤浣滃叡浜瘑閽ャ傚湪瑕佸皢絳懼悕鍙戦佺粰鎮ㄦ椂錛屾垜灝嗗緱鍒頒竴寮犵エ錛屼互鍜屼綘閫氫俊銆傛垜鎵撳紑紲ㄤ腑鐨勫睘浜庢垜鐨勯偅涓閮ㄥ垎鏉ヨ幏寰?S錛岀劧鍚庡皢娑堟伅銆佹秷鎭殑 HMAC 鍜岀エ涓偍鐨勯偅涓閮ㄥ垎鍙戦佺粰鎮ㄣ傛偍鎵撳紑紲紙浣跨敤鍘熸潵閫氳繃 Kerberos 娉ㄥ唽鐨勫瘑閽ワ級錛岃幏鍙?S 浠ュ強鏈夊叧鎴戣韓浠界殑淇℃伅銆傛偍鐜板湪鍙互鑾峰緱娑堟伅 M錛岀敓鎴愯嚜宸辯殑 H'(S+M)錛屽茍鏌ョ湅瀹冧滑鏄惁鍖歸厤銆傚鏋滃尮閰嶏紝琛ㄦ槑鎮ㄥ師灝佷笉鍔ㄥ湴鏀跺埌浜嗘垜鐨勬秷鎭紝騫朵笖 Kerberos 灝嗛氱煡鎮ㄦ垜鏄皝銆?/font>
Kerberos鏄彜甯岃厞紲炶瘽閲岀殑鍦板煙闂ㄥ彛鐨勪竴鏉′笁澶寸嫍.涔熸槸MIT楹葷渷鐞嗗伐澶у鍙戞槑鐨勪竴縐嶅崗璁?瑕佷嬌鐢ㄨ繖涓崗璁渶瑕侀厤緗竴涓垎鍙戞湇鍔″櫒,浼間箮姣旇緝楹葷儲...
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