缃戠粶瀹夊叏鐨勫睘鎬?/p>
(5
涓?/p>
)
:
鏈哄瘑鎬?/p>
.
銆佸畬鏁存�с�佸彲鐢ㄦ�с�佸彲鎺ф�с�佷笉鍙姷璧栨�?/p>
缃戠粶瀹夊叏鏈嶅姟
:
閴村埆銆佽闂帶鍒躲�佹暟鎹繚瀵嗘�с�佹暟鎹畬鏁存�с�佷笉鍙惁璁?/p>
缃戠粶瀹夊叏鏈哄埗
锛氬姞瀵嗘満鍒躲�佹暟瀛楃鍚嶆満鍒躲�佽闂帶鍒舵満鍒躲�佹暟鎹畬鏁存�ф満鍒躲�侀壌鍒氦鎹㈡満
鍒躲�侀�氫俊涓氬姟濉厖鏈哄埗銆佽矾鐢辨帶鍒舵満鍒?/p>
鍙俊璁＄畻鏈虹郴缁熻瘎浼版爣鍑?/p>
锛?/p>
A B C D
锛?/p>
锛氬父瑙?/p>
c1
c2
b1
D
绾?/p>
淇濇姢鏈�灏?/p>
----
娌℃湁瀹夊叏淇濇姢
C
绾?/p>
C1
锛堣嚜涓诲畨鍏ㄤ繚鎶?/p>
---
鑷富瀛樺偍鎺у埗
c2
锛堝彈鎺у瓨鍌ㄤ繚鎶わ級
----
鍗曠嫭鐨勫彲鏌ユ�э紝瀹夊叏鏍?/p>
璇?/p>
B
绾?/p>
B1
锛堟爣璁板畨鍏ㄤ繚鎶?/p>
---
寮哄埗澶哄彇鎺у埗锛屽畨鍏ㄦ爣璇嗭級
B2
锛堢粨鏋勫寲淇濇姢
---
闈㈠悜瀹夊叏鐨勪綋绯?/p>
缁撴瀯锛岃緝濂界殑鎶楁笚閫忚兘鍔涳級
B3
锛堝畨鍏ㄥ煙锛?/p>
A
绾?/p>
楠岃瘉璁捐
瀵嗙爜浣撳埗鐨勫垎绫伙細
鏂瑰紡涓�锛?/p>
锛?/p>
瀵嗛挜鐗圭偣
锛夊绉板瘑鐮佷綋鍒跺拰闈炲绉板瘑鐮佷綋鍒?/p>
瀵圭О瀵嗙爜浣撳埗琚О涓哄崟閽ヤ綋鍒舵垨绉侀挜瀵嗙爜浣撳埗鎴栦紶缁熷瘑鐮佷綋鍒?/p>
闈炲绉板瘑鐮佷綋鍒惰绉颁负鍙岄挜浣撳埗鎴栧叕閽ュ瘑鐮佷綋鍒?/p>
鏂瑰紡浜岋細
锛?/p>
鍔犲瘑鏂瑰紡涓嶅悓
锛夋祦瀵嗙爜鍜屽垎缁勫瘑鐮?/p>
娴佸瘑鐮佹槸灏嗘槑鏂囨秷鎭寜瀛楃閫愪綅鍔犲瘑锛屽垎缁勫瘑鐮佹槸灏嗘槑鏂囨秷鎭厛鍒嗙粍锛屽啀閫愪釜鍔犲瘑
绉侀挜瀵嗙爜浣撳埗锛?/p>
DES
绠楁硶
----
鍒嗙粍闀垮害
64bit
锛屽瘑閽ラ暱搴?/p>
64bit
锛岃凯浠ｅ湀鏁?/p>
16
鍦堬紝鏈夋晥浣嶆暟
6bit
瀵圭О瀵嗙爜浣撳埗涓庡叕閽ュ瘑鐮佷綋鍒跺尯鍒?/p>
锛?/p>
搴忓彿
瀵圭О瀵嗙爜
鍏挜瀵嗙爜
瀵嗛挜鏁伴噺
鍔犲瘑鍜岃В瀵嗕娇鐢ㄧ浉鍚岀殑瀵嗛挜
鍔犲瘑鍜岃В瀵嗕娇鐢ㄤ笉鍚屽瘑閽?/p>
瀵嗛挜绉嶇被
瀵嗛挜蹇呴』淇濆瘑瀛樻斁
绉侀挜淇濆瘑瀛樻斁锛屽叕閽ュ叕寮�瀛樻斁
瀵嗛挜绠＄悊
閫氫俊鍓嶏紝鏀跺彂鍙屾柟蹇呴』瀹炵幇瀵嗛挜鍏变韩
閫氫俊鍓嶏紝鏀跺彂鍙屾柟鏃犻渶瀹炵幇瀵嗛挜鍏?/p>
浜?/p>
閫熷害
闈炲父蹇?/p>
鎱?/p>
鐢ㄩ�?/p>
鐢ㄦ潵鍋氬ぇ閲忚祫鏂欑殑鍔犲瘑
鐢ㄦ潵鍔犲瘑灏忔枃浠舵垨瀵逛俊鎭瀛楃瓑涓?/p>
澶繚瀵嗙殑搴旂敤锛堟暟瀛楃鍚嶃�佸瘑閽ヤ氦鎹級
鍏挜瀵嗙爜浣撳埗涓ょ鍩烘湰妯″瀷
锛氬姞瀵嗘ā鍨嬨�佽璇佹ā鍨?/p>
鏉傚噾鍑芥暟锛?/p>
鏄璇佸拰鏁板瓧绛惧悕鐨勫熀鏈粍鎴愰儴鍒嗭紝鎸夌収鏄惁鏈夊瘑閽ユ帶鍒跺垝鍒嗕负锛氭湁
->
瀵嗙爜鏉?/p>
鍑戝嚱鏁?/p>
鏃?/p>
->
涓�鑸潅鍑戝嚱鏁帮紱鏉傚噾鍑芥暟鏄皢浠绘剰闀跨殑鏁板瓧涓?/p>
M
鏄犲皠鎴愪负涓�涓緝鐭殑瀹氶暱杈?/p>
鍑烘暟瀛椾覆
h
鐨勫嚱鏁帮紝閫氬父鐢?/p>
H
锛?/p>
M
锛夎鏄撲簬璁＄畻锛岀О
h=H(M)
涓?/p>
M
鐨勬潅鍑戝�硷紝涔熺О涓烘潅鍑?/p>
鐮佸拰鏁板瓧鎸囩汗銆?/p>
PGP
锛?/p>
鐩墠琚箍娉涢噰鐢ㄧ殑涓�绉嶄负鐢靛瓙閭欢鍜屾枃浠跺瓨鍌ㄥ簲鐢ㄦ彁渚涗繚瀵嗗拰璁よ瘉鏈嶅姟鐨勯偖浠跺畨鍏?/p>
淇濆瘑绯荤粺銆?/p>
锛堝熀浜庡叕閽ュ瘑鐮佷綋璐級
PKI
鐨勭粍鎴?/p>
锛?/p>
1)
PKI
绛栫暐銆佽蒋纭欢绯荤粺
2)
璁よ瘉涓績锛?/p>
CA
)
銆佹敞鍐屾満鏋勶紙
RA
锛?/p>
銆佽瘉涔︾鍙戠郴缁?/p>
3)PKI
搴?/p>
鐢?/p>
淇′换妯″瀷寤虹珛鐨勭洰鐨勶細
纭繚涓�涓璇佹満鏋勭鍙戠殑璇佷功鑳藉琚彟涓�涓璇佹満鏋勭殑鐢ㄦ埛鎵�淇′换銆?/p>
PKI
涓湁鍥涚甯哥敤鐨勪俊浠绘ā鍨嬶細
1
锛変弗鏍煎眰娆＄粨鏋勬ā鍨?/p>
(Strict Hierarchy of Certification Authorities Model)
銆?/p>
2
锛夊垎甯冨紡淇′换缁撴瀯妯″瀷
(Distributed Trust Architecture Model)
銆?/p>
3
锛?/p>
Web
妯″瀷
(Web Model)
锛?/p>
4
锛変互鐢ㄦ埛涓轰腑蹇冪殑淇′换妯″瀷
(User-Centric Trust Model)
銆?/p>