change image path in rbac and ucon

wyhitcs · Apr 14, 2016 · 62ce949 · 62ce949
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diff --git a/role_based_access_control.md b/role_based_access_control.md
@@ -88,7 +88,7 @@ RBAC is currently used in
 
 - Database management systems
 - Enterprise Application for Security Administration and User Management
-  
+
 Applicatons(using some form of RBAC)
 
 - Microsoft Active Directory
@@ -224,7 +224,7 @@ Static Separation of Duty constraint ssod(ps,n)
 #####Exercise 见54,55
 ![](RBAC2exercise.png)
 1. inconstraint r3 both p2 and p3
-2. 
+2. 
 ####Static Separation of Duty (SSoD)
 - SSoD used to place constrains on permissions assigned to users
 - In our example:见56

diff --git a/usage_control.md b/usage_control.md
@@ -324,7 +324,7 @@ Pay-per-use with a pre-paid credit
 * M amount of money 
 * credit : S → M 
 * value : O ×  R → M
-*  ATT(S) = {credit}
+* ATT(S) = {credit}
 * ATT(O) = {value}
 
 allowed(s,o,r)⇒credit(s)≥value(o,r)