24361
While many popular schemes described in standards and in the literature have been shown to be vulnerable to padding oracle attacks , a solution which adds a one-bit and then extends the last block with zero-bits , standardized as " padding method 2 " in ISO / IEC 9797 - 1 , has been proven secure against these attacks .
 organization: ISO; organization: IEC
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: ISO, IEC 
Answer:
 organization: ISO; organization: IEC