사용
J. Message B : Message For B Client의 구분을 위해서 사용
K. Certificate : 인증서
L. ID : 사용자의 계정 이름, 구분이 없는 형태
M. A’S ID : Client A의 ID
N. B’S ID : Client B의 ID
O. PW : 사용자의 계정 암호
P. E : Encryption 암호화 과정 표현
Q. D : Decryption 복호화 과정 표현
R. Pub : Public key
S. Priv : Private key
public-key cryptographic algorithms are designed to resist chosen-plaintext attacks. And their security is based both on the difficulty of finding the secret key from the public key and the difficulty of determining the plaintext from the cryptogram. At present, the most common public-key cryptosystem is the RSA algorithm. The RSA cryptosystem is related to the difficulty of factoring large numbe
5.3.2.1.1 International public goods
보편적인 지리학적 적용범위를 가진 순수공공재를 International public goods라고 한다. International public goods 는 국제 안보(international security), 지식, 환경 그리고 경제안정(economic stability)를 포함한다. 지식은 전 세계에 퍼져있기 때문에 비경쟁적인 재화이다.
지식은 사람들이
Failed states in a World of Terror
The Clash of Civilizations?
The Clash of Ignorance
Security dilemma and ethnic conflict
Discussion questions
Having failed at some of the basic conditions and responsibilities of a sovereign government
Loss of physical control of its territory
Erosion of legitimate authority to make collective decisions
Inability to provide reasonable public
security operation requires the commitment and cooperation of central and local government agencies, airport authorities, airlines, other airport tenants, police and security staff, and the public itself. We will discuss how security procedures affect airport operation and describes in general terms airport security requirements. For obvious reasons, descriptions of detailed procedural arrangemen
security system's strengths and weaknesses be evaluated. Alterations in major policy direction are by a continuous situation assessment of the changing security climate. Factors that can radically alter the security threat in a particular country or at a particular airport are political agitation or unrest and widespread publicity of other security incidents. Figure 1.2 indicates the conceptual s
public pension programs. For example the US social security system the typical worker who reached the system normal retirement age of 65 was expected to live another 12 years. And today the time is getting longer. But the workers in the developed countries are retiring earlier thereby compounding the impact of rising longevity on pension costs.
2) Effect on Public Budgets
Population aging tra
United StatesInternational wars
Example: reliance upon contractors such as Blackwater, U.S.A., for “security support” in Iraq
•Domestic security
Example: the changing Federal Protective Service and its role in Louisiana after Hurricane Katrina
•Regulation
Example: drafting of environmental regulations for the U.S. Environmental Protection Agency (EPA) by private law firms
strikes
Social Security Act (1935)
An attempt to limit what were
seen as dangers in the modern
American life (old age, poverty,
unemployment, and the burdens
of widows and fatherless children)
“This (JRB37) was a thinly veiled attempt to change the decisions of the Court by adding new members who were supporters of the New Deal and threatened the integrity of the Court.”