ossp-pkg/mct/rsa.mct
Name: rsa
Title: RSA Public Key Algorithm
Author: ->Ralf S. Engelschall::mailto:rse@engelschall.com<-
Reply-To: rse@engelschall.com
Created: 11-May-2002
Modified: 11-May-2002
Serial: 1
Password: CheatMe!
?? What does **RSA** stand for?
!! presentation, ->slide 2::rsa/slide-002-n.html<-
-- Ronald's Security Algorithm
-- Ronald Shane Adleman
++ Rivest Shamir Adleman
-- Remainder Secret Algorithm
-- Remaining Security Advocation
-- Rivest Shamir Algorithm
?? RSA is a...
!! presentation, ->slide 2::rsa/slide-002-n.html<-, ->slide 4::rsa/slide-004-n.html<-
++ asymmetric cryptography algorithm
-- symmetric cryptography algorithm
-- elliptic curve cryptography algorithm
-- private key cryptography algorithm
?? The RSA algorithm provides...
!! presentation, ->slide 2::rsa/slide-002-n.html<-
++ Encryption
++ Digital Signatures
++ Secure Key Exchange
-- Steganography
-- Data Mining
-- Zero Knowledge
-- Message Digesting
-- Electronic Cash
?? RSA is one of the cryptrography algorithm underlying...
!! presentation, ->slide 3::rsa/slide-003-n.html<-
++ SSL/TLS
++ SSH
++ IPsec
++ DNSSEC
++ PGP
-- DNS
++ SMIME
-- MIME
-- HTTP
++ HTTPS
-- FTP
++ SFTP
-- IMAP
++ IMAPS
-- POP3
?? RSA is **mainly** based on mathematical foundations from...
!! presentation, ->slide 3::rsa/slide-003-n.html<-
-- function theory
-- coding theory
++ algebra
++ number theory
-- analysis
-- geometry
?? The major drawback in symmetric cryptography is that the...
!! presentation, ->slide 4::rsa/slide-004-n.html<-
++ key has to be securely interchanged before communication
-- key cannot be made as secure as needed
-- algorithms are not as secure as the asymmetric ones
-- algorithms can be implemented in hardware too easily
?? Ciphers provide...
!! presentation, ->slide 4::rsa/slide-004-n.html<-
++ privacy
-- integrity
-- authentication
-- invisibility
?? Message digests provide...
!! presentation, ->slide 5::rsa/slide-005-n.html<-
-- privacy
++ integrity
-- authentication
-- invisibility
?? Certificates provide...
!! presentation, ->slide 6::rsa/slide-006-n.html<-
-- privacy
-- integrity
++ authentication
-- invisibility
?? Which of the following are **symmetric** cryptography algorithms?
!! presentation, ->slide 4::rsa/slide-004-n.html<-
++ DES
++ AES
++ Blowfish
++ RC4
++ IDEA
-- DH
-- ElGammal
-- RSA
-- MD5
-- SHA1
-- RMD160
-- CRC
?? Which of the following are **asymmetric** cryptography algorithms?
!! presentation, ->slide 4::rsa/slide-004-n.html<-
-- DES
-- AES
-- Blowfish
-- RC4
-- IDEA
++ DH
++ ElGammal
++ RSA
-- MD5
-- SHA1
-- RMD160
-- CRC
?? Which of the following are **cryptographically-strong** message digest algorithms?
!! presentation, ->slide 5::rsa/slide-005-n.html<-
-- DES
-- AES
-- Blowfish
-- RC4
-- IDEA
-- DH
-- ElGammal
-- RSA
++ MD5
++ SHA1
++ RMD160
-- CRC
?? Message digests generate for long variable-length messages...
!! presentation, ->slide 5::rsa/slide-005-n.html<-
-- long fixed-length representations
-- long variable-length representations
++ short fixed-length representations
-- short variable-length representations
?? Message digests for two different messages...
!! presentation, ->slide 5::rsa/slide-005-n.html<-
-- are equal
-- should be equal
-- are different
++ should be different
?? Digital certificates associate...
!! presentation, ->slide 6::rsa/slide-006-n.html<-
++ a public key with an identity
-- a private key with an identity
-- a public key with a private key
?? "x mod n = y" (x, y, n, k: all integers greater than 0), is equivalent with
!! presentation, ->slide 8::rsa/slide-008-n.html<-
++ x = k*n + y
-- x = k/n + x
-- n = x/y
-- n = x*y
?? Primes are numbers which...
!! presentation, ->slide 8::rsa/slide-008-n.html<-
-- if multiplied with theirself result in 1
++ are without remainder only divisible by theirself and 1
++ have 1 as the greatest common divisor with all lower numbers
-- can be divided by theirself with a remainder of 1
?? The primary mathematical foundation for the possibility that \
the encryption of RSA can be decrypted is the theorem of...
!! presentation, ->slide 9::rsa/slide-009-n.html<-
-- Gauß
++ Euler/Fermat
-- Cauchy
-- Riemann
-- Rivest
-- Shamir
-- Adleman
-- Rivest/Shamir/Adleman
?? Encrypting message M with RSA public key {e,n} (n modulus) into cipher text \
C basically means calculating
!! presentation, ->slide 10::rsa/slide-010-n.html<-
++ C = M^e mod n
-- M = C^e mod n
-- C = M^n mod e
-- M = C^n mod e
-- e = M*C^2
-- C = M mod n^e
?? Decrypting cipher text C with RSA private key {d,n} (n modulus) into message \
M basically means calculating
!! presentation, ->slide 10::rsa/slide-010-n.html<-
-- C = M^d mod n
++ M = C^d mod n
-- C = M^n mod e
-- M = C^n mod e
-- d = M*C^2
-- M = C mod n^d
?? In RSA the two involved keys are named the...
!! presentation, ->slide 11::rsa/slide-011-n.html<-
++ public key
++ private key
-- secret key
-- unsecure key
-- secure key
-- protected key
?? The RSA private key is...
!! presentation, ->slide 11::rsa/slide-011-n.html<-
++ technically fully interchangeable with the public key
++ private by definition only, not by mathematical constraints
-- private by mathematical constraints, not by definition
?? **Very large** random prime numbers are efficiently determined by...
!! vocal explanations while presentation
-- deterministic calculation
++ repeated guessing and testing
-- looking up in a table
?? For applying RSA to encrypt arbitrary texts, one has to...
!! presentation, ->slide 13::rsa/slide-013-n.html<-
++ treat character blocks as a large integer numbers
-- encrypt every single text character individually
?? The security of RSA lies in the fact that...
!! presentation, ->slide 13::rsa/slide-013-n.html<-
++ no efficient algorithm is known for factorization of numbers
-- no efficient algorithm is known for calculating discrete logarithm
-- the remaining algorithm details are kept secret by RSA, Inc.
-- the algorithm is proofed to be unbreakable
-- the algorithm is definetely secure by design
?? RSA, compared to the speed of DES/AES, is...
!! presentation, ->slide 13::rsa/slide-013-n.html<-
-- dramatically faster
-- slightly faster
-- approximately equal
-- slightly slower
++ dramatically slower
-- not comparable
?? When implementing RSA, the **main** problems are that you need...
!! presentation, ->slide 13::rsa/slide-013-n.html<-
++ arbitrary precision arithmetic
++ good pseudo-random number generator
++ efficient primaly test
-- fast hardware
-- secure memory
-- assembly language
?? There patent on RSA...
!! presentation, ->slide 2::rsa/slide-002-n.html<-
-- expired in 1978
++ started in 1978
++ expired in 2000
-- started in 2000
-- expires in 2038
-- starts in 2038
== The analysis of your answers indicates that
-- 000-009 you have still not understood RSA at all. Sorry.
-- 010-029 you have understood only a few points about RSA. Hmmm..
-- 030-049 you have understood a fair amount about RSA. Go ahead.
-- 050-079 you have understood a lot about RSA, but failed a few points. Ok.
-- 080-089 you have understood mostly all about RSA. Great!
-- 090-100 you have fully understood RSA. Congratulations! Wohooo!
== We have to conclude that you are
-- 000-009 sleeping while presentations are held. **:-(**
-- 010-029 still not familiar enough with cryptography. **:-|**
-- 030-049 a cryptography newbie with at least increasing potential. **:-)**
-- 050-079 a cryptography fan with an already large potential. **:-)**
-- 080-089 a cryptography enthusiast. Just a few steps missing to a guru. **;-)**
-- 090-100 a cryptography guru already shaking hands with Ron, Adi and Len. **;-)**
