Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese...

8

Transcript of Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese...

Page 1: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 2: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 3: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 4: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 5: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 6: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 7: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American
Page 8: Home : Department of Defence, Australian Government, Jobs ... · eccentrics, were breaking Japanese military, naval and diplomatic codes and ciphers long before the equivalent American

CS526Topic 3: Ciphers and Cipher Security 1 Information Security CS 526 Topic 3 Ciphers and Cipher Security: Stream Ciphers, Block Ciphers, Perfect Secrecy,

CS526Topic 3: Ciphers and Cipher Security 1 Information Security CS 526 Topic 3 Ciphers and Cipher Security: Stream Ciphers, Block Ciphers, Perfect Secrecy,

Stream ciphers

Stream ciphers

Length-Doubling Ciphers and Tweakable Ciphers

Length-Doubling Ciphers and Tweakable Ciphers

ASYMMETRIC CIPHERS

ASYMMETRIC CIPHERS

Brief Overview of Cryptography. 2 Outline cryptographic primitives – symmetric key ciphers block ciphers stream ciphers – asymmetric key ciphers – cryptographic.

Brief Overview of Cryptography. 2 Outline cryptographic primitives – symmetric key ciphers block ciphers stream ciphers – asymmetric key ciphers – cryptographic.

Autokey Ciphers

Autokey Ciphers

Block Ciphers

Block Ciphers

Secret Key: stream ciphers & block ciphers

Secret Key: stream ciphers & block ciphers

390 Codes, Ciphers, and Cryptography Polygraphic Substitution Ciphers – Hill’s System.

390 Codes, Ciphers, and Cryptography Polygraphic Substitution Ciphers – Hill’s System.

Eccentrics in Medicine€¦ · ECCENTRICS IN MEDICINE. H. S. 1 CARTER, ^O)., D.P.&. Eccentricity is frequently a mark of strong personality and is as often a characteristic of those

Eccentrics in Medicine€¦ · ECCENTRICS IN MEDICINE. H. S. 1 CARTER, ^O)., D.P.&. Eccentricity is frequently a mark of strong personality and is as often a characteristic of those

Hill Ciphers

Hill Ciphers

Building Stream Ciphers from Block Ciphers and their Security

Building Stream Ciphers from Block Ciphers and their Security

Block Ciphers and Stream Cipherscs236506/04/slides/crypto-slides...Block Ciphers Block ciphers are substitution ciphers in which the plaintext and the cipher-text blocks are binary

Block Ciphers and Stream Cipherscs236506/04/slides/crypto-slides...Block Ciphers Block ciphers are substitution ciphers in which the plaintext and the cipher-text blocks are binary

SYMMETRIC CIPHERS

SYMMETRIC CIPHERS

Block Ciphers and Stream Ciphers - University of Haifaorrd/IntroToCrypto/Lecture3-BlockCiphers.pdf · Block Ciphers and Stream Ciphers In practical ciphers the plaintext M is divided

Block Ciphers and Stream Ciphers - University of Haifaorrd/IntroToCrypto/Lecture3-BlockCiphers.pdf · Block Ciphers and Stream Ciphers In practical ciphers the plaintext M is divided

Monograms & ciphers

Monograms & ciphers

Classical Cryptosystems Shift Ciphers (Caesar) y= x+k (mod 26) Affine Ciphers y=ax+b (mod 26) Vigenere Ciphers codes=(02,14,03,04,18) Substitution Ciphers.

Classical Cryptosystems Shift Ciphers (Caesar) y= x+k (mod 26) Affine Ciphers y=ax+b (mod 26) Vigenere Ciphers codes=(02,14,03,04,18) Substitution Ciphers.

Caesar Ciphers

Caesar Ciphers

Diplomatic Tailored Tours & Diplomatic Administrative Services

Diplomatic Tailored Tours & Diplomatic Administrative Services

Week 3 - Friday. What did we talk about last time? Modular arithmetic Shift ciphers Transposition ciphers Substitution ciphers Vigenère ciphers.

Week 3 - Friday. What did we talk about last time? Modular arithmetic Shift ciphers Transposition ciphers Substitution ciphers Vigenère ciphers.