cryptography fundamentals ammar hasayen. spartans military (greeks) kryptos gráphō hiddenwriting...

CryptographyFundamentalsAmmar Hasayen

Back in time

SPARTANS MILITARY (GREEKS)

kryptos gráphōhidden writingCryptography

Before and after

How things worked before

Face to Face

Corporate walls Badges Paper

work

TrustConfidentiality

Authenticity Delivery

How things working Now

Virtual Team

World is the limit Digital ID

Digital Collaboratio

n

WirelessAnywhere BYOD E-transactions

C.I.A

Confidentiality

Integrity

Authenticity

ConfidentialityEncryption

….

Encryption – via Key

Encryption

AlgorithmMessage

Key (K)

EncryptedMessage

SymmetricEncryption

Encryption – Current Standards

DES3DES AES

IntegrityHashing

….

Changing Content

Encryption

Algorithm

Message

Key (K)

EncryptedMessage

Hack

2 aspirin /day

20 aspirin /day

Integrity via HashHash

AlgorithmMessage Unique

Hash Value

Hash Algorithm

001001001

Hash Algorithm

111001110

We are allMoath

Wee are allMoath

Complete SolutionEncryption

Algorithm

MessageKey (K)

EncryptedMessage

HashAlgorithm

Unique Hash Value

Encryption

AlgorithmEncryptedMessage

Key (K)

Message

Unique Hash Value

Hash Algorithm

Unique Hash Value

Hash – Current StandardsMD5

SHA1SHA-2

Thank You

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