Applied Cryptography

Applied Cryptography Robust Software Quantum Safety Machine Learning Applied to Security Analysis and Exploration of Vulnerabilities Computer Systems Forensic Analysis Reverse Engineering Identification, Authentication and Authorization Secure Execution Environments Direito da Organização e da Segurança

Applied Cryptography
Classical (Symmetric) Cryptography
Modern Symmetric Cryptography
Cipher Modes
Cryptographic Hashing
RSA & Related Subjects
Asymmetric Key Management
Digital Signatures

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N-bit OFB (Output Feedback)
N-bit CFB (Ciphertext Feedback)
N-bit CTR (Counter)
Stream vs. Block

Stream Cipher Modes

PreviousDeployment of (Symmetric) Block Ciphers NextSecurity Reinforcement

Last updated 1 year ago

N-bit OFB (Output Feedback)

Ci = Ti ⊕ Ek * (Si)

Ti = Ci ⊕ Ek * (Si)

Si = f(Si-1, Ek * (Si-1))

S0 = IV

N-bit CFB (Ciphertext Feedback)

Ci = Ti ⊕ Ek * (Si)

Ti = Ci ⊕ Ek * (Si)

Si = f(Si-1, Ci)

S0 = IV

N-bit CTR (Counter)

Ci = Ti ⊕ Ek * (Si)

Ti = Ci ⊕ Ek * (Si)

Si = S_(i-1) + 1

S0 = IV

Stream vs. Block