Course

COM-401: Cryptography and security

Lectures in this course (57)

Secure Communications: Biometric Passport Case Study

Explores the shift to secure communications through the biometric passport case study, covering RFID, identity examples, MRTD, EAC, and cryptographic protocols.

Mobile Telephony Security

Explores 2G mobile telephony security, covering authentication, encryption, privacy concerns, and vulnerabilities in encryption algorithms.

Diffie-Hellman Cryptography: Key Exchange and Fields

Explores Diffie-Hellman key exchange, group orders, Z_p field, and cryptographic challenges.

Symmetric Encryption Schemes

Explores symmetric encryption schemes, including block and stream ciphers, their vulnerabilities, and the importance of key lengths.

Secure Communications: TLS and Security Protocols

Explores TLS, security protocols, synchronization, fair termination, and secure communication applications.

Mobile Telephony Security

Explores the security challenges and improvements in mobile telephony, covering encryption algorithms, protocols, and integrity/authentication issues.

Bruteforce Inversion Algorithms

Covers bruteforce inversion algorithms and their importance in various applications.

Trust Establishment: Cryptography and Security

Explores trust establishment in cryptography and security, covering secure channels, PKI vulnerabilities, and diverse cryptographic models.

Diffie-Hellman Key Exchange

Explores the Diffie-Hellman key exchange protocol, covering computational challenges, subgroup issues, and key wrapping in RFC 2631.

Public-Key Cryptography: Post-Quantum and Access Control

Explores public-key cryptography, post-quantum systems, and access control mechanisms in depth.

Diffie-Hellman Cryptography: Key Exchange and Attacks

Explores Diffie-Hellman key exchange, DDH problem, active attacks, and cryptographic protocol challenges.

Elliptic Curve Cryptography in Practice

Explores the practical applications of elliptic curve cryptography in various real-world scenarios and cryptographic operations.

Trust Establishment: Bluetooth Security

Explores trust establishment in Bluetooth security, covering protocols, vulnerabilities, countermeasures, and security features.

Diffie-Hellman Key Exchange and ElGamal Cryptosystem

Explores Diffie-Hellman key exchange and ElGamal cryptosystem, discussing their security aspects and applications in RSA, emphasizing the Chinese Remainder Theorem's role in speeding up decryption and proving RSA correctness.

Access Control: Password-based Cryptography

Explores access control and password-based cryptography, including challenges, biometrics, and the biometric passport case study.

Symmetric Encryption: DES and AES

Explores DES and AES encryption, discussing weak keys, attacks, AES structure, IV importance, and various modes of operation for secure encryption.

Commitment Scheme and PRNG

Explores the commitment scheme, key derivation function, and pseudorandom generator in cryptographic protocols, emphasizing their role in ensuring data integrity and authentication.

Diffie-Hellman and ElGamal Cryptosystems

Explores Diffie-Hellman key exchange, ElGamal cryptosystem, and their security applications in cryptography.

Stream Ciphers: Buteforce Inversion Algorithms

Explores stream ciphers, buteforce inversion algorithms, key recovery games, and attacks in cryptography.

Cryptographic Hash Functions and Block Chains

Covers cryptographic hash functions, message authentication codes, and block chains, including bitcoins, proof-of-work, and MAC variants.