The information age has seen the development of electronic pathways that carry vast amounts of valuable commercial, scientific, and educational information between financial institutions, companies, individuals, and government organisations. Unfortunately the unprecedented levels of access provided by systems like the Internet also expose this data to breaches of confidentiality, disruption of service, and outright theft. The cryptlib security...

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Bài viết trình bày phương pháp kết hợp giữa mã hoá Affine và One-Time Pad (OTP) nhằm nâng cao tính bảo mật cho văn bản tiếng Việt có dấu. Do đặc thù bảng chữ cái tiếng Việt bao gồm các ký tự đặc biệt, việc áp dụng các kỹ thuật mã hóa truyền thống cần được điều chỉnh để tương thích.

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Nghiên cứu cho thấy rằng DES đã được sử dụng rộng rãi trong các ứng dụng bảo mật, tuy nhiên khả năng bị tấn công bởi các kỹ thuật tấn công hiện đại đã khiến cho thuật toán này trở nên lỗi thời và không còn đảm bảo tính bảo mật cao trong các ứng dụng hiện đại. Để cải thiện tính bảo mật của DES, các thuật toán mã hóa khác như Triple...

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Lecture Cryptography: Introduction to Cryptography Courses is designed for students beginning their journey into the field of cryptology. The lecture provides an overview of the course structure, syllabus, and resources available for study and practice. It also explains expectations for assessments and how students can engage in hands-on projects and labs. Please refer to the lecture for more details!

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Lecture Cryptography: Cryptology Overviews introduces the fundamental concepts of cryptography and its applications. The lecture explores core terminologies, classical cipher systems, and the evolution of algorithms in cryptographic science. It sets the stage for understanding the practical use of cryptography in securing information. Please refer to the lecture for more details!

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Lecture Cryptography: Modern Symmetric Ciphers (Part 1) focuses on classical symmetric cipher algorithms and introduces modern techniques. The lecture explores block ciphers, stream ciphers, and provides an in-depth analysis of the Data Encryption Standard (DES). This serves as a foundation for understanding advanced symmetric encryption. Please refer to the lecture for more details!

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Lecture Cryptography: Modern Symmetric Ciphers (Part 2) delves into the Advanced Encryption Standard (AES) and modes of operation. The lecture explains how AES improves upon previous methods and introduces multiple techniques for secure encryption processing. It also examines how data can be handled in different cipher modes. Please refer to the lecture for more details!

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Lecture Cryptography: Modern Asymmetric Ciphers (Part 1) transitions to asymmetric cryptography, offering a review of stream ciphers, DES, and AES. The lecture sets the groundwork for more complex public-key cryptography systems. It also touches on potential enhancements like dynamic AES. Please refer to the lecture for more details!

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Lecture Cryptography: Modern Asymmetric Ciphers (Part 2) introduces core public-key algorithms such as the ElGamal cipher and Diffie-Hellman key exchange. These methods are critical for secure communication in decentralized environments. The lecture emphasizes their mathematical foundations and security properties. Please refer to the lecture for more details!

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Lecture Cryptography: Asymmetric Ciphers (Part 3) extends into advanced asymmetric systems, including logarithm-based encryption and elliptic curve cryptography. It also introduces quantum-resistant algorithms, emphasizing future-oriented cryptographic security. This lecture highlights ongoing innovations in public-key systems. Please refer to the lecture for more details!

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Lecture Cryptography: Authentication (Part 1) introduces digital signature concepts and signature schemes including ElGamal and Schnorr methods. It explores motivations for authentication and standard practices in digital identity verification. This lecture emphasizes the role of trust and integrity in communication. Please refer to the lecture for more details!

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Lecture Cryptography: Authentication (Part 2) continues with hash functions and message authentication codes. The lecture highlights how cryptographic hashes play a role in verifying data integrity and origin. It also presents practical tools used to ensure authenticity in digital communications. Please refer to the lecture for more details!

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