Fawkescoin - A Cryptocurrency Without Public-Key Cryptography

The Blockchain Technology: Some Theory and Applications

Since its 2008 appearance as a cornerstone of the cryptocurrency bitcoin, the blockchain technology gained widespread attention as a modality to securily validate and store information without a trusted third party. Indeed trust is replaced by cryptographic security, epitomised by hash functions, a unique fingerprint of any information file. The paper is a quick overview of the main concepts an...

Cryptographic schemes, key exchange, public key

General cryptographic schemes are presented where keys can be one-time or ephemeral. Processes for key exchange are derived. Public key cryptographic schemes based on the new systems are established. Authentication and signature schemes are easy to implement. The schemes may be integrated with error-correcting coding schemes so that encryption/coding and decryption/decoding may be done simultan...

Pattern Language for Cryptographic Key Management

Many services in a distributed public network like the Internet require secure communications. Security in communications consists of confidentiality, integrity, authenticity, and non-repudiability. These aims can be achieved with cryptography. Key management plays a fundamental role in secure communications, as it is the basis of all cryptographic functions. This paper describes a pattern lang...

Generation of Cryptographic Keys from Personal Biometrics: An Illustration Based on Fingerprints

Provably Secure Cryptographic Constructions

Modern cryptography has virtually no provably secure constructions. Starting from the first Diffie–Hellman key agreement protocol (Diffie & Hellman, 1976) and the first public key cryptosystemRSA (Rivest et al., 1978), not a single public key cryptographic protocol has been proven secure. Note, however, that there exist secure secret key protocols, e.g., the one-time pad scheme (Shannon, 1949; ...