What is CTF Challenges ?

Cryptography can be divided into classical and modern Cryptography. Classical Cryptography focus on confidential writing and transmission of information as well as the corresponding deciphering methods. Modern Cryptography is not only focusing on information confidentiality, but also involves information integrity verification, non-repudiation of information publication, and all information security issues generated by internal and external attacks in distributed computing. The differen[...]

Modern cryptography is one of the most important aspect of computer and communications security. It is based on mainly mathematics concepts like number theory, computational-complexity theory and probability. Unlike classical cryptography which manipulates traditional characters, modern cryptography operates on binary bit-string. It could also be proven, under given assumption, to be computationally secure. The primary goals that modern cryptography is trying to achieve are: Confi[...]