Cryptography_university_course

This is practice for Cryptography course in University

Table of contents

Task 1 - Base64 converter
Task 2 - XOR two hex buffers
Task 3 - Decode string with one-letter key
Task 4 - Finding and decoding real string in group of hex-strings
Task 5 - Realization XOR-encryption with duplicated key
Task 6 - Decoding texts with duplicated key