AES Crypt command to decrypt a file, Aescrypt –d file_name, uses 26-character key mapping and converts plaintext input into fixed-length chunks of morse code used to derive ciphertext letters, Fractionated Morse Cipher, uses curly braces {….}, Set Theory, coding compresses data by looking for patterns within binary or metadata, Huffman, adaptive dictionary data compression technology (LZ-77 coding), Lempel-Viz Welsh (LZW):, Least significant byte stored in lowest memory address; Usually INTEL, Little Endian, : Biggest/most significant byte stored in lowest memory address; Usually IBM mainframes, Big Endian, complex data integrity check that also corrects errors; “scheme” because it encodes and decodes with its algorithm, Reed Solomon, no fractions; can be positive or negative, Integers, fraction, Rational numbers, both integers and rational numbers, Real numbers, integers that can only be divisible by itself or 1, Prime numbers, positive numbers, Natural numbers, Probability: events that make up the possible outcome of a coin toss, = mutually exclusive

D334 Chapter 1 Notes

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