Decrypted secrets: methods and maxims of cryptology

Aims and methods of cryptography

Encryption steps: simple substitution

Encryption steps: polygraphic substitution and coding

Encryption steps: linear substitution

Encryption steps: transposition

Polyalphabetic encryption: families of alphabets

Polyalphabetic encryption: keys

Composition of classes of methods

Open encryption key systems

Encryption security

Exhausting combinatorial complexity

Anatomy of language: patterns

Polyalphabetic case: probable words

Anatomy of language: frequencies

Kappa and Chi

Periodicity examination

Alignment of accompanying alphabets

Compromises

Linear basis analysis

Anagramming.