Package hcrypto.engines

Class Summary

AffineEngine	Implements an Affine cipher algorithm (a special case of a Substitution Cipher that encrypts and decrypts a character based on two Affine functions) for any of three alphabet ranges including az, AZ, az+AZ.
AffineKey	Represents a key for an Affine cipher.
CaesarEngine	Implements the Caesar cipher algorithm for any range of alphabets, including az, AZ, azAZ, azAZ09, printable, and ASCII.
CaesarKey	Represents a key for a Caesar (shift) cipher.
NullEngine	Represents a null cipher -- that is a cipher that makes no transformation to the plaintext string.
NullKey	Represents a null key--i.e., a key for a trivial cipher that makes no transformation to the plaintext.
PlayfairEngine	Implements the Playfair encryption algorithm.
PlayfairKey	Represents a key for a Playfair cipher.
PolySubstitutionEngine	Implements a PolySubstitution cipher algorithm (which many authors call a Homophonic Substitution cipher).
PolySubstitutionKey	Represents a key for a PolySubstitution cipher (which many authors call a Homophonic Substitution).
RailfenceEngine	Implements the Historical Railfence cipher.
RailfenceKey	Implements the Railfence Key The keyspec, described in TestCipher.java is passed to this file where the blocksize, key and alphabet range is extracted.
SubstitutionEngine	Implements a keyword-based Substitution cipher algorithm for any range of alphabets, including az, AZ, azAZ, azAZ09, printable characters, all ASCII, and any of the Unicode character sets.
SubstitutionKey	Represents a key for a Simple Substitution cipher.
TranspositionEngine	Implements a Transposition cipher algorithm for any range of alphabets, including az, AZ, azAZ, azAZ09, printable characters, and all ASCII.
TranspositionKey	Represents a key for a Transposition cipher.
VigenereEngine	Implements a traditional Vigenere Cipher for the full range of alphabets -- az, AZ, azAZ, azAZ09, printable characters, and all ASCII.
VigenereKey	Represents a key for a Vigenere cipher.