AffineCipher Class Reference

Implementation of the Affine substitution cipher. More...

Inheritance diagram for AffineCipher:

Collaboration diagram for AffineCipher:

Public Member Functions
	constructor (a:number=5, b:number=8)
	Constructor for Affine cipher.

Data Fields
readonly	CipherName = "Affine"
	Identifier name for this cipher.
Data Fields inherited from BaseCipher
abstract abstract encode(plaintext:string, key?:any) abstract decode(ciphertext:string, key?:any) readonly	CipherName: string
	Abstract method to encode plaintext.

Additional Inherited Members
Static Public Attributes inherited from BaseCipher
static readonly	ALPHABET: string = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	Standard English alphabet for cipher operations.

Detailed Description

Implementation of the Affine substitution cipher.

Uses linear mathematical transformation E(x) = (ax + b) mod 26 where 'a' is the multiplicative key (must be coprime to 26) and 'b' is the additive key. This provides more complexity than simple Caesar cipher.

Definition at line 22 of file affine.ts.

Member Function Documentation

constructor()

AffineCipher::constructor ( a:number = 5, b:number = 8 )

inline

Constructor for Affine cipher.

Parameters

a	Multiplicative key (default: 5, must be coprime to 26)
b	Additive key (default: 8)

Exceptions

Error

if 'a' is not coprime to 26

Initializes the cipher with the given coefficients. The multiplicative coefficient 'a' must be coprime to 26 to ensure the cipher is reversible.

Definition at line 46 of file affine.ts.

Field Documentation

CipherName

readonly AffineCipher::CipherName = "Affine"

Identifier name for this cipher.

Definition at line 36 of file affine.ts.

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The documentation for this class was generated from the following file:

• vscode/asperheader/src/modules/ciphers/flavoured/affine.ts