BlockCipher class abstract

An abstract class representing a block cipher for symmetric encryption and decryption.

Block ciphers operate on fixed-size blocks of data, typically 128 bits (16 bytes) for AES. They provide methods for key initialization, encryption, decryption, and memory cleanup.

Subclasses of this abstract class implement specific block cipher algorithms and provide methods for encryption and decryption of data.

Key Initialization:

  • The setKey method is used to initialize the cipher with an encryption key.

Encryption and Decryption:

  • The encryptBlock method encrypts a single block of data.
  • The decryptBlock method decrypts a single block of data.

Block Size:

  • The blockSize property returns the size of the data block in bytes that the cipher operates on.

Memory Cleanup:

  • The clean method can be used to securely zero any sensitive information or states held by the block cipher instance, ensuring that no secrets are left in memory after use.

Note: This abstract class serves as a foundation for various block ciphers and should be extended to support specific algorithms such as AES or DES.

Implementers

Constructors

BlockCipher()

Properties

blockSize → int
Returns the size of the data block in bytes that the cipher operates on.
no setter
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

clean() → BlockCipher
Clears any sensitive information or states held by the block cipher instance, ensuring that no secrets are left in memory after use.
decryptBlock(List<int> src, [List<int>? dst]) → List<int>
Decrypts a single block of data.
encryptBlock(List<int> src, [List<int>? dst]) → List<int>
Encrypts a single block of data.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
setKey(List<int> key) → BlockCipher
Initializes the cipher with the provided encryption key.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited