BlockCodec

Description

abstract class Tinman.Core.Codec.BlockCodec

Derived from: IBlockCodec

Abstract base class for IBlockCodec implementations.

Public / Methods

AES

public static method AES → (2)

mode ⁱⁿ : CodecMode: Encode or decode?
keyData ⁱⁿ : int8 [ ]: [not-null]
Bytes of the cipher key. Must be 128, 192 or 256 bits in length.
returns → IBlockCodec: The created IBlockCodec instance.

Creates a new instance of IBlockCodec that implements the symmetric cipher AES.

RSA

public static method RSA → (3)

mode ⁱⁿ : CodecMode: Encode or decode?
modulus ⁱⁿ : int32 [ ]: [not-null]
The shared modulus N of the key.
exponent ^opt : int32 [ ] = null: The exponent (e or d, depending on IBlockCodec.Mode) of the key. If null, the value 65537 will be used.
returns → IBlockCodec: The created IBlockCodec instance.

Creates a new instance of IBlockCodec that implements the asymmetric cipher RSA.

Separate keys are used for encoding and decoding:

(e, N)
(d, N)

where e is the encoding exponent, d is the decoding exponent and N is the shared modulus. A plaintext message m (i.e. a single input block, interpreted as a big integer value) is encrypted into ciphertext c using this formula:

c = m^e % N
m = c^d % N

Big integer values are specified as arrays of 32-bit integers, in big-endian order.