cryptography-core/dev.whyoleg.cryptography.algorithms/AES/OFB

OFB

@SubclassOptInRequired(markerClass = [CryptographyProviderApi::class])

interface OFB : AES<AES.OFB.Key> (source)

AES in Output Feedback (OFB) mode, a stream cipher as defined in NIST SP 800-38A.

Turns AES into a stream cipher by repeatedly encrypting the previous output block. Uses a 128-bit (16-byte) IV by default. Does not provide authentication — use GCM when integrity is required.

val key = provider.get(AES.OFB).keyGenerator().generateKey()
val ciphertext = key.cipher().encrypt(plaintext)

Types

Companion

object Companion : CryptographyAlgorithmId<AES.OFB>

Key

@SubclassOptInRequired(markerClass = [CryptographyProviderApi::class])

interface Key : AES.Key

An AES-OFB key that provides encryption and decryption via cipher.

Properties

open override val id: CryptographyAlgorithmId<AES.OFB>

The typed identifier that uniquely distinguishes this algorithm and is used to look it up from a CryptographyProvider.

Functions

keyDecoder

abstract fun keyDecoder(): Decoder<AES.Key.Format, AES.OFB.Key>

Returns a Decoder that decodes AES keys from the specified Key.Format.

keyGenerator

abstract fun keyGenerator(keySize: BinarySize = Key.Size.B256): KeyGenerator<AES.OFB.Key>

Returns a KeyGenerator that generates AES keys of the given keySize.