`GpuCtrMode`

@memory_only
struct GpuCtrMode[C: AsyncBlockCipherDecryptable & AsyncBlockCipherEncryptable & Deinitable & Movable, SIZE: Int = C.BLOCK_SIZE, BIG_ENDIAN: Bool = True]

Counter (CTR) block cipher mode over an async (device-backed) cipher.

NIST SP 800-38A, Section 6.5: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38a.pdf

Each keystream block is produced by its own awaited cipher call. SIZE and BIG_ENDIAN are as in CtrMode.

Aliases

BLOCK_SIZE = C.BLOCK_SIZE

Parameters

C (AsyncBlockCipherDecryptable & AsyncBlockCipherEncryptable & Deinitable & Movable)
SIZE (Int)
BIG_ENDIAN (Bool)

Implemented traits

AnyType, AsyncBlockCipherDecryptable, AsyncBlockCipherEncryptable, Deinitable, Movable

Methods

`init`

fn def __init__(out self, var cipher: C, var ctr: Array[UInt8, C.BLOCK_SIZE])

Initialize from a fully-assembled initial counter block.

Args:

cipher (C)
ctr (Array[UInt8, C.BLOCK_SIZE])
self (Self)

Returns:

Self

`encrypt`

fn def encrypt[o: MutOrigin](mut self, ctx: Context, data: Span[UInt8, o])

Parameters:

o (MutOrigin)

Args:

self (Self)
ctx (Context)
data (Span[UInt8, o])

Raises:

`decrypt`

fn def decrypt[o: MutOrigin](mut self, ctx: Context, data: Span[UInt8, o])

Parameters:

o (MutOrigin)

Args:

self (Self)
ctx (Context)
data (Span[UInt8, o])

Raises: