chacha20-crypt-bytes ( data key-bytes nonce-bytes counter -- result )
ChaCha20 stream cipher

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Vocabulary
crypto.chacha20

Inputs

data	a byte-array
key-bytes	32-byte array
nonce-bytes	12-byte array
counter	starting block counter

Outputs

result

a byte-array

Word description
Encrypts or decrypts data using ChaCha20 with raw byte keys and nonces. Converts bytes to u32 arrays internally.

Examples

USING: byte-arrays crypto.chacha20 ; "Hello" >byte-array 32 <byte-array> 12 <byte-array> 1 chacha20-crypt-bytes 32 <byte-array> 12 <byte-array> 1 chacha20-crypt-bytes >string
! => "Hello"

Definition

USING: crypto.chacha20.private kernel ;

IN: crypto.chacha20

: chacha20-crypt-bytes
    ( data key-bytes nonce-bytes counter -- result )
    [ bytes>u32s ] 2dip [ bytes>u32s ] dip chacha20-crypt ;