chacha20-encrypt-string ( string key-bytes nonce-bytes counter -- ciphertext )
ChaCha20 stream cipher

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Vocabulary
crypto.chacha20

Inputs

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

Outputs

ciphertext

a byte-array

Word description
Encrypts a string using ChaCha20, returning ciphertext bytes.

Examples

USING: byte-arrays crypto.chacha20 ; "Hello" 32 <byte-array> 12 <byte-array> 1 chacha20-encrypt-string
! => B{ 215 98 139 210 58 }

Definition

USING: byte-arrays kernel ;

IN: crypto.chacha20

: chacha20-encrypt-string
    ( string key-bytes nonce-bytes counter -- ciphertext )
    [ >byte-array ] 3dip chacha20-crypt-bytes ;