sodium_crypto_stream_xchacha20

(PHP 8 >= 8.1.0)

sodium_crypto_stream_xchacha20 — Expands the key and nonce into a keystream of pseudorandom bytes

Description

sodium_crypto_stream_xchacha20(int $length, string $nonce, string $key): string

Expands the key and nonce into a keystream of pseudorandom bytes.

Parameters

length

Number of bytes desired.

nonce

24-byte nonce.

key

Key, possibly generated from sodium_crypto_stream_xchacha20_keygen().

Return Values

Returns a pseudorandom stream that can be used with sodium_crypto_stream_xchacha20_xor().