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(PHP 8 >= 8.1.0)
sodium_crypto_stream_xchacha20 — Expands the key and nonce into a keystream of pseudorandom bytes
$length, string $nonce, string $key): string
Expands the key and nonce into a keystream of pseudorandom bytes.
length
Number of bytes desired.
nonce
24-byte nonce.
key
Key, possibly generated from sodium_crypto_stream_xchacha20_keygen().
Returns a pseudorandom stream that can be used with sodium_crypto_stream_xchacha20_xor().
