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function is not described

ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push() public WP 1.0

{} It's a method of the class: ParagonIE_Sodium_Crypto{}

No Hooks.

Return

Array. string> Returns a state and a header.

Usage

$result = ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push( $key );
$key(string) (required)
-

Code of ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push() WP 5.7

wp-includes/sodium_compat/src/Crypto.php 
<?php
public static function secretstream_xchacha20poly1305_init_push($key)
{
    # randombytes_buf(out, crypto_secretstream_xchacha20poly1305_HEADERBYTES);
    $out = random_bytes(24);

    # crypto_core_hchacha20(state->k, out, k, NULL);
    $subkey = ParagonIE_Sodium_Core_HChaCha20::hChaCha20($out, $key);
    $state = new ParagonIE_Sodium_Core_SecretStream_State(
        $subkey,
        ParagonIE_Sodium_Core_Util::substr($out, 16, 8) . str_repeat("\0", 4)
    );

    # _crypto_secretstream_xchacha20poly1305_counter_reset(state);
    $state->counterReset();

    # memcpy(STATE_INONCE(state), out + crypto_core_hchacha20_INPUTBYTES,
    #        crypto_secretstream_xchacha20poly1305_INONCEBYTES);
    # memset(state->_pad, 0, sizeof state->_pad);
    return array(
        $state->toString(),
        $out
    );
}