acf_encrypt() │ ACF 5.5.8

Encrypts a string using PHP. https://bhoover.com/using-php-openssl_encrypt-openssl_decrypt-encrypt-decrypt-data/

No Hooks.

Returns

String|false. Encrypted string, or false if encryption fails.

Usage

acf_encrypt( $data );

$data(string)

The data to encrypt.
Default: ''

Changelog

acf_encrypt() acf encrypt code ^{ACF 6.8.8}

function acf_encrypt( $data = '' ) {

	if ( ! function_exists( 'openssl_encrypt' ) ) {
		return false;
	}

	$key     = wp_hash( 'acf_encrypt' );
	$mac_key = wp_hash( 'acf_encrypt_mac' );
	$iv      = openssl_random_pseudo_bytes( openssl_cipher_iv_length( 'aes-256-cbc' ) );

	$encrypted_data = openssl_encrypt( $data, 'aes-256-cbc', $key, 0, $iv );

	$payload = $encrypted_data . '::' . $iv;
	$hmac    = hash_hmac( 'sha256', $payload, $mac_key, true );

	return base64_encode( $payload . $hmac );
}