Encrypt/decrypt passwords

wp_encrypt_decrypts_password.php

<?php
/**
	 * Encrypt password using OpenSSL
	 *
	 * @param string $password The password to encrypt.
	 */
	public function encrypt_password( $password ) {
		$encryption_key = base64_decode( SECURE_AUTH_KEY );
		$iv = openssl_random_pseudo_bytes( openssl_cipher_iv_length( 'aes-256-cbc' ) );
		$encrypted = openssl_encrypt( $password, 'aes-256-cbc', $encryption_key, OPENSSL_RAW_DATA, $iv );
		// Append the $iv variable to use for decrypting later.
		return base64_encode( $encrypted . '::' . $iv );
	}
	/**
	 * Decrypt password using OpenSSL
	 *
	 * @param string $password The password to decrypt.
	 */
	public function decrypt_password( $password ) {
		$encryption_key = base64_decode( SECURE_AUTH_KEY );
		// Grab the $iv from earlier, to decrypt.
		list( $encrypted_data, $iv ) = explode( '::', base64_decode( $password ), 2 );
		return openssl_decrypt( $encrypted_data, 'aes-256-cbc', $encryption_key, OPENSSL_RAW_DATA, $iv );
	}