The term indirect expression is identified in base64 scheme by the sequence aW5kaXJlY3QgZXhwcmVzc2lvbg==, while the MD5 signature is equal to ed4376a3623dabccd88dce4e43ac69fd. The ASCII encoding of indirect expression in hexadecimal notation is 696e6469726563742065787072657373696f6e.