The term hexadecimal digit is identified in base64 scheme by the sequence aGV4YWRlY2ltYWwgZGlnaXQ=, while the MD5 signature is equal to ed29ed6d6da0cc462a856a4e61ca391c. The ASCII encoding of hexadecimal digit in hexadecimal notation is 68657861646563696d616c206469676974.