The term diacritical mark is identified in base64 scheme by the sequence ZGlhY3JpdGljYWwgbWFyaw==, while the MD5 signature is equal to 234f29b233cf5102e2c5fead6a4940b7. The ASCII encoding of diacritical mark in hexadecimal notation is 646961637269746963616c206d61726b.