The term characterisic function is identified in base64 scheme by the sequence Y2hhcmFjdGVyaXNpYyBmdW5jdGlvbg==, while the MD5 signature is equal to d8d83ea442c14876d9af412db8e36c0a. The ASCII encoding of characterisic function in hexadecimal notation is 636861726163746572697369632066756e6374696f6e.