The term hexadecimal number system is identified in base64 scheme by the sequence aGV4YWRlY2ltYWwgbnVtYmVyIHN5c3RlbQ==, while the MD5 signature is equal to 8b59b83b56f57f0439908ee852a5415c. The ASCII encoding of hexadecimal number system in hexadecimal notation is 68657861646563696d616c206e756d6265722073797374656d.