The term characteristic curve is identified in base64 scheme by the sequence Y2hhcmFjdGVyaXN0aWMgY3VydmU=, while the MD5 signature is equal to 7cc30f31d72affa083f14b45f5d7d7da. The ASCII encoding of characteristic curve in hexadecimal notation is 6368617261637465726973746963206375727665.