The term school principal is identified in base64 scheme by the sequence c2Nob29sIHByaW5jaXBhbA==, while the MD5 signature is equal to 29c287d6ebc13d46d4aadbd7a32ad3f4. The ASCII encoding of school principal in hexadecimal notation is 7363686f6f6c207072696e636970616c.