The term hyperpigmentation is identified in base64 scheme by the sequence aHlwZXJwaWdtZW50YXRpb24=, while the MD5 signature is equal to 6ae1fc5d7a73a9d9f5eb2b6ddc78e4a9. The ASCII encoding of hyperpigmentation in hexadecimal notation is 68797065727069676d656e746174696f6e.