The term background radiation is identified in base64 scheme by the sequence YmFja2dyb3VuZCByYWRpYXRpb24=, while the MD5 signature is equal to 9ab3373f6872df6c7b943cebfce8d90e. The ASCII encoding of background radiation in hexadecimal notation is 6261636b67726f756e6420726164696174696f6e.