The term encyclical letter is identified in base64 scheme by the sequence ZW5jeWNsaWNhbCBsZXR0ZXI=, while the MD5 signature is equal to 1ad1c5e3e07e553acc0cdcc78306888b. The ASCII encoding of encyclical letter in hexadecimal notation is 656e6379636c6963616c206c6574746572.