The term isoroku yamamoto is identified in base64 scheme by the sequence aXNvcm9rdSB5YW1hbW90bw==, while the MD5 signature is equal to fd13357ddc16c74b9a32aafb84789e4b. The ASCII encoding of isoroku yamamoto in hexadecimal notation is 69736f726f6b752079616d616d6f746f.