steven, NASA uplink data use encryption while downlink data are unencrypted

送交者: polik 于 2007-12-04, 17:44:47:

because the uplink signal is much stronger on or near earth and the downlink signal is too weak for the intercepters to receive?

no, the command is encrypted/signed for authentication. - steven (177 bytes) 2007-12-04, 17:51:19 (189579)
- i see, thx. (无内容) - polik (0 bytes) 2007-12-04, 18:10:56 (189583)