I meant that I had never heard NASA using digital signature
所有跟贴·加跟贴·新语丝读书论坛
送交者: steven 于 2007-11-28, 10:48:33:
回答: an application of digital image processing for copyrite protection 由 Yush 于 2007-11-28, 10:41:58:
on their pictures. It is not necessary. NASA's image, audio and video are generally not copyrighted. There is no need for digital signature.
所有跟贴:
加跟贴