There are two types of encryption: one that will prevent your sister from reading your diary and one that will prevent your government.
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About Bruce Schneier
Bruce Schneier was a contemporary American computer scientist. Bruce Schneier is an American cryptographer, computer security professional, privacy specialist, and writer. Schneier is an Adjunct Lecturer in Public Policy at the Harvard Kennedy School and a Fellow at the Berkman Klein Center for Internet & Society as of November, 2013. Read more on Wikipedia →