From mboxrd@z Thu Jan 1 00:00:00 1970 From: Detlev Zundel Date: Wed, 24 Jun 2009 18:45:38 +0200 Subject: [U-Boot] U-book and GPLv3? (fwd) In-Reply-To: <12fb2e608911e671661778990f2f793e.squirrel@webmail.plus.net> (Matthew Lear's message of "Wed, 24 Jun 2009 15:16:05 +0100") References: <20090618145128.69F27832E416@gemini.denx.de> <20090623192634.GB23560@b07421-ec1.am.freescale.net> <200906231541.54291.vapier@gentoo.org> <20090623211459.GL23512@game.jcrosoft.org> <12fb2e608911e671661778990f2f793e.squirrel@webmail.plus.net> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Matthew, thanks for the explanation. >> Don't you mistake "security" for "authenticity"? > > In this context, I believe both terms are interchangeable and effectively > mean the same thing. This is generally not true. These concepts have well defined meanings. I can have a secure communicatins channel with someone I did not authenticate. Also I can have a non-secure communications channel with someone who authenticated himself by some means to me. > It is secure because only authenticated code is allowed to be > executed, thus another step to avoid piracy, hacking of conditional > access systems etc. Running only authenticated code does *not* ensure security, no matter how much this is wished for. But no matter, I now understand that "security" seems to mean "data can only be handled in the way intended by the owners of the data" which is a different concept to me. Cheers Detlev -- FORTRAN's tragic fate has been its wide acceptance, mentally chaining thousands and thousands of programmers to our past mistakes. I pray daily that more of my fellow-programmers may find the means of freeing themselves from the curse of compatibility. -- Edsger W. Dijkstra -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de