From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <0268aca8a93ae163523c43f0c7addca9@quintile.net> From: "Steve Simon" Date: Wed, 4 Oct 2006 13:00:03 +0100 To: 9fans@cse.psu.edu MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: [9fans] OT: the simplest public key encryption code... Topicbox-Message-UUID: c4da2994-ead1-11e9-9d60-3106f5b1d025 I ask here as those who read this list have an understanding of the word simple. I am after some very simple public key encryption code which I intend to use to encrypt the md5 of a license file on an embedded system - so in needs to be really small and simple. I am tempeted to use the plan9 RSA code, but is there somthing else even simpler about? Perhaps less secure than RSA but stronger than a password embedded in the code, XORed with 0xdeadbeef :-) Anyone seen anything on the net? -Steve From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <283f5df10610040849s13446537ke08df0d6f214e9a3@mail.gmail.com> Date: Wed, 4 Oct 2006 11:49:46 -0400 From: "LiteStar numnums" To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu> Subject: Re: [9fans] OT: the simplest public key encryption code... In-Reply-To: <0268aca8a93ae163523c43f0c7addca9@quintile.net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_104052_25770810.1159976986278" References: <0268aca8a93ae163523c43f0c7addca9@quintile.net> Topicbox-Message-UUID: c4e876ac-ead1-11e9-9d60-3106f5b1d025 ------=_Part_104052_25770810.1159976986278 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline TEA and XTEA are really, really simple and XTEA is resonably secure. XXTEA & Block TEA have weaknesses, but XTEA should be simple enough & fast enough for an embedded system. Good Luck, -- Sztefan http://en.wikipedia.org/wiki/XTEA http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm On 10/4/06, Steve Simon wrote: > > I ask here as those who read this list have an understanding of the word > simple. > > I am after some very simple public key encryption code which I intend to > use to > encrypt the md5 of a license file on an embedded system - so in needs to > be > really small and simple. > > I am tempeted to use the plan9 RSA code, but is there somthing else even > simpler > about? Perhaps less secure than RSA but stronger than a password embedded > in > the code, XORed with 0xdeadbeef :-) > > Anyone seen anything on the net? > > -Steve > --=20 If work and leisure are soon to be subordinated to this one utopian principle -- absolute busyness -- then utopia and melancholy will come to coincide: an age without conflict will dawn, perpetually busy -- and withou= t consciousness. -- G=FCnter Grass ------=_Part_104052_25770810.1159976986278 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline TEA and XTEA are really, really simple and XTEA is resonably secure.
XX= TEA & Block TEA have weaknesses, but XTEA should be simple enough &=
fast enough for an embedded system.
Good Luck,
 -- Sztefan<= br>
http://en.wikipedia.org/w= iki/XTEA
http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm

<= div> On 10/4/06, Steve= Simon <steve@quintile.net= > wrote:
I ask here as those who read this list have an understanding of the word si= mple.

I am after some very simple public key encryption code which I= intend to use to
encrypt the md5 of a license file on an embedded syste= m - so in needs to be
really small and simple.

I am tempeted to use the plan9 RSA code= , but is there somthing else even simpler
about? Perhaps less secure tha= n RSA but stronger than a password embedded in
the code, XORed with 0xde= adbeef :-)

Anyone seen anything on the net?

-Steve



--
If work and leisure are soon to be subor= dinated to this one utopian principle -- absolute busyness -- then utopia a= nd melancholy will come to coincide: an age without conflict will dawn, per= petually busy -- and without consciousness.

-- G=FCnter Grass ------=_Part_104052_25770810.1159976986278-- From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <6b7cc3fc199d6e4bb43019c261987dd9@quintile.net> From: "Steve Simon" Date: Wed, 4 Oct 2006 18:29:07 +0100 To: 9fans@cse.psu.edu Subject: Re: [9fans] OT: the simplest public key encryption code... In-Reply-To: <283f5df10610040849s13446537ke08df0d6f214e9a3@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Topicbox-Message-UUID: c4f11d34-ead1-11e9-9d60-3106f5b1d025 Thanks for the pointers guys but I believe TEA and blowfish are not public key systems, perhaps my terminology is broken, I am after a twin key system, seperate and different encryption and decryption keys. somthing like RSA or eliptic curves... -Steve From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <283f5df10610041041l2db80dc2q1d492fc8e17397cf@mail.gmail.com> Date: Wed, 4 Oct 2006 13:41:04 -0400 From: "LiteStar numnums" To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu> Subject: Re: [9fans] OT: the simplest public key encryption code... In-Reply-To: <6b7cc3fc199d6e4bb43019c261987dd9@quintile.net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_106661_23379462.1159983664086" References: <283f5df10610040849s13446537ke08df0d6f214e9a3@mail.gmail.com> <6b7cc3fc199d6e4bb43019c261987dd9@quintile.net> Topicbox-Message-UUID: c4f6b924-ead1-11e9-9d60-3106f5b1d025 ------=_Part_106661_23379462.1159983664086 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Ahh. No, neither TEA nor XTEA fit that category. I'll take the rest to a private message... On 10/4/06, Steve Simon wrote: > > Thanks for the pointers guys but I believe TEA and blowfish are > not public key systems, perhaps my terminology is broken, I am after > a twin key system, seperate and different encryption and decryption > keys. > > somthing like RSA or eliptic curves... > > -Steve > --=20 If work and leisure are soon to be subordinated to this one utopian principle -- absolute busyness -- then utopia and melancholy will come to coincide: an age without conflict will dawn, perpetually busy -- and withou= t consciousness. -- G=FCnter Grass ------=_Part_106661_23379462.1159983664086 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Ahh. No, neither TEA nor XTEA  fit that category.
 I'll take t= he rest to a private message...
On 10/4= /06, Steve Simon < steve@quintile.net> wrote:
Thanks for the pointers guys but I believe TEA and b= lowfish are
not public key systems, perhaps my terminology is broken, I am aftera twin key system, seperate and different encryption and decryption
key= s.

somthing like RSA or eliptic curves...

-Steve



--
If work and leisure are soon to be s= ubordinated to this one utopian principle -- absolute busyness -- then utop= ia and melancholy will come to coincide: an age without conflict will dawn,= perpetually busy -- and without consciousness.

-- G=FCnter Grass ------=_Part_106661_23379462.1159983664086-- From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <45260AEF.8050901@enerla.net> Date: Fri, 6 Oct 2006 09:51:11 +0200 From: bituman User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Subject: Re: [9fans] OT: the simplest public key encryption code... References: <283f5df10610040849s13446537ke08df0d6f214e9a3@mail.gmail.com> <6b7cc3fc199d6e4bb43019c261987dd9@quintile.net> <283f5df10610041041l2db80dc2q1d492fc8e17397cf@mail.gmail.com> In-Reply-To: <283f5df10610041041l2db80dc2q1d492fc8e17397cf@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Topicbox-Message-UUID: c6d09af8-ead1-11e9-9d60-3106f5b1d025 LiteStar numnums wrote: > Ahh. No, neither TEA nor XTEA fit that category. > I'll take the rest to a private message... > On 10/4/06, *Steve Simon* < steve@quintile.net=20 > > wrote: > > Thanks for the pointers guys but I believe TEA and blowfish are > not public key systems, perhaps my terminology is broken, I am afte= r > a twin key system, seperate and different encryption and decryption > keys. > > somthing like RSA or eliptic curves... > > -Steve > > > > > --=20 > If work and leisure are soon to be subordinated to this one utopian=20 > principle -- absolute busyness -- then utopia and melancholy will come=20 > to coincide: an age without conflict will dawn, perpetually busy --=20 > and without consciousness. > > -- G=FCnter Grass=20 Id be glad if you forwarded those messages to me : ) im also interested. Not a real project just curiosity. Thank you Sandor Nagy