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version 1.127, 2004/03/24 23:36:26 version 1.128, 2004/12/22 02:08:59
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 <img align="left" alt="[OpenBSD]" height="166" width="197" SRC="images/blowfish-notext.jpg">  <img align="left" alt="[OpenBSD]" height="166" width="197" src="images/blowfish-notext.jpg">
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 <hr>  <hr>
   
 <strong>Index</strong><br>  <strong>Index</strong><br>
 <a href="#why">Why do we ship cryptography?</a>.<br>  <a href="#why">Why do we ship cryptography?</a>.<br>
 <a href="#ssh">OpenSSH</a>.<br>  <a href="#ssh">OpenSSH</a>.<br>
 <a href="#prng">Pseudo Random Number Generators</a> (PRNG): ARC4, ...<br>  <a href="#prng">Pseudo Random Number Generators</a> (PRNG): ARC4, ...<br>
 <a href="#hash">Cryptographic Hash Functions</a>: MD5, SHA1, ...<br>  <a href="#hash">Cryptographic Hash Functions</a>: MD5, SHA1, ...<br>
 <a href="#trans">Cryptographic Transforms</a>: DES, Blowfish, ...<br>  <a href="#trans">Cryptographic Transforms</a>: DES, Blowfish, ...<br>
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 As of the 2.6 release, OpenBSD contains  As of the 2.6 release, OpenBSD contains
 <a href="http://www.openssh.com/">OpenSSH</a>, an absolutely free and  <a href="http://www.openssh.com/">OpenSSH</a>, an absolutely free and
 patent unencumbered version of ssh.  patent unencumbered version of ssh.
 <a href="http://www.openssh.com/">OpenSSH</a> interoperated with ssh  <a href="http://www.openssh.com/">OpenSSH</a> interoperated with ssh
 version 1 and had many added features,  version 1 and had many added features,
 <ul>  <ul>
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 <a name="prng"></a>  <a name="prng"></a>
 <h3><font color="#e00000">Pseudo Random Number Generators</font></h3><p>  <h3><font color="#e00000">Pseudo Random Number Generators</font></h3><p>
   
 A Pseudo Random Number Generator (PRNG) provides applications with a stream of  A Pseudo Random Number Generator (PRNG) provides applications with a stream of
 numbers which have certain important properties for system security:<p>  numbers which have certain important properties for system security:<p>
   
 <ul>  <ul>
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 In OpenBSD MD5, SHA1, and RIPEMD-160 are used as Cryptographic Hash Functions,  In OpenBSD MD5, SHA1, and RIPEMD-160 are used as Cryptographic Hash Functions,
 e.g:<p>  e.g:<p>
 <ul>  <ul>
 <li>In <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=skey&amp;sektion=1">S/Key(1)</a>  <li>In <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=skey&amp;sektion=1">S/Key(1)</a>
     to provide one time passwords.      to provide one time passwords.
 <li>In <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ipsec&amp;sektion=4">IPsec(4)</a>  <li>In <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ipsec&amp;sektion=4">IPsec(4)</a>
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 <li><b><a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ises&amp;sektion=4">  <li><b><a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ises&amp;sektion=4">
     Securealink PCC-ISES</a></b><br>      Securealink PCC-ISES</a></b><br>
     The <a href="http://www.safenet-inc.com/technology/chips/safexcel_ises.asp">      The <a href="http://www.safenet-inc.com/technology/chips/safexcel_ises.asp">
     PCC-ISES</a> is a new chipset from the Netherlands.  We have received      PCC-ISES</a> is a new chipset from the Netherlands.  We have received
     sample hardware and documentation, and work on a driver is in progress.      sample hardware and documentation, and work on a driver is in progress.
     At the moment, the driver is capable of feeding random numbers into      At the moment, the driver is capable of feeding random numbers into
     the kernel entropy pool.      the kernel entropy pool.
     <p>      <p>
   
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 <li>Encrypting Virtual Memory.<br>  <li>Encrypting Virtual Memory.<br>
     <a href="events.html#sec2000">Usenix Security 2000</a>,      <a href="events.html#sec2000">Usenix Security 2000</a>,
     <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>      <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
     <a href="papers/swapencrypt.ps">paper</a> and      <a href="papers/swapencrypt.ps">paper</a> and
     <a href="papers/swapencrypt-slides.ps">slides</a>.      <a href="papers/swapencrypt-slides.ps">slides</a>.
 <p>  <p>
 <li>The Design of the OpenBSD Cryptographic Framework.<br>  <li>The Design of the OpenBSD Cryptographic Framework.<br>
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