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	<title>Openvpn --show-ciphers - Revision history</title>
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	<updated>2026-05-12T04:39:14Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://sarwiki.informatik.hu-berlin.de/index.php?title=Openvpn_--show-ciphers&amp;diff=12857&amp;oldid=prev</id>
		<title>Wolfm: Created page with &quot;&lt;pre&gt; C:\Users\wolfm&gt;openvpn --show-ciphers The following ciphers and cipher modes are available for use with OpenVPN.  Each cipher shown below may be use as a parameter to th...&quot;</title>
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		<updated>2018-09-18T12:14:51Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;lt;pre&amp;gt; C:\Users\wolfm&amp;gt;openvpn --show-ciphers The following ciphers and cipher modes are available for use with OpenVPN.  Each cipher shown below may be use as a parameter to th...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;lt;pre&amp;gt;&lt;br /&gt;
C:\Users\wolfm&amp;gt;openvpn --show-ciphers&lt;br /&gt;
The following ciphers and cipher modes are available for use&lt;br /&gt;
with OpenVPN.  Each cipher shown below may be use as a&lt;br /&gt;
parameter to the --cipher option.  The default key size is&lt;br /&gt;
shown as well as whether or not it can be changed with the&lt;br /&gt;
--keysize directive.  Using a CBC or GCM mode is recommended.&lt;br /&gt;
In static key mode only CBC mode is allowed.&lt;br /&gt;
&lt;br /&gt;
AES-128-CBC  (128 bit key, 128 bit block)&lt;br /&gt;
AES-128-CFB  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-128-CFB1  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-128-CFB8  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-128-GCM  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-128-OFB  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-192-CBC  (192 bit key, 128 bit block)&lt;br /&gt;
AES-192-CFB  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-192-CFB1  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-192-CFB8  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-192-GCM  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-192-OFB  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-256-CBC  (256 bit key, 128 bit block)&lt;br /&gt;
AES-256-CFB  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-256-CFB1  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-256-CFB8  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-256-GCM  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
AES-256-OFB  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-128-CBC  (128 bit key, 128 bit block)&lt;br /&gt;
CAMELLIA-128-CFB  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-128-CFB1  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-128-CFB8  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-128-OFB  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-192-CBC  (192 bit key, 128 bit block)&lt;br /&gt;
CAMELLIA-192-CFB  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-192-CFB1  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-192-CFB8  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-192-OFB  (192 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-256-CBC  (256 bit key, 128 bit block)&lt;br /&gt;
CAMELLIA-256-CFB  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-256-CFB1  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-256-CFB8  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
CAMELLIA-256-OFB  (256 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
SEED-CBC  (128 bit key, 128 bit block)&lt;br /&gt;
SEED-CFB  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
SEED-OFB  (128 bit key, 128 bit block, TLS client/server mode only)&lt;br /&gt;
&lt;br /&gt;
The following ciphers have a block size of less than 128 bits,&lt;br /&gt;
and are therefore deprecated.  Do not use unless you have to.&lt;br /&gt;
&lt;br /&gt;
BF-CBC  (128 bit key by default, 64 bit block)&lt;br /&gt;
BF-CFB  (128 bit key by default, 64 bit block, TLS client/server mode only)&lt;br /&gt;
BF-OFB  (128 bit key by default, 64 bit block, TLS client/server mode only)&lt;br /&gt;
CAST5-CBC  (128 bit key by default, 64 bit block)&lt;br /&gt;
CAST5-CFB  (128 bit key by default, 64 bit block, TLS client/server mode only)&lt;br /&gt;
CAST5-OFB  (128 bit key by default, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-CBC  (64 bit key, 64 bit block)&lt;br /&gt;
DES-CFB  (64 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-CFB1  (64 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-CFB8  (64 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-EDE-CBC  (128 bit key, 64 bit block)&lt;br /&gt;
DES-EDE-CFB  (128 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-EDE-OFB  (128 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-EDE3-CBC  (192 bit key, 64 bit block)&lt;br /&gt;
DES-EDE3-CFB  (192 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-EDE3-CFB1  (192 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-EDE3-CFB8  (192 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-EDE3-OFB  (192 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DES-OFB  (64 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
DESX-CBC  (192 bit key, 64 bit block)&lt;br /&gt;
IDEA-CBC  (128 bit key, 64 bit block)&lt;br /&gt;
IDEA-CFB  (128 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
IDEA-OFB  (128 bit key, 64 bit block, TLS client/server mode only)&lt;br /&gt;
RC2-40-CBC  (40 bit key by default, 64 bit block)&lt;br /&gt;
RC2-64-CBC  (64 bit key by default, 64 bit block)&lt;br /&gt;
RC2-CBC  (128 bit key by default, 64 bit block)&lt;br /&gt;
RC2-CFB  (128 bit key by default, 64 bit block, TLS client/server mode only)&lt;br /&gt;
RC2-OFB  (128 bit key by default, 64 bit block, TLS client/server mode only)&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;/div&gt;</summary>
		<author><name>Wolfm</name></author>
	</entry>
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