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As of version 3.5.0 the TLS-Exporter function is not yet implemented in mbed TLS, and the exporter_master_secret is not exposed to the application either. Falling back to an older PRF when claiming to use TLS1.3 seems like false advertising. Change-Id: If4e1c4af9831eb1090ccb3a3c4d3e76b413f0708 Signed-off-by: Max Fillinger <maximilian.fillinger@foxcrypto.com> Acked-by: Frank Lichtenheld <frank@lichtenheld.com> Message-Id: <20231115151740.23948-1-gert@greenie.muc.de> URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg27453.html Signed-off-by: Gert Doering <gert@greenie.muc.de> (cherry picked from commit efad93d049c318a3bd9ea5956c6ac8237b8d6d70)
47 lines
1.6 KiB
Plaintext
47 lines
1.6 KiB
Plaintext
This version of OpenVPN has mbed TLS support. To enable, follow the
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instructions below:
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To build and install,
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./configure --with-crypto-library=mbedtls
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make
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make install
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This version requires mbed TLS version >= 2.0.0 or >= 3.2.1.
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*************************************************************************
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Warning:
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As of mbed TLS 2.17, it can be licensed *only* under the Apache v2.0 license.
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That license is incompatible with OpenVPN's GPLv2.
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We are currently in the process of resolving this problem, but for now, if you
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wish to distribute OpenVPN linked with mbed TLS, there are two options:
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* Ensure that your case falls under the system library exception in GPLv2, or
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* Use an earlier version of mbed TLS. Version 2.16.12 is the last release
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that may be licensed under GPLv2. Unfortunately, this version is
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unsupported and won't receive any more updates.
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*************************************************************************
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Due to limitations in the mbed TLS library, the following features are missing
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in the mbed TLS version of OpenVPN:
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* PKCS#12 file support
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* --capath support - Loading certificate authorities from a directory
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* Windows CryptoAPI support
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* X.509 alternative username fields (must be "CN")
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Plugin/Script features:
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* X.509 subject line has a different format than the OpenSSL subject line
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* X.509 certificate tracking
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*************************************************************************
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Mbed TLS 3 has implemented (parts of) the TLS 1.3 protocol, but we have disabled
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support in OpenVPN because the TLS-Exporter function is not yet implemented.
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