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27 lines
1.3 KiB
Plaintext
27 lines
1.3 KiB
Plaintext
o Major features:
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- Servers can now enable the ECDHE TLS ciphersuites when available
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and appropriate. These ciphersuites let us negotiate forward-
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secure TLS secret keys more safely and more efficiently than with
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our previous use of Diffie Hellman modulo a 1024-bit prime.
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By default, public servers prefer the (faster) P224 group, and
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bridges prefer the (more common) P256 group; you can override this
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with the TLSECGroup option.
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Enabling these ciphers was a little tricky, since for a long
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time, clients had been claiming to support them without
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actually doing so, in order to foil fingerprinting. But with
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the client-side implementation of proposal 198 in
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0.2.3.17-beta, clients can now match the ciphers from recent
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firefox versions *and* list the ciphers they actually mean, so
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servers can believe such clients when they advertise ECDHE
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support in their TLS ClientHello messages.
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This feature requires clients running 0.2.3.17-beta or later,
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and requires both sides to be running OpenSSL 1.0.0 or later
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with ECC support. OpenSSL 1.0.1, with the compile-time option
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"enable-ec_nistp_64_gcc_128", is highly recommended.
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Implements the server side of proposal 198; closes ticket
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7200.
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