[erlang-questions] TLS cipher suite with Galois Counter Mode (GCM)
Wed Sep 9 11:23:37 CEST 2015
----- Original Message -----
> From: "John Foldager" <>
> Sent: Wednesday, September 9, 2015 9:39:52 AM
> Subject: Re: [erlang-questions] TLS cipher suite with Galois Counter Mode (GCM)
> Thanks Danil.
> We're currently using Erlang 16 b3, so we'll check if we can upgrade
> to Erlang OTP 18 instead. We just need to verify with RabbitMQ if it
> is supported or not.
Original pull request for GCM support was https://github.com/erlang/otp/pull/372.
Those change *might* be applicable to R17 as well (if you need to stay with R17).
R16 is most certainly to old for those changes.
> On Tue, Sep 8, 2015 at 2:38 PM, Danil Zagoskin <> wrote:
>> Hi, John!
>> What OTP version do you use?
>> OTP17 and prior do not support GCM, you need OTP18.
>> Old possible ciphers:
>> New possible ciphers:
>> (note the aes_128_gcm and aes_256_gcm ciphers).
>> On Tue, Sep 8, 2015 at 2:58 PM, John Foldager <>
>>> We're using RabbitMQ and now have a request for supporting the following
>>> cipher suites:
>>> TLS_RSA_WITH_AES_128_GCM_SHA256 (0X009C)
>>> TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0XC02F)
>>> TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0X009E)
>>> TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (0XC02B)
>>> However, if we use the following commands from the Erlang CLI we don't see
>>> these cipher suites:
>>> io:format("~p", [ssl:cipher_suites(openssl)]).
>>> io:format("~p", [ssl:cipher_suites(erlang)]).
>>> So how can we make these cipher suites available to Erlang.... and then
>>> RabbitMQ that runs on top of Erlang?
>>> erlang-questions mailing list
>> Danil Zagoskin |
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