[SOLVED] OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

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delecolj
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[SOLVED] OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

Postby delecolj » 2018/02/09 18:53:12

Hi,

I get this error. I have a fresh minimal install of Centos 7 with openssl.
kernel Linux 3.10.0-693.17.1

I have updated all the packages but I have this error coming when i am trying to test some encryption scripts:
OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

I have seen that there is quite a few people since Centos 6 with this issue but I have not since a solution for it.

Anyone is able to give some ideas?

Thanks in advance
Last edited by delecolj on 2018/02/09 20:52:02, edited 1 time in total.

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TrevorH
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Re: OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

Postby TrevorH » 2018/02/09 20:06:15

Redhat don't support all possible ciphers in openssl and disable some at build time due to licensing/patent concerns.
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delecolj
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Re: OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

Postby delecolj » 2018/02/09 20:12:58

Thanks is there a list of such ciphers not supported?

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TrevorH
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Re: OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

Postby TrevorH » 2018/02/09 20:27:22

Don't know but it has a command to tell you the opposite: openssl list-cipher-algorithms
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delecolj
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Re: OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

Postby delecolj » 2018/02/09 20:48:57

ok, thanks a lot.

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avij
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Re: [SOLVED] OpenSSL Error: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown group

Postby avij » 2018/02/09 22:58:23

openssl ecparam -list_curves may also be informative.