Re: Enabling RC4 from command line tools in OpenSSL 3.1

That was a very good idea, but sadly still doesn't work


DYLD_LIBRARY_PATH=`cd .. && pwd` ./openssl s_client -tls1 -cipher RC4  -provider-path /Users/wladd/code/openssl/providers/ -provider legacy

004CA1EE01000000:error:0A0000A1:SSL routines:SSL_CTX_new_ex:library has no ciphers:ssl/ssl_lib.c:3474


Suspect something went awry in configuring compiling that.


________________________________
From: Dmitry Belyavsky <[email protected]>
Sent: Friday, September 6, 2024 11:25:46 AM
To: Ladd, Watson
Cc: [email protected]
Subject: Re: Enabling RC4 from command line tools in OpenSSL 3.1

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I think you should load the legacy provider. The default provider
doesn't implement RC4.

On Fri, Sep 6, 2024 at 8:04 PM 'Ladd, Watson' via openssl-users
<[email protected]> wrote:
>
> Dear users,
>
>
> I have been struggling to sort out what compile flags and arguments are required to get s_client from OpenSSL 3.1.7 to connect to a server with only RC4 enabled. I thought ./Configure enable-rc4 enable-weak-ssl-ciphers would be enough, and then  ./openssl s_client -tls1 -cipher RC4. However this results in
>
> Call to SSL_CONF_cmd(-cipher, RC4) failed
>
> 004CA1EE01000000:error:0A0000B9:SSL routines:SSL_CTX_set_cipher_list:no cipher match:ssl/ssl_lib.c:2909
>
>
> which surprises me.
>
>
> What am I missing?
>
>
> Sincerely,
>
> Watson Ladd
>
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--
SY, Dmitry Belyavsky

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