[openssl-users] enable TLS_RSA_WITH_RC4_128_MD5 in openssl 1.1.0e?

[Siyuan Xiang]

Hi Matt,

I tried the following command, it failed.  following is my command.

./config enable-weak-ssl-ciphers --prefix=/opt
make
make DESTDIR=/path/to/dir INSTALL

$ ./openssl version
OpenSSL 1.1.0e  16 Feb 2017

./openssl s_client -cipher "RC4-MD5:@SECLEVEL=0"

error setting cipher list
140369010624144:error:140E6118:SSL
routines:SSL_CIPHER_PROCESS_RULESTR:invalid command:ssl_ciph.c:1337:


./openssl ciphers "RC4-MD5:@SECLEVEL=0"
Error in cipher list
140458428679936:error:1410D0B9:SSL routines:SSL_CTX_set_cipher_list:no
cipher match:ssl/ssl_lib.c:2018:

However, after I change  SSL_CTX_set_XXX function orders,
TLS_RSA_WITH_RC4_128_MD5
do appear in client hello cipher list.

    SSL_CTX_set_security_level(ctx, 0);
    SSL_CTX_set_cipher_list(ctx, "ALL:RC4-MD5");

Regards,
Siyuan
---

On Thu, Jun 1, 2017 at 2:41 AM, Matt Caswell <matt at openssl.org> wrote:

>
>
> On 31/05/17 21:22, Siyuan Xiang wrote:
> > Hi all,
> >
> > I have a legacy server only accept TLS_RSA_WITH_RC4_128_MD5 cipher.
> >
> > I have a client using openssl 1.1.0e. It doesn't include
> > TLS_RSA_WITH_RC4_128_MD5.
> > I have recompiled the openssl using  enable-weak-ssl-ciphers, but it
> > doesn't work
> > but  TLS_RSA_WITH_RC4_128_SHA  is in client hello message.
> >
> > It looks like all MD5 related ciphers are removed.  I tried to
> > use SSL_CTX_set_security_level to
> > set level to 0. but it doesn't work.
> >
> > Do you have any idea how to enable TLS_RSA_WITH_RC4_128_MD5?
>
> How have you configured your ciphersuite list? I can get this to work in
> 1.1.0 using s_server and s_client.
>
> Having built with "enable-weak-ssl-ciphers" I start up s_server like this:
>
> $ openssl s_server -cipher "RC4-MD5:@SECLEVEL=0"
>
> And then run s_client like this:
>
> $ openssl s_client -cipher "RC4-MD5:@SECLEVEL=0"
>
> The connection is successful and uses the RC4-MD5 ciphersuite (aka
> TLS_RSA_WITH_RC4_128_MD5).
>
> Matt
> --
> openssl-users mailing list
> To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20170601/70724e5b/attachment-0001.html>