Hi Matt,
SSL_CTX_set_security_level(ctx, 0);
SSL_CTX_set_cipher_list(ctx, "ALL:RC4-MD5");
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
---
Siyuan
---
On Thu, Jun 1, 2017 at 2:41 AM, Matt Caswell <matt@xxxxxxxxxxx> 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
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