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2021-09-29
08:42 Ticket [305ee10b86] support of openssl options in tls:init status still Open with 5 other changes artifact: a2bbedc6f5 user: anonymous
08:34 New ticket [305ee10b86]. artifact: be20e14a09 user: anonymous

Ticket Hash: 305ee10b8666aa7a3107dc2f1a62b2c3abe35353
Title: support of openssl options in tls:init
Status: Open Type: Feature Request
Severity: Important Priority: Immediate
Subsystem: Resolution: Open
Last Modified: 2021-09-29 08:42:00
Version Found In: 1.7.22
User Comments:
anonymous added on 2021-09-29 08:34:09:

In some cases it is required to change openssl options running tcltls. There may be more and other options as I need and describe here.

E.g. running tclhttpd with tcltls needs openssl to change client to server cipher order to pass SSL Labs's 'SSL Server Rating Guide' (version 2009q from 2020-01-30) as grade A.

I don't know a better way as to add SSL_OP_CIPHER_SERVER_PREFERENCE to tcl.c but would prefer to have an option in ::tls::init

tls.c:1215 SSL_CTX_set_options( ctx, SSL_OP_ALL SSL_OP_CIPHER_SERVER_PREFERENCE ); /* all SSL bug workarounds */

anonymous added on 2021-09-29 08:42:00:

Of cause the added line should be

tls.c:1215 SSL_CTX_set_options( ctx, SSL_OP_CIPHER_SERVER_PREFERENCE ); /* force cipher order selection by server */