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add 2048 bits of DH params for nginx, postfix, dovecot

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nginx/postfix use a new pre-generated dh2048.pem file. dovecot generates the bits on its own.

ssllabs.com reports that TLS_DHE ciphers went from 1024 to 2048 bits as expected. The ECDHE ciphers remain at 256 bits --- no idea what that really means. (This tests nginx only. I haven't tested postfix/dovecot.)

see https://discourse.mailinabox.email/t/fips-ready-for-ssl-dhec-key-exchange/76/3
This commit is contained in:
Joshua Tauberer
2014-09-26 22:01:38 +00:00
parent c2eb8e5330
commit 39bca053ed
5 changed files with 17 additions and 4 deletions
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conf/nginx-ssl.conf
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@@ -55,7 +55,7 @@ spdy_headers_comp 0;
# openssl dhparam -outform pem -out dhparam2048.pem 2048
#
# Note: raising the bits to 2048 excludes Java 6 clients. Comment out if a problem.
#ssl_dhparam /path/to/dhparam2048.pem;
ssl_dhparam STORAGE_ROOT/ssl/dh2048.pem;
# OCSP stapling - means nginx will poll the CA for signed OCSP responses,