error: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 11f63c51: BAD
or
CURL Error: 77
In order to fix it do the following:wget http://mirror.centos.org/centos/6/updates/x86_64/Packages/nss-softokn-fr...
rpm2cpio nss-softokn-freebl-3.14.3-19.el6_6.x86_64.rpm | cpio -idmv
cd lib64
cp libfreeblpriv3.* /lib64
yum update