Configure Smart Card Redirection on a RHEL 8.x Virtual Machine

To configure smart card redirection on a RHEL 8.x virtual machine (VM), install the libraries on which the feature depends, the root CA certificate to support the trusted authentication of smart cards, and the required PC/SC Lite library.

Prerequisites

Integrate a RHEL 8.x Virtual Machine with Active Directory for Smart Card Redirection

Procedure

Install the required libraries.

# yum install -y opensc pcsc-lite pcsc-lite-libs pcsc-lite-ccid nss-tools

Enable the pcscd service.

# systemctl enable pcscd
# systemctl start pcscd

Make sure that the /etc/sssd/sssd.conf configuration file contains the following lines, which enable smart card authentication.
```
[pam]
pam_cert_auth = True
```

Copy the required CA certificate to /etc/sssd/pki/sssd_auth_ca_db.pem.

# openssl x509 -inform der -in certificate.cer -out certificate.pem
# cp certificate.pem /etc/sssd/pki/sssd_auth_ca_db.pem

To verify the status of the smart card, run the following pkcs11-tool commands and confirm that they return the correct output.
```
# pkcs11-tool -L

# pkcs11-tool --login -O

# pkcs11-tool --test --login
```
Set up the PKCS11 module.
```
cp libcmP11.so /usr/lib64/
```

Create the /usr/share/p11-kit/modules/libcmP11.module file. Add the following content to the file.

# This file describes how to load the opensc module
# See: http://p11-glue.freedesktop.org/doc/p11-kit/config.html
 
# This is a relative path, which means it will be loaded from
# the p11-kit default path which is usually $(libdir)/pkcs11.
# Doing it this way allows for packagers to package opensc for
# 32-bit and 64-bit and make them parallel installable
module: /usr/lib64/libcmP11.so
priority: 99

Update PC/SC Lite to version 1.8.8.

# yum install -y git flex autoconf automake libtool libudev-devel flex
# git clone https://salsa.debian.org/rousseau/PCSC.git
# cd PCSC
# git checkout -b pcsc-1.8.8 1.8.8
# ./bootstrap
# ./configure --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu 
     --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr 
     --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share 
     --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec 
     --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man 
     --infodir=/usr/share/info --disable-static --enable-usbdropdir=/usr/lib64/pcsc/drivers
# make
# make install

Disable SELinux by editing the /etc/selinux/config configuration file such that it includes the following line:
```
SELINUX=disabled
```
Install the Horizon Agent package, with smart card redirection enabled.
```
# sudo ./install_viewagent.sh -m yes
```
Restart the virtual machine and log back in.