How To Install crypto-policies on CentOS 8

crypto-policies is System-wide crypto policies System-wide crypto policies

Introduction

In this tutorial we learn how to install crypto-policies on CentOS 8.

What is `crypto-policies`

This package provides pre-built configuration files with cryptographic policies for various cryptographic back-ends, such as SSL/TLS libraries. crypto-policies 20210209 1.gitbfb6bed.el8_3 noarch 62 k crypto-policies-20210209-1.gitbfb6bed.el8_3.src.rpm baseos System-wide crypto policies https LGPLv2+ This package provides pre-built configuration files with cryptographic policies for various cryptographic back-ends, such as SSL/TLS libraries.

We can use yum or dnf to install crypto-policies on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install crypto-policies.

Install crypto-policies on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install crypto-policies using dnf by running the following command:

sudo dnf -y install crypto-policies

Install crypto-policies on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install crypto-policies using yum by running the following command:

sudo yum -y install crypto-policies

How To Uninstall crypto-policies on CentOS 8

To uninstall only the crypto-policies package we can use the following command:

sudo dnf remove crypto-policies

crypto-policies Package Contents on CentOS 8

/etc/crypto-policies
/etc/crypto-policies/back-ends
/etc/crypto-policies/back-ends/bind.config
/etc/crypto-policies/back-ends/gnutls.config
/etc/crypto-policies/back-ends/java.config
/etc/crypto-policies/back-ends/krb5.config
/etc/crypto-policies/back-ends/libreswan.config
/etc/crypto-policies/back-ends/libssh.config
/etc/crypto-policies/back-ends/nss.config
/etc/crypto-policies/back-ends/openssh.config
/etc/crypto-policies/back-ends/opensshserver.config
/etc/crypto-policies/back-ends/openssl.config
/etc/crypto-policies/back-ends/opensslcnf.config
/etc/crypto-policies/config
/etc/crypto-policies/local.d
/etc/crypto-policies/policies
/etc/crypto-policies/policies/modules
/etc/crypto-policies/state
/etc/crypto-policies/state/CURRENT.pol
/etc/crypto-policies/state/current
/usr/share/crypto-policies
/usr/share/crypto-policies/DEFAULT
/usr/share/crypto-policies/DEFAULT/bind.txt
/usr/share/crypto-policies/DEFAULT/gnutls.txt
/usr/share/crypto-policies/DEFAULT/java.txt
/usr/share/crypto-policies/DEFAULT/krb5.txt
/usr/share/crypto-policies/DEFAULT/libreswan.txt
/usr/share/crypto-policies/DEFAULT/libssh.txt
/usr/share/crypto-policies/DEFAULT/nss.txt
/usr/share/crypto-policies/DEFAULT/openssh.txt
/usr/share/crypto-policies/DEFAULT/opensshserver.txt
/usr/share/crypto-policies/DEFAULT/openssl.txt
/usr/share/crypto-policies/DEFAULT/opensslcnf.txt
/usr/share/crypto-policies/EMPTY
/usr/share/crypto-policies/EMPTY/bind.txt
/usr/share/crypto-policies/EMPTY/gnutls.txt
/usr/share/crypto-policies/EMPTY/java.txt
/usr/share/crypto-policies/EMPTY/krb5.txt
/usr/share/crypto-policies/EMPTY/libreswan.txt
/usr/share/crypto-policies/EMPTY/libssh.txt
/usr/share/crypto-policies/EMPTY/nss.txt
/usr/share/crypto-policies/EMPTY/openssh.txt
/usr/share/crypto-policies/EMPTY/opensshserver.txt
/usr/share/crypto-policies/EMPTY/openssl.txt
/usr/share/crypto-policies/EMPTY/opensslcnf.txt
/usr/share/crypto-policies/FIPS
/usr/share/crypto-policies/FIPS/bind.txt
/usr/share/crypto-policies/FIPS/gnutls.txt
/usr/share/crypto-policies/FIPS/java.txt
/usr/share/crypto-policies/FIPS/krb5.txt
/usr/share/crypto-policies/FIPS/libreswan.txt
/usr/share/crypto-policies/FIPS/libssh.txt
/usr/share/crypto-policies/FIPS/nss.txt
/usr/share/crypto-policies/FIPS/openssh.txt
/usr/share/crypto-policies/FIPS/opensshserver.txt
/usr/share/crypto-policies/FIPS/openssl.txt
/usr/share/crypto-policies/FIPS/opensslcnf.txt
/usr/share/crypto-policies/FUTURE
/usr/share/crypto-policies/FUTURE/bind.txt
/usr/share/crypto-policies/FUTURE/gnutls.txt
/usr/share/crypto-policies/FUTURE/java.txt
/usr/share/crypto-policies/FUTURE/krb5.txt
/usr/share/crypto-policies/FUTURE/libreswan.txt
/usr/share/crypto-policies/FUTURE/libssh.txt
/usr/share/crypto-policies/FUTURE/nss.txt
/usr/share/crypto-policies/FUTURE/openssh.txt
/usr/share/crypto-policies/FUTURE/opensshserver.txt
/usr/share/crypto-policies/FUTURE/openssl.txt
/usr/share/crypto-policies/FUTURE/opensslcnf.txt
/usr/share/crypto-policies/LEGACY
/usr/share/crypto-policies/LEGACY/bind.txt
/usr/share/crypto-policies/LEGACY/gnutls.txt
/usr/share/crypto-policies/LEGACY/java.txt
/usr/share/crypto-policies/LEGACY/krb5.txt
/usr/share/crypto-policies/LEGACY/libreswan.txt
/usr/share/crypto-policies/LEGACY/libssh.txt
/usr/share/crypto-policies/LEGACY/nss.txt
/usr/share/crypto-policies/LEGACY/openssh.txt
/usr/share/crypto-policies/LEGACY/opensshserver.txt
/usr/share/crypto-policies/LEGACY/openssl.txt
/usr/share/crypto-policies/LEGACY/opensslcnf.txt
/usr/share/crypto-policies/back-ends
/usr/share/crypto-policies/back-ends/DEFAULT
/usr/share/crypto-policies/back-ends/DEFAULT/bind.config
/usr/share/crypto-policies/back-ends/DEFAULT/gnutls.config
/usr/share/crypto-policies/back-ends/DEFAULT/java.config
/usr/share/crypto-policies/back-ends/DEFAULT/krb5.config
/usr/share/crypto-policies/back-ends/DEFAULT/libreswan.config
/usr/share/crypto-policies/back-ends/DEFAULT/libssh.config
/usr/share/crypto-policies/back-ends/DEFAULT/nss.config
/usr/share/crypto-policies/back-ends/DEFAULT/openssh.config
/usr/share/crypto-policies/back-ends/DEFAULT/opensshserver.config
/usr/share/crypto-policies/back-ends/DEFAULT/openssl.config
/usr/share/crypto-policies/back-ends/DEFAULT/opensslcnf.config
/usr/share/crypto-policies/back-ends/FIPS
/usr/share/crypto-policies/back-ends/FIPS/bind.config
/usr/share/crypto-policies/back-ends/FIPS/gnutls.config
/usr/share/crypto-policies/back-ends/FIPS/java.config
/usr/share/crypto-policies/back-ends/FIPS/krb5.config
/usr/share/crypto-policies/back-ends/FIPS/libreswan.config
/usr/share/crypto-policies/back-ends/FIPS/libssh.config
/usr/share/crypto-policies/back-ends/FIPS/nss.config
/usr/share/crypto-policies/back-ends/FIPS/openssh.config
/usr/share/crypto-policies/back-ends/FIPS/opensshserver.config
/usr/share/crypto-policies/back-ends/FIPS/openssl.config
/usr/share/crypto-policies/back-ends/FIPS/opensslcnf.config
/usr/share/crypto-policies/back-ends/FUTURE
/usr/share/crypto-policies/back-ends/FUTURE/bind.config
/usr/share/crypto-policies/back-ends/FUTURE/gnutls.config
/usr/share/crypto-policies/back-ends/FUTURE/java.config
/usr/share/crypto-policies/back-ends/FUTURE/krb5.config
/usr/share/crypto-policies/back-ends/FUTURE/libreswan.config
/usr/share/crypto-policies/back-ends/FUTURE/libssh.config
/usr/share/crypto-policies/back-ends/FUTURE/nss.config
/usr/share/crypto-policies/back-ends/FUTURE/openssh.config
/usr/share/crypto-policies/back-ends/FUTURE/opensshserver.config
/usr/share/crypto-policies/back-ends/FUTURE/openssl.config
/usr/share/crypto-policies/back-ends/FUTURE/opensslcnf.config
/usr/share/crypto-policies/back-ends/LEGACY
/usr/share/crypto-policies/back-ends/LEGACY/bind.config
/usr/share/crypto-policies/back-ends/LEGACY/gnutls.config
/usr/share/crypto-policies/back-ends/LEGACY/java.config
/usr/share/crypto-policies/back-ends/LEGACY/krb5.config
/usr/share/crypto-policies/back-ends/LEGACY/libreswan.config
/usr/share/crypto-policies/back-ends/LEGACY/libssh.config
/usr/share/crypto-policies/back-ends/LEGACY/nss.config
/usr/share/crypto-policies/back-ends/LEGACY/openssh.config
/usr/share/crypto-policies/back-ends/LEGACY/opensshserver.config
/usr/share/crypto-policies/back-ends/LEGACY/openssl.config
/usr/share/crypto-policies/back-ends/LEGACY/opensslcnf.config
/usr/share/crypto-policies/default-config
/usr/share/crypto-policies/policies
/usr/share/crypto-policies/policies/DEFAULT.pol
/usr/share/crypto-policies/policies/EMPTY.pol
/usr/share/crypto-policies/policies/FIPS.pol
/usr/share/crypto-policies/policies/FUTURE.pol
/usr/share/crypto-policies/policies/LEGACY.pol
/usr/share/crypto-policies/policies/modules
/usr/share/crypto-policies/policies/modules/AD-SUPPORT.pmod
/usr/share/crypto-policies/policies/modules/ECDHE-ONLY.pmod
/usr/share/crypto-policies/policies/modules/NO-CAMELLIA.pmod
/usr/share/crypto-policies/policies/modules/NO-SHA1.pmod
/usr/share/crypto-policies/policies/modules/OSPP.pmod
/usr/share/crypto-policies/reload-cmds.sh
/usr/share/licenses/crypto-policies
/usr/share/licenses/crypto-policies/COPYING.LESSER
/usr/share/man/man7/crypto-policies.7.gz

References

[crypto-policies website](https://gitlab.com/redhat-crypto/fedora-crypto-policies https://gitlab.com/redhat-crypto/fedora-crypto-policies)

Summary

In this tutorial we learn how to install crypto-policies on CentOS 8 using yum and dnf.