How To Install openssl on CentOS 8
openssl is Utilities from the general purpose cryptography library with TLS implementation
Introduction
In this tutorial we learn how to install openssl on CentOS 8.
What is openssl
The OpenSSL toolkit provides support for secure communications between machines. OpenSSL includes a certificate management tool and shared libraries which provide various cryptographic algorithms and protocols.
We can use yum or dnf to install openssl on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install openssl.
Install openssl 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 openssl using dnf by running the following command:
sudo dnf -y install openssl
Install openssl 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 openssl using yum by running the following command:
sudo yum -y install openssl
How To Uninstall openssl on CentOS 8
To uninstall only the openssl package we can use the following command:
sudo dnf remove openssl
openssl Package Contents on CentOS 8
/usr/bin/make-dummy-cert
/usr/bin/openssl
/usr/bin/renew-dummy-cert
/usr/lib/.build-id
/usr/lib/.build-id/c9
/usr/lib/.build-id/c9/c96598c28e85b2fad47722846599556f2a203c
/usr/share/doc/openssl
/usr/share/doc/openssl/FAQ
/usr/share/doc/openssl/Makefile.certificate
/usr/share/doc/openssl/NEWS
/usr/share/doc/openssl/README
/usr/share/doc/openssl/README.FIPS
/usr/share/licenses/openssl
/usr/share/licenses/openssl/LICENSE
/usr/share/man/man1/asn1parse.1ssl.gz
/usr/share/man/man1/ca.1ssl.gz
/usr/share/man/man1/ciphers.1ssl.gz
/usr/share/man/man1/cms.1ssl.gz
/usr/share/man/man1/crl.1ssl.gz
/usr/share/man/man1/crl2pkcs7.1ssl.gz
/usr/share/man/man1/dgst.1ssl.gz
/usr/share/man/man1/dhparam.1ssl.gz
/usr/share/man/man1/dsa.1ssl.gz
/usr/share/man/man1/dsaparam.1ssl.gz
/usr/share/man/man1/ec.1ssl.gz
/usr/share/man/man1/ecparam.1ssl.gz
/usr/share/man/man1/enc.1ssl.gz
/usr/share/man/man1/engine.1ssl.gz
/usr/share/man/man1/errstr.1ssl.gz
/usr/share/man/man1/gendsa.1ssl.gz
/usr/share/man/man1/genpkey.1ssl.gz
/usr/share/man/man1/genrsa.1ssl.gz
/usr/share/man/man1/list.1ssl.gz
/usr/share/man/man1/nseq.1ssl.gz
/usr/share/man/man1/ocsp.1ssl.gz
/usr/share/man/man1/openssl-asn1parse.1ssl.gz
/usr/share/man/man1/openssl-c_rehash.1ssl.gz
/usr/share/man/man1/openssl-ca.1ssl.gz
/usr/share/man/man1/openssl-ciphers.1ssl.gz
/usr/share/man/man1/openssl-cms.1ssl.gz
/usr/share/man/man1/openssl-crl.1ssl.gz
/usr/share/man/man1/openssl-crl2pkcs7.1ssl.gz
/usr/share/man/man1/openssl-dgst.1ssl.gz
/usr/share/man/man1/openssl-dhparam.1ssl.gz
/usr/share/man/man1/openssl-dsa.1ssl.gz
/usr/share/man/man1/openssl-dsaparam.1ssl.gz
/usr/share/man/man1/openssl-ec.1ssl.gz
/usr/share/man/man1/openssl-ecparam.1ssl.gz
/usr/share/man/man1/openssl-enc.1ssl.gz
/usr/share/man/man1/openssl-engine.1ssl.gz
/usr/share/man/man1/openssl-errstr.1ssl.gz
/usr/share/man/man1/openssl-gendsa.1ssl.gz
/usr/share/man/man1/openssl-genpkey.1ssl.gz
/usr/share/man/man1/openssl-genrsa.1ssl.gz
/usr/share/man/man1/openssl-list.1ssl.gz
/usr/share/man/man1/openssl-nseq.1ssl.gz
/usr/share/man/man1/openssl-ocsp.1ssl.gz
/usr/share/man/man1/openssl-passwd.1ssl.gz
/usr/share/man/man1/openssl-pkcs12.1ssl.gz
/usr/share/man/man1/openssl-pkcs7.1ssl.gz
/usr/share/man/man1/openssl-pkcs8.1ssl.gz
/usr/share/man/man1/openssl-pkey.1ssl.gz
/usr/share/man/man1/openssl-pkeyparam.1ssl.gz
/usr/share/man/man1/openssl-pkeyutl.1ssl.gz
/usr/share/man/man1/openssl-prime.1ssl.gz
/usr/share/man/man1/openssl-rand.1ssl.gz
/usr/share/man/man1/openssl-rehash.1ssl.gz
/usr/share/man/man1/openssl-req.1ssl.gz
/usr/share/man/man1/openssl-rsa.1ssl.gz
/usr/share/man/man1/openssl-rsautl.1ssl.gz
/usr/share/man/man1/openssl-s_client.1ssl.gz
/usr/share/man/man1/openssl-s_server.1ssl.gz
/usr/share/man/man1/openssl-s_time.1ssl.gz
/usr/share/man/man1/openssl-sess_id.1ssl.gz
/usr/share/man/man1/openssl-smime.1ssl.gz
/usr/share/man/man1/openssl-speed.1ssl.gz
/usr/share/man/man1/openssl-spkac.1ssl.gz
/usr/share/man/man1/openssl-srp.1ssl.gz
/usr/share/man/man1/openssl-storeutl.1ssl.gz
/usr/share/man/man1/openssl-ts.1ssl.gz
/usr/share/man/man1/openssl-verify.1ssl.gz
/usr/share/man/man1/openssl-version.1ssl.gz
/usr/share/man/man1/openssl-x509.1ssl.gz
/usr/share/man/man1/openssl.1ssl.gz
/usr/share/man/man1/pkcs12.1ssl.gz
/usr/share/man/man1/pkcs7.1ssl.gz
/usr/share/man/man1/pkcs8.1ssl.gz
/usr/share/man/man1/pkey.1ssl.gz
/usr/share/man/man1/pkeyparam.1ssl.gz
/usr/share/man/man1/pkeyutl.1ssl.gz
/usr/share/man/man1/prime.1ssl.gz
/usr/share/man/man1/rehash.1ssl.gz
/usr/share/man/man1/req.1ssl.gz
/usr/share/man/man1/rsa.1ssl.gz
/usr/share/man/man1/rsautl.1ssl.gz
/usr/share/man/man1/s_client.1ssl.gz
/usr/share/man/man1/s_server.1ssl.gz
/usr/share/man/man1/s_time.1ssl.gz
/usr/share/man/man1/sess_id.1ssl.gz
/usr/share/man/man1/smime.1ssl.gz
/usr/share/man/man1/speed.1ssl.gz
/usr/share/man/man1/spkac.1ssl.gz
/usr/share/man/man1/srp.1ssl.gz
/usr/share/man/man1/sslpasswd.1ssl.gz
/usr/share/man/man1/sslrand.1ssl.gz
/usr/share/man/man1/storeutl.1ssl.gz
/usr/share/man/man1/ts.1ssl.gz
/usr/share/man/man1/verify.1ssl.gz
/usr/share/man/man1/version.1ssl.gz
/usr/share/man/man1/x509.1ssl.gz
/usr/share/man/man5/config.5ssl.gz
/usr/share/man/man5/openssl.cnf.5ssl.gz
/usr/share/man/man5/x509v3_config.5ssl.gz
/usr/share/man/man7/EVP_KDF_HKDF.7ssl.gz
/usr/share/man/man7/EVP_KDF_KB.7ssl.gz
/usr/share/man/man7/EVP_KDF_KRB5KDF.7ssl.gz
/usr/share/man/man7/EVP_KDF_PBKDF2.7ssl.gz
/usr/share/man/man7/EVP_KDF_SCRYPT.7ssl.gz
/usr/share/man/man7/EVP_KDF_SS.7ssl.gz
/usr/share/man/man7/EVP_KDF_SSHKDF.7ssl.gz
/usr/share/man/man7/EVP_KDF_TLS1_PRF.7ssl.gz
/usr/share/man/man7/Ed25519.7ssl.gz
/usr/share/man/man7/Ed448.7ssl.gz
/usr/share/man/man7/RAND.7ssl.gz
/usr/share/man/man7/RAND_DRBG.7ssl.gz
/usr/share/man/man7/RSA-PSS.7ssl.gz
/usr/share/man/man7/SM2.7ssl.gz
/usr/share/man/man7/X25519.7ssl.gz
/usr/share/man/man7/X448.7ssl.gz
/usr/share/man/man7/bio.7ssl.gz
/usr/share/man/man7/crypto.7ssl.gz
/usr/share/man/man7/ct.7ssl.gz
/usr/share/man/man7/des_modes.7ssl.gz
/usr/share/man/man7/evp.7ssl.gz
/usr/share/man/man7/ossl_store-file.7ssl.gz
/usr/share/man/man7/ossl_store.7ssl.gz
/usr/share/man/man7/passphrase-encoding.7ssl.gz
/usr/share/man/man7/proxy-certificates.7ssl.gz
/usr/share/man/man7/scrypt.7ssl.gz
/usr/share/man/man7/ssl.7ssl.gz
/usr/share/man/man7/x509.7ssl.gz
References
Summary
In this tutorial we learn how to install openssl on CentOS 8 using yum and dnf.