Upgrade OpenSSL to latest in CentOS 7 Prepare yum group install 'Development Tools' && yum install perl-core libtemplate-perl zlib-devel Download and extract > wget https://github.com/openssl/openssl/archive/OpenSSL_1_1_1g.tar.gz > tar -xvzf OpenSSL_1_1_1g.tar.gz > cd OpenSSL_1_1_1g Configure and compile OpenSSL > ./config --prefix=/usr/local/openssl --openssldir=/usr/local/openssl shared zlib > make > make test > make install Replace old version > cp /usr/local/openssl/lib/libcrypto.so.1.1 /usr/lib64/ > cp /usr/local/openssl/lib/libssl.so.1.1 /usr/lib64/ > cp -f /usr/local/openssl/bin/openssl /usr/bin/ Test new version > openssl version OpenSSL 1.1.1g 21 Apr 2020 > openssl genrsa -out ca-key.pem Generating RSA private key, 2048 bit long modulus (2 primes) .......................+++++ ..................................................................+++++ e is 65537 (0x010001)
