# Add to your shell profile export PATH="/opt/openssl-3.3.0/bin:$PATH" export LD_LIBRARY_PATH="/opt/openssl-3.3.0/lib:$LD_LIBRARY_PATH" # Linux # OR for macOS: export DYLD_LIBRARY_PATH="/opt/openssl-3.3.0/lib:$DYLD_LIBRARY_PATH" export PKG_CONFIG_PATH="/opt/openssl-3.3.0/lib/pkgconfig:$PKG_CONFIG_PATH" Verify /opt/openssl-3.3.0/bin/openssl version Part 6: Post-Installation Verification After any installation method, you should verify the installation is functional and secure. 6.1 Basic Version Check openssl version -a This shows version, build date, compiler flags, and directory paths. Pay attention to OPENSSLDIR – it tells you where openssl.cnf is located. 6.2 Test Cryptographic Operations # Generate a random key openssl rand -hex 32 Calculate SHA-256 of a file echo "test" > file.txt openssl dgst -sha256 file.txt Test TLS connection to a remote server openssl s_client -connect google.com:443 -servername google.com

The test suite runs hundreds of cryptographic validation tests. A failure may indicate a compiler issue or a platform bug. Do not proceed to installation if tests fail unless you understand the cause. # This installs to the prefix you specified sudo make install Step 5: Use the Custom Installation To use this custom-compiled version:

sudo pacman -S openssl Alpine uses a musl libc instead of glibc. OpenSSL is installed by default in many images, but for development:

Use pkg-config or explicitly set CFLAGS and LDFLAGS :

openssl version For automation and easier updates: