You asked about libcrypt also $ ldd /usr/bin/openssl /usr/bin/openssl: -lssl.14 => /usr/lib/libssl.so.14 -lcrypto.14 => /usr/lib/libcrypto.so.14 -lcrypt.1 => /usr/lib/libcrypt.so.1 -lc.12 => /usr/lib/libc.so.12