Topic: der

• Converting certificates between PEM, DER and PKCS#12 with openssl for cross-platform trust and keystores

  Trust stores and keystores expect different container formats: RHEL/Debian anchors want PEM .crt files, Windows and Java tooling often hand you or expect PKCS#12 (.pfx/.p12) or DER (.cer), and openssl pkcs12/x509 convert between them and split out the key.

  methodology · en · reviewed · knowledge as of 2026-09-24

Machine-readable: JSON