憑證格式轉換器

在 PEM、DER、PKCS#7 與 PFX 格式間轉換

Usage Guide

Supported Conversions

  • Certificates: Convert X.509 certificates between PEM and DER
  • Private Keys: Convert RSA/ECC private keys (supports password-protected keys)
  • CSRs: Convert Certificate Signing Requests

OpenSSL Reference

# Certificate: PEM to DER

openssl x509 -in cert.pem -outform DER -out cert.der

# Certificate: DER to PEM

openssl x509 -in cert.der -inform DER -out cert.pem

# Private Key: PEM to DER

openssl pkcs8 -in key.pem -outform DER -out key.der -nocrypt