Cryptography - Storage of key material

Key

Key and key pair file format

• Distinguished Encoding Rules (DER) is the binary ASN.1 encoding of the data.
• Privacy-Enhanced Mail (PEM) (OpenSsh key format) (openssh) is the base64 encoded version of the DER formated data with additional header and footer lines to be transported via e.g. E-mail
• Key - ppk key format (putty)

Key Store

A file that contains key material (key or/and certificate) is called a keystore

Format:

• Cryptography - JKS (Java Keystore)
• Cryptography - PKCS (Public Key Cryptography Standards) - Public Key Cryptography Standards published by RSA Laboratories (pkcs12)
• Privacy-Enhanced Mail (PEM) (OpenSsh key format)

Certificate

• Cryptography - CER file format (Certificate)