GPG

Grade 1 Security practice requirements:

Software Keys Must be at least 4096 bits minimum RSA.
Software Private Keys Must be stored on an encrypted drive that is not easy to remove from the system.
Software Private Keys must not be stored on Servers or Cloud Storage.
Software Keys must not be installed on unknown or untrusted devices.
Hardware and Software Key theft or loss must be reported ASAP in order to ensure critical removal of keys from servers and services.

Grade 2 Security practice requirements:

All of Grade 1’s security practices
Hardware Smartcards with at least 4096 bits minimum RSA encryption ensure maximum physical security of encryption keys.
PIN Codes must be at least 8 characters.
Your PIN cannot contain your Bank PIN, Birthday(Year, Month, Day).

Grade 3 Security practice requirements:

All of Grade 2’s security practices

Grade 4 Security practice requirements:

All of Grade 3’s security practices

Grade 5 Security practice requirements:

All of Grade 4’s security practices

SSH:

Grade 1 Security practice requirements:

Software Keys Must be at least 4096 bits.
Software Private Keys Must be stored on an encrypted drive that is not easy to remove from the system.
Software Private Keys must not be stored on Servers or Cloud Storage.
Software Keys must not be installed on unknown or untrusted devices.
Hardware and Software Key theft or loss must be reported ASAP (within 24 hours. ) in order to ensure critical removal of keys from servers and services.

Grade 2 Security practice requirements:

All of Grade 1’s security practices
Hardware and Software Key theft or loss must be reported ASAP (within 24 hours. ) in order to ensure critical removal of keys from servers and services.
PIN Codes must be at least 22 characters (applicable to software SSH Keys only).
Your PIN cannot contain your Bank PIN, Birthday(Year, Month, Day).

Grade 3 Security practice requirements:

All of Grade 5’s security practices

Grade 4 Security practice requirements:

All of Grade 3’s security practices

Grade 5 Security practice requirements:

All of Grade 4’s security practices

TLS

Grade 1 Security practice requirements:

All TLS private Keys Must be at least 4096 bits.

Grade 2 Security practice requirements:

All of Grade 1’s security practices
Hardware Smartcards with at least 4096 bit encryption ensure maximum physical security of encryption keys.

Grade 3 Security practice requirements:

All of Grade 5’s security practices

Grade 4 Security practice requirements:

All of Grade 3’s security practices

Grade 5 Security practice requirements:

All of Grade 4’s security practices

LUKS (Full Disk Encryption)

Grade 1 Security practice requirements:

Grade 2 Security practice requirements:

All of Grade 1’s security practices

Grade 3 Security practice requirements:

All of Grade 2’s security practices

Grade 4 Security practice requirements:

All of Grade 3’s security practices

Grade 5 Security practice requirements:

All of Grade 4’s security practices