Encrypted Volume and File System v2.2 Administrator Guide (777846-001, April 2014)

recovery key A key pair that a user can use to change the owner of an EVS volume or encrypted file. A user
who has the private recovery key file can change the owner of an EVS volume or encrypted file.
In addition, the current owner of the EVS volume or encrypted file can change the ownership.
RSA (Rivest-Shamir-Adelman) A public/private key cryptosystem that is used for privacy (encryption)
and authentication (signatures). For encryption, system A can send data encrypted with system
B's public key. Only system B's private key can decrypt the data.
EVFS uses RSA cryptography to secure volume encryption keys. EVFS supports 1024-bit, 1536-bit,
and 2048-bit RSA keys.
symmetric key
cryptography
A cryptographic method that uses the same key (bit string) to encrypt and decrypt the data.
user keys The public/private key pairs that EVFS uses to securely store volume encryption keys or file
encryption keys. User keys can be used as owner keys, recovery keys, authorized user keys, or
group keys.
volume encryption
key
Symmetric key used by EVFS to encrypt volume data.
volume owner EVS volume owner.
184 Glossary