Perform second-stage derivation of a public key
To create the derived public key in VetKD, a two step derivation is performed. The first step
creates a key that is specific to the canister that is making VetKD requests to the
management canister, sometimes called canister master key. The second step incorporates the
"derivation context" value provided to the vetkd_public_key management canister interface.
If vetkd_public_key is invoked with an empty derivation context, it simply returns the
canister master key. Then the second derivation step can be done offline, using this
function. This is useful if you wish to derive multiple keys without having to interact with
the IC each time.
If context is empty, then this simply returns the underlying key. This matches the behavior
of vetkd_public_key
Return the bytestring encoding of the derived public key
Applications would not normally need to call this, unless they are using VetKD for creating a random beacon, in which case these bytes are used by anyone verifying the beacon.
StaticdeserializeRead a DerivedPublicKey from the bytestring encoding
Normally the bytes provided here will have been returned by
the vetkd_public_key management canister interface.
VetKD derived public key
An unencrypted VetKey is a BLS signature generated with a canister-specific key. This type represents such keys.