keyAgreement
open suspend override fun keyAgreement(alias: String, otherKey: EcPublicKey, unlockReason: Reason): SecureByteString
Performs Key Agreement.
Key agreement is only supported for EC keys.
If the key needs unlocking before use (for example user authentication in any shape or form) and keyUnlockData isn't set or doesn't contain what's needed, KeyLockedException is thrown.
Return
The shared secret.
Parameters
alias
the alias of the EC key to use.
otherKey
The public EC key from the other party
unlockReason
the reason for unlocking.
Throws
if there is no key with the given alias or the key wasn't created with a key agreement algorithm.
if the key needs unlocking.
if the key is no longer usable.