StrongBox

In StrongBox when the device makes the key there, else the TEE. Any StrongBox failure turns to the TEE, with a warning logged (tag OID4VCWallet); securityLevel says where a key is. Creating a key tries at most every storage, purpose set and digest set (8 generations for a holder key that agrees keys), each retried up to 3 times where Keystore reports its failure transient.

Only in StrongBox: creating a key fails on a device without it.

Always the TEE: faster, where StrongBox's speed matters more.

Returns a representation of an immutable list of all enum entries, in the order they're declared.

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Returns an array containing the constants of this enum type, in the order they're declared.