SoftwareOperation now throws ServiceSpecificException for all error paths
instead of raw Java exceptions, matching AIDL wire format. updateAad on
non-AEAD operations returns INVALID_TAG (-76) per AOSP operation.rs.
SoftwareOperationBinder methods are @Synchronized to match AOSP Mutex
semantics. GCM encrypt operations return the generated IV in
CreateOperationResponse.parameters.
AuthorizeCreate enforces PURPOSE validation, algorithm-purpose
compatibility (EC rejects ENCRYPT/DECRYPT, RSA rejects AGREE_KEY),
temporal constraints (ACTIVE_DATETIME, ORIGINATION_EXPIRE, USAGE_EXPIRE),
and CALLER_NONCE prohibition. GeneratedKeyInfo carries keyParams for
authorize_create enforcement on software createOperation.