// Android Biometric Binding
val authSession = BioAuth.Builder()
.setHardwareSecurityLevel(SECURE_ELEMENT)
.setAllowedAuthenticators(BIOMETRIC_STRONG)
.setCryptoObject(CryptoObject(MPCOperation.SHARD_GEN))
.build()
authSession.execute { crypto ->
val shard = MPCShard.generate(
masterKey = enclaveKey,
bioFactor = crypto.biometricStamp
)
SafeStorage.writeShard(shard)
}
2. On-Device Agent Training
// Federated Learning Update
#[mobile_federated]
async fn update_agent_model(
gradients: EncryptedTensor,
proof: TrainingProof
) -> Result<ModelDelta> {
let verified = zk_verify!(proof, gradients);
let delta = secure_aggregate!(gradients);
Ok(delta)
}