FileIntegrityManager | Android Developers [proxy]

public final class FileIntegrityManager
extends Object

This class provides access to file integrity related operations.

Summary

Public methods
`boolean`	`isApkVeritySupported()` Returns true if APK Verity is supported on the device.
`boolean`	`isAppSourceCertificateTrusted(X509Certificate certificate)` Returns whether the given certificate can be used to prove app's install source.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public methods

isApkVeritySupported

public boolean isApkVeritySupported ()

Returns true if APK Verity is supported on the device. When supported, an APK can be installed with a fs-verity signature (if verified with trusted App Source Certificate) for continuous on-access verification.

Returns
`boolean`

isAppSourceCertificateTrusted

public boolean isAppSourceCertificateTrusted (X509Certificate certificate)

Returns whether the given certificate can be used to prove app's install source. Always return false if the feature is not supported.

A store can use this API to decide if a signature file needs to be downloaded. Also, if a store has shipped different certificates before (e.g. with stronger and weaker key), it can also use this API to download the best signature on the running device.
Requires Manifest.permission.INSTALL_PACKAGES or Manifest.permission.REQUEST_INSTALL_PACKAGES

Parameters
`certificate`	`X509Certificate`: This value cannot be `null`.

Returns
`boolean`	whether the certificate is trusted in the system

Throws
`CertificateEncodingException`