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Add Google Tink dependency, replacing androidx.security.crypto (#4405)

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* Add Google Tink dependency, replacing `androidx.security.crypto`

* Replace the `EncryptedFile` implementation too

* Extract constants, add some more docs
This commit is contained in:
Jorge Martin Espinosa 2025-03-17 10:04:21 +01:00 • committed by GitHub
parent fbdd7e07bf
commit 715d75c5c4
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10 changed files with 171 additions and 38 deletions
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30
libraries/androidutils/src/main/kotlin/io/element/android/libraries/androidutils/file/EncryptedFileFactory.kt
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@ -1,30 +0,0 @@
/*
* Copyright 2023, 2024 New Vector Ltd.
*
* SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
* Please see LICENSE files in the repository root for full details.
*/
package io.element.android.libraries.androidutils.file
import android.content.Context
import androidx.security.crypto.EncryptedFile
import androidx.security.crypto.MasterKey
import java.io.File
class EncryptedFileFactory(
private val context: Context,
) {
fun create(file: File): EncryptedFile {
// We need to use the same key for all the encrypted files.
val masterKey = MasterKey.Builder(context)
.setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
.build()
return EncryptedFile.Builder(
context,
file,
masterKey,
EncryptedFile.FileEncryptionScheme.AES256_GCM_HKDF_4KB
).build()
}
}