Galaxy A11
val keyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)Galaxy A11
val keyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)Galaxy A11
// Custom Advanced Master Key
val advancedSpec = KeyGenParameterSpec.Builder(
"master_key",
KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT
).apply {
setBlockModes(KeyProperties.BLOCK_MODE_GCM)
setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
setKeySize(256)
setUserAuthenticationRequired(true)
setUserAuthenticationValidityDurationSeconds(15) // must be larger than 0
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
setUnlockedDeviceRequired(true)
setIsStrongBoxBacked(true)
}
}.build()
val advancedKeyAlias = MasterKeys.getOrCreate(advancedSpec)Galaxy A11
val secretFile = File(filesDir, "super_secret")
val encryptedFile = EncryptedFile.Builder(
secretFile,
applicationContext,
advancedKeyAlias,
FileEncryptionScheme.AES256_GCM_HKDF_4KB)
.setKeysetAlias("file_key") // optional
.setKeysetPrefName("secret_shared_prefs") // optional
.build()
encryptedFile.openFileOutput().use { outputStream ->
// Write data to your encrypted file
}
encryptedFile.openFileInput().use { inputStream ->
// Read data from your encrypted file
}Copyright © 2021 Codeinu
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