Android can't open encrypted folder

[kuggu]

Cause of error

Exception in thread "Thread-22" java.lang.IllegalStateException: Metadata is corrupt!
    at com.owncloud.android.utils.EncryptionUtilsV2.decryptFolderMetadataFile(EncryptionUtilsV2.kt:254)
    at com.owncloud.android.utils.EncryptionUtilsV2.parseAnyMetadata(EncryptionUtilsV2.kt:619)
    at com.owncloud.android.utils.EncryptionUtils.downloadFolderMetadata(EncryptionUtils.java:421)
    at com.owncloud.android.operations.RefreshFolderOperation.getDecryptedFolderMetadata(RefreshFolderOperation.java:649)
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:535)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:464)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:275)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1564)

App information

• ID: com.nextcloud.client
• Version: 330000190
• Build flavor: gplay

Device information

• Brand: google
• Device: tokay
• Model: Pixel 9
• Id: CP1A.260405.005
• Product: tokay

Firmware

• SDK: 36
• Release: 16
• Incremental: 15001963

⚠️ Before posting ⚠️

• This is a bug, not a question or an enhancement.
• I've searched for similar issues and didn't find a duplicate.
• I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

Add Nextcloud instance to Android app. Then try to open encrypted folder.

Expected behaviour

Opened encrypted folder.

Actual behaviour

Gives error.

Android version

Newest current Android.

Device brand and model

Google Pixel 9

Stock or custom OS?

Stock

Nextcloud android app version

Current

Nextcloud server version

Current

Using a reverse proxy?

I don't know

Android logs

No response

Server error logs

Additional information

No response

[alperozturk96]

@kuggu Hello

Was folder empty? And server version is v33?

[kuggu]

@kuggu Hello

Was folder empty? And server version is v33?

Hi @alperozturk96

Yes, the folder is empty and the server version is v33. In the browser the folder works. When I make an encrypted folder in de Android app itself, then it works fine. But not the other way around.

[Spitfireap]

Same issue here. Though in a recent update of the app it shifted from Metadata is corrupt to an OpenSSL error.
Running NC 33.0.2 for the server side.

Cause of error

Exception in thread "Thread-46" javax.crypto.BadPaddingException: error:04000085:RSA routines:OPENSSL_internal:OAEP_DECODING_ERROR
    at org.conscrypt.NativeCrypto.EVP_PKEY_decrypt(Native Method)
    at org.conscrypt.OpenSSLCipherRSA$OAEP.doCryptoOperation(OpenSSLCipherRSA.java:594)
    at org.conscrypt.OpenSSLCipherRSA.engineDoFinal(OpenSSLCipherRSA.java:312)
    at javax.crypto.Cipher.doFinal(Cipher.java:2074)
    at com.owncloud.android.utils.EncryptionUtils.decryptStringAsymmetricV2(EncryptionUtils.java:726)
    at com.owncloud.android.utils.EncryptionUtilsV2.decryptMetadataKey(EncryptionUtilsV2.kt:412)
    at com.owncloud.android.utils.EncryptionUtilsV2.decryptFolderMetadataFile(EncryptionUtilsV2.kt:214)
    at com.owncloud.android.utils.EncryptionUtilsV2.parseAnyMetadata(EncryptionUtilsV2.kt:619)
    at com.owncloud.android.utils.EncryptionUtils.downloadFolderMetadata(EncryptionUtils.java:421)
    at com.owncloud.android.operations.RefreshFolderOperation.getDecryptedFolderMetadata(RefreshFolderOperation.java:649)
    at com.owncloud.android.operations.RefreshFolderOperation.synchronizeData(RefreshFolderOperation.java:535)
    at com.owncloud.android.operations.RefreshFolderOperation.fetchAndSyncRemoteFolder(RefreshFolderOperation.java:464)
    at com.owncloud.android.operations.RefreshFolderOperation.run(RefreshFolderOperation.java:275)
    at com.owncloud.android.lib.common.operations.RemoteOperation.run(RemoteOperation.java:387)
    at java.lang.Thread.run(Thread.java:1564)

App information

• ID: com.nextcloud.client
• Version: 330010090
• Build flavor: generic

Device information

• Brand: samsung
• Device: dm1q
• Model: SM-S911B
• Id: BP2A.250605.031.A3
• Product: dm1qxeea

Firmware

• SDK: 36
• Release: 16
• Incremental: S911BXXS9EZCI