AlphaX/qortal
1
0
Fork 0
forked from Qortal/qortal
Code Issues Pull Requests Projects Releases Wiki Activity

Use AES/CBC/PKCS5Padding for encryption, and fall back to just AES for legacy resource support.

Browse Source 
Should fix "ECB mode cannot use IV" error due to mode and padding not being stated.
This commit is contained in:
CalDescent 2022-01-15 20:14:32 +00:00
parent 1ddd468c1f
commit 1d77101253
2 changed files with 16 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/main/java/org/qortal/arbitrary/ArbitraryDataReader.java
View File

@ -391,13 +391,26 @@ public class ArbitraryDataReader {
}
private void decrypt() throws DataException {
try {
// First try with explicit parameters (CBC mode with PKCS5 padding)
this.decryptUsingAlgo("AES/CBC/PKCS5Padding");
} catch (DataException e) {
// Something went wrong, so fall back to default AES params (necessary for legacy resource support)
this.decryptUsingAlgo("AES");
// TODO: delete files and block this resource if privateDataEnabled is false and the second attempt fails too
}
}
private void decryptUsingAlgo(String algorithm) throws DataException {
// Decrypt if we have the secret key.
byte[] secret = this.secret58 != null ? Base58.decode(this.secret58) : null;
if (secret != null && secret.length == Transformer.AES256_LENGTH) {
try {
Path unencryptedPath = Paths.get(this.workingPath.toString(), "zipped.zip");
SecretKey aesKey = new SecretKeySpec(secret, 0, secret.length, "AES");
AES.decryptFile("AES", aesKey, this.filePath.toString(), unencryptedPath.toString());
SecretKey aesKey = new SecretKeySpec(secret, 0, secret.length, algorithm);
AES.decryptFile(algorithm, aesKey, this.filePath.toString(), unencryptedPath.toString());
// Replace filePath pointer with the encrypted file path
// Don't delete the original ArbitraryDataFile, as this is handled in the cleanup phase
@ -405,7 +418,6 @@ public class ArbitraryDataReader {
} catch (NoSuchAlgorithmException | InvalidAlgorithmParameterException | NoSuchPaddingException
| BadPaddingException | IllegalBlockSizeException | IOException | InvalidKeyException e) {
// TODO: delete files and block this resource if privateDataEnabled is false
throw new DataException(String.format("Unable to decrypt file at path %s: %s", this.filePath, e.getMessage()));
}
} else {

2
src/main/java/org/qortal/arbitrary/ArbitraryDataWriter.java
View File

@ -225,7 +225,7 @@ public class ArbitraryDataWriter {
// Encrypt the file with AES
LOGGER.info("Encrypting...");
this.aesKey = AES.generateKey(256);
AES.encryptFile("AES", this.aesKey, this.filePath.toString(), this.encryptedPath.toString());
AES.encryptFile("AES/CBC/PKCS5Padding", this.aesKey, this.filePath.toString(), this.encryptedPath.toString());
// Delete the input file
if (FilesystemUtils.pathInsideDataOrTempPath(this.filePath)) {