/** Wraps the input stream if it needs to be decrypted. */
InputStream decrypt(InputStream in) throws IOException {
if (mCrypto != null) {
try {
in = mCrypto.newDecryptingStream(0, in);
} catch (GeneralSecurityException e) {
throw new DatabaseException(e);
}
}
return in;
}
/** Wraps the output stream if it needs to be encrypted. */
OutputStream encrypt(OutputStream out) throws IOException {
if (mCrypto != null) {
try {
out = mCrypto.newEncryptingStream(0, out);
} catch (GeneralSecurityException e) {
throw new DatabaseException(e);
}
}
return out;
}