diff -urN psi-0.10-test3/cutestuff/xmlsec/keyops.cpp psi-0.10-test3-pedrito/cutestuff/xmlsec/keyops.cpp
--- psi-0.10-test3/cutestuff/xmlsec/keyops.cpp	2005-08-21 19:44:29.000000000 +0200
+++ psi-0.10-test3-pedrito/cutestuff/xmlsec/keyops.cpp	2005-11-18 08:28:48.000000000 +0100
@@ -6,6 +6,11 @@
 
 bool sym_encrypt(const QByteArray &data, const Cipher::Key &key, const QByteArray &iv, QString *out)
 {
+	if (in.isEmpty()) {
+		*out = QString();
+		return true;
+	}
+
 	QByteArray encData = iv.copy();
 	bool ok;
 	QByteArray a = Cipher::encrypt(data, key, iv, true, &ok);
@@ -108,6 +113,11 @@
 
 bool sym_keywrap(const QByteArray &data, const Cipher::Key &key, QString *out)
 {
+	if (in.isEmpty()) {
+		*out = QString();
+		return true;
+	}
+
 	int x = key.type();
 	if(x == Cipher::TripleDES) {
 		QByteArray cks = calcCMS(data);