FFDHE: add NamedGroups method for getting a list of supported named groups.

Also updates TestFFDHE to exercise the new method (and, in doing so,
refactors the tests a bit).

The core check logic from exercise() is moved into a tryFFDHELookupByName
function, which is now used by both the exercise() test, as well as the
namedGroupsMethod() test that is added by this commit.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/FFDHE.cpp b/src/FFDHE.cpp
index 15f91b13c..eeb726cfc 100644
--- a/src/FFDHE.cpp
+++ b/src/FFDHE.cpp
@@ -8,6 +8,16 @@
 #include "FFDHE.h"
 #include "FFDHETable.h"
 
+QStringList FFDHE::NamedGroups() {
+	QStringList ng;
+	ng << QLatin1String("ffdhe2048");
+	ng << QLatin1String("ffdhe3072");
+	ng << QLatin1String("ffdhe4096");
+	ng << QLatin1String("ffdhe6144");
+	ng << QLatin1String("ffdhe8192");
+	return ng;
+}
+
 QByteArray FFDHE::PEMForNamedGroup(QString name) {
 	name = name.toLower();