Add GEA3 & GEA4 ciphers
Corresponding test code include both official test vectors from the
specs and data from over-the-air tests.
This obsoletes libosmo-crypt-a53 as it was last missing piece
unimplemented in libosmogsm.
Change-Id: I939e4f6b91b4a7c591ef3761fe2d46ed1c2fb2d3
Related: OS#1582
diff --git a/src/gsm/gprs_gea.c b/src/gsm/gprs_gea.c
new file mode 100644
index 0000000..8ff1648
--- /dev/null
+++ b/src/gsm/gprs_gea.c
@@ -0,0 +1,48 @@
+/*
+ * gprs_gea.c
+ *
+ * GEA 3 & 4 plugin
+ *
+ * Copyright (C) 2016 by Sysmocom s.f.m.c. GmbH
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <osmocom/crypt/gprs_cipher.h>
+#include <osmocom/gsm/gea.h>
+
+#include <stdint.h>
+
+static struct gprs_cipher_impl gea3_impl = {
+ .algo = GPRS_ALGO_GEA3,
+ .name = "GEA3 (libosmogsm built-in)",
+ .priority = 100,
+ .run = &gea3,
+};
+
+static struct gprs_cipher_impl gea4_impl = {
+ .algo = GPRS_ALGO_GEA4,
+ .name = "GEA4 (libosmogsm built-in)",
+ .priority = 100,
+ .run = &gea4,
+};
+
+static __attribute__((constructor)) void on_dso_load_gea(void)
+{
+ gprs_cipher_register(&gea3_impl);
+ gprs_cipher_register(&gea4_impl);
+}