20060303a

1 files changed, 31 insertions, 0 deletions

diff --git a/libsec/port/desmodes.c b/libsec/port/desmodes.c
new file mode 100644
index 00000000..da6d9841
--- /dev/null
+++ b/libsec/port/desmodes.c
@@ -0,0 +1,31 @@
+#include "os.h"
+#include <libsec.h>
+
+/*
+ *  these routines use the 64bit format for
+ *  DES keys.
+ */
+
+void
+setupDESstate(DESstate *s, uchar key[8], uchar *ivec)
+{
+	memset(s, 0, sizeof(*s));
+	memmove(s->key, key, sizeof(s->key));
+	des_key_setup(key, s->expanded);
+	if(ivec)
+		memmove(s->ivec, ivec, 8);
+	s->setup = 0xdeadbeef;
+}
+
+void
+setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec)
+{
+	memset(s, 0, sizeof(*s));
+	memmove(s->key, key, sizeof(s->key));
+	des_key_setup(key[0], s->expanded[0]);
+	des_key_setup(key[1], s->expanded[1]);
+	des_key_setup(key[2], s->expanded[2]);
+	if(ivec)
+		memmove(s->ivec, ivec, 8);
+	s->setup = 0xdeadbeef;
+}