Import sources from 2011-03-30 iso image

1 files changed, 47 insertions, 0 deletions

diff --git a/sys/src/cmd/ssh/cipher3des.c b/sys/src/cmd/ssh/cipher3des.c
new file mode 100755
index 000000000..b7b2b641c
--- /dev/null
+++ b/sys/src/cmd/ssh/cipher3des.c
@@ -0,0 +1,47 @@
+#include "ssh.h"
+
+struct CipherState
+{
+	DESstate enc3des[3];
+	DESstate dec3des[3];
+};
+
+static CipherState*
+init3des(Conn *c, int)
+{
+	int i;
+	CipherState *cs;
+
+	cs = emalloc(sizeof(CipherState));
+	for(i=0; i<3; i++){
+		setupDESstate(&cs->enc3des[i], c->sesskey+8*i, nil);
+		setupDESstate(&cs->dec3des[i], c->sesskey+8*i, nil);
+	}
+	return cs;
+}
+
+static void
+encrypt3des(CipherState *cs, uchar *buf, int nbuf)
+{
+	desCBCencrypt(buf, nbuf, &cs->enc3des[0]);
+	desCBCdecrypt(buf, nbuf, &cs->enc3des[1]);
+	desCBCencrypt(buf, nbuf, &cs->enc3des[2]);
+}
+
+static void
+decrypt3des(CipherState *cs, uchar *buf, int nbuf)
+{
+	desCBCdecrypt(buf, nbuf, &cs->dec3des[2]);
+	desCBCencrypt(buf, nbuf, &cs->dec3des[1]);
+	desCBCdecrypt(buf, nbuf, &cs->dec3des[0]);
+}
+
+Cipher cipher3des =
+{
+	SSH_CIPHER_3DES,
+	"3des",
+	init3des,
+	encrypt3des,
+	decrypt3des,
+};
+