1 files changed, 46 insertions, 0 deletions
diff --git a/appl/cmd/ssh/cipherrc4.b b/appl/cmd/ssh/cipherrc4.b
new file mode 100644
index 00000000..f43f9c8d
--- /dev/null
+++ b/appl/cmd/ssh/cipherrc4.b
@@ -0,0 +1,46 @@
+implement Cipher;
+
+include "sys.m";
+
+include "ipints.m";
+	ipints: IPints;
+	IPint: import ipints;
+
+include "crypt.m";
+	crypt: Crypt;
+	RC4state: import crypt;
+
+include "sshio.m";
+
+Cipherstate: adt
+{
+	enc: ref RC4state;
+	dec: ref RC4state;
+};
+
+cs: ref Cipherstate;
+
+id(): int
+{
+	return SSH_CIPHER_RC4;
+}
+
+init(key: array of byte, isserver: int)
+{
+	ipints = load IPints IPints->PATH;
+	crypt = load Crypt Crypt->PATH;
+	if(isserver)
+		cs = ref Cipherstate(crypt->rc4setup(key[0:16]), crypt->rc4setup(key[16:32]));
+	else
+		cs = ref Cipherstate(crypt->rc4setup(key[16:32]), crypt->rc4setup(key[0:16]));
+}
+
+encrypt(buf: array of byte, nbuf: int)
+{
+	crypt->rc4(cs.enc, buf, nbuf);
+}
+
+decrypt(buf: array of byte, nbuf: int)
+{
+	crypt->rc4(cs.dec, buf, nbuf);
+}