Vendor import of OpenSSH.

1 files changed, 97 insertions, 0 deletions

diff --git a/crypto/openssh/cipher.h b/crypto/openssh/cipher.h
new file mode 100644
index 0000000..2e06c98
--- /dev/null
+++ b/crypto/openssh/cipher.h
@@ -0,0 +1,97 @@
+/*
+ * 
+ * cipher.h
+ * 
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * 
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ * 
+ * Created: Wed Apr 19 16:50:42 1995 ylo
+ * 
+ */
+
+/* RCSID("$Id: cipher.h,v 1.10 1999/11/24 19:53:46 markus Exp $"); */
+
+#ifndef CIPHER_H
+#define CIPHER_H
+
+#include <ssl/des.h>
+#include <ssl/blowfish.h>
+
+/* Cipher types.  New types can be added, but old types should not be removed
+   for compatibility.  The maximum allowed value is 31. */
+#define SSH_CIPHER_NOT_SET	-1	/* None selected (invalid number). */
+#define SSH_CIPHER_NONE		0	/* no encryption */
+#define SSH_CIPHER_IDEA		1	/* IDEA CFB */
+#define SSH_CIPHER_DES		2	/* DES CBC */
+#define SSH_CIPHER_3DES		3	/* 3DES CBC */
+#define SSH_CIPHER_BROKEN_TSS	4	/* TRI's Simple Stream encryption CBC */
+#define SSH_CIPHER_BROKEN_RC4	5	/* Alleged RC4 */
+#define SSH_CIPHER_BLOWFISH	6
+
+typedef struct {
+	unsigned int type;
+	union {
+		struct {
+			des_key_schedule key1;
+			des_key_schedule key2;
+			des_cblock iv2;
+			des_key_schedule key3;
+			des_cblock iv3;
+		}       des3;
+		struct {
+			struct bf_key_st key;
+			unsigned char iv[8];
+		}       bf;
+	}       u;
+}       CipherContext;
+/*
+ * Returns a bit mask indicating which ciphers are supported by this
+ * implementation.  The bit mask has the corresponding bit set of each
+ * supported cipher.
+ */
+unsigned int cipher_mask();
+
+/* Returns the name of the cipher. */
+const char *cipher_name(int cipher);
+
+/*
+ * Parses the name of the cipher.  Returns the number of the corresponding
+ * cipher, or -1 on error.
+ */
+int     cipher_number(const char *name);
+
+/*
+ * Selects the cipher to use and sets the key.  If for_encryption is true,
+ * the key is setup for encryption; otherwise it is setup for decryption.
+ */
+void 
+cipher_set_key(CipherContext * context, int cipher,
+    const unsigned char *key, int keylen, int for_encryption);
+
+/*
+ * Sets key for the cipher by computing the MD5 checksum of the passphrase,
+ * and using the resulting 16 bytes as the key.
+ */
+void 
+cipher_set_key_string(CipherContext * context, int cipher,
+    const char *passphrase, int for_encryption);
+
+/* Encrypts data using the cipher. */
+void 
+cipher_encrypt(CipherContext * context, unsigned char *dest,
+    const unsigned char *src, unsigned int len);
+
+/* Decrypts data using the cipher. */
+void 
+cipher_decrypt(CipherContext * context, unsigned char *dest,
+    const unsigned char *src, unsigned int len);
+
+/*
+ * If and CRC-32 attack is detected this function is called. Defaults to
+ * fatal, changed to packet_disconnect in sshd and ssh.
+ */
+extern void (*cipher_attack_detected) (const char *fmt, ...);
+
+#endif				/* CIPHER_H */