X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=ssh.h;h=75aad70ba82beddc788da304ef1c4250c6d6b1de;hb=2eb952ca31aa13d1f6f429305fbb6f43a9a28c56;hp=139ea33f114f90d8128e58f7b4bd79cf5b2a2711;hpb=1df12e3915bb7713a3122cee27827072077b51f6;p=PuTTY.git

diff --git a/ssh.h b/ssh.h
index 139ea33f..75aad70b 100644
--- a/ssh.h
+++ b/ssh.h
@@ -24,6 +24,7 @@ void sshfwd_x11_is_local(struct ssh_channel *c);
 
 extern Socket ssh_connection_sharing_init(const char *host, int port,
                                           Conf *conf, Ssh ssh, void **state);
+int ssh_share_test_for_upstream(const char *host, int port, Conf *conf);
 void share_got_pkt_from_server(void *ctx, int type,
                                unsigned char *pkt, int pktlen);
 void share_activate(void *state, const char *server_verstring);
@@ -319,7 +320,19 @@ struct ssh2_cipher {
     void (*decrypt_length) (void *, unsigned char *blk, int len, unsigned long seq);
     const char *name;
     int blksize;
-    int keylen;
+    /* real_keybits is the number of bits of entropy genuinely used by
+     * the cipher scheme; it's used for deciding how big a
+     * Diffie-Hellman group is needed to exchange a key for the
+     * cipher. */
+    int real_keybits;
+    /* padded_keybytes is the number of bytes of key data expected as
+     * input to the setkey function; it's used for deciding how much
+     * data needs to be generated from the post-kex generation of key
+     * material. In a sensible cipher which uses all its key bytes for
+     * real work, this will just be real_keybits/8, but in DES-type
+     * ciphers which ignore one bit in each byte, it'll be slightly
+     * different. */
+    int padded_keybytes;
     unsigned int flags;
 #define SSH_CIPHER_IS_CBC	1
 #define SSH_CIPHER_SEPARATE_LENGTH      2
@@ -347,7 +360,7 @@ struct ssh_mac {
     void (*genresult) (void *, unsigned char *);
     int (*verresult) (void *, unsigned char const *);
     const char *name, *etm_name;
-    int len;
+    int len, keylen;
     const char *text_name;
 };