+struct ssh2_userkey {
+ const struct ssh_signkey *alg; /* the key algorithm */
+ void *data; /* the key data */
+ char *comment; /* the key comment */
+};
+
+extern const struct ssh_cipher ssh_3des;
+extern const struct ssh_cipher ssh_des;
+extern const struct ssh_cipher ssh_blowfish_ssh1;
+extern const struct ssh2_ciphers ssh2_3des;
+extern const struct ssh2_ciphers ssh2_des;
+extern const struct ssh2_ciphers ssh2_aes;
+extern const struct ssh2_ciphers ssh2_blowfish;
+extern const struct ssh_kex ssh_diffiehellman;
+extern const struct ssh_kex ssh_diffiehellman_gex;
+extern const struct ssh_signkey ssh_dss;
+extern const struct ssh_signkey ssh_rsa;
+extern const struct ssh_mac ssh_md5;
+extern const struct ssh_mac ssh_sha1;
+extern const struct ssh_mac ssh_sha1_buggy;
+
+/*
+ * PuTTY version number formatted as an SSH version string.
+ */
+extern char sshver[];
+
+/*
+ * Gross hack: pscp will try to start SFTP but fall back to scp1 if
+ * that fails. This variable is the means by which scp.c can reach
+ * into the SSH code and find out which one it got.
+ */
+extern int ssh_fallback_cmd(void *handle);
+