+int rsakey_encrypted(char *filename, char **comment);
+int rsakey_pubblob(char *filename, void **blob, int *bloblen);
+
+int saversakey(char *filename, struct RSAKey *key, char *passphrase);
+
+extern int base64_decode_atom(char *atom, unsigned char *out);
+extern int base64_lines(int datalen);
+extern void base64_encode_atom(unsigned char *data, int n, char *out);
+extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl);
+
+/* ssh2_load_userkey can return this as an error */
+extern struct ssh2_userkey ssh2_wrong_passphrase;
+#define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
+
+int ssh2_userkey_encrypted(char *filename, char **comment);
+struct ssh2_userkey *ssh2_load_userkey(char *filename, char *passphrase);
+char *ssh2_userkey_loadpub(char *filename, char **algorithm,
+ int *pub_blob_len);
+int ssh2_save_userkey(char *filename, struct ssh2_userkey *key,
+ char *passphrase);
+
+enum {
+ SSH_KEYTYPE_UNOPENABLE,
+ SSH_KEYTYPE_UNKNOWN,
+ SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,
+ SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM
+};
+int key_type(char *filename);
+char *key_type_to_str(int type);
+
+int import_possible(int type);
+int import_target_type(int type);
+int import_encrypted(char *filename, int type, char **comment);
+int import_ssh1(char *filename, int type, struct RSAKey *key,char *passphrase);
+struct ssh2_userkey *import_ssh2(char *filename, int type, char *passphrase);
+int export_ssh1(char *filename, int type, struct RSAKey *key,char *passphrase);
+int export_ssh2(char *filename, int type,
+ struct ssh2_userkey *key, char *passphrase);
+
+void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
+void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
+void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
+ unsigned char *blk, int len);
+void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
+ unsigned char *blk, int len);
+void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,
+ int len);
+void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,
+ int len);
+
+/*
+ * For progress updates in the key generation utility.
+ */
+#define PROGFN_INITIALISE 1
+#define PROGFN_LIN_PHASE 2
+#define PROGFN_EXP_PHASE 3
+#define PROGFN_PHASE_EXTENT 4
+#define PROGFN_READY 5
+#define PROGFN_PROGRESS 6
+typedef void (*progfn_t) (void *param, int action, int phase, int progress);
+
+int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,
+ void *pfnparam);
+int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,
+ void *pfnparam);
+Bignum primegen(int bits, int modulus, int residue, Bignum factor,
+ int phase, progfn_t pfn, void *pfnparam);
+