SNMP编程

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Unix_Linux

keytools.h：源码内容

							/*
 * keytools.h
 */
#ifndef _KEYTOOLS_H
#define _KEYTOOLS_H
#ifdef __cplusplus
extern          "C" {
#endif
#define USM_LENGTH_EXPANDED_PASSPHRASE	(1024 * 1024)   /* 1Meg. */
#define USM_LENGTH_KU_HASHBLOCK		64      /* In bytes. */
#define USM_LENGTH_P_MIN		8       /* In characters. */
    /*
     * Recommended practice given in <draft-ietf-snmpv3-usm-v2-02.txt>,
     * * Section 11.2 "Defining Users".  Move into cmdline app argument
     * * parsing, and out of the internal routine?  XXX
     */
    /*
     * Prototypes.h
     */
    int             generate_Ku(const oid * hashtype, u_int hashtype_len,
                                u_char * P, size_t pplen,
                                u_char * Ku, size_t * kulen);
    int             generate_kul(const oid * hashtype, u_int hashtype_len,
                                 u_char * engineID, size_t engineID_len,
                                 u_char * Ku, size_t ku_len,
                                 u_char * Kul, size_t * kul_len);
    int             encode_keychange(const oid * hashtype,
                                     u_int hashtype_len, u_char * oldkey,
                                     size_t oldkey_len, u_char * newkey,
                                     size_t newkey_len, u_char * kcstring,
                                     size_t * kcstring_len);
    int             decode_keychange(const oid * hashtype,
                                     u_int hashtype_len, u_char * oldkey,
                                     size_t oldkey_len, u_char * kcstring,
                                     size_t kcstring_len, u_char * newkey,
                                     size_t * newkey_len);
    /*
     * All functions devolve to the following block if we can't do cryptography
     */
#define	_KEYTOOLS_NOT_AVAILABLE			
{						
	return SNMPERR_KT_NOT_AVAILABLE;	
}
#ifdef __cplusplus
}
#endif
#endif                          /* _KEYTOOLS_H */

						