66 lines
1.6 KiB
Python
66 lines
1.6 KiB
Python
#!/usr/bin/python
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# This example shows how to sign a given zone file with private key
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import ldns
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import sys, os, time
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#private key TAG which identifies the private key
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#use ldns-keygen.py in order to obtain private key
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keytag = 30761
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# Read zone file
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#-------------------------------------------------------------
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zone = ldns.ldns_zone.new_frm_fp(open("zone.txt","r"), None, 0, ldns.LDNS_RR_CLASS_IN)
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soa = zone.soa()
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origin = soa.owner()
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# Prepare keys
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#-------------------------------------------------------------
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#Read private key from file
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keyfile = open("key-%s-%d.private" % (origin, keytag), "r");
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key = ldns.ldns_key.new_frm_fp(keyfile)
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#Read public key from file
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pubfname = "key-%s-%d.key" % (origin, keytag)
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pubkey = None
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if os.path.isfile(pubfname):
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pubkeyfile = open(pubfname, "r");
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pubkey,_,_,_ = ldns.ldns_rr.new_frm_fp(pubkeyfile)
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if not pubkey:
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#Create new public key
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pubkey = key.key_to_rr()
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#Set key expiration
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key.set_expiration(int(time.time()) + 365*60*60*24) #365 days
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#Set key owner (important step)
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key.set_pubkey_owner(origin)
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#Insert DNSKEY RR
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zone.push_rr(pubkey)
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# Sign zone
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#-------------------------------------------------------------
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#Create keylist and push private key
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keys = ldns.ldns_key_list()
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keys.push_key(key)
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#Add SOA
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signed_zone = ldns.ldns_dnssec_zone()
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signed_zone.add_rr(soa)
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#Add RRs
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for rr in zone.rrs().rrs():
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print "RR:",str(rr),
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signed_zone.add_rr(rr)
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added_rrs = ldns.ldns_rr_list()
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status = signed_zone.sign(added_rrs, keys)
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if (status == ldns.LDNS_STATUS_OK):
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signed_zone.print_to_file(open("zone_signed.txt","w"))
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