This is the command ldns-key2ds that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
ldns-key2ds - transform a DNSKEY RR to a DS RR
ldns-key2ds is used to transform a public DNSKEY RR to a DS RR. When run it will read
file with a DNSKEY RR in it and it will create a .ds file with the DS RR in it.
It prints out the basename for this file (K<name>+<alg>+<id>).
By default it takes a pick of algorithm similar to the key algorithm, SHA1 for RSASHA1,
and so on.
-f Ignore SEP flag (i.e. make DS records for any key)
-n Write the result DS Resource Record to stdout instead of a file
-1 Use SHA1 as the hash function.
-2 Use SHA256 as the hash function
Use ldns-key2ds online using onworks.net services