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To sign some data the caller should use the command
SETDATA hexstring
to tell scdaemon
about the data to be signed. The data must be given in
hex notation. The actual signing is done using the command
PKSIGN keyid
where keyid is the hexified ID of the key to be used. The key id
may have been retrieved using the command LEARN
. If another
hash algorithm than SHA-1 is used, that algorithm may be given like:
PKSIGN --hash=algoname keyid
With algoname are one of sha1
, rmd160
or md5
.