/usr/bin/xsec-c14n
/usr/bin/xsec-checksig
/usr/bin/xsec-cipher
/usr/bin/xsec-siginf
/usr/bin/xsec-templatesign
/usr/bin/xsec-txfmout
/usr/bin/xsec-xklient
/usr/bin/xsec-xtest
You may install this package on Debian with
apt-get
install xml-security-c-utils