all: gcc fpe-encrypt.c -L /usr/local/lib -lcrypto -o fpe-encrypt gcc fpe-decrypt.c -L /usr/local/lib -lcrypto -o fpe-decrypt test: ./fpe-encrypt 0123456789012345 secretkey tweak001 ./fpe-decrypt 6492610187935136 secretkey tweak001 clean: rm -fr a.out rm -fr fpe-encrypt rm -fr fpe-decrypt