The .sig files are signature files generated by PGP(Pretty Good Privacy)
and are there to check if the binaries are correct and not manipulated.

Ralph Schmidt

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.3i

mQCNAzH3pyMAAAEEALRcUhILZTe5quYhufF2N8eVNaiJhmdvYA82qrplR6lwBUBw
xpsZG93HPZhCGhUZMqg4hpIxbJk93V2lVfi3M51lyyVUDCrTXvnfbVUuhjrL8QRK
t+Pij/q8HDa0VxXjudx8Kn3GMYbTMMMdLxfBrWKdLLMToXmM7XsdWOpeTepZAAUR
tCRSYWxwaCBTY2htaWR0IDxsYWlyZUBwb3BtYWlsLm93bC5kZT6JAJUDBRAx96cj
ex1Y6l5N6lkBAUUBA/9NWVqqyhCtjzU7vtWKSt2KUqrmcplk6iCdGW6vzZRyor2C
pcMs+DiB0DSHhQf3FkmZYApSGxXx46yTQyqmEkiHiEee6O+ThMerdT7XPfFuJXfX
rZMD6knBtoPz2zhAn1KOdZiXMc9DiiomOmkn1U+T0KbJmtXKHoyHnMEQD6mBAA==
=tOrm
-----END PGP PUBLIC KEY BLOCK-----