<s>
In	O
computing	O
,	O
a	O
file	B-General_Concept
signature	I-General_Concept
is	O
data	O
used	O
to	O
identify	O
or	O
verify	O
the	O
contents	O
of	O
a	O
file	O
.	O
</s>
<s>
File	B-Algorithm
checksum	I-Algorithm
or	O
more	O
generally	O
the	O
result	O
of	O
a	O
hash	B-Error_Name
function	I-Error_Name
over	O
the	O
file	O
contents	O
:	O
data	O
used	O
to	O
verify	O
the	O
integrity	O
of	O
the	O
file	O
contents	O
,	O
generally	O
against	O
transmission	O
errors	O
or	O
malicious	O
attacks	O
.	O
</s>
