<s>
In	O
cryptography	O
,	O
a	O
key	B-General_Concept
signature	I-General_Concept
is	O
the	O
result	O
of	O
a	O
third-party	O
applying	O
a	O
cryptographic	O
signature	O
to	O
a	O
representation	O
of	O
a	O
cryptographic	O
key	O
.	O
</s>
<s>
Some	O
derivative	O
of	O
the	O
public	B-Algorithm
key	I-Algorithm
fingerprint	I-Algorithm
may	O
be	O
used	O
,	O
i.e.	O
</s>
<s>
via	O
hash	B-Error_Name
functions	I-Error_Name
.	O
</s>
