<s>
ISO/IEC	B-General_Concept
10116	I-General_Concept
Information	O
technology	O
—	O
Security	O
techniques	O
—	O
Modes	B-Algorithm
of	I-Algorithm
operation	I-Algorithm
for	O
an	O
n-bit	O
block	O
cipher	O
is	O
an	O
international	O
standard	O
that	O
specifies	O
modes	B-Algorithm
of	I-Algorithm
operation	I-Algorithm
for	O
block	O
ciphers	O
of	O
any	O
length	O
.	O
</s>
<s>
The	O
standard	O
notes	O
that	O
some	O
modes	O
require	O
padding	B-Algorithm
,	O
but	O
states	O
that	O
"	O
Padding	B-Algorithm
techniques	O
...	O
are	O
not	O
within	O
the	O
scope	O
of	O
this	O
International	O
Standard.	O
"	O
</s>
