<s>
The	O
pseudo-Hadamard	B-Algorithm
transform	I-Algorithm
is	O
a	O
reversible	O
transformation	O
of	O
a	O
bit	O
string	O
that	O
provides	O
cryptographic	O
diffusion	O
.	O
</s>
<s>
See	O
Hadamard	B-Algorithm
transform	I-Algorithm
.	O
</s>
<s>
The	O
above	O
equations	O
can	O
be	O
expressed	O
in	O
matrix	B-Architecture
algebra	I-Architecture
,	O
by	O
considering	O
a	O
and	O
b	O
as	O
two	O
elements	O
of	O
a	O
vector	O
,	O
and	O
the	O
transform	O
itself	O
as	O
multiplication	O
by	O
a	O
matrix	O
of	O
the	O
form	O
:	O
</s>
