<s>
Dynamic	B-Algorithm
Encryption	I-Algorithm
is	O
a	O
cryptographic	O
principle	O
that	O
enables	O
two	O
parties	O
to	O
change	O
the	O
encryption	O
algorithm	O
for	O
every	O
transaction	O
.	O
</s>
<s>
The	O
principle	O
of	O
Dynamic	B-Algorithm
Encryption	I-Algorithm
was	O
invented	O
by	O
Professor	O
Lars	O
R	O
.	O
Knudsen	O
at	O
the	O
Technical	O
University	O
of	O
Denmark	O
.	O
</s>
<s>
The	O
Dynamic	B-Algorithm
Encryption	I-Algorithm
principle	O
is	O
patented	O
.	O
</s>
<s>
Dynamic	B-Algorithm
Encryption	I-Algorithm
enhance	O
such	O
a	O
system	O
by	O
defining	O
a	O
set	O
of	O
ciphers	O
such	O
that	O
not	O
only	O
the	O
key	O
but	O
also	O
the	O
cipher	O
changes	O
on	O
every	O
new	O
data	O
transaction	O
.	O
</s>
<s>
In	O
order	O
to	O
establish	O
an	O
encrypted	O
channel	O
using	O
the	O
Dynamic	B-Algorithm
Encryption	I-Algorithm
principle	O
the	O
sender	O
and	O
receiver	O
first	O
negotiates	O
a	O
key	O
and	O
then	O
the	O
sender	O
picks	O
a	O
cipher	O
from	O
a	O
large	O
pool	O
of	O
ciphers	O
and	O
sends	O
that	O
together	O
with	O
the	O
encrypted	O
message	O
.	O
</s>
<s>
It	O
is	O
possible	O
to	O
construct	O
a	O
dynamic	B-Algorithm
encryption	I-Algorithm
system	O
,	O
from	O
known	O
ciphers	O
(	O
such	O
as	O
AES	B-Algorithm
,	O
DES	B-Algorithm
,	O
etc	O
.	O
</s>
<s>
Dynamic	B-Algorithm
Encryption	I-Algorithm
is	O
deployed	O
by	O
Dencrypt	O
Talk	O
,	O
a	O
voice	O
communication	O
and	O
live-chat	O
application	O
for	O
iOS	O
and	O
Android	O
.	O
</s>
<s>
Dencrypt	O
Talk	O
applies	O
the	O
principle	O
by	O
wrapping	O
standard	O
AES	B-Algorithm
encryption	I-Algorithm
with	O
a	O
dynamic	O
layer	O
which	O
is	O
changed	O
for	O
every	O
phone	O
call	O
between	O
two	O
clients	O
.	O
</s>
<s>
In	O
2017	O
,	O
Dencrypt	O
won	O
NATO	O
's	O
Defence	O
Innovation	O
Challenge	O
award	O
in	O
recognition	O
of	O
their	O
deployment	O
of	O
Dynamic	B-Algorithm
Encryption	I-Algorithm
for	O
voice	O
communication	O
.	O
</s>
