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US005995625A
Ulllted
States
Patent
[19]
[11]
Patent
Number:
5,995,625
Sudia
et
al.
[45]
Date
of
Patent:
Nov.
30,
1999
[54]
ELECTRONIC
CRYPTOGRAPHIC
PACKING
5,553,143
9/1996
5,555,303
9/1996
[75]
Inventors:
Frank
W.
Sudia,
Newton
Centre,
5,586,186
12/1996
Mass.;
Alan
Asay,
Salt
Lake
City,
577017343
12/1997
Utah;
Ernest
F.
Brickell,
Albuquerque,
5’708’709
1/1998
N.M6X.;
Richard
Ankney,
Chantilly,
FOREIGN
PATENT
DOCUMENTS
Va.;
Peter C.
Freund;
Marcel
M.
Yung,
both
of
New
York,
N_Y_;
David
O
715
242
6/1966
European
Pat.
Off.
.
W_
Kravitz,
Albuquerque,
N_MeX~
O
444
351
9/1991
European
Pat.
Off.
.
[73]
Assignee:
Certco,
LLC,
NeW
York,
NY.
OTHER
PUBLICATIONS
International
Search
Report,
dated
Aug.
7,
1998;
PCT/US98/
[21]
Appl.
No.:
08/822,732
04329.
[22]
Filedi
Mall
24,
1997 Primary
Examiner—Salvatore
Cangialosi
[51]
Int.
Cl?
......................................................
..
H04L
9/00
Attorney)
Agent)
0’
Firm—p?lsbury
Madison
8‘
Sum’
LLP
[52]
US.
Cl.
................
..
380/25;
380/4
[57]
ABSTRACT
[58]
Field
of
Search
......
..
380/4,
25
_ _ _ _
A
method
of
unwrapping
Wrapped
digital
data
that
is
unus
[56]
References
Cited
able
While
Wrapped,
includes
obtaining
an
acceptance
phrase
from
a user;
deriving
a
cryptographic
key
from
the
Us
PATENT
DOCUMENTS
acceptance
phrase;
and
unwrapping
the
package
of
digital
475287643
7/1985
Freeny’
Jr‘
'
data
using
the
derived
cryptographic
key.
The
acceptance
4
827 508
5/1989
Shear
........................................
..
380/4
phrase
15
a
Phrase
entered
by
a
user
In
response
to
lnforma'
4:941:175
7/199O
Enescu
et
a1_
_
tion
provided
to
the
user.
The
information
and
the
accep
4,953,209
8/1990
Ryder,
Sr.
et
al.
.....................
..
380/25
tanee
phrase
can
be
in
any
appropriate
language.
The
digital
4,977,594
12/1990
Shear
.................
..
380/4
data
includes,
alone
or
in
combination,
any
of:
softWare,
a
5,050,213
9/1991
Shear
........................................
..
380/4
Cryptographic
key,
an
Certi?cate,
an
authorizing
571387712
8/1992
Corbm
-
certi?cate, a
data
element
or
?eld
of
an
identifying
or
53433526
8/1994
Lassers
'
authoriZing
certi?cate, a
data
?le
representing
an
images,
5,343,527
8/1994
Moore
.......................................
..
380/4
data representing
text
numbers
audio
and
Video
5,390,297
2/1995
Barber
et
al.
.
’ ’ ’
'
5,400,403
3/1995
Fahn
et
al.
................................
..
380/4
5,509,074
4/1996
Choudhury
et
al.
....................
..
380/25
42
Claims,
20
Drawing
Sheets
License
Terms Words
of
Conceu‘ed
92
and
Conditions
Assent
Glyph
Values
(90
(
\\
DATA
WRAPPER
l
Glyph
V°lue=
\\
_
_
I
J
1
OAB737F2
Wrapped
Dlgli'Gl
Generqfe
Data
Content
Unwrap
r-'-_—--1
Key
L>S2_-_B_7_l
93
r-"""1
-
.X4=F2|
Function
|_____.1
L--""
(eg,Keyed
9959A:
Hush)
F--:--1
0:21am
94
Unwrapped
Digital
UID
Value
=32BB4C27l
clear)
Unique
ID
Value
=32BB4C27
Data
Content
Provider
Signature
(optional)
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