1. A bottom lifting baseloid handling package for holding a four-sided product, the package comprising:
a bottom member for enclosing a bottom portion of the product, the bottom member comprising a rear panel adjacent a side of the product and having a top edge and a baseloid flange extending downward from the top edge of the rear panel for accommodating a baseloid lift blade, side panels extending perpendicularly forward from the rear panel, and a front panel extending perpendicularly from the side panels;
wherein each bottom member side panel has a top edge extending diagonally downward from the top edge of the rear panel to the front panel.
2. The package of claim 1 wherein each side panel is trapezoidal.
3. The package of claim 1 wherein the bottom member further comprises a plurality of bottom flaps that extend under the product to form a package bottom.
4. The package of claim 3 wherein one bottom flap is joined to a lower edge of the rear panel, opposing bottom flaps are joined to lower edges of the side panels, and fourth bottom flap is joined to a lower edge of the front panel.
5. The package of claim 1 wherein the baseloid flange comprises an upper edge panel extending substantially horizontally from the rear panel, an outer panel extending vertically downward from the upper edge panel, a lower edge panel extending horizontally inward from the outer panel, and an inner panel extending vertically upward so that it is adjacent to the outer panel and interposed between the outer panel and the rear panel.
6. The package of claim 1 wherein the bottom member is formed from corrugated board.
7. The package of claim 1 wherein the bottom member is formed from solid fiberboard.
8. The package of claim 1 further comprising:
a top cap; and
corner posts extending vertically between the top cap and the bottom member and having upper ends fitted under the top cap and lower ends interposed between the product and the bottom member.
9. The package of claim 8 wherein the top cap, bottom member and corner posts form an enclosure having open sides that allow the packaged product to be viewed.
10. The package of claim 8 further comprising a transparent bag draped over the product.
11. The package of claim 8 further comprising a horizontal retaining band urging the baseloid flange toward the rear panel.
12. The package of claim 8 wherein the top cap comprises a center panel and front, rear and side panels extending downward from the periphery of the center panel.
13. A package for a large household appliance having a cabinet with a top surface, the package comprising:
a bottom member for enclosing a bottom portion of the appliance, the bottom member comprising an upwardly extending rear panel terminating in a top edge located below the top of the appliance cabinet; and
a baseloid flange extending downward from the rear panel top edge for accommodating a baseloid lift blade;
wherein the bottom member further comprises side panels, each side panel extending forward from the rear panel to a front edge and having a top edge that extends diagonally downward from the rear panel top edge to a front corner, thereby exposing part of the appliance, and a front panel extending between the side panel front edges.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of thwarting detection of a secret binary number in a cryptographic computational device by analysis of externally observable parameters, comprising:
conditionally performing a plurality of calculations in response to the bit values of said secret number;
multiplicatively accumulating the results of said plurality of calculations in a subtotal; and
performing dummy calculations in response to selected bit positions of said secret number that indicate calculations should not be performed, and not multiplicatively accumulating the results of the dummy calculations in said subtotal, said selected bit positions randomly distributed over a binary indicator equal in length to said secret number;
whereby said dummy calculations alter at least one externally observable parameter.
2. The method of claim 1 wherein conditionally performing a plurality of calculations in response to the bit values of said secret number comprises performing a calculation where said bit value is a one and not performing said calculation where said bit value is a zero.
3. The method of claim 2 wherein performing dummy calculations in response to selected bit positions of said secret number that indicate calculations should not be performed comprises performing said dummy calculations in response to said secret number bit position being a zero and a corresponding indicator bit position being a one.
4. The method of claim 3 wherein said indicator is fixed.
5. The method of claim 4 wherein said indicator is generated upon first commissioning said device into operation and internally stored such that it is never released outside said device.
6. The method of claim 1 further comprising generating said secret number upon first commissioning said device into operation and internally storing said secret number such that it is never released outside said device.
7. The method of claim 1 in which said externally observable parameters include variation in power supply current.
8. The method of claim 1 in which said externally observable parameters include variation in timing of outputting results of said calculations.
9. The method of claim 1 wherein conditionally performing a plurality of calculations and accumulating their results calculates the exponentiation of a long integer to the power of a large secret exponent.
10. The method of claim 9 in which calculating the exponentiation of a long integer to the power of a large secret exponent comprises selectively calculating successive squares of said long integer and multiplicatively accumulating said squares in response to the bit values of said secret exponent, and reducing said accumulated value modulo a given modulus.
11. A detection-proof computational device comprising:
an inputoutput interface;
a memory storing a secret binary number; and
a processor operatively connected to said inputoutput interface and to said memory and programmed for cryptographic computation using said secret binary number while thwarting detection of said secret binary number by analysis of externally observable parameters, the cryptographic computation comprising:
conditionally performing a plurality of calculations in response to the bit values of said secret number;
multiplicatively accumulating the results of said plurality of calculations in a subtotal; and
performing dummy calculations in response to selected bit positions of said secret number that indicate calculations should not be performed, and not multiplicatively accumulating the results of the dummy calculations in said subtotal, said selected bit positions randomly distributed over a binary indicator equal in length to said secret number;
whereby said dummy calculations alter at least one externally observable parameter.
12. The device of claim 11 in which in which said externally observable parameters include variation in power supply current.
13. The device of claim 11 in which said externally observable parameters include variation in timing of outputting results of said calculations.
14. The device of claim 11 wherein said secret cryptographic computations comprise exponentiating a long integer to the power of a large secret exponent.
15. The device of claim 14 wherein exponentiating a long integer to the power of a large secret exponent comprises selectively calculating successive squares of said long integer and multiplicatively accumulating said squares in response to the bit values of said secret exponent, and reducing said accumulated value modulo a given modulus.
16. A mobile terminal used in a mobile communications system comprising:
a transmitter and a receiver for communicating in the mobile communications system;
a controller controlling operation of the transmitter and the receiver; and
a secure device removably, operatively connectable to the controller and comprising:
an inputoutput interface;
a memory storing a secret binary number; and
a processor operatively connected to said inputoutput interface and to said memory and programmed for cryptographic computation using said secret binary number while thwarting detection of said secret binary number by analysis of externally observable parameters, the cryptographic computation comprising:
conditionally performing a plurality of calculations in response to the bit values of said secret number;
multiplicatively accumulating the results of said plurality of calculations in a subtotal; and
performing dummy calculations in response to selected bit positions of said secret number that indicate calculations should not be performed, and not multiplicatively accumulating the results of the dummy calculations in said subtotal, said selected bit positions randomly distributed over a binary indicator equal in length to said secret number;
whereby said dummy calculations alter at least one externally observable parameter.
17. The mobile terminal of claim 16 in which in which said externally observable parameters include variation in power supply current.
18. The mobile terminal of claim 16 in which said externally observable parameters include variation in timing of outputting results of said calculations.
19. The mobile terminal of claim 16 wherein said secret cryptographic computations comprise exponentiating a long integer to the power of a large secret exponent.
20. The mobile terminal of claim 19 wherein exponentiating a long integer to the power of a large secret exponent comprises selectively calculating successive squares of said long integer and multiplicatively accumulating said squares in response to the bit values of said secret exponent, and reducing said accumulated value modulo a given modulus.