Security cloth design and assembly

• US 6,982,642 B1
• Filed: 11/20/2000
• Issued: 01/03/2006
• Est. Priority Date: 11/20/2000
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Farquhar, Donald S., Cesana, Mario L., Taddei, Martino
• Primary Examiner(s): Rimell, Sam
• Assistant Examiner(s): Betit, Jacob F.
• Application Number:
  US09/717,698
• Time in Patent Office: 1,870 Days
• Field of Search: 380/44, 380/23, 380/4, 380/52, 380/30, 380/3, 340/550, 340/540, 340/541, 428/68, 428/915, 428/76, 428/121, 320/107, 713/200, 713/194
• US Class Current: 340/550
• CPC Class Codes: G06F 1/1628 Carrying enclosures containing additional elements, e.g. case for a laptop and a printer
• CPC Class Codes: G06F 21/87 by means of encapsulation, e.g. for integrated circuits
• CPC Class Codes: Y10T 428/23 Sheet including cover or casing

Abstract

The present invention provides a security enclosure having an electronic assembly, such as a cryptographic processor card enclosed within an enclosure, surrounded by a tamper respondent wrap. The enclosure further includes a flexible extension cable which electrically connects the wrap and the assembly. The extension cable includes a plurality of interconnections at a first end to form an electrical connection with the assembly, and a plurality of bonding pads at a second end to form an electrical connection with a plurality of corresponding bonding pads of the wrap.

Claims

1. A security enclosure, comprising:

an electronic assembly;

an extension, having a first end inserted in the assembly, and a second end having at least one bonding pad thereon; and

a tamper respondent wrap at least partially surrounding the assembly, having at least one corresponding bonding pad, wherein the bonding pad of the extension is secured to the bonding pad of the wrap, wherein an entire first surface of the bonding pad of the extension is in direct mechanical contact with the extension at a contact surface portion of the extension, wherein an entire first surface of the bonding pad of the wrap is in direct mechanical contact with the wrap at a contact surface portion of the wrap, wherein the contact surface portion of the extension is aligned directly above the entire first surface of the bonding pad of the extension, the entire first surface of the bonding pad of the wrap, and the contact surface portion of the wrap, wherein the tamper respondent wrap comprises a plurality of layers, and wherein each layer of the wrap includes a plurality of electrically conductive lines or a plurality of electrically conductive ink traces.

2. The security enclosure of claim 1, wherein the first end of the extension comprises at least one interconnection which forms an electrical connection between the assembly and the extension.

3. The security enclosure of claim 2, wherein the at least one interconnection is electrically connected to the at least one bonding pad of the extension via a wire.

4. The security enclosure of claim 1, wherein each layer of the wrap comprises the ink traces, and wherein the wrap further includes a system of resistors connecting the ink traces within the wrap to the bonding pads of the wrap.

5. The security enclosure of claim 1, wherein the extension comprises a flexible cable.

6. A security enclosure, comprising:

an electronic assembly; and

a tamper respondent wrap electrically connected to the assembly via an attachable extension, wherein the attachable extension comprises a flexible extension cable, and wherein an end of the flexible extension cable has a bonding pad thereon, wherein the tamper respondent wrap comprises a bonding pad formed on an end thereon, wherein the bonding pad of the extension cable is secured to the bonding pad of the wrap, wherein an entire first surface of the bonding pad of the extension cable is in direct mechanical contact with the extension cable at a contact surface portion of the extension cable, wherein an entire first surface of the bonding pad of the wrap is in direct mechanical contact with the wrap at a contact surface portion of the wrap, wherein the contact surface portion of the extension cable is aligned directly above the entire first surface of the bonding pad of the extension cable, the entire first surface of the bonding pad of the wrap, and the contact surface portion of the wrap.

7. The security enclosure of claim 6, wherein the extension further comprises a plurality of interconnections formed at a second end of the extension.

8. The security enclosure of claim 6, wherein each layer of the wrap comprises, within said each layer of the wrap, ink traces, and wherein a system of resistors electrically connects the bonding pads of the wrap to the ink traces of the wrap.