Key wrapping for common cryptographic architecture (CCA) key token

Patent metadata

Field	Value
Publication number	US-9252944-B2
Application number	US-201414221620-A
Country	US
Kind code	B2
Filing date	Mar 21, 2014
Priority date	Mar 21, 2014
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

Embodiments relate to wrapping of a common cryptographic architecture (CCA) key token. An aspect includes wrapping, by an exporting computer, the CCA key token using a key wrapping export function, the CCA key token comprising a CCA key data section and an unencrypted control vector. Another aspect includes splitting the control vector into a first control vector portion and a second control vector portion. Another aspect includes encrypting the CCA key data section and the first control vector portion using an key encrypting key (KEK) to generate a wrapped key block. Another aspect includes binding the second control vector portion to the wrapped key block to form an associated data section, wherein the associated data section is not encrypted, and wherein the wrapped key block and the associated data section comprise a wrapped key token.

First claim

What is claimed is:

1. A method for wrapping of a common cryptographic architecture (CCA) key token, the method comprising:
wrapping, by an exporting computer, the CCA key token using a key wrapping export function, the CCA key token comprising a CCA key data section and an unencrypted control vector, the wrapping comprising:
splitting the control vector into a first control vector portion and a second control vector portion;
encrypting the CCA key data section and the first co…

Assignees

• IBM

Inventors

• Arnold Todd W
• Boyter Gerald K
• Dames Elizabeth A
• Kisley Richard V
• Smith Eric B

Classifications

• H04L2209/24

  Electricity · mapped topic

• H04L9/0631 Primary

  Electricity · mapped topic

• H04L9/0816

  Electricity · mapped topic

• H04L9/30

  Electricity · mapped topic

• H04L9/0822 Primary

  Electricity · mapped topic