Developer Guide

  • 04/03/2019
  • Public Content
Contents

Cryptography

Cryptography is used by Intel® DAL applets and firmware to exchange data securely, validate its integrity, and authenticate another party. The com.intel.crypto package provides an interface to cryptographic services.
The goals of cryptography are fourfold:
  • Data Integrity – Ensure that data is created/modified by authorized parties only.
  • Secrecy/Confidentiality – Restrict access to authorized parties only.
  • Authentication – Verify the identity of an entity.
  • Non-repudiation – Verify an action or data in such a way that denying its validity is impossible.
These goals can be achieved by using one or more of the following algorithms and a confidential key:
  • Symmetric key cryptography:
      the same key is used for both encryption and decryption.
  • Public (asymmetric) key cryptography:
    • Encryption – a public key is used for encryption;  a private key is used for decryption.
    • Digital signing – a private key is used for signing;  a public key is used for verification. 
The following sections describe the cryptography algorithms that are supported by Intel DAL.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804