Developer Guide

  • 10/27/2020
  • Public Content

Symmetric Key Cryptography

When symmetric key encryption is used, the same key is used for both encryption and decryption. The advantage of symmetric key encryption is that it is simple, quick and, in many cases, can be offloaded by the hardware. The disadvantage is that the keys must be agreed upon in a secure manner.

Product and Performance Information


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