Microsoft KB Archive/255754

= How to Determine If You Have 128-Bit or 56-Bit Encryption for SSL/TLS =

Article ID: 255754

Article Last Modified on 1/27/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q255754



SUMMARY
When you implement data encryption, you must determine if you have 56-bit low encryption or 128-bit high encryption. To do so, right-click the Schannel.dll file in Windows Explorer, click Properties, and then click the Version tab.

If the description is "PCT / SSL Security Provider (Export Version)" you have 56-bit encryptions. If the description is "TLS / SSL Security Provider (US/Canada Only, Not for Export)" it is 128-bit encryption.



MORE INFORMATION
The Schannel.dll file is the primary dynamic-link library (DLL) responsible for establishing a secure channel with SSL or Transport Layer Security (TLS).

You must figure out the encryption strength from the computer's configuration. You cannot obtain the bit strength used for encryption out of a X509 V3 certificate that is used to encrypt data.

Keywords: kbinfo kbenv KB255754

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