ISO/IEC 19592-2 – How to share secrets!

ISO/IEC 19592-2 on sharing secrets has just been released.  It is the companion document to the ISO/IEC 19592-1.  OK…  This secret sharing scheme is a cryptographic technique.  It breaks up a message into parts along with a message sharing algorithm for dividing the message and another for putting it back together again.  The new ISO/IEC 19592-2 gives you the mechanisms to do this.  Both are available from Document Center Inc. now.

I blogged about the ISO/IEC 19592-1 when it was released last year.  The new Part 2 is titled Information technology – Security techniques – Secret sharing – Part 2: Fundamental mechanisms.  It specifies how you’ll go about setting up the actual sharing scheme. It will contain two functions — message confidentiality and message recovery.

The standard begins with the usual scope, referenced documents and definition sections.  There is an additional Clause 4 with symbols and abbreviated terms.  Then we move directly into secret sharing schemes themselves in Clause 5.  A number of schemes are reviewed.  These include Shamir and Ramp Shamir.  Additive, replicated additive, and computational additive are also included.  Two informative Annexes cover object identifiers and numerical examples.  An 8-item bibliography completes this 30 page document.

If you need to know how to share a secret, the ISO/IEC 19592 standards are for you.  Purchase your copies from Document Center Inc., an authorized ISO and IEC distributor.  You can find them at our webstore,  Here is a direct link to the order pages for the new ISO/IEC 19592-2 and the ISO/IEC 19592-1 for your convenience.

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ISO/IEC 19592-1 – Sharing Secrets!

ISO/IEC 19592-1, “Information technology – Security techniques – Secret sharing – Part 1: General,” has just been released.  This is a new IT security standard, the first of two standards on the subject.  The second is still in draft format and will be titled “Information technology — Security techniques — Secret Sharing — Part 2: Fundamental mechanisms” when it is released.

The trouble with secrets is that they are hard to keep.  With data, this is an especially thorny problem.  So the concept of “secret sharing” is to protect the information by dividing it into a number of pieces.  Such a scheme will have 2 main parts — The message sharing algorithm and the message reconstruction algorithm.  The first divides the message into “shares” (the pieces of the complete message).  The second allows the message to be put back together again.

What are some of the uses of “secret sharing”?  It’s used to store data in distributed systems.  And of course it is used during transmission.  It is also a fundamental technology for secure multi-party computation, used to protect data when it’s being processed in distributed systems.

What does the ISO/IEC 19592-1 cover?  The ISO/IEC 19592 series specifies secret sharing and related technologies.  The Part 1 defines the parties that are involved in such a scheme, the terminology to be used, and the parameters and properties of such a scheme.  This includes information on the general model of secret sharing.

How will you get your copy of this new release?  Use Document Center Inc. for your purchase.  We’re an authorized distributor of the ISO/IEC publications.  You can search for and order these standards at our webstore,  Here is a direct link to the order page for ISO/IEC 19592-1 for your convenience.

You may have additional standards questions.  Or you may want more information on the many additional services we offer to standards users.  Get in touch with our knowledgeable staff by phone (650-591-7600) or email ( for more information.  We have been selling compliance information since 1982.  Make us your Standards Experts!