The technical reference manual covers the design and internals of cryptlib itself. cryptlib features 11 Performance cryptlib is re-entrant and completely thread-safe . This interface is more “Delphi-like” than , which is “C-like”. for DelphiCryptlib, but you should have read Peter Gutman’s cryptlib manual before. The cryptlib manual [23, page 35] states that the programmer is required to check that each function returns CRYPT_OK, and that the wrong code shown above.

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If you’re unable to comply with the above license then the following, alternate usage conditions apply:. Wolfgang Gothier has a web page with Visual Basic and Delphi add-ons for cryptlib that provide more VB- and Delphi-like interfaces than the standard one, as well as sample code in VB and Delphi.


The standardised API allows any of the algorithms and modes supported by cryptlib to be used with a minimum of coding effort. Most cryptlib attributes are defined as properties in DelphiCryptlib.

Because it is thread-safe, lengthy cryptlib operations can be run in the background if required while other processing is performed in the foreground. If Cert is a TCryptCert variable, you may use:.

A Helpfile is available for DelphiCryptlib, but you should have read Peter Gutman’s cryptlib manual before.

– Objectoriented Delphi interface for Peter Gutman’s Cryptlib library

You may use the “F1”-key when editing your source to popup online help on any DelphiCryptlib object, method or property. The technical reference manual covers the design and internals of cryptlib itself, including the cryptlib security model and security mechanisms that protect every part of cryptlib.

Before working with it, you should read at least the Installation section of the manual, which covers details on installing the software on different platforms under Unix you need to unzip with the -a option.


For details of the implementation have a look into the interface part of the DelphiCryptlib. In addition cryptlib itself is multithreaded so that computationally intensive internal operations take cryptpib in the background without impacting the performance of the calling application. To subscribe, send mail to the list administrator with the word “subscribe” in the message body.

Anyone who has a support contract for cryptlib version 3.

Please use this with the latest CL Peter Gutman ‘s Cryptlib binaries version 3. Note that decoupling the software from the user, for example by running in a SaaS configuration, does not exempt you from these requirements. And you know, if you download the source, you do it on your own risk. On initialisation it performs extensive self-testing against test data from encryption standards documents, and the APIs check each parameter and function call for errors before any actions are performed, with error reporting down to the crryptlib of individual parameters.

The user manual is intended for everyday cryptlib use and contains detailed documentation on every aspect of cryptlib’s functionality. The essential objects defined in DelphiCryptlib. In addition logical errors such as, for example, a key exchange function being called in the wrong sequence, are checked for and identified.

Peter Gutman ‘s Cryptlib version 3. You should receive a reply informing you that you’ve been added to the list. Look for sample code showing how to use Cryptlib. The GPL-compatible license a. These routines provide an unprecedented level of performance, in most cases running faster than expensive, specialised encryption hardware designed to perform the same task.

This interface is more “Delphi-like” than cryptlib. In particular you can’t distribute cryptlib or any modified form of it as your own encryption product.

Delphi interface file generated from cryptlib. There is a very low volume mailing list available that covers cryptlib development and usage and implementation details.


Any large-scale commercial use of cryptlib requires a license. Exact terms are given at the bottom of this page. Most of the core algorithms used in cryptlib have been implemented in assembly language in order to provide the maximum possible performance, and will take advantage of crypto hardware acceleration facilities present in some CPUs such as the Via C3 family. I can’t give you any support and any warranties are explicitly disclaimed. Any software you create with this code may not be merely a set or subset of cryptlib, with or without minor added functionality or a different interface.

An archive of older mailing-list postings is also available. You can also get the documentation in Windows help format conversion performed by David Kelvin. A good overview and background behind the Sleepycat licensewhich also applies for cryptlib, is also available. In addition the easy-to-use high-level routines allow for the exchange of encrypted or signed messages or the establishment of secure communications channels with a minimum of programming overhead.

The current cryptlib release is cryptlib 3.

This is to stop people adding their own wrappers and selling it as “their” encryption product. You don’t have to check the return codes after every cryptlib call.

General questions on cryptlib are answered in the cryptlib FAQ. In addition, cryptlib is free for use in low-cost, non-open-source applications such as shareware, and for personal and research use. Anyone without a support contract will no longer be able to receive support for 3.