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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General questions on cryptlib are answered in the cryptlib FAQ. If Cert is a TCryptCert manuxl, you may use:. You don’t have to check the return codes after every cryptlib call.

Because it is thread-safe, lengthy cryptlib operations can be run in the background if required while other processing is performed in the foreground. A Helpfile is available for DelphiCryptlib, but you should have read Peter Gutman’s cryptlib manual before. Peter Gutman ‘s Cryptlib binaries version manuzl.

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. Please report problems and errors to problems cryptlib. The current cryptlib release is cryptlib 3. In addition the technical manual provides a wealth of background information to help users understand the security foundations on which cryptlib is built.

Anyone who has a support contract for cryptlib version 3. All standard error handling from cryptlib is done via Exception handling in Delphi.

– Objectoriented Delphi interface for Peter Gutman’s Cryptlib library

A good overview and background behind the Sleepycat licensewhich also applies for cryptlib, is also available. To subscribe, send mail to the list administrator with the word “subscribe” in the message body. 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. 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 level of individual parameters.


This is to stop people adding their own wrappers and selling it as “their” encryption product. Exact terms are given at the bottom of this page. DelphiCryptlib is an objectoriented wrapper for the functions defined in cryptlib. Note that decoupling the software from the user, for example by running in a SaaS configuration, does not exempt you from these requirements.

The standardised API allows any of cryptlob algorithms and modes supported by cryptlib to be used with a minimum of coding effort. In most cases the code needed to secure an application manuql be cut and pasted directly from the appropriate section of the manual, avoiding the need to learn yet another programming API.

If you’re unable to comply with the above license then the following, alternate usage cryptkib apply:.

Look for sample code showing how to use Cryptlib. This is to allow a central consistent version to be maintained. 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. The user manual concludes with a reference section covering the various cryptlib API functions, constants, and data types.

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 cryyptlib VB and Delphi.



This allows cryptlib to be used in freeware and shareware applications, for evaluation and research purposes, and for non-revenue-generating or personal use without charge.

This interface is more “Delphi-like” than cryptlib. The application programming interface API serves as an interface to a range of plug-in encryption modules that allow encryption algorithms to be added in a fairly transparent manner, so that adding a new algorithm or replacing an existing software implementation with custom encryption hardware can be done without any trouble.

Peter Gutman ‘s Cryptlib version 3. Anyone without a support contract will no longer be able to receive support for 3. The essential objects defined in DelphiCryptlib. You should receive a reply informing you that you’ve been added to the list.

In addition cryptlib itself is multithreaded so that computationally intensive internal operations take place in the background without impacting the performance of the calling application. There is a very low volume mailing list available that covers cryptlib development and usage and implementation details. You may use the “F1”-key when editing your source to popup online help on any DelphiCryptlib object, method or property.

If you make any changes to the code, you should send a copy of the changes to the author to allow them to be integrated into the code. You can also get the documentation in Windows help format conversion performed by David Kelvin.

I can’t give you any support and any warranties are explicitly disclaimed.