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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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A good overview and background behind the Sleepycat licensewhich also applies for cryptlib, is also available. This crypptlib to allow a central consistent version to be maintained. A Helpfile is available for DelphiCryptlib, but you should have read Peter Gutman’s cryptlib manual before. The user manual is intended for everyday cryptlib use and contains detailed documentation on every aspect of cryptlib’s functionality.

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. The GPL-compatible license a. Peter Gutman ‘s Cryptlib version 3. 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.

For details of the implementation crytlib a look into the interface part of the DelphiCryptlib.

If Cert is a TCryptCert variable, you may use:. In addition, cryptlib is free for use in low-cost, non-open-source mwnual such as shareware, and for personal and research use. For information on commercial use, there is a cryptlib brochure available in PDF format.

All standard error handling from cryptlib is done via Exception handling in Delphi. You can also mwnual the documentation in Windows help format conversion performed by David Kelvin. In addition the author reserves the right to grant free licenses for commercial use in special cases for example where there is a general benefit to the publiccontact the author for details if you think you qualify. There is a very low volume mailing list available cryptlbi covers cryptlib development and usage and implementation details.


Before working with it, you should read at least the Installation section kanual the manual, which covers details on installing the software on different platforms under Unix you need to unzip with the -a option. I can’t give you any support and any warranties are explicitly disclaimed.

– Objectoriented Delphi interface for Peter Gutman’s Cryptlib library

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. Note that decoupling the software from the user, for example by running in a Cyrptlib configuration, does not exempt you from these requirements. Please report problems and errors to problems cryptlib. 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.

If you’re unable to comply with the above license then the following, alternate usage conditions apply:. You may use the “F1”-key when editing your source to popup online help on any DelphiCryptlib object, method or property.

You don’t have to check the ,anual codes after every cryptlib call. 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.

Please use this with the latest CL In most cases the crytplib needed to secure an application can be cut cryptlibb pasted directly from the appropriate section of the manual, avoiding the need to learn yet another programming API.


You should receive a reply informing you that you’ve been added to the list. These routines provide an unprecedented level of performance, in most cases running faster than expensive, specialised encryption hardware designed to perform the same task.

In addition logical errors such as, for mamual, a key exchange function being called in the wrong sequence, are checked for and identified. Anyone who has a support contract for cryptlib version 3.

The standardised API allows any of the algorithms and modes supported by cryptlib to be used with a minimum of coding effort.

In addition the technical manual provides a wealth of background information to help users understand the security foundations on which cryptlib is built. Delphi interface file generated from cryptlib. 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. Exact terms are given at the bottom of this page. 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. This is to stop people adding their own wrappers and selling it as “their” encryption product.

Wolfgang Gothier has a web page with Cryptpib 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.