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Purchase CryptoSys API cryptography software

Developer's Licence

A Developer's Licence for the CryptoSys API costs US$139 US$99 (excluding government taxes).

One developer licence allows you to use the program on one developer PC and allows full incorporation into your applications for distribution to unlimited third parties world wide or within your organisation. Please read the developer licence.

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Are you buying the right product?
Please note we sell two different products under the CryptoSysTM brand name. This page is for CryptoSys API, which provides symmetrical encryption with block ciphers like AES, Blowfish and Triple DES; and other elementary cryptographic functions.

This is NOT for CryptoSys PKI Pro which provides asymmetric public key encryption and digital signing with RSA and X.509 certificates. For the differences between the two products, see CryptoSys Product Features. For more on CryptoSys PKI Pro, see here.

Try before you buy

You may evaluate the Trial Edition of CryptoSys API for free before you buy. All the functionality of the full Licensed Edition is available in the Trial Edition. Please make sure it does what you require before purchase.

To purchase

We sell our products through our reseller, FastSpring, who accept all major credit credit cards including American Express, Mastercard and Visa as well as PayPal, Purchase Orders and Wire Transfers.

Select quantity of CryptoSys API
  1. Purchase the CryptoSys API Developer Licence from the FastSpring Secure Order Store: Buy It Now »
    Buy it now
  2. You will be issued with a 14-character Licence ID. The Licence ID is in the Delivery Information email you will receive from FastSpring acknowledging your purchase. (Where is my Licence ID?)
  3. Enter your Licence ID on our download page to receive the latest Developer Edition of the software.

Note that the fee paid for the licence is purely for the licence and the right to download one copy of the software. You are assumed to have tested the Trial Edition and satisfied yourself that it works as you require.

Credit card statement:

Your credit card will be billed by FS* or FS* Please make sure any purchasing officer in your company who might review credit card statements is aware of this.

If you have problems with your credit card when making making a payment, please follow the Contact links on the FastSpring order page and they will try to help you or follow this FastSpring Contact link.

Where is my invoice?

Your invoice is a link in the Your Order email you should have received from FastSpring. This is the first email you should receive after placing your order. It starts with "Thank you for your order! Your order is currently processing." The link to the invoice is directly below, begins with and includes your Order ID. Your Order ID number will be of the form DIMxxxxxx-xxxx-xxxxx.

invoice link

Where is my licence ID?

The second email you should receive is the Delivery Information email, which is sent when the payment is processed. This will contain your 14-character Licence ID for downloading.

Dear ...,
Thank you for purchasing ...


Payments by wire transfer

If you paid by wire transfer please be aware that it takes at least three business days for the transaction to be processed. This is handled by FastSpring. You may be required to submit proof of transfer to them. If you have a query about the status, please contact FastSpring directly and quote your order ID number. Your Order ID number will be of the form DIMxxxxxx-xxxx-xxxxx.


Licenced owners may download the CryptoSys API Developer Version here.

Integrity Check

Check the integrity of your CryptoSys API software here.


For further information, or to report a problem, please contact us.

This page last updated 28 May 2023

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