cryptosys.net

What It Is

CryptoSys is a family of cryptography development tools from D.I. Management Services Pty Limited. It is positioned not as a cloud service, but as local libraries and command-line tools that can be embedded into applications. Its product line covers CryptoSys API for symmetric encryption, CryptoSys PKI Pro for public-key cryptography and certificates, the free post-quantum cryptography library CryptoSys PQC, XML canonicalization tool SC14N, XML query tool xmlsq, QR code generator diQRcode, and Firma SAT for Mexico SAT electronic tax invoices.

Core Capabilities and Tech Stack

CryptoSys API focuses on symmetric cryptography, supporting AES, Triple DES, ChaCha20, Salsa20, ArcFour, AES-GCM, ChaCha20-Poly1305, HMAC, CMAC, KMAC, SHA-1/2/3, PBKDF2, SCRYPT, ASCON, random number generation, compression, Base64/Hex encoding, and more. PKI Pro handles RSA, ECDSA, X.509, PKCS#8/12, and CMS/PKCS#7. PQC already supports the NIST-approved ML-KEM, ML-DSA, and SLH-DSA algorithms. Supported languages include Visual Basic, VBA, VB.NET, C/C++, C#, ASP, and Python, with some products also offering Delphi, Java, and command-line interfaces.

Pricing and Licensing

The main site indicates that CryptoSys PQC, xmlsq, and similar tools are free. CryptoSys API, PKI Pro, SC14N, diQRcode, and Firma SAT offer free, fully functional trial versions, but commercial use requires purchasing a license. Specific pricing and payment methods are not disclosed. Most commercial products do not state that they are open source, so they should be evaluated as closed-source commercial libraries.

Pros and Cons

Its strengths are broad coverage of cryptographic standards and unusually detailed support for enterprise legacy environments such as Windows, Office VBA, VB6, and .NET. The documentation, FAQ, sample code, and changelogs are also fairly complete. CryptoSys also emphasizes that it does not rely on Windows CryptoAPI or OpenSSL, instead using independent DLLs, which makes embedding and redistribution easier. The downsides are limited cross-platform information, with a primary focus on Windows; insufficient detail around modern development ecosystems such as package managers, CI/CD, and cloud-native integration; and a lack of transparency around pricing, source-code availability, and Chinese-language support.

Who It’s For and Access from China

CryptoSys is suitable for developers who need to add encryption, signing, certificate, XML-DSIG, or QR code capabilities to desktop software, Office automation, or traditional enterprise systems. It is also relevant for engineering teams evaluating post-quantum algorithms. If a project already relies heavily on OpenSSL, libsodium, Bouncy Castle, native .NET cryptography libraries, or Python cryptography, it should be compared in terms of compliance requirements, platform fit, and licensing costs. The source text does not state the access status from mainland China, and payment methods are also unknown. Alternatives such as OpenSSL, libsodium, Bouncy Castle, xmlsec, and ZXing may be worth preparing.