This PIN Block Web Tool, built upon the paysec Rust library and WebAssembly (Wasm), offers an interface for working with ISO 9564 PIN blocks. ISO 9564 is a key standard for secure Personal Identification Number (PIN) management in financial services, focusing on encrypting the PIN for safe transmission. This standard prescribes various PIN block formats, each encoding the PIN into a block for encryption with an approved algorithm. Notably, these formats often intertwine the encoded PIN with the Personal Account Number (PAN) for improved security.
This tool (so far) supports Format 3 and Format 4 of the ISO 9564 PIN block. Format 3, ideal for the Triple Data Encryption Algorithm (TDEA) due to its 64-bit block size, encodes and decodes PIN and PAN fields but does not perform encryption. Conversely, Format 4, compatible with larger block size algorithms like AES (128 bits), includes both encryption and decryption processes, binding the encrypted PIN with the PAN field for heightened security during transmission.
The tool serves as an interactive resource for generating test data and implementing these PIN block formats, highlighting their role in safeguarding financial transactions.
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This tool is designed to be intuitive yet powerful, accommodating both simple and advanced use cases. The flexibility in encoding and random seed management allows for comprehensive testing and experimentation with PIN block formats. For any suggestions, wishes, or issues, please feel free to reach out to David Schmid at mail@join.tech.