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It allows IP addresses to be encrypted while maintaining their format, making it suitable for logging and data retention purposes where IP addresses need to be pseudonymized.\n\nFeatures:\n- Format-preserving encryption for both IPv4 and IPv6 addresses\n- Prefix-Preserving encryption for produce encrypted IP addresses with the same prefix\n- Cryptographically secure using AES-128 as the underlying cipher\n- Preserves subnets: addresses sharing a prefix are encrypted to addresses sharing the same prefix\n- Deterministic: same input and key always produces the same output\n- Fast and constant-time operation\n\n\n## Known Implementations\n\n| Name                                                                                                            | Language   |\n| --------------------------------------------------------------------------------------------------------------- | ---------- |\n| [Reference implementation](https://github.com/jedisct1/draft-denis-ipcrypt/tree/main/reference-implementations) | Python     |\n| [ipcrypt2](https://github.com/jedisct1/ipcrypt2)                                                                | C          |\n| [rust-ipcrypt2](https://github.com/jedisct1/rust-ipcrypt2)                                                      | Rust       |\n| [ipcrypt-js](https://www.npmjs.com/package/ipcrypt)                                                             | JavaScript |\n| [go-ipcrypt](https://github.com/jedisct1/go-ipcrypt)                                                            | Go         |\n| [zig-ipcrypt](https://github.com/jedisct1/zig-ipcrypt)                                                          | Zig        |\n| [ipcrypt-swift](https://github.com/jedisct1/ipcrypt-swift)                                                          | Swift        |\n| [ipcrypt-cobol](https://github.com/jedisct1/ipcrypt-cobol)                                                          | Cobol        |\n\n## Acknowledgements\n\n- [jedisct1](https://github.com/jedisct1/) - for the original implementation","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkassane%2Fd-ipcrypt2","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkassane%2Fd-ipcrypt2","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkassane%2Fd-ipcrypt2/lists"}