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Cryptographic software implementing the Soviet encryption algorithm "Angstrem-3", used in the portable encryptor Elektronika MK 85C.
The functionality is roughly similar to that of a real encryptor. Encryption, decryption, decryption correction, and setting a custom markant are all possible. You can also generate a unique long-term key (LTK) or specify your own. To prevent unauthorized access, the key is password-protected.
If you have any questions about using the algorithm, it is recommended to read the unofficial MK 85C manual, which can be found here.
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