Questions tagged [backdoors]

A backdoor in a cryptosystem or algorithm allows someone to obtain access to the decrypted data, without the need for the key/password that was used to encrypt the data.

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The backdoor of Telegram on Diffie-Hellman Key Exchange and possibly other examples?

Diffie-Hellman Key-Exchange (DHKE) should be used carefully during the end-to-end encryption. A man-in-the-middle (MITM) attack is possible. Standard DHKE The simple protocol on the multiplicative ...
kelalaka's user avatar
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About a SETUP mechanism on ECDH

I'm following these three articles: Kleptography: Using Cryptography Against Cryptography, Kleptographic Attack on Elliptic Curve Based Cryptographic Protocols and Elliptic Curve Kleptography . In ...
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Post Quantum Cryptography - Verifying if there are no backdoors in these selected algorithms: crystals-kyber, crystals-dilithium, falcon, sphincs+

I was looking through https://csrc.nist.gov/projects/post-quantum-cryptography/selected-algorithms-2022 How can one begin to mathematically verify if there are no backdoors to these selected post ...
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Kleptographic attack of ECDSA key generation?

Kleptographic attacks can be designed for RSA key generation, Diffie–Hellman key exchange, DSA/ECDSA signing, etc. Is it also possible for ECDSA key generation? More detailed: Is it possible for an ...
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