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@IACR News - 35d
Recent advancements in cryptography are focusing on safeguarding privacy against quantum computing threats. Researchers have developed a new Traceable Receipt-free Encryption (TREnc) scheme designed to resist attacks from quantum adversaries, overcoming limitations of current encryption methods. This innovative approach allows for the randomization of ciphertexts in transit, removing any subliminal information while maintaining a public trace to ensure the integrity of the underlying plaintext. The TREnc method is also being explored for use in voting systems, enabling voters to encrypt their votes, verify their ballot was counted and prevents any proof of their vote choice. This breakthrough uses advanced Ring Learning With Errors (RLWE) techniques ensuring resilience against quantum-based attacks.
In other cryptography news, a novel approach for unclonable private keys using quantum methods is gaining traction. This method generates one-shot signatures, where a private key can only be used once before self-destructing, preventing reuse or cloning. Ethereum developers are considering integrating this method into future blockchain versions, as it combines local quantum activity with existing public key methods. Additionally, companies like Synergy Quantum are deploying Quantum Random Number Generators (QRNG) to improve cryptographic security. The company's deployment to India's Centre for Development of Advanced Computing (C-DAC) uses quantum photonics to provide secure and scalable randomness, strengthening India’s post-quantum encryption abilities.
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@medium.com - 45d
Cryptography is the cornerstone of secure digital communication, utilizing mathematical algorithms to protect information and ensure privacy. It involves transforming data into an unreadable format only authorized parties can understand. There are two main types of cryptography: symmetric and asymmetric. Symmetric cryptography uses the same key for both encryption and decryption, making it fast and efficient for large volumes of data, however, key distribution can be challenging. Examples include AES and DES.
Asymmetric cryptography, or public-key cryptography, uses a pair of keys; a public key for encryption and a private key for decryption. It provides secure key distribution and enables digital signatures but is slower and requires more computational resources than symmetric methods. RSA and ECC are examples of this. These methods are used in SSL/TLS protocols to secure internet communications, ensuring data transmission is protected through processes like handshakes, which establish shared keys. Additionally, cryptography is critical for blockchain technology, utilizing hashing to ensure data integrity and employing digital signatures for secure transactions.
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