What is the "Harvest Now, Decrypt Later" (HNDL)?

HNDL involves adversaries collecting and storing encrypted data today, intending to decrypt it in the future when quantum computing capabilities, capable of breaking current encryption, become available.

What are the quantum threats to cold storage and P2SH or P2PKH in crypto wallets?

Quantum threats to cold storage and P2SH or P2PKH arise from the ability of quantum computers to calculate private keys from public keys, making them vulnerable to quantum computing attacks and potentially leading to unauthorized fund transfers and theft.

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What are the limitations of end-to-end encryption in current chat messaging?

Q: What are the limitations of end-to-end encryption in current chat messaging?

End-to-end encryption, while secure against current threats, is not quantum- secure and thus vulnerable to future quantum computing attacks. Quantum security is essential now because data is already being harvested and stored by adversaries for future decryption once quantum computers become capable of breaking current encryption algorithms.

End-to-end encryption in chat messaging services, such as WhatsApp and Signal, provides security against present-day threats by ensuring that messages can only be read by the intended recipient. However, these services are not quantum-secure and are vulnerable to future quantum computing attacks. Quantum computers, once they become sufficiently advanced, will be able to break the encryption algorithms used by these services, exposing all harvested chat history and messages. Given that data is already being harvested and stored by adversaries, adopting quantum-secure encryption now is imperative to safeguard data against future quantum threats and to protect businesses and individuals from data breaches, intellectual property theft, and other cybercrimes.

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