Cryptography and the Future of Digital Trust

Cryptography underpins trust in the digital economy, securing communications, financial transactions, passwords, and sensitive records. Blockchain uses the same techniques to authenticate and share records without relying on a central authority, with applications in finance, supply chains, corporate bookkeeping, and digital identity. But these technologies also introduce new vulnerabilities: quantum computing could defeat widely used encryption, while cryptocurrencies raise concerns about illicit finance, energy use, and regulatory oversight. As these technologies advance, policymakers must weigh innovation and security against risks to privacy and civil liberties.

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