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Securing communications through mathematical techniques
Foundation of Security
Cryptography is the practice of securing information through mathematical algorithms that transform readable data into unintelligible ciphertext. It's the foundation of secure communications, protecting everything from banking transactions to messaging apps. Modern cryptography enables confidentiality, integrity, authentication, and non-repudiation.
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AES, shared keys
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RSA, public/private keys
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SHA-256, data integrity
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Verify authenticity
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Secure web communications
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Public Key Infrastructure
Today's cryptography relies on mathematical problems that are hard for classical computers to solve—but quantum computers could break current encryption schemes. Post-quantum cryptography is developing new algorithms resistant to quantum attacks. As quantum computing advances, transitioning to quantum-resistant cryptography will be critical for long-term security.
Master the mathematics and techniques securing digital communications.