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Applications of Cryptography in IT Data Encryption: Protects sensitive data (e.g., personal information, financial details) during storage and transmission. Secure Communication: Ensures privacy in protocols like HTTPS, VPNs, and email encryption (e.g., PGP). Authentication: Uses digital certificates (PKI) to verify identities in online systems. Blockchain Technology: Cryptographic techniques like hashing and digital signatures ensure the immutability and security of blockchain transactions. Digital Signatures: Verifies the authenticity and integrity of digital documents or software. Password Protection: Hashing algorithms secure stored passwords in databases. Secure Software Updates: Validates the authenticity of updates using cryptographic signatures.
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