Key rotation: what it is and how often to rotate keys
What goes wrong without key rotation, how often NIST suggests rotating, why rotation isn't re-encryption, the special case of video keys, and what to ask.
#encryption
20 articles tagged #encryption
Articles
Is Base64 encryption? Why encoding isn't security
No: Base64 is a public, keyless encoding anyone can reverse. How it works, why 'Base64-encrypted' passwords, tokens and links leak, and what to use instead.
Post-quantum cryptography: what changes and when
Quantum computers threaten RSA and elliptic curves, not AES. NIST's new standards, harvest now decrypt later, hybrid key exchange in browsers, and a plan for platforms.
What is end-to-end encryption, and how does it work?
End-to-end encryption keeps the keys on your devices, so even the service can't read your messages. How it works, how WhatsApp, Signal and Telegram differ, and what it means for leaks.
Encryption vs tokenization: what's the difference?
Encryption transforms data; tokenization replaces it. How they compare with masking and hashing, how RBI card tokenisation works, and what to use for student and fee data.
Encryption key management: a practical guide
Keys, not ciphers, are where encryption usually fails. The key lifecycle, KMS, HSMs and vaults compared, keeping keys out of code, and what to ask a vendor.
Envelope encryption and KMS, explained
Data keys encrypt the data; a master key in a KMS wraps the data keys. How cloud KMS services work, why rotation is cheap, and the cost, quota and caching trade-offs.
DRM vs encryption: what's the difference?
All DRM uses encryption, but the two fail differently: captured keys, software-only devices, recording and shared logins. What each stops, and what to ask vendors.
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