I'm curious, what principles do encryption methods used in asynchronous communication rely on? Which algorithms make sense to prefer with end-to-end encryption? What are the specific advantages of public key cryptography in particular?
How secure are message encryption algorithms?
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Asynchronous communication commonly employs algorithms like RSA, ECC (Elliptic Curve Cryptography), and AES. RSA is secure but slow, while ECC is more efficient and modern. For end-to-end encryption, solutions like the Signal Protocol enhance security further with double Diffie-Hellman key exchange.
Interesting, so in asymmetric encryption, the message needs to be encrypted and decrypted separately on both the sender and receiver sides. But why are methods like one-time pads used so rarely in modern applications?