==Examples==Examples of well-regarded asymmetric key techniques for varied purposes include:*Diffie–Hellman key exchange protocol*DSS (Digital Signature Standard), which incorporates the Digital Signature Algorithm*ElGamal*Various elliptic curve techniques*Various password-authenticated key agreement techniques*Paillier cryptosystem*RSA encryption algorithm (PKCS#1)*Cramer–Shoup cryptosystem*YAK authenticated key agreement protocolExamples of asymmetric key algorithms not widely adopted include:*NTRUEncrypt cryptosystem*McEliece cryptosystemExamples of notable – yet insecure – asymmetric key algorithms include:*Merkle–Hellman knapsack cryptosystemExamples of protocols using asymmetric key algorithms include:*S/MIME*GPG, an implementation of OpenPGP*Internet Key Exchange*PGP*ZRTP, a secure VoIP protocol*Secure Socket Layer, now codified as the IETF standard Transport Layer Security (TLS)*SILC*SSH*Bitcoin*Off-the-Record Messaging==See also==* Symmetric-key cryptography* Books on cryptography* GNU Privacy Guard* Identity based encryption (IBE)* Key-agreement protocol* Key escrow* PGP word list* Pretty Good Privacy* Pseudonymity* Public key fingerprint* Public key infrastructure (PKI)* Quantum cryptography* Secure Shell (SSH)* Secure Sockets Layer (SSL)* Threshold cryptosystem==Notes====References==*.
== Esempi ==Esempi di tecniche a chiave pubblica ben considerati sono:*Diffie-Hellman*DSS (Digital Signature Standard), che incorpora il Digital Signature Algorithm*ElGamal*Rabin*Crittografia a curve ellittiche*Password-authenticated key agreement*Paillier cryptosystem*RSA (PKCS)*HFE (Equazioni a Campi Nascosti)Esempi di algoritmi non sicuri:*Merkle-Hellman l'algoritmo dello zaino*Algoritmo del puzzle (solo istruttivo)*Algoritmo Blum-GoldwasserEsempi di protocolli che usano algoritmi di chiave asimmetrica:*GPG (un'implementazione di OpenPGP)*Internet key exchange (IKE)*PGP*SSH*TLS (ex SSL)*SILC== Voci correlate ==*Crittografia simmetrica*Differenza fra cifratura simmetrica e asimmetrica*Public key infrastructure*OpenPGP*Firma digitale*S/MIME*Distribuzione a chiave quantistica== Collegamenti esterni ==* The GNU Privacy Guard* GPGTools* Cos'è la crittografia?