In cryptography, Curve25519 is an elliptic curve used in elliptic-curve cryptography (ECC) offering 128 bits of security (256-bit key size) and designed for use with the Elliptic-curve Diffie–Hellman (ECDH) key agreement scheme. It is one of the fastest curves in ECC, and is not covered by any known patents.[1] The reference implementation is public domain software.[2][3]
The original Curve25519 paper defined it as a Diffie–Hellman (DH) function. Daniel J. Bernstein has since proposed that the name Curve25519 be used for the underlying curve, and the name X25519 for the DH function.[4]
^Bernstein. "Irrelevant patents on elliptic-curve cryptography". cr.yp.to. Retrieved 2016-02-08.
^A state-of-the-art Diffie-Hellman function by Daniel J. Bernstein"My curve25519 library computes the Curve25519 function at very high speed. The library is in the public domain."
^"X25519". Crypto++. 5 March 2019. Archived from the original on 29 August 2020. Retrieved 3 February 2023.
In cryptography, Curve25519 is an elliptic curve used in elliptic-curve cryptography (ECC) offering 128 bits of security (256-bit key size) and designed...
voluntary tainting has already been proved in the past. (See also the libssh curve25519 introduction.) Nevertheless, a proof that the named NIST curves exploit...
registered trademark of Jason A. Donenfeld. WireGuard uses the following: Curve25519 for key exchange ChaCha20 for symmetric encryption Poly1305 for message...
Transport Layer Security (TLS) standards along with Curve25519. In 2017, NIST announced that Curve25519 and Curve448 would be added to "Special Publication...
though SMTP, HTTP, HTTPS, are also vulnerable to DoS. DNSCurve uses Curve25519 elliptic curve cryptography to establish the identity of authoritative...
ladder for Curve25519. Nevertheless, the libraries have implementations of other cryptographic primitives as well. Apart from Curve25519, there have...
use as an SDWAN or VPN application: Asymmetric public key encryption is Curve25519, a 256-bit elliptic curve variant. All traffic is encrypted end to end...
\end{aligned}}} Ed25519 is the EdDSA signature scheme using SHA-512 (SHA-2) and Curve25519 where q = 2 255 − 19 , {\displaystyle q=2^{255}-19,} E / F q {\displaystyle...
and a triple Elliptic-curve Diffie–Hellman (3-DH) handshake, and uses Curve25519, AES-256, and HMAC-SHA256 as primitives. The development of the Signal...
replacing the extremely efficient, non-quantum-safe ECDH key exchange using Curve25519 was found to increase runtime by a factor of about 2.3 (1.5–7), an estimated...
it up to adoption by VPN providers. By default, WireGuard utilizes the Curve25519 protocol for key exchange and ChaCha20-Poly1305 for encryption and message...
Encryption Standard in Galois/Counter Mode for authenticated encryption, Curve25519 for Elliptic curve Diffie-Hellman shared secret agreement, HMAC-SHA256...
high demand environments. wolfCrypt also includes support for the recent Curve25519 and Ed25519 algorithms. wolfCrypt acts as a back-end crypto implementation...
Name System Security Extensions (DNSSEC) Elliptic curve cryptography Curve25519 DNSCurve Biggs, John (6 December 2011). "DNSCrypt Encrypts Your DNS Traffic...
Local-Variable Syntax for Lambda Parameters JEP 324: Key Agreement with Curve25519 and Curve448 JEP 327: Unicode 10 JEP 328: Flight Recorder JEP 329: ChaCha20...
Algorithm uses for the DH ratchet Elliptic curve Diffie-Hellman (ECDH) with Curve25519, for message authentication codes (MAC, authentication) Keyed-hash message...
libsodium uses AVX in the implementation of scalar multiplication for Curve25519 and Ed25519 algorithms, AVX2 for BLAKE2b, Salsa20, ChaCha20, and AVX2...
{{cite journal}}: Cite journal requires |journal= (help) "After ECDH with Curve25519, is it pointless to use anything stronger than AES-128?". Cryptography...
side-channel attacks. For this reason, the standard implementation of Curve25519 uses this technique to compute an inverse. It is possible to compute the...
used for key exchange. The elliptic curve used in the key exchange is Curve25519. The handshake protocol consists of four messages, sent in plaintext:...
Bernstein has stated that he is "not aware of" patents that cover the Curve25519 elliptic curve Diffie–Hellman algorithm or its implementation. RFC 6090...
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