About 1,200,000 results
Open links in new tab
  1. A Security Blog
    https://asecuritysite.com/ecc/python_25519ecdh2

    Authenticated ECDH with X25519 using Python - asecuritysite.com

    Tags:
    X25519 Elliptic Curve
    Key
  2. pyca/cryptography
    https://cryptography.io/.../asymmetric/x25519.html

    X25519 key exchange — Cryptography 3.4.5 documentation

    Tags:
    X25519 Elliptic Curve
    X25519 Key Exchange
    Curve25519 Algorithm
  3. PyPI
    https://pypi.org/project/pyhpke

    pyhpke · PyPI

  4. A Security Blog
    https://asecuritysite.com/x25519

    Elliptic Curve (ECDH) X25519 and X448 - Python

    Tags:
    X25519 Elliptic Curve
    Key
  5. The Computer Laboratory
    https://www.cl.cam.ac.uk/teaching/2122/Crypto/curve25519.pdf
    [PDF]

    Implementing Curve25519/X25519: A Tutorial on Elliptic …

    Tags:
    X25519 Elliptic Curve
    Curve25519 Algorithm
    Curve25519 Example
  6. A Security Blog
    https://asecuritysite.com/curve25519/python_25519_clamp

    X25519 with Clamping using Python - asecuritysite.com

  7. People also ask
    What is X25519 key exchange?
    X25519 is an elliptic curve Diffie-Hellman key exchange using Curve25519 . It allows two parties to jointly agree on a shared secret using an insecure channel. For most applications the shared_key should be passed to a key derivation function.

    X25519 key exchange — Cryptography 3.4.5 documentation

    cryptography.io
    Are X25519 private keys modified?
    A: Private keys used in actual X25519 exchanges are modified slightly (see "Clamping" above), and you'll need to set/clear the same five bits yourself on any keys that you use for key exchange.

    Hands-on: X25519 Key Exchange

    x25519.xargs.org
    What is the key size of X25519?
    A: The key size of X25519 is 256 bits (32 bytes), but five of those bits are "clamped" to fixed values to address various security concerns: This makes a key with strength 251 bits. For further details, see section 4.7 ("Clamping") in Implementing Curve25519/X25519 by Martin Kleppmann.

    Hands-on: X25519 Key Exchange

    x25519.xargs.org
    When should I use X25519?
    You should ONLY use it if you’re 100% absolutely sure that you know what you’re doing because this module is full of land mines, dragons, and dinosaurs with laser guns. X25519 is an elliptic curve Diffie-Hellman key exchange using Curve25519 . It allows two parties to jointly agree on a shared secret using an insecure channel.

    X25519 key exchange — Cryptography 3.4.5 documentation

    cryptography.io
    Are Y coordinates needed for X25519?
    A: The y coordinates for each point are not needed for X25519, and for simplicity they are not computed. Using only the x coordinate also reduces public key length, as the y coordinate isn't part of the key. Each valid point on the curve has two y values that satisfy sqrt (y2). Only half of x values are valid on Curve25519.

    Hands-on: X25519 Key Exchange

    x25519.xargs.org
    What is the difference between X25519 and Ed25519?
    While the key exchange is refered by the function X25519, Ed25519 refers to the digital signature algorithm. X25519 performs scalar multiplication on the Montgomery form of Curve25519. It uses a Montgomery ladder on the u-coordinate only, see here for the algorithm.

    pmvr/micropython-curve25519: Implementation of X25519 and Ed2551…

    github.com
    Feedback
  8. Wikipedia
    https://en.wikipedia.org/wiki/Curve25519

    Curve25519 - Wikipedia

    Tags:
    Elliptic Curve Cryptography Ecc
    Curve25519
  9. yp.to
    https://cr.yp.to/ecdh.html

    Curve25519: high-speed elliptic-curve cryptography

    Tags:
    Curve25519 Example
    Ecc Curve25519 Certificate
  10. Github
    https://github.com/pmvr/micropython-curve25519

    Implementation of X25519 and Ed25519 as a micropython mpy

    Tags:
    X25519 Elliptic Curve
    X25519 Key Exchange
    Curve25519 Algorithm
  11. xargs.org
    https://x25519.xargs.org

    Hands-on: X25519 Key Exchange

    Overview. Key exchange is a mechanism where two parties (Alice and Bob) can agree on the same number without an eavesdropper being able to tell what it is. X25519 is the name of one method of key exchange, by doing point …

    Tags:
    X25519 Elliptic Curve
    X25519 Key Exchange
  12. Some results have been removed