Knowledge Base
Elliptic-Curve Parameter
A

w-510-mont

Summary

Name:
w-510-mont
Long Name:
W-510 Montgomery
Key size:
510 bits
Publishers:

Check your host!

Type a URL to analyze a service

Get a prompt and clear overview of your security configuration. Right now!

Security

A+
Key Size
Security

The elliptic-curve cryptography[118][119][120][121] is an approach to public-key cryptography[164][165][166] based on the elliptic curve[116][117]s. The most important property in terms of encryption strength, beyond the designer is elliptic curve key size[292][293][294]. All the key sizes available are considered secure, so there is no consideration about it.

A+
Trusted Design
Security

The elliptic-curve cryptography[118][119][120][121] is an approach to public-key cryptography[164][165][166] based on the elliptic curve[116][117]s. Note that there is controversy[287][288][289][290][291] around some of the National Institute of Standards and Technology[470][471] designed elliptic curveselliptic curves designed by NIST[285][286]. This elliptic curve designed by independent researcher[284] Daniel J. Bernstein[476][477] and there is no evidence for any compromise.

Recommendations

Add at least one elliptic curve to the list of elliptic curves supported by your server designed by independent researchers and prefer them as server configuration makes it possible.

A
Post-Quantum
Security

The elliptic curve[116][117] cryptography provides no protection against a cryptanalytic attack by a quantum computer, and no classical elliptic curve does — just as classical Diffie-Hellman does not — because a quantum computer breaks the hardness assumption they rely on. Only a hybrid key exchange (a classical algorithm combined with a post-quantum cryptography[158][159] one) or a pure post-quantum algorithm is quantum-safe.

Recommendations

Enable a hybrid key exchange or a pure post-quantum algorithm on your server, and prefer it where the configuration allows, so the connection stays secure against a future quantum computer.

Parameter Numbers

Prime (p)
0x3eddffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
Copy to clipboard
Coefficient (a)
0x3eddfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc
Copy to clipboard
Coefficient (b)
0x988d
Copy to clipboard
Generator (x)
0x1
Copy to clipboard
Generator (y)
0x380dfc3bf210d6d4c1ab56ead6bf06696ed6b2958ff82d969ac4259e73c0dcd152ff3ad25fb7f0abacd5906d9d22f68a33a980956b0468e683355436b015eea
Copy to clipboard
Order (n)
0x3eddffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffb9146ccde150ef33747ab29d1e6573d8d22de95e322303f3a00b200986fa9a2d
Copy to clipboard
Cofactor (h)
0x1
Copy to clipboard

Representations

PEM

-----BEGIN EC PARAMETERS-----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-----END EC PARAMETERS-----
Download ecparam.pem
Copy to clipboard

PARI/GP

p = 0x3eddffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
a = 0x3eddfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc;
b = 0x988d;
E = ellinit([a, b], p);
G = [0x1, 0x380dfc3bf210d6d4c1ab56ead6bf06696ed6b2958ff82d969ac4259e73c0dcd152ff3ad25fb7f0abacd5906d9d22f68a33a980956b0468e683355436b015eea];
n = 0x3eddffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffb9146ccde150ef33747ab29d1e6573d8d22de95e322303f3a00b200986fa9a2d;
h = 0x1;
Copy to clipboard

LaTeX

$\begin{aligned}
y^2 &\equiv x^3 + a x + b \pmod{p} \\
p &= 0x3eddffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff \\
a &= 0x3eddfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc \\
b &= 0x988d \\
G &= (0x1, 0x380dfc3bf210d6d4c1ab56ead6bf06696ed6b2958ff82d969ac4259e73c0dcd152ff3ad25fb7f0abacd5906d9d22f68a33a980956b0468e683355436b015eea) \\
n &= 0x3eddffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffb9146ccde150ef33747ab29d1e6573d8d22de95e322303f3a00b200986fa9a2d \\
h &= 0x1
\end{aligned}$
Copy to clipboard