[gnutls-devel] GnuTLS | Ed448 keys are indicated as having a 456-bit "security level" (#1231)

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Thu May 13 16:55:11 CEST 2021




Brian Henry commented:


"security levels" is different to "key size(key length)"

I found some [explanation](https://cryptobook.nakov.com/asymmetric-key-ciphers/elliptic-curve-cryptography-ecc):
> The Curve448 provides ~ 224-bit security level (more precisely [222.8-bits](https://safecurves.cr.yp.to/rho.html)). The private keys for the Curve448 are 446 bits and are typically encoded as 448-bit integers (56 bytes, 112 hex digits). The public keys are also encoded as 448-bit integers.

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