PGPPublicKey.getBitStrenght() returns -1 for keys over curve25519

[vanitasvitae]

Hey,
it appears that in the constructor of PGPPublicKey, the bitstrenght field is set by calling

X9ECParameters ecParameters = ECNamedCurveTable.getByOID(((ECPublicBCPGKey)key).getCurveOID());

                if (ecParameters != null)
                {
                    this.keyStrength = ecParameters.getCurve().getFieldSize();
                }
                else
                {
                    this.keyStrength = -1; // unknown
                }

This method does not recognize EdDSA keys, as well as some ECDSA keys, so bitStrength is falsely reported as -1.

In particular, the method fails to identify keys with OIDs

• 1.3.6.1.4.1.11591.15.1
• 1.3.6.1.4.1.3029.1.5.1

Could you patch the ECNamedCurveTable to recognize these curves?

[dghgit]

I've added recognition for the GNU oid for Ed25519 and Cryptlib Curve-25519. The fix will show up in 170b09.

[vanitasvitae]

Nice! 👍