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crypto: add IsOnCurve check

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Manav Darji 2025-01-30 18:41:32 +05:30
parent ceb62bb9d3
commit 573c343d54
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1 changed files with 3 additions and 0 deletions
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3
crypto/crypto.go
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@ -189,6 +189,9 @@ func UnmarshalPubkey(pub []byte) (*ecdsa.PublicKey, error) {
if x == nil {
return nil, errInvalidPubkey
}
if !S256().IsOnCurve(x, y) {
return nil, errInvalidPubkey
}
return &ecdsa.PublicKey{Curve: S256(), X: x, Y: y}, nil
}