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crypto: add IsOnCurve check (#31100)

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Felix Lange 2025-01-30 14:10:36 +01:00 committed by Arran Schlosberg
parent 7688f988c2
commit 955616d7c2
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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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@ -169,6 +169,9 @@ 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
}