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crypto: add IsOnCurve check

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This commit is contained in:
Felix Lange 2025-01-30 14:07:56 +01:00
parent 7d0e197def
commit 9f4b19555f
1 changed files with 3 additions and 0 deletions
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3
crypto/crypto.go
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@ -178,6 +178,9 @@ 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
}