INNER CODE UNIT · Go

privateKeyToPublicKey

hashicorp/terraform-provider-tls · internal/provider/common_key.go:137

func privateKeyToPublicKey(prvKey crypto.PrivateKey) (crypto.PublicKey, error) {
	signer, ok := prvKey.(crypto.Signer)
	if !ok {
		return nil, fmt.Errorf("unsupported private key type: %T", prvKey)
	}

	return signer.Public(), nil
}

// privateKeyToAlgorithm identifies the Algorithm used by a given crypto.PrivateKey.
func privateKeyToAlgorithm(prvKey crypto.PrivateKey) (Algorithm, error) {
	switch prvKey.(type) {
	case rsa.PrivateKey, *rsa.PrivateKey:
		return RSA, nil
	case ecdsa.PrivateKey, *ecdsa.PrivateKey:
		return ECDSA, nil
	case ed25519.PrivateKey, *ed25519.PrivateKey:
		return ED25519, nil

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