package crypto

import (
	"crypto/rsa"
	"crypto/x509"
	"encoding/pem"
	"errors"
)

func BytesToPrivateKey(b []byte) (*rsa.PrivateKey, error) {
	block, _ := pem.Decode(b)
	if block == nil {
		return nil, errors.New("PEM decode failed")
	}

	key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
	if err != nil {
		return nil, err
	}

	return key, nil
}