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fix：rsa invalid key result in panic nil pointer (#18) #19

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Merged
leeqvip merged 1 commit into from
Mar 24, 2022
Merged

fix：rsa invalid key result in panic nil pointer (#18) #19

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20 changes: 20 additions & 0 deletions rsa.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,10 @@ func RSAGenerateKey(bits int, out io.Writer) error {
// RSAGeneratePublicKey generate RSA public key
func RSAGeneratePublicKey(priKey []byte, out io.Writer) error {
block, _ := pem.Decode(priKey)
if block == nil{
return errors.New("key is invalid format")
}

// x509 parse
privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
Expand All @@ -47,6 +51,10 @@ func RSAGeneratePublicKey(priKey []byte, out io.Writer) error {
// RSAEncrypt RSA encrypt
func RSAEncrypt(src, pubKey []byte) ([]byte, error) {
block, _ := pem.Decode(pubKey)
if block == nil{
return nil, errors.New("key is invalid format")
}

// x509 parse
publicKeyInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
if err != nil {
Expand All @@ -69,6 +77,10 @@ func RSAEncrypt(src, pubKey []byte) ([]byte, error) {
// RSADecrypt RSA decrypt
func RSADecrypt(src, priKey []byte) ([]byte, error) {
block, _ := pem.Decode(priKey)
if block == nil{
return nil, errors.New("key is invalid format")
}

// x509 parse
privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
Expand All @@ -86,6 +98,10 @@ func RSADecrypt(src, priKey []byte) ([]byte, error) {
// RSASign RSA sign, use crypto.SHA256
func RSASign(src []byte, priKey []byte) ([]byte, error) {
block, _ := pem.Decode(priKey)
if block == nil{
return nil, errors.New("key is invalid format")
}

// x509 parse
privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
Expand All @@ -110,6 +126,10 @@ func RSASign(src []byte, priKey []byte) ([]byte, error) {
// RSAVerify RSA Verify
func RSAVerify(src, sign, pubKey []byte) error {
block, _ := pem.Decode(pubKey)
if block == nil{
return errors.New("key is invalid format")
}

// x509 parse
publicKeyInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
if err != nil {
Expand Down