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package pkcs12

import ""

Package pkcs12 implements some of PKCS#12.

This implementation is distilled from and referenced documents. It is intended for decoding P12/PFX-stored certificates and keys for use with the crypto/tls package.

This package is frozen. If it's missing functionality you need, consider an alternative like



Package Files

bmp-string.go crypto.go errors.go mac.go pbkdf.go pkcs12.go safebags.go


var (
    // ErrDecryption represents a failure to decrypt the input.
    ErrDecryption = errors.New("pkcs12: decryption error, incorrect padding")

    // ErrIncorrectPassword is returned when an incorrect password is detected.
    // Usually, P12/PFX data is signed to be able to verify the password.
    ErrIncorrectPassword = errors.New("pkcs12: decryption password incorrect")

func Decode Uses

func Decode(pfxData []byte, password string) (privateKey interface{}, certificate *x509.Certificate, err error)

Decode extracts a certificate and private key from pfxData. This function assumes that there is only one certificate and only one private key in the pfxData; if there are more use ToPEM instead.

func ToPEM Uses

func ToPEM(pfxData []byte, password string) ([]*pem.Block, error)

ToPEM converts all "safe bags" contained in pfxData to PEM blocks. Unknown attributes are discarded.

Note that although the returned PEM blocks for private keys have type "PRIVATE KEY", the bytes are not encoded according to PKCS #8, but according to PKCS #1 for RSA keys and SEC 1 for ECDSA keys.


p12, _ := base64.StdEncoding.DecodeString(`MIIJzgIBAzCCCZQGCS ... CA+gwggPk==`)

blocks, err := ToPEM(p12, "password")
if err != nil {

var pemData []byte
for _, b := range blocks {
    pemData = append(pemData, pem.EncodeToMemory(b)...)

// then use PEM data for tls to construct tls certificate:
cert, err := tls.X509KeyPair(pemData, pemData)
if err != nil {

config := &tls.Config{
    Certificates: []tls.Certificate{cert},

_ = config

type NotImplementedError Uses

type NotImplementedError string

NotImplementedError indicates that the input is not currently supported.

func (NotImplementedError) Error Uses

func (e NotImplementedError) Error() string


internal/rc2Package rc2 implements the RC2 cipher

Package pkcs12 imports 16 packages (graph) and is imported by 270 packages. Updated 2021-01-15. Refresh now. Tools for package owners.