pkcs12

README

gopkcs12 library

This project is a fork of the PKCS12 library found in the packer code for Azure which supports Encoding.

Documentation

Overview

Package pkcs12 implements some of PKCS#12.

This implementation is distilled from https://tools.ietf.org/html/rfc7292 and referenced documents. It is intended for decoding P12/PFX-stored certificates and keys for use with the crypto/tls package.

Index

• Variables
• func Decode(pfxData []byte, password string) (privateKey interface{}, certificate *x509.Certificate, ...)
• func Encode(privateKey interface{}, certificate *x509.Certificate, ...) (pfxData []byte, err error)
• func ToPEM(pfxData []byte, password string) ([]*pem.Block, error)
• type EncodeError
  • func (e EncodeError) Error() string
• type NotImplementedError
  • func (e NotImplementedError) Error() string

Examples

• ToPEM

Variables

var (
	// ErrDecryption represents a failure to decrypt the input.
	ErrDecryption = errors.New("gopkcs12: 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("gopkcs12: decryption password incorrect")
)

Functions

func Decode

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

func Encode

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

Encode produces pfxData containing one private key, an end-entity certificate, and any number of CA certificates. It emulates the behavior of OpenSSL's PKCS12_create: it creates two SafeContents: one that's encrypted with RC2 and contains the certificates, and another that is unencrypted and contains the private key shrouded with 3DES. The private key bag and the end-entity certificate bag have the LocalKeyId attribute set to the SHA-1 fingerprint of the end-entity certificate.

func ToPEM

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

ConvertToPEM converts all "safe bags" contained in pfxData to PEM blocks.

Example

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

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

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 {
	panic(err)
}

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

_ = config

Types

type EncodeError

type EncodeError string

func (EncodeError) Error

func (e EncodeError) Error() string

type NotImplementedError

type NotImplementedError string

NotImplementedError indicates that the input is not currently supported.

func (NotImplementedError) Error

func (e NotImplementedError) Error() string