obbsubjectextractor

README

OpenBanking Brasil Subject DN extractor

Using this lib you will be capable of extract the subject DN following RFC 4514 definitions, with aditional translation of OIDs to names specified by the OpenBanking Brasil security specs.

The implementation follows the rules at August 26, 2021.

History

Version	Date (aprox.) of spec
initial	August 26, 2021

Installation

Lib

go get github.com/esachser/obbsubjectextractor

Command

go get github.com/esachser/obbsubjectextractor/cmd/obbsubextractor

Usage - lib

Example from the cmd folder;

import (
	"crypto/x509"
	"encoding/pem"
	"flag"
	"fmt"
	"os"
	"path/filepath"

	"github.com/esachser/obbsubjectextractor"
)

func main() {
	filename := os.Args[1]
	pemFile, _ := os.ReadFile(filename)
	pemBlock, _ := pem.Decode(pemFile)
	cert, _ := x509.ParseCertificate(pemBlock.Bytes)

	subjectDN, err := obbsubjectextractor.ExtractSubject(cert)

	fmt.Println(subjectDN, err)
}

Usage - command

obbsubextractor <path-to-pem>

Documentation

Index

• func ExtractSubject(cert *x509.Certificate) (string, error)

Functions

func ExtractSubject

func ExtractSubject(cert *x509.Certificate) (string, error)

ExtractSubject Returns the subject DN of certificate in accordance to Brazilian Security specs <https://openbanking-brasil.github.io/specs-seguranca>