jedisct1 · November 29, 2020 19:42
diff --git a/tls-cert-hash.go b/tls-cert-hash.go
 package main

 import (
 	"crypto/sha256"
 	"crypto/x509"
 	"fmt"
 	"io/ioutil"
 )

 func main() {
 	dat, err := ioutil.ReadFile("/tmp/cert.der")
 	if err != nil {
 		panic(err)
 	}
 	certs, err := x509.ParseCertificates(dat)
 	if err != nil {
 		panic(err)
 	}
 	for _, cert := range certs {
 		h := sha256.Sum256(cert.RawTBSCertificate)
 		fmt.Printf("[%v]: %v\n", cert.Subject, fmt.Sprintf("%x", h))
 	}
 }
	package main

	import (
	"crypto/sha256"
	"crypto/x509"
	"fmt"
	"io/ioutil"
	)

	func main() {
	dat, err := ioutil.ReadFile("/tmp/cert.der")
	if err != nil {
	panic(err)
	}
	certs, err := x509.ParseCertificates(dat)
	if err != nil {
	panic(err)
	}
	for _, cert := range certs {
	h := sha256.Sum256(cert.RawTBSCertificate)
	fmt.Printf("[%v]: %v\n", cert.Subject, fmt.Sprintf("%x", h))
	}
	}