storj/internal/testpeertls/certificates.go

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// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package testpeertls
import (
"crypto"
"crypto/x509"
"storj.io/storj/pkg/peertls"
)
// NewCertChain creates a valid peertls certificate chain (and respective keys) of the desired length.
// NB: keys are in the reverse order compared to certs (i.e. first key belongs to last cert)!
func NewCertChain(length int) (keys []crypto.PrivateKey, certs []*x509.Certificate, _ error) {
for i := 0; i < length; i++ {
key, err := peertls.NewKey()
if err != nil {
return nil, nil, err
}
keys = append(keys, key)
var template *x509.Certificate
if i == length-1 {
template, err = peertls.CATemplate()
} else {
template, err = peertls.LeafTemplate()
}
if err != nil {
return nil, nil, err
}
var cert *x509.Certificate
if i == 0 {
cert, err = peertls.NewCert(key, nil, template, nil)
} else {
cert, err = peertls.NewCert(key, keys[i-1], template, certs[i-1:][0])
}
if err != nil {
return nil, nil, err
}
certs = append([]*x509.Certificate{cert}, certs...)
}
return keys, certs, nil
}