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crypto.go
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crypto.go
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package acctest
import (
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"math/big"
"strings"
"time"
)
const (
pemBlockTypeCertificate = `CERTIFICATE`
pemBlockTypeRsaPrivateKey = `RSA PRIVATE KEY`
pemBlockTypePublicKey = `PUBLIC KEY`
pemBlockTypeCertificateRequest = `CERTIFICATE REQUEST`
)
var tlsX509CertificateSerialNumberLimit = new(big.Int).Lsh(big.NewInt(1), 128) //nolint:gomnd
// TLSRSAPrivateKeyPEM generates a RSA private key PEM string.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: private_key_pem = "%[1]s"
func TLSRSAPrivateKeyPEM(bits int) string {
key, err := rsa.GenerateKey(rand.Reader, bits)
if err != nil {
//lintignore:R009
panic(err)
}
block := &pem.Block{
Bytes: x509.MarshalPKCS1PrivateKey(key),
Type: pemBlockTypeRsaPrivateKey,
}
return string(pem.EncodeToMemory(block))
}
// TLSRSAPublicKeyPEM generates a RSA public key PEM string.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: public_key_pem = "%[1]s"
func TLSRSAPublicKeyPEM(keyPem string) string {
keyBlock, _ := pem.Decode([]byte(keyPem))
key, err := x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
publicKeyBytes, err := x509.MarshalPKIXPublicKey(&key.PublicKey)
if err != nil {
//lintignore:R009
panic(err)
}
block := &pem.Block{
Bytes: publicKeyBytes,
Type: pemBlockTypePublicKey,
}
return string(pem.EncodeToMemory(block))
}
// TLSRSAX509LocallySignedCertificatePEM generates a local CA x509 certificate PEM string.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: certificate_pem = "%[1]s"
func TLSRSAX509LocallySignedCertificatePEM(caKeyPem, caCertificatePem, keyPem, commonName string) string {
caCertificateBlock, _ := pem.Decode([]byte(caCertificatePem))
caCertificate, err := x509.ParseCertificate(caCertificateBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
caKeyBlock, _ := pem.Decode([]byte(caKeyPem))
caKey, err := x509.ParsePKCS1PrivateKey(caKeyBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
keyBlock, _ := pem.Decode([]byte(keyPem))
key, err := x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
serialNumber, err := rand.Int(rand.Reader, tlsX509CertificateSerialNumberLimit)
if err != nil {
//lintignore:R009
panic(err)
}
certificate := &x509.Certificate{
BasicConstraintsValid: true,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
NotAfter: time.Now().Add(24 * time.Hour), //nolint:gomnd
NotBefore: time.Now(),
SerialNumber: serialNumber,
Subject: pkix.Name{
CommonName: commonName,
Organization: []string{"ACME Examples, Inc"},
},
}
certificateBytes, err := x509.CreateCertificate(rand.Reader, certificate, caCertificate, &key.PublicKey, caKey)
if err != nil {
//lintignore:R009
panic(err)
}
certificateBlock := &pem.Block{
Bytes: certificateBytes,
Type: pemBlockTypeCertificate,
}
return string(pem.EncodeToMemory(certificateBlock))
}
// TLSRSAX509SelfSignedCACertificatePEM generates a x509 CA certificate PEM string.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: root_certificate_pem = "%[1]s"
func TLSRSAX509SelfSignedCACertificatePEM(keyPem string) string {
keyBlock, _ := pem.Decode([]byte(keyPem))
key, err := x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
publicKeyBytes, err := x509.MarshalPKIXPublicKey(&key.PublicKey)
if err != nil {
//lintignore:R009
panic(err)
}
publicKeyBytesSha1 := sha1.Sum(publicKeyBytes)
serialNumber, err := rand.Int(rand.Reader, tlsX509CertificateSerialNumberLimit)
if err != nil {
//lintignore:R009
panic(err)
}
certificate := &x509.Certificate{
BasicConstraintsValid: true,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
IsCA: true,
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
NotAfter: time.Now().Add(24 * time.Hour), //nolint:gomnd
NotBefore: time.Now(),
SerialNumber: serialNumber,
Subject: pkix.Name{
CommonName: "ACME Root CA",
Organization: []string{"ACME Examples, Inc"},
},
SubjectKeyId: publicKeyBytesSha1[:],
}
certificateBytes, err := x509.CreateCertificate(rand.Reader, certificate, certificate, &key.PublicKey, key)
if err != nil {
//lintignore:R009
panic(err)
}
certificateBlock := &pem.Block{
Bytes: certificateBytes,
Type: pemBlockTypeCertificate,
}
return string(pem.EncodeToMemory(certificateBlock))
}
// TLSRSAX509SelfSignedCACertificateForRolesAnywhereTrustAnchorPEM generates a x509 CA certificate PEM string.
// The CA certificate is suitable for use as an IAM RolesAnywhere Trust Anchor.
// See https://docs.aws.amazon.com/rolesanywhere/latest/userguide/trust-model.html#signature-verification.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: root_certificate_pem = "%[1]s"
func TLSRSAX509SelfSignedCACertificateForRolesAnywhereTrustAnchorPEM(keyPem string) string {
keyBlock, _ := pem.Decode([]byte(keyPem))
key, err := x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
publicKeyBytes, err := x509.MarshalPKIXPublicKey(&key.PublicKey)
if err != nil {
//lintignore:R009
panic(err)
}
publicKeyBytesSha1 := sha1.Sum(publicKeyBytes)
serialNumber, err := rand.Int(rand.Reader, tlsX509CertificateSerialNumberLimit)
if err != nil {
//lintignore:R009
panic(err)
}
certificate := &x509.Certificate{
BasicConstraintsValid: true,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
IsCA: true,
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
NotAfter: time.Now().Add(24 * time.Hour), //nolint:gomnd
NotBefore: time.Now(),
SerialNumber: serialNumber,
SignatureAlgorithm: x509.SHA256WithRSA,
Subject: pkix.Name{
CommonName: "ACME Root CA",
Organization: []string{"ACME Examples, Inc"},
},
SubjectKeyId: publicKeyBytesSha1[:],
}
certificateBytes, err := x509.CreateCertificate(rand.Reader, certificate, certificate, &key.PublicKey, key)
if err != nil {
//lintignore:R009
panic(err)
}
certificateBlock := &pem.Block{
Bytes: certificateBytes,
Type: pemBlockTypeCertificate,
}
return string(pem.EncodeToMemory(certificateBlock))
}
// TLSRSAX509SelfSignedCertificatePEM generates a x509 certificate PEM string.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: private_key_pem = "%[1]s"
func TLSRSAX509SelfSignedCertificatePEM(keyPem, commonName string) string {
keyBlock, _ := pem.Decode([]byte(keyPem))
key, err := x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
if err != nil {
//lintignore:R009
panic(err)
}
serialNumber, err := rand.Int(rand.Reader, tlsX509CertificateSerialNumberLimit)
if err != nil {
//lintignore:R009
panic(err)
}
certificate := &x509.Certificate{
BasicConstraintsValid: true,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
NotAfter: time.Now().Add(24 * time.Hour), //nolint:gomnd
NotBefore: time.Now(),
SerialNumber: serialNumber,
Subject: pkix.Name{
CommonName: commonName,
Organization: []string{"ACME Examples, Inc"},
},
}
certificateBytes, err := x509.CreateCertificate(rand.Reader, certificate, certificate, &key.PublicKey, key)
if err != nil {
//lintignore:R009
panic(err)
}
certificateBlock := &pem.Block{
Bytes: certificateBytes,
Type: pemBlockTypeCertificate,
}
return string(pem.EncodeToMemory(certificateBlock))
}
// TLSRSAX509CertificateRequestPEM generates a x509 certificate request PEM string
// and a RSA private key PEM string.
// Wrap with TLSPEMEscapeNewlines() to allow simple fmt.Sprintf()
// configurations such as: certificate_signing_request_pem = "%[1]s" private_key_pem = "%[2]s"
func TLSRSAX509CertificateRequestPEM(keyBits int, commonName string) (string, string) {
keyBytes, err := rsa.GenerateKey(rand.Reader, keyBits)
if err != nil {
//lintignore:R009
panic(err)
}
csr := x509.CertificateRequest{
Subject: pkix.Name{
CommonName: commonName,
Organization: []string{"ACME Examples, Inc"},
},
SignatureAlgorithm: x509.SHA256WithRSA,
}
csrBytes, err := x509.CreateCertificateRequest(rand.Reader, &csr, keyBytes)
if err != nil {
//lintignore:R009
panic(err)
}
csrBlock := &pem.Block{
Bytes: csrBytes,
Type: pemBlockTypeCertificateRequest,
}
keyBlock := &pem.Block{
Bytes: x509.MarshalPKCS1PrivateKey(keyBytes),
Type: pemBlockTypeRsaPrivateKey,
}
return string(pem.EncodeToMemory(csrBlock)), string(pem.EncodeToMemory(keyBlock))
}
func TLSPEMEscapeNewlines(pem string) string {
return strings.ReplaceAll(pem, "\n", "\\n")
}