func ParseAuthnRequestString(src string) (*AuthnRequest, error) {
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.ParseString(src)
if err != nil {
return nil, errors.New("failed to parse xml: " + err.Error())
}
return constructAuthnRequest(doc)
}
func ExampleSignature_Sign() {
xmlsec.Init()
defer xmlsec.Shutdown()
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.ParseString(`<?xml version="1.0" encoding="UTF-8"?>
<Message><Data>Hello, World!</Data></Message>`)
n, err := doc.DocumentElement()
if err != nil {
log.Printf("DocumentElement failed: %s", err)
return
}
// n is the node where you want your signature to be
// generated under
sig, err := dsig.NewSignature(n, dsig.ExclC14N, dsig.RsaSha1, "")
if err != nil {
log.Printf("failed to create signature: %s", err)
return
}
sig.AddReference(dsig.Sha1, "", "", "")
sig.AddTransform(dsig.Enveloped)
privkey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
log.Printf("failed to generate key: %s", err)
return
}
key, err := crypto.LoadKeyFromRSAPrivateKey(privkey)
if err := sig.Sign(key); err != nil {
log.Printf("failed to sign: %s", err)
return
}
log.Printf("%s", doc.Dump(true))
}
func (v *SignatureVerify) Verify(buf []byte) error {
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.Parse(buf)
if err != nil {
return err
}
defer doc.Free()
mngr, err := crypto.NewKeyManager()
if err != nil {
return err
}
defer mngr.Free()
ctx, err := NewCtx(mngr)
if err != nil {
return err
}
defer ctx.Free()
root, err := doc.DocumentElement()
if err != nil {
return err
}
signode, err := clib.FindSignatureNode(root)
if err != nil {
return err
}
// Create a key manager, load keys from KeyInfo
prefix, err := signode.LookupNamespacePrefix(xmlsec.DSigNs)
if err != nil {
return err
}
if prefix == "" {
prefix = xmlsec.Prefix
}
xpc, err := xpath.NewContext(signode)
if err != nil {
return err
}
xpc.RegisterNS(prefix, xmlsec.Prefix)
iter := xpath.NodeIter(xpc.Find("//" + prefix + ":KeyInfo"))
for iter.Next() {
n := iter.Node()
if err := mngr.GetKey(n); err != nil {
return err
}
}
if key := v.key; key != nil {
cpy, err := key.Copy()
if err != nil {
return err
}
if err := ctx.SetKey(cpy); err != nil {
return err
}
}
return ctx.Verify(doc)
}
func TestXmlSecDSigCtx(t *testing.T) {
xmlsec.Init()
defer xmlsec.Shutdown()
privkey, err := rsa.GenerateKey(rand.Reader, 2048)
if !assert.NoError(t, err, "Generating private key should succeed") {
return
}
privfile, err := writePrivateKey(privkey)
if !assert.NoError(t, err, "Writing private key should succeed") {
return
}
defer os.Remove(privfile)
pubfile, err := writePublicKey(&privkey.PublicKey)
if !assert.NoError(t, err, "Writing public key should succeed") {
return
}
defer os.Remove(pubfile)
src := `<?xml version="1.0" encoding="UTF-8"?>
<!-- XML Security Library example: Simple signature template file for sign1 example. -->
<Envelope xmlns="urn:envelope">
<Data>
Hello, World!
</Data>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
<Reference URI="">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
<DigestValue></DigestValue>
</Reference>
</SignedInfo>
<SignatureValue/>
<KeyInfo>
<KeyName/>
</KeyInfo>
</Signature>
</Envelope>`
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.ParseString(src)
if !assert.NoError(t, err, "Parsing template should succeed") {
return
}
defer doc.Free()
{
ctx, err := dsig.NewCtx(nil)
if !assert.NoError(t, err, "dsig.NewCtx should succeed") {
return
}
defer ctx.Free()
key, err := crypto.LoadKeyFromFile(privfile, crypto.KeyDataFormatPem)
if !assert.NoError(t, err, "Loading private key '%s' should succeed", privfile) {
return
}
ctx.SetKey(key)
if !assert.NoError(t, ctx.Sign(doc), "Sign should succeed") {
return
}
}
signed := doc.String()
t.Logf("%s", signed)
{
ctx, err := dsig.NewCtx(nil)
if !assert.NoError(t, err, "dsig.NewCtx should succeed") {
return
}
defer ctx.Free()
key, err := crypto.LoadKeyFromFile(pubfile, crypto.KeyDataFormatPem)
if !assert.NoError(t, err, "Loading public key '%s' should succeed", pubfile) {
return
}
ctx.SetKey(key)
if !assert.NoError(t, ctx.Verify(doc), "Verify should succeed") {
return
}
}
{
verify, err := dsig.NewSignatureVerify()
if !assert.NoError(t, err, "NewSignatureVerify succeeds") {
return
}
if !assert.NoError(t, verify.LoadKeyFromFile(pubfile, crypto.KeyDataFormatPem), "LoadKeyFromFile succeeds") {
return
}
if !assert.NoError(t, verify.VerifyString(signed), "VerifyString succeeds") {
return
}
if !assert.NoError(t, verify.Verify([]byte(signed)), "Verify succeeds") {
return
}
}
}
func encode(s serializer, key *crypto.Key, compress bool) ([]byte, error) {
xmlstr, err := s.Serialize()
if err != nil {
return nil, err
}
if pdebug.Enabled {
pdebug.Printf("Generated %d bytes of XML", len(xmlstr))
}
if key != nil {
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.ParseString(xmlstr)
if err != nil {
return nil, err
}
root, err := doc.DocumentElement()
if err != nil {
return nil, err
}
// Create a new signature section.
sig, err := dsig.NewSignature(root, dsig.ExclC14N, dsig.RsaSha1, "")
if err := sig.AddReference(dsig.Sha1, "", "", ""); err != nil {
return nil, err
}
if err := sig.AddTransform(dsig.Enveloped); err != nil {
return nil, err
}
if key.HasRsaKey() == nil || key.HasDsaKey() == nil || key.HasEcdsaKey() == nil {
if err := sig.AddKeyValue(); err != nil {
return nil, err
}
}
// If the key is setup using X509, add that node
if key.HasX509() == nil {
if err := sig.AddX509Data(); err != nil {
return nil, err
}
}
if pdebug.Enabled {
pdebug.Printf("Signing using key %p", key)
}
if err := sig.Sign(key); err != nil {
return nil, err
}
xmlstr = doc.Dump(false)
if err != nil {
return nil, err
}
}
if !compress {
return []byte(xmlstr), nil
}
buf := bytes.Buffer{}
w := getFlateWriter()
defer releaseFlateWriter(w)
w.Reset(&buf)
if _, err := io.WriteString(w, xmlstr); err != nil {
return nil, err
}
if err := w.Close(); err != nil {
return nil, err
}
if pdebug.Enabled {
pdebug.Printf("Compressed to %d bytes", buf.Len())
}
ret := make([]byte, b64enc.EncodedLen(buf.Len()))
b64enc.Encode(ret, buf.Bytes())
if pdebug.Enabled {
pdebug.Printf("Encoded into %d bytes of base64", len(ret))
}
return ret, nil
}
func ExampleDSigCtx_Sign() {
xmlsec.Init()
defer xmlsec.Shutdown()
ctx, err := dsig.NewCtx(nil)
if err != nil {
log.Printf("Failed to create signature context: %s", err)
return
}
defer ctx.Free()
// This stuff isn't necessary if you already have a key file
privkey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
log.Printf("Failed to generate private key: %s", err)
return
}
var pemkey = &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(privkey),
}
pemfile, err := ioutil.TempFile("", "xmlsec-test-")
if err != nil {
log.Printf("Failed to create temporary pemfile")
return
}
defer os.Remove(pemfile.Name())
defer pemfile.Close()
if err := pem.Encode(pemfile, pemkey); err != nil {
log.Printf("Failed to write to pemfile: %s", err)
return
}
if err := pemfile.Sync(); err != nil {
log.Printf("Failed to sync pemfile: %s", err)
return
}
key, err := crypto.LoadKeyFromFile(pemfile.Name(), crypto.KeyDataFormatPem)
if err != nil {
log.Printf("Faild to load key: %s", err)
return
}
ctx.SetKey(key)
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.ParseString(`<?xml version="1.0" encoding="UTF-8"?>
<!-- XML Security Library example: Simple signature template file for sign1 example. -->
<Envelope xmlns="urn:envelope">
<Data>
Hello, World!
</Data>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
<Reference URI="">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
<DigestValue></DigestValue>
</Reference>
</SignedInfo>
<SignatureValue/>
<KeyInfo>
<KeyName/>
</KeyInfo>
</Signature>
</Envelope>`)
if err != nil {
log.Printf("Failed to parse source XML: %s", err)
return
}
defer doc.Free()
if err := ctx.Sign(doc); err != nil {
log.Printf("Failed to sign document: %s", err)
return
}
log.Printf("%s", doc.Dump(true))
}
func TestAuthnRequest(t *testing.T) {
xmlsec.Init()
defer xmlsec.Shutdown()
ar := NewAuthnRequest()
ar.ID = "809707f0030a5d00620c9d9df97f627afe9dcc24"
ar.Version = "2.0"
ar.IssueInstant = time.Now()
ar.Issuer = "http://sp.example.com/metadata"
ar.Destination = "http://idp.example.com/sso"
ar.ProviderName = "FooProvider"
ar.ProtocolBinding = binding.HTTPPost
ar.AssertionConsumerServiceURL = "http://sp.example.com/acs"
ar.NameIDPolicy = NewNameIDPolicy(nameid.EmailAddress, true)
ar.RequestedAuthnContext = NewRequestedAuthnContext(
"exact",
"urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport",
)
xmlstr, err := ar.Serialize()
if !assert.NoError(t, err, "Serialize() succeeds") {
return
}
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
c14ndoc, err := p.ParseString(xmlstr)
if !assert.NoError(t, err, "Parse C14N XML doc succeeds") {
return
}
defer c14ndoc.Free()
root, err := c14ndoc.DocumentElement()
if !assert.NoError(t, err, "DocumentElement succeeds") {
return
}
privkey, err := rsa.GenerateKey(rand.Reader, 2048)
if !assert.NoError(t, err, "GenerateKey succeeds") {
return
}
signer, err := dsig.NewSignature(root, dsig.ExclC14N, dsig.RsaSha1, "urn:oasis:names:tc:SAML:2.0:protocol:AuthnRequest")
if !assert.NoError(t, err, "dsig.NewSignature succeeds") {
return
}
if !assert.NoError(t, signer.AddReference(dsig.Sha1, "", "", ""), "AddReference succeeds") {
return
}
if !assert.NoError(t, signer.AddTransform(dsig.Enveloped), "AddTransform succeeds") {
return
}
if !assert.NoError(t, signer.AddKeyValue(), "AddKeyValue succeeds") {
return
}
key, err := crypto.LoadKeyFromRSAPrivateKey(privkey)
if !assert.NoError(t, err, "Load key from RSA private key succeeds") {
return
}
if !assert.NoError(t, signer.Sign(key), "Sign succeeds") {
return
}
t.Logf("%s", c14ndoc.Dump(true))
}
func TestAssertion_XML(t *testing.T) {
a := Assertion{
Conditions: Conditions{
NotBefore: time.Now(),
NotOnOrAfter: time.Now(),
},
Version: "2.0",
ID: "b07b804c-7c29-ea16-7300-4f3d6f7928ac",
IssueInstant: time.Now(),
Issuer: "https://idp.example.org/SAML2",
Subject: Subject{
NameID: NameID{
Format: nameid.Transient,
Value: "3f7b3dcf-1674-4ecd-92c8-1544f346baf8",
},
SubjectConfirmation: SubjectConfirmation{
InResponseTo: "aaf23196-1773-2113-474a-fe114412ab72",
Recipient: "https://sp.example.com/SAML2/SSO/POST",
NotOnOrAfter: time.Now(),
},
},
AuthnStatement: AuthnStatement{
AuthnInstant: time.Now(),
SessionIndex: "b07b804c-7c29-ea16-7300-4f3d6f7928ac",
AuthnContext: AuthnContext{
AuthnContextClassRef: PasswordProtectedTransport,
},
},
}
a.Conditions.AddAudience("https://sp.example.com/SAML2")
a.AddAttribute(Attribute{
Attrs: map[string]string{
"xmlns:" + ns.X500.Prefix: ns.X500.URI,
ns.X500.AddPrefix("Encoding"): "LDAP",
"NameFormat": ns.NameFormatURI,
},
Name: "urn:oid:1.3.6.1.4.1.5923.1.1.1.1",
FriendlyName: "eduPersonAffiliation",
Values: []AttributeValue{
AttributeValue{
Type: ns.XMLSchema.AddPrefix("string"),
Value: "member",
},
AttributeValue{
Type: ns.XMLSchema.AddPrefix("string"),
Value: "staff",
},
},
})
xmlstr, err := a.Serialize()
if !assert.NoError(t, err, "Serialize() succeeds") {
return
}
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
c14ndoc, err := p.ParseString(xmlstr)
if !assert.NoError(t, err, "Parse C14N XML doc succeeds") {
return
}
defer c14ndoc.Free()
}
func TestResponse(t *testing.T) {
xmlsec.Init()
defer xmlsec.Shutdown()
res := NewResponse()
res.Issuer = "http://idp.example.com/metadata"
res.Destination = "http://sp.example.com/sso"
// Run serialize once so we can check for empty assertion
xmlstr, err := res.Serialize()
if !assert.NoError(t, err, "Serialize() succeeds") {
return
}
if !assert.NotContains(t, xmlstr, "<Assertion", "Should not contain assertion") {
return
}
res.Assertion = NewAssertion()
res.Assertion.Conditions.AddAudience("sp.example.com/sso")
xmlstr, err = res.Serialize()
if !assert.NoError(t, err, "Serialize() succeeds") {
return
}
if !assert.Contains(t, xmlstr, "<saml:Audience>sp.example.com/sso", "<saml:Audience> exists") {
return
}
p := parser.New(parser.XMLParseDTDLoad | parser.XMLParseDTDAttr | parser.XMLParseNoEnt)
doc, err := p.ParseString(xmlstr)
if !assert.NoError(t, err, "Parse XML doc succeeds") {
return
}
defer doc.Free()
c14nxml, err := dom.C14NSerialize{Mode: dom.C14NExclusive1_0}.Serialize(doc)
if !assert.NoError(t, err, "C14NSerialize.Serialize succeeds") {
return
}
c14ndoc, err := p.ParseString(c14nxml)
if !assert.NoError(t, err, "Parse C14N doc succeeds") {
return
}
defer c14ndoc.Free()
root, err := c14ndoc.DocumentElement()
if !assert.NoError(t, err, "DocumentElement succeeds") {
return
}
privkey, err := rsa.GenerateKey(rand.Reader, 2048)
if !assert.NoError(t, err, "GenerateKey succeeds") {
return
}
signer, err := dsig.NewSignature(root, dsig.ExclC14N, dsig.RsaSha1, "urn:oasis:names:tc:SAML:2.0:protocol:Response")
if !assert.NoError(t, err, "dsig.NewSignature succeeds") {
return
}
if !assert.NoError(t, signer.AddReference(dsig.Sha1, "", "", ""), "AddReference succeeds") {
return
}
if !assert.NoError(t, signer.AddTransform(dsig.Enveloped), "AddTransform succeeds") {
return
}
if !assert.NoError(t, signer.AddKeyValue(), "AddKeyValue succeeds") {
return
}
key, err := crypto.LoadKeyFromRSAPrivateKey(privkey)
if !assert.NoError(t, err, "Load key from RSA private key succeeds") {
return
}
if !assert.NoError(t, signer.Sign(key), "Sign succeeds") {
t.Logf("%s", c14ndoc.Dump(true))
return
}
t.Logf("%s", c14ndoc.Dump(true))
}