@spec parse(String.t()) :: {:ok, xml_node()} | {:error, Saxy.ParseError.t()}

Parses an XML string to return a tuple representing the XML node.

Examples

Well-formed XMLs are successfully parsed

iex> SimpleXml.parse(~S{<foo attr1="value1" attr2="value2">body</foo>})
{:ok, {"foo", [{"attr1", "value1"}, {"attr2", "value2"}], ["body"]}}

Malformed XMLs result in an error

iex> SimpleXml.parse("<foo")
{:error, %Saxy.ParseError{reason: {:token, :name_start_char}, binary: "<foo", position: 4}}

@spec verify(xml_node(), public_key()) :: :ok | {:error, any()}

Verifies the signature contained within the XML document represented by the given node. For the sake of simplicity of implementation, this function expects the following to be true for the given XML document:

• Signature conforms to the XMLDSIG-CORE1 spec
• Canonicalization method is XML-ENC-C14N
• InclusiveNamespaces PrefixList is supported [https://www.w3.org/TR/xml-exc-c14n/#def-InclusiveNamespaces-PrefixList]
• Transformation method includes XMLDSIG-enveloped-signature
• Digest method is XMLENC-SHA256 or XMLDSIG-SHA1
• Signature method is XMLDSIG-SHA256 or XMLDSIG-RSA-SHA1

Arguments:

• node: The xml_node corresponding to the document or portion of the document to be verified
• public_key: The key to use for verifying the signature. Value matches the key argument given to :pubic_key.verify/4. Please see document here for further details.

Examples

Verifies a valid signature via the given public key

iex> cert_der = ~S(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)
iex> {:ok, cert} = cert_der |> Base.decode64!() |> X509.Certificate.from_der()
iex> public_key = X509.Certificate.public_key(cert)
iex> saml_response = "<?xml version="1.0" encoding="UTF-8"?><saml2p:Response Destination="https://local.mbx.com:4001/auth/ahead/sso" ID="id27784047887591772815846703" IssueInstant="2023-07-10T13:40:29.658Z" Version="2.0" xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">http://www.okta.com/exka5ha6bknY6Okd85d7</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#id27784047887591772815846703"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>msXV7poKgVJ15JasyNMVwEECj0rN8ecyGToouXWz/Gk=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>g3WHivBGhPsMa030h9BUIAWaErAWd28uDjBUHROQ+ehKwjqxkCPlc4ZUwrF+gnFmw2lt81nppo5U0ESmn/AGJ60J20ZxVRgjsZxK1AhVqr40u0wA6f6jCJiJWnbqIGWXDXyikWO0/4rqOdD9wP8Dw2Pmio2+vMsNIlpNyu2yoAz2usln/vFeSYtY5mK095x7wUcHaW0ocZpOULDDjSb0qGN8V7WgJvFhHPqDbNpG11RBcZsEqFulaGzv2Puu9hDyu+Z0HNqT0+3F0I1TinMJG33Pqs2RsokCZLxz2GB4wjdpNTRNM7J7ih7Ly7f9kdOMaLm+6c917zn3bJP7V9Gb9g==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEG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</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2p:Status xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2p:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/></saml2p:Status><saml2:Assertion ID="id27784047887784728211931895" IssueInstant="2023-07-10T13:40:29.658Z" Version="2.0" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">http://www.okta.com/exka5ha6bknY6Okd85d7</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#id27784047887784728211931895"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>6ovmwpV6M4lwACpFgKjVm+6VySKttObU1vckofUVkfA=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>PthKpmSci797DDLoMtuMBG68/o6ep1RIlYGDaETzCQ5kFTvd71bwEjc9ivQWeSuG3U8iC6Lt/7HfXJTT0Kyi/SiZkzHfIulIJm5PNofzeuuuEAYr0PhyJbvBGRN8EatPL0V3lvXO1OXhw1SimbS0dGhBGB3Z/4Jmj3A0gFnlyNJN/78xX+bPuxBKxQXpV9M10NrKEF+o75MP7nn19nJ3M6lowHAGgtaDX9u3Fa2w/8xAqFNt64wZ0DPaimAitDPJvtH/uU7y4rmeR+tqzjvsGGpm83c5SswWDgZxjPCIWGETZUWGCDponVW7TGBn44xoVYPHDE+IqbrX7TUr2HQhPg==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEG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</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2:Subject xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified">dj.jain</saml2:NameID><saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml2:SubjectConfirmationData NotOnOrAfter="2023-07-10T13:45:29.659Z" Recipient="https://local.mbx.com:4001/auth/ahead/sso"/></saml2:SubjectConfirmation></saml2:Subject><saml2:Conditions NotBefore="2023-07-10T13:35:29.659Z" NotOnOrAfter="2023-07-10T13:45:29.659Z" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:AudienceRestriction><saml2:Audience>xqO52CNELd0hVB9vaX1d_dcwuYAxGUSr</saml2:Audience></saml2:AudienceRestriction></saml2:Conditions><saml2:AuthnStatement AuthnInstant="2023-07-10T13:40:29.658Z" SessionIndex="id1688996429657.1145032012" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:AuthnContext><saml2:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml2:AuthnContextClassRef></saml2:AuthnContext></saml2:AuthnStatement></saml2:Assertion></saml2p:Response>"
iex> {:ok, saml_body} = saml_response |> Base.decode64()
iex> {:ok, root} = SimpleXml.parse(saml_body)
iex> SimpleXml.verify(root, public_key)
:ok

Verifies a valid signature that relies on InclusiveNamespaces

iex> cert_der = ~S(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)
iex> {:ok, cert} = cert_der |> Base.decode64!() |> X509.Certificate.from_der()
iex> public_key = X509.Certificate.public_key(cert)
iex> saml_response = "<?xml version="1.0" encoding="UTF-8"?><saml2p:Response xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol" Destination="https://local.mbx.com:4001/auth/saml/sso" ID="_51c65c8e3edcc417f7640bd905b43e201728933141669" IssueInstant="2024-10-14T19:12:21.669Z" Version="2.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><saml2:Issuer xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion" Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">https://ahead.my.salesforce.com</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#_51c65c8e3edcc417f7640bd905b43e201728933141669"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"><ec:InclusiveNamespaces xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="xsd"/></ds:Transform></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>Ma/VCfqJJ+HNx94Ik2CBiIOZVjUT9ZONMi9SRFzXxiY=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>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</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIGijCCBHKgAwIBAgIOAY/lpwHuAAAAAEDxjFgwDQYJKoZIhvcNAQELBQAwgYUxHTAbBgNVBAMM
FFBob2VuaXhfU2VsZlNpZ25DZXJ0MRgwFgYDVQQLDA8wMERhbTAwMDAwSXlwamYxFzAVBgNVBAoM
DlNhbGVzZm9yY2UuY29tMRYwFAYDVQQHDA1TYW4gRnJhbmNpc2NvMQswCQYDVQQIDAJDQTEMMAoG
A1UEBhMDVVNBMB4XDTI0MDYwNDIzNDc1OFoXDTI2MDYwNDEyMDAwMFowgYUxHTAbBgNVBAMMFFBo
b2VuaXhfU2VsZlNpZ25DZXJ0MRgwFgYDVQQLDA8wMERhbTAwMDAwSXlwamYxFzAVBgNVBAoMDlNh
bGVzZm9yY2UuY29tMRYwFAYDVQQHDA1TYW4gRnJhbmNpc2NvMQswCQYDVQQIDAJDQTEMMAoGA1UE
BhMDVVNBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAlnuuqN8tgcsRGI6n4A08F+on
729e4dOeevIoPdm1GsoFLXwUL+EB6PzbhpfGCzDVvbVoQLegMeRJ8PR0g01R6RKDnl9vVyBsLiCa
lwZft8MGVjeN2KQYdlpHGx3eerp59wpI2Hy6i+gset8tTDkfhqPBnaITKLmnanY08QQHqNXCtF91
u3yrgFASYfBZKzA6zFj4rB77SKeJRKtQygaLZQwrEoWjBj6C2AdsmfJ4RdTUIAzgtp6jmuB/c7Ft
eWnhU85DoPSfQWyKqd7KFSxfwc2u/Si/j6N4vhgZaHGleWY6N2mhPem92M9t0f/p7vpL7xt4xxNP
NqzBdg8rniIKk1KfaB0DjlVxuukjtQT+/vnlvBg1ng8U+HY4aW1zDfhKwLrqb1Z+neqcvWgVh55I
suTZewFH9vd69KTc9cC7Nr1byg8qY1vLG6yWRVK7WTSZvztkkE410GGh6jf7ngeojWd+Ob2SwOSg
TC6yJXCttUMs8+GKUx6+aDWbFPjyyoiHrKqAqnHULvRYqWKnQKkGZmeaYaJlMHvR8OWzzlzNsKvl
YvupoJuqNM2SpIC0Jq27kiKWa/w4FMlBJqR+1D7toa8etyvigUCLSs48NF6byi0Vj7LCLIstrzBn
6y0p49tDzKYe6LEYwE5vyAu37BP1MSmWdBJvz3pQiQf5MiG4C78CAwEAAaOB9TCB8jAdBgNVHQ4E
FgQUsshKdTosqMyajcq/YJ5fq/el19owDwYDVR0TAQH/BAUwAwEB/zCBvwYDVR0jBIG3MIG0gBSy
yEp1OiyozJqNyr9gnl+r96XX2qGBi6SBiDCBhTEdMBsGA1UEAwwUUGhvZW5peF9TZWxmU2lnbkNl
cnQxGDAWBgNVBAsMDzAwRGFtMDAwMDBJeXBqZjEXMBUGA1UECgwOU2FsZXNmb3JjZS5jb20xFjAU
BgNVBAcMDVNhbiBGcmFuY2lzY28xCzAJBgNVBAgMAkNBMQwwCgYDVQQGEwNVU0GCDgGP5acB7gAA
AABA8YxYMA0GCSqGSIb3DQEBCwUAA4ICAQAPH/FsdOT3c0WQIqRjVL6G3tEhWTt/bW+tg8n+j8Ij
rpmPhIR8SIlCwqSkO8h0RkI4fYpFlntPBKDEVzAx3zy5WL+TJlI3E2tcQBQD1EZfcW+lO+fwkH4V
IWHv1o2zheJnBEAPKrXjL67ks7NqFbC5kZ1KT39Ad8eIWH2OZ97wYNWmWtKaqV69YjuqXAcyWu7M
yZ/jLLI2hZFDjwxQopFueE032jPVFF3Kqb99DlBDNkIZRUwAxFOZbYeIcrw+ZIz0n+Uh59wkHA4i
bpZQjxi7BlpKn2eTLGTN9G4v1DNRl2cqlLrncP7n1iNhmXeogwJw+uJEAVZNfoMN3iHFtKHuU2zX
JZ8wzfaudx1Qo/PAvv1SDC5okHfYp/gNekq8jGcQKEP0Q57JeVDYSEdwGZeaH77nqZPo3CW6MBAw
vEzu8encALD/FZS6QBxmXEmP3z6VX+9R5WZ0C1EmWpS/9/oaVEvF+UPrQj8Wq2FbOxmuBYQ8paOk
Fje4UG1+rrwqfAMwpyN/E/UvDFS4BkjDe/GBQePG20eiWtKU6CktL3Zrm4lJUbTNt7/3yeoS5Ww4
YM3v7nv3PTSCZ6LG63poodhgvgMv0C7oEXIHo8+lYziGKVxwWBhZvHVkc789wBG40Okn/+DMu2Uf
Gf641Y5xC9mMVIEUxv1B4xLxibvu7PkzEQ==</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2p:Status><saml2p:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/></saml2p:Status><saml2:Assertion xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion" ID="_c9894fa701f513c6fa53581d719001131728933141669" IssueInstant="2024-10-14T19:12:21.669Z" Version="2.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">https://ahead.my.salesforce.com</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#_c9894fa701f513c6fa53581d719001131728933141669"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"><ec:InclusiveNamespaces xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="xsd"/></ds:Transform></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>bvi9WfLG7LKnxe3rv7H0SYgnp0jDQoZMyfemJq2MSO8=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>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</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIGijCCBHKgAwIBAgIOAY/lpwHuAAAAAEDxjFgwDQYJKoZIhvcNAQELBQAwgYUxHTAbBgNVBAMM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</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2:Subject><saml2:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress">dj.jain.admin@ahead.com.rsiep</saml2:NameID><saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml2:SubjectConfirmationData NotOnOrAfter="2024-10-14T19:17:21.669Z" Recipient="https://local.mbx.com:4001/auth/saml/sso"/></saml2:SubjectConfirmation></saml2:Subject><saml2:Conditions NotBefore="2024-10-14T19:11:51.669Z" NotOnOrAfter="2024-10-14T19:17:21.669Z"><saml2:AudienceRestriction><saml2:Audience>https://local.mbx.com:3001/mMzm2ZDATLEMPWaeqPdfHfitZRY</saml2:Audience></saml2:AudienceRestriction></saml2:Conditions><saml2:AuthnStatement AuthnInstant="2024-10-14T19:12:21.669Z"><saml2:AuthnContext><saml2:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:unspecified</saml2:AuthnContextClassRef></saml2:AuthnContext></saml2:AuthnStatement><saml2:AttributeStatement><saml2:Attribute Name="userId" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified"><saml2:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xsd:anyType">005Wr0000050Mxj</saml2:AttributeValue></saml2:Attribute><saml2:Attribute Name="username" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified"><saml2:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xsd:anyType">dj.jain.admin@ahead.com.rsiep</saml2:AttributeValue></saml2:Attribute><saml2:Attribute Name="email" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified"><saml2:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xsd:anyType">dj.jain@ahead.com</saml2:AttributeValue></saml2:Attribute><saml2:Attribute Name="is_portal_user" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified"><saml2:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xsd:anyType">false</saml2:AttributeValue></saml2:Attribute></saml2:AttributeStatement></saml2:Assertion></saml2p:Response>"
iex> {:ok, saml_body} = saml_response |> Base.decode64()
iex> {:ok, root} = SimpleXml.parse(saml_body)
iex> SimpleXml.verify(root, public_key)
:ok

Verifies a valid signature using namespace without prefix

iex> cert_der = ~S(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)
iex> {:ok, cert} = cert_der |> Base.decode64!() |> X509.Certificate.from_der()
iex> public_key = X509.Certificate.public_key(cert)
iex> saml_response = "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"
iex> {:ok, saml_body} = saml_response |> Base.decode64()
iex> {:ok, root} = SimpleXml.parse(saml_body)
iex> {:ok, assertion_node} = SimpleXml.XmlNode.first_child(root, ~r/.*:?Assertion$/)
iex> SimpleXml.verify(assertion_node, public_key)
:ok

Verifies a valid signature using SHA1

iex> cert_der = "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"
iex> {:ok, cert} = cert_der |> Base.decode64!() |> X509.Certificate.from_der()
iex> public_key = X509.Certificate.public_key(cert)
iex> saml_response = "PHNhbWxwOlJlc3BvbnNlIHhtbG5zOnNhbWw9InVybjpvYXNpczpuYW1lczp0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\r\nbDpBc3NlcnRpb24+PC9zYW1scDpSZXNwb25zZT4KCg==\r\n"
iex> {:ok, saml_body} = saml_response |> Base.decode64(ignore: :whitespace)
iex> {:ok, root} = SimpleXml.parse(saml_body)
iex> {:ok, assertion_node} = SimpleXml.XmlNode.first_child(root, ~r/.*:?Assertion$/)
iex> SimpleXml.verify(assertion_node, public_key)
:ok

Verification fails if the digest doesn't match the expected value

iex> cert_der = ~S(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)
iex> {:ok, cert} = cert_der |> Base.decode64!() |> X509.Certificate.from_der()
iex> public_key = X509.Certificate.public_key(cert)
iex> saml_response = "<?xml version="1.0" encoding="UTF-8"?><saml2p:Response Destination="https://local.mbx.com:4001/auth/ahead/sso" ID="id27784047887591772815846703" IssueInstant="2023-07-10T13:40:29.658Z" Version="2.0" xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">http://www.okta.com/exka5ha6bknY6Okd85d7</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#id27784047887591772815846703"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>BAD_DIGEST</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>g3WHivBGhPsMa030h9BUIAWaErAWd28uDjBUHROQ+ehKwjqxkCPlc4ZUwrF+gnFmw2lt81nppo5U0ESmn/AGJ60J20ZxVRgjsZxK1AhVqr40u0wA6f6jCJiJWnbqIGWXDXyikWO0/4rqOdD9wP8Dw2Pmio2+vMsNIlpNyu2yoAz2usln/vFeSYtY5mK095x7wUcHaW0ocZpOULDDjSb0qGN8V7WgJvFhHPqDbNpG11RBcZsEqFulaGzv2Puu9hDyu+Z0HNqT0+3F0I1TinMJG33Pqs2RsokCZLxz2GB4wjdpNTRNM7J7ih7Ly7f9kdOMaLm+6c917zn3bJP7V9Gb9g==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEG
A1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzENMAsGA1UECgwET2t0YTEU
MBIGA1UECwwLU1NPUHJvdmlkZXIxFTATBgNVBAMMDGRldi00NTM0OTkwNjEcMBoGCSqGSIb3DQEJ
ARYNaW5mb0Bva3RhLmNvbTAeFw0yMzA2MjcxMTE3NTlaFw0zMzA2MjcxMTE4NTlaMIGUMQswCQYD
VQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzENMAsG
A1UECgwET2t0YTEUMBIGA1UECwwLU1NPUHJvdmlkZXIxFTATBgNVBAMMDGRldi00NTM0OTkwNjEc
MBoGCSqGSIb3DQEJARYNaW5mb0Bva3RhLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
ggEBALTE7IRG+oQZBASQ7DY3yeTrwABdI2BgG2FXKSkTPk9enMwtyUyDXCOteOg18+//MA2UTvgS
I+n0fiAh7Bi7cxpimnOaj/kcgvpdn+5wpEfSIDKAeEg9VIQf0fz/ks4XkrNxRh8ba6Z/ypOVR2TL
ozu8v6sjGCiqHSoiPl78KINHx9jMB3QGdTHRxsTzwFPGcUEvO7XvjxxMN9FLZdHkwtA6cZXDbHlA
v+o4EbLIRqXFc3vF5rs3Fz+cgqZ3HVGm90TFFcbPbx/eKcvzyHdYt8P5pi364mijt9NKtNV9F9Vd
Pz+Gp/rxlw0i/IWxV0/vBrW10HPd42krsOgHibxBYg8CAwEAATANBgkqhkiG9w0BAQsFAAOCAQEA
rpYzZEoYcRo3YF7Ny4gdc8ODSlPPKIdLvwhUTGbPdzJU2ifxzE/KeTHGmFpjpakjDmmWsr2j9FGU
/9U0SjqPmJHP5gYbjmz+tD3jeaEkIBDZpcYc+MveQaA7uDMILA2OUhHuFu0UJVjGxl2EIpxivC+I
J0RpBS5AERT6V91Fqv2Ylwb5sklhoXGDx9s+l+Ud1MLaewIvnUHdIRtC02bvlhjwt0pnICDtHMik
vOiTXjTBJgl7X9Q51Gm636q9pJVjS1T0gR3cNt9JJE/foDdOK8JozRFtF4j14xegXLt7BVBIXuSO
K6P1c09mCPQ1VJbcj01S1zfrvZ+RZvrxr/0aXQ==</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2p:Status xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2p:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/></saml2p:Status><saml2:Assertion ID="id27784047887784728211931895" IssueInstant="2023-07-10T13:40:29.658Z" Version="2.0" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">http://www.okta.com/exka5ha6bknY6Okd85d7</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#id27784047887784728211931895"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>6ovmwpV6M4lwACpFgKjVm+6VySKttObU1vckofUVkfA=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>PthKpmSci797DDLoMtuMBG68/o6ep1RIlYGDaETzCQ5kFTvd71bwEjc9ivQWeSuG3U8iC6Lt/7HfXJTT0Kyi/SiZkzHfIulIJm5PNofzeuuuEAYr0PhyJbvBGRN8EatPL0V3lvXO1OXhw1SimbS0dGhBGB3Z/4Jmj3A0gFnlyNJN/78xX+bPuxBKxQXpV9M10NrKEF+o75MP7nn19nJ3M6lowHAGgtaDX9u3Fa2w/8xAqFNt64wZ0DPaimAitDPJvtH/uU7y4rmeR+tqzjvsGGpm83c5SswWDgZxjPCIWGETZUWGCDponVW7TGBn44xoVYPHDE+IqbrX7TUr2HQhPg==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEG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</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2:Subject xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified">dj.jain</saml2:NameID><saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml2:SubjectConfirmationData NotOnOrAfter="2023-07-10T13:45:29.659Z" Recipient="https://local.mbx.com:4001/auth/ahead/sso"/></saml2:SubjectConfirmation></saml2:Subject><saml2:Conditions NotBefore="2023-07-10T13:35:29.659Z" NotOnOrAfter="2023-07-10T13:45:29.659Z" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:AudienceRestriction><saml2:Audience>xqO52CNELd0hVB9vaX1d_dcwuYAxGUSr</saml2:Audience></saml2:AudienceRestriction></saml2:Conditions><saml2:AuthnStatement AuthnInstant="2023-07-10T13:40:29.658Z" SessionIndex="id1688996429657.1145032012" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:AuthnContext><saml2:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml2:AuthnContextClassRef></saml2:AuthnContext></saml2:AuthnStatement></saml2:Assertion></saml2p:Response>"
iex> {:ok, saml_body} = saml_response |> Base.decode64()
iex> {:ok, root} = SimpleXml.parse(saml_body)
iex> SimpleXml.verify(root, public_key)
{:error, :digest_verification_failed}

Verification fails if the signature doesn't match the expected value

iex> cert_der = ~S(MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzENMAsGA1UECgwET2t0YTEUMBIGA1UECwwLU1NPUHJvdmlkZXIxFTATBgNVBAMMDGRldi00NTM0OTkwNjEcMBoGCSqGSIb3DQEJARYNaW5mb0Bva3RhLmNvbTAeFw0yMzA2MjcxMTE3NTlaFw0zMzA2MjcxMTE4NTlaMIGUMQswCQYDVQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzENMAsGA1UECgwET2t0YTEUMBIGA1UECwwLU1NPUHJvdmlkZXIxFTATBgNVBAMMDGRldi00NTM0OTkwNjEcMBoGCSqGSIb3DQEJARYNaW5mb0Bva3RhLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALTE7IRG+oQZBASQ7DY3yeTrwABdI2BgG2FXKSkTPk9enMwtyUyDXCOteOg18+//MA2UTvgSI+n0fiAh7Bi7cxpimnOaj/kcgvpdn+5wpEfSIDKAeEg9VIQf0fz/ks4XkrNxRh8ba6Z/ypOVR2TLozu8v6sjGCiqHSoiPl78KINHx9jMB3QGdTHRxsTzwFPGcUEvO7XvjxxMN9FLZdHkwtA6cZXDbHlAv+o4EbLIRqXFc3vF5rs3Fz+cgqZ3HVGm90TFFcbPbx/eKcvzyHdYt8P5pi364mijt9NKtNV9F9VdPz+Gp/rxlw0i/IWxV0/vBrW10HPd42krsOgHibxBYg8CAwEAATANBgkqhkiG9w0BAQsFAAOCAQEArpYzZEoYcRo3YF7Ny4gdc8ODSlPPKIdLvwhUTGbPdzJU2ifxzE/KeTHGmFpjpakjDmmWsr2j9FGU/9U0SjqPmJHP5gYbjmz+tD3jeaEkIBDZpcYc+MveQaA7uDMILA2OUhHuFu0UJVjGxl2EIpxivC+IJ0RpBS5AERT6V91Fqv2Ylwb5sklhoXGDx9s+l+Ud1MLaewIvnUHdIRtC02bvlhjwt0pnICDtHMikvOiTXjTBJgl7X9Q51Gm636q9pJVjS1T0gR3cNt9JJE/foDdOK8JozRFtF4j14xegXLt7BVBIXuSOK6P1c09mCPQ1VJbcj01S1zfrvZ+RZvrxr/0aXQ==)
iex> {:ok, cert} = cert_der |> Base.decode64!() |> X509.Certificate.from_der()
iex> public_key = X509.Certificate.public_key(cert)
iex> saml_response = "<?xml version="1.0" encoding="UTF-8"?><saml2p:Response Destination="https://local.mbx.com:4001/auth/ahead/sso" ID="id27784047887591772815846703" IssueInstant="2023-07-10T13:40:29.658Z" Version="2.0" xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">http://www.okta.com/exka5ha6bknY6Okd85d7</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#id27784047887591772815846703"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>msXV7poKgVJ15JasyNMVwEECj0rN8ecyGToouXWz/Gk=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>QkFEX1NJR05BVFVSRQ==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEG
A1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzENMAsGA1UECgwET2t0YTEU
MBIGA1UECwwLU1NPUHJvdmlkZXIxFTATBgNVBAMMDGRldi00NTM0OTkwNjEcMBoGCSqGSIb3DQEJ
ARYNaW5mb0Bva3RhLmNvbTAeFw0yMzA2MjcxMTE3NTlaFw0zMzA2MjcxMTE4NTlaMIGUMQswCQYD
VQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzENMAsG
A1UECgwET2t0YTEUMBIGA1UECwwLU1NPUHJvdmlkZXIxFTATBgNVBAMMDGRldi00NTM0OTkwNjEc
MBoGCSqGSIb3DQEJARYNaW5mb0Bva3RhLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
ggEBALTE7IRG+oQZBASQ7DY3yeTrwABdI2BgG2FXKSkTPk9enMwtyUyDXCOteOg18+//MA2UTvgS
I+n0fiAh7Bi7cxpimnOaj/kcgvpdn+5wpEfSIDKAeEg9VIQf0fz/ks4XkrNxRh8ba6Z/ypOVR2TL
ozu8v6sjGCiqHSoiPl78KINHx9jMB3QGdTHRxsTzwFPGcUEvO7XvjxxMN9FLZdHkwtA6cZXDbHlA
v+o4EbLIRqXFc3vF5rs3Fz+cgqZ3HVGm90TFFcbPbx/eKcvzyHdYt8P5pi364mijt9NKtNV9F9Vd
Pz+Gp/rxlw0i/IWxV0/vBrW10HPd42krsOgHibxBYg8CAwEAATANBgkqhkiG9w0BAQsFAAOCAQEA
rpYzZEoYcRo3YF7Ny4gdc8ODSlPPKIdLvwhUTGbPdzJU2ifxzE/KeTHGmFpjpakjDmmWsr2j9FGU
/9U0SjqPmJHP5gYbjmz+tD3jeaEkIBDZpcYc+MveQaA7uDMILA2OUhHuFu0UJVjGxl2EIpxivC+I
J0RpBS5AERT6V91Fqv2Ylwb5sklhoXGDx9s+l+Ud1MLaewIvnUHdIRtC02bvlhjwt0pnICDtHMik
vOiTXjTBJgl7X9Q51Gm636q9pJVjS1T0gR3cNt9JJE/foDdOK8JozRFtF4j14xegXLt7BVBIXuSO
K6P1c09mCPQ1VJbcj01S1zfrvZ+RZvrxr/0aXQ==</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2p:Status xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"><saml2p:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/></saml2p:Status><saml2:Assertion ID="id27784047887784728211931895" IssueInstant="2023-07-10T13:40:29.658Z" Version="2.0" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">http://www.okta.com/exka5ha6bknY6Okd85d7</saml2:Issuer><ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><ds:Reference URI="#id27784047887784728211931895"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>6ovmwpV6M4lwACpFgKjVm+6VySKttObU1vckofUVkfA=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>PthKpmSci797DDLoMtuMBG68/o6ep1RIlYGDaETzCQ5kFTvd71bwEjc9ivQWeSuG3U8iC6Lt/7HfXJTT0Kyi/SiZkzHfIulIJm5PNofzeuuuEAYr0PhyJbvBGRN8EatPL0V3lvXO1OXhw1SimbS0dGhBGB3Z/4Jmj3A0gFnlyNJN/78xX+bPuxBKxQXpV9M10NrKEF+o75MP7nn19nJ3M6lowHAGgtaDX9u3Fa2w/8xAqFNt64wZ0DPaimAitDPJvtH/uU7y4rmeR+tqzjvsGGpm83c5SswWDgZxjPCIWGETZUWGCDponVW7TGBn44xoVYPHDE+IqbrX7TUr2HQhPg==</ds:SignatureValue><ds:KeyInfo><ds:X509Data><ds:X509Certificate>MIIDqDCCApCgAwIBAgIGAYj8lAYkMA0GCSqGSIb3DQEBCwUAMIGUMQswCQYDVQQGEwJVUzETMBEG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</ds:X509Certificate></ds:X509Data></ds:KeyInfo></ds:Signature><saml2:Subject xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified">dj.jain</saml2:NameID><saml2:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml2:SubjectConfirmationData NotOnOrAfter="2023-07-10T13:45:29.659Z" Recipient="https://local.mbx.com:4001/auth/ahead/sso"/></saml2:SubjectConfirmation></saml2:Subject><saml2:Conditions NotBefore="2023-07-10T13:35:29.659Z" NotOnOrAfter="2023-07-10T13:45:29.659Z" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:AudienceRestriction><saml2:Audience>xqO52CNELd0hVB9vaX1d_dcwuYAxGUSr</saml2:Audience></saml2:AudienceRestriction></saml2:Conditions><saml2:AuthnStatement AuthnInstant="2023-07-10T13:40:29.658Z" SessionIndex="id1688996429657.1145032012" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"><saml2:AuthnContext><saml2:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml2:AuthnContextClassRef></saml2:AuthnContext></saml2:AuthnStatement></saml2:Assertion></saml2p:Response>"
iex> {:ok, saml_body} = saml_response |> Base.decode64()
iex> {:ok, root} = SimpleXml.parse(saml_body)
iex> SimpleXml.verify(root, public_key)
{:error, :signature_verification_failed}