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SignatureXAdES_B.cpp
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SignatureXAdES_B.cpp
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/*
* libdigidocpp
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "SignatureXAdES_B.h"
#include "ASiC_E.h"
#include "Conf.h"
#include "DataFile_p.h"
#include "log.h"
#include "crypto/Digest.h"
#include "crypto/OpenSSLHelpers.h"
#include "crypto/Signer.h"
#include "crypto/X509CertStore.h"
#include "crypto/X509Crypto.h"
#include "util/DateTime.h"
#include "util/File.h"
#include "xml/en_31916201v010101.hxx"
#include "xml/OpenDocument_dsig.hxx"
#include "xml/SecureDOMParser.h"
#include "xml/URIResolver.h"
DIGIDOCPP_WARNING_PUSH
DIGIDOCPP_WARNING_DISABLE_CLANG("-Wnull-conversion")
DIGIDOCPP_WARNING_DISABLE_GCC("-Wunused-parameter")
DIGIDOCPP_WARNING_DISABLE_MSVC(4005)
#include <xsec/dsig/DSIGReference.hpp>
#include <xsec/enc/XSECKeyInfoResolverDefault.hpp>
#include <xsec/framework/XSECException.hpp>
#include <xsec/framework/XSECProvider.hpp>
DIGIDOCPP_WARNING_POP
#include <regex>
#if _MSC_VER >= 1900 || (__cplusplus >= 201103L && \
(!defined(__GLIBCXX__) || (__cplusplus >= 201402L) || \
(defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) || \
defined(_GLIBCXX_REGEX_STATE_LIMIT) || \
(defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE > 4))))
#define HAVE_WORKING_REGEX
#endif
using namespace digidoc;
using namespace digidoc::asic;
using namespace digidoc::dsig;
using namespace digidoc::util;
using namespace digidoc::xades;
using namespace std;
using namespace xercesc;
using namespace xml_schema;
namespace xml = xsd::cxx::xml;
const string SignatureXAdES_B::XADES_NAMESPACE = "http:https://uri.etsi.org/01903/v1.3.2#";
const string SignatureXAdES_B::XADESv141_NAMESPACE = "http:https://uri.etsi.org/01903/v1.4.1#";
const string SignatureXAdES_B::ASIC_NAMESPACE = "http:https://uri.etsi.org/02918/v1.2.1#";
const string SignatureXAdES_B::OPENDOCUMENT_NAMESPACE = "urn:oasis:names:tc:opendocument:xmlns:digitalsignature:1.0";
const string SignatureXAdES_B::POLICY_BDOC_2_1_OID = "urn:oid:1.3.6.1.4.1.10015.1000.3.2.1";
const map<string,SignatureXAdES_B::Policy> SignatureXAdES_B::policylist = {
{SignatureXAdES_B::POLICY_BDOC_2_1_OID,{
"BDOC – FORMAT FOR DIGITAL SIGNATURES",
"https://www.sk.ee/repository/bdoc-spec21.pdf",
// SHA-1
{ 0x80,0x81,0xe2,0x69,0xeb,0x44,0x13,0xde,0x20,0x6e,0x40,0x91,0xca,0x04,0x3d,0x5a,
0xca,0x71,0x51,0xdc},
// SHA-224
{ 0xc8,0xeb,0x95,0x3f,0xc8,0xe5,0x93,0x74,0xaa,0x81,0x5a,0x1e,0x24,0x3f,0xcb,0x42,
0x30,0xd2,0x0a,0xf0,0xc4,0x0d,0xc4,0xb4,0x80,0xa5,0xb0,0xdf},
// SHA-256
{ 0xdd,0x39,0x75,0xa0,0x82,0xd2,0xbc,0xe0,0x16,0xa2,0x67,0x48,0xf5,0x57,0x96,0x57,
0xa2,0x00,0xff,0x7d,0x9e,0x49,0x74,0x54,0xae,0x2f,0x64,0x3c,0x4c,0xf5,0x21,0x5b},
// SHA-384
{ 0x81,0xfa,0xa3,0x7b,0x82,0xf1,0x8d,0xc2,0x8c,0x71,0x2e,0xc1,0xb9,0x7b,0xf9,0x79,
0xaf,0x08,0x99,0x77,0xb7,0x55,0x42,0x62,0xfc,0x07,0x0d,0x6b,0xb3,0x06,0x0b,0x44,
0x40,0xa8,0x1c,0x9d,0xbc,0x67,0x4c,0xb5,0x0c,0x97,0x33,0xc6,0x33,0x17,0x1a,0x4e},
// SHA-512
{ 0x8e,0x1d,0x3f,0xa0,0xe7,0x66,0x0c,0xa7,0x1c,0xcf,0xb0,0x80,0x13,0x39,0x1e,0xbf,
0x29,0x73,0xcf,0x25,0xff,0x6d,0xd1,0xe1,0xc8,0xc4,0x5b,0x84,0xdd,0xb1,0xca,0x3e,
0xa6,0x7b,0x18,0x86,0x04,0xd8,0x20,0x9b,0xf8,0x54,0x4e,0xb0,0x5f,0xb3,0x67,0x58,
0x39,0xb9,0xef,0xfe,0xf7,0x75,0x7d,0x34,0x5e,0x39,0xa8,0xa5,0xbf,0x4a,0xa1,0xd7}
}},
{"urn:oid:1.3.6.1.4.1.10015.1000.3.2.3",{
"BDOC – FORMAT FOR DIGITAL SIGNATURES",
"http:https://id.ee/public/bdoc-spec212-eng.pdf",
// SHA-1
{ 0x0b,0x2d,0x60,0x6b,0x17,0x9b,0x3b,0x92,0x9c,0x3f,0x79,0xf5,0x92,0x5c,0x84,0xc8,
0xeb,0xef,0x31,0xc6},
// SHA-224
{ 0x9a,0x5d,0x04,0xc1,0xd2,0x4b,0x44,0x4f,0x12,0xa7,0x19,0x0e,0xaa,0x3a,0xa3,0x22,
0xe0,0x41,0xfd,0x78,0x58,0x53,0x85,0x5e,0x9c,0xf0,0x32,0x72},
// SHA-256
{ 0x7a,0x9f,0x0d,0x83,0x43,0x57,0xa3,0xe8,0x46,0xe7,0xca,0x16,0xa3,0x0d,0x57,0x54,
0xf7,0x2c,0xd7,0xdd,0x6d,0x96,0x98,0x6f,0xa9,0x81,0x54,0xd7,0x7b,0x64,0x6f,0xa6},
// SHA-384
{ 0x74,0x25,0x12,0xa7,0xbd,0x3f,0xff,0x88,0xa3,0x6b,0xe0,0x95,0x31,0xdc,0xf6,0xbe,
0x7c,0xc2,0x68,0xef,0x8c,0xdc,0xc7,0xa7,0xc2,0xbc,0x5e,0x95,0x96,0x09,0xb0,0x90,
0xc8,0x5d,0xf7,0x41,0x96,0x32,0x4a,0xb2,0x98,0xf2,0xe4,0x09,0x37,0x72,0xce,0x75},
// SHA-512
{ 0xf0,0x1c,0x13,0xc4,0x49,0x9f,0x6c,0x06,0x3e,0xe5,0x02,0x33,0x01,0x7b,0x49,0xb7,
0x34,0xd4,0xa2,0x2c,0x52,0xab,0x7f,0x7b,0xd2,0x62,0x4f,0x5d,0x4c,0x70,0xe0,0x8f,
0xe8,0x77,0xfe,0x67,0x1a,0x5d,0x3c,0xb0,0x0b,0x36,0x1f,0x8b,0x2e,0xee,0x75,0x9b,
0xee,0x53,0x7a,0xbd,0xea,0x6e,0x08,0x18,0x9a,0xc0,0x5b,0x61,0x78,0x59,0x6c,0x32}
}}
};
namespace digidoc
{
static Base64Binary toBase64(const vector<unsigned char> &v)
{
return Base64Binary(v.data(), v.size());
}
}
/**
* Creates an empty BDOC-BES signature with mandatory XML nodes.
*/
SignatureXAdES_B::SignatureXAdES_B(unsigned int id, ASiContainer *bdoc, Signer *signer)
: bdoc(bdoc)
{
string nr = "S" + to_string(id);
// Signature->SignedInfo
SignedInfoType signedInfo(Uri(/*URI_ID_EXC_C14N_NOC*/URI_ID_C14N11_NOC), Uri(URI_ID_RSA_SHA256));
// Signature->SignatureValue
SignatureValueType signatureValue;
signatureValue.id(nr + "-SIG");
// Signature (root)
asicsignature.reset(new XAdESSignaturesType());
asicsignature->signature().push_back(SignatureType(signedInfo, signatureValue));
signature = &asicsignature->signature()[0];
signature->id(nr);
// Signature->Object->QualifyingProperties->SignedProperties
SignedPropertiesType signedProperties;
signedProperties.signedSignatureProperties(SignedSignaturePropertiesType());
signedProperties.id(nr + "-SignedProperties");
if(signer->profile().find(ASiC_E::ASIC_TM_PROFILE) != string::npos ||
signer->profile().find(ASiC_E::EPES_PROFILE) != string::npos)
{
map<string,Policy>::const_iterator p = policylist.find(POLICY_BDOC_2_1_OID);
IdentifierType identifierid(p->first);
identifierid.qualifier(QualifierType::OIDAsURN);
ObjectIdentifierType identifier(identifierid);
identifier.description(p->second.DESCRIPTION);
string digestUri = Conf::instance()->digestUri();
const vector<unsigned char> *data = &p->second.SHA256;
if(Conf::instance()->digestUri() == URI_SHA224) data = &p->second.SHA224;
else if(Conf::instance()->digestUri() == URI_SHA256) data = &p->second.SHA256;
else if(Conf::instance()->digestUri() == URI_SHA384) data = &p->second.SHA384;
else if(Conf::instance()->digestUri() == URI_SHA512) data = &p->second.SHA512;
DigestAlgAndValueType policyDigest(DigestMethodType(digestUri),
Base64Binary(data->data(), data->size()));
SignaturePolicyIdType policyId(identifier, policyDigest);
SigPolicyQualifiersListType::SigPolicyQualifierType uri;
uri.sPURI(p->second.URI);
SigPolicyQualifiersListType qualifiers;
qualifiers.sigPolicyQualifier().push_back(uri);
policyId.sigPolicyQualifiers(qualifiers);
SignaturePolicyIdentifierType policyidentifier;
policyidentifier.signaturePolicyId(policyId);
signedProperties.signedSignatureProperties()->signaturePolicyIdentifier(policyidentifier);
}
// Signature->Object->QualifyingProperties
QualifyingPropertiesType qualifyingProperties("#" + nr);
qualifyingProperties.signedProperties(signedProperties);
// Signature->Object
ObjectType object;
object.qualifyingProperties().push_back(qualifyingProperties);
signature->object().push_back(object);
//Fill XML-DSIG/XAdES properties
X509Cert c = signer->cert();
setKeyInfo(c);
if(signer->usingENProfile())
{
setSigningCertificateV2(c);
setSignatureProductionPlaceV2(signer->city(), signer->streetAddress(), signer->stateOrProvince(), signer->postalCode(), signer->countryName());
setSignerRolesV2(signer->signerRoles());
}
else
{
setSigningCertificate(c);
setSignatureProductionPlace(signer->city(), signer->stateOrProvince(), signer->postalCode(), signer->countryName());
setSignerRoles(signer->signerRoles());
}
signature->signedInfo().signatureMethod(Uri( X509Crypto(c).isRSAKey() ?
Digest::toRsaUri(signer->method()) : Digest::toEcUri(signer->method()) ));
setSigningTime(date::gmtime(time(nullptr)));
string digestMethod = Conf::instance()->digestUri();
for(const DataFile *f: bdoc->dataFiles())
{
string referenceId = addReference(File::toUriPath(f->fileName()), digestMethod, f->calcDigest(digestMethod), {});
addDataObjectFormat("#" + referenceId, f->mediaType());
}
Digest calc(digestMethod);
calcDigestOnNode(&calc, XADES_NAMESPACE, "SignedProperties");
addReference("#" + nr +"-SignedProperties", calc.uri(), calc.result(), "http:https://uri.etsi.org/01903#SignedProperties");
}
/**
* Load signature from the input stream.
*
* @param sigdata Input stream
* @param bdoc BDOC container
* @param relaxSchemaValidation Flag indicating if relaxed schema should be used for validation -
* elements of SignatureProductionPlaceType can be in any order in signatures
* produced by other systems; default = false
* @throws SignatureException
*/
SignatureXAdES_B::SignatureXAdES_B(istream &sigdata, ASiContainer *bdoc, bool relaxSchemaValidation)
: bdoc(bdoc)
{
try
{
stringstream is;
is << sigdata.rdbuf();
sigdata_ = is.str();
Properties properties;
const auto xadesShema = relaxSchemaValidation ? "/XAdES01903v132-201601-relaxed.xsd" : "/XAdES01903v132-201601.xsd";
properties.schema_location(XADES_NAMESPACE, File::fullPathUrl(Conf::instance()->xsdPath() + xadesShema));
properties.schema_location(XADESv141_NAMESPACE, File::fullPathUrl(Conf::instance()->xsdPath() + "/XAdES01903v141-201601.xsd"));
properties.schema_location(URI_ID_DSIG, File::fullPathUrl(Conf::instance()->xsdPath() + "/xmldsig-core-schema.xsd"));
properties.schema_location(ASIC_NAMESPACE, File::fullPathUrl(Conf::instance()->xsdPath() + "/en_31916201v010101.xsd"));
properties.schema_location(OPENDOCUMENT_NAMESPACE, File::fullPathUrl(Conf::instance()->xsdPath() + "/OpenDocument_dsig.xsd"));
unique_ptr<DOMDocument> doc(SecureDOMParser(properties.schema_location()).parseIStream(is));
/* http:https://www.etsi.org/deliver/etsi_ts/102900_102999/102918/01.03.01_60/ts_102918v010301p.pdf
* 6.2.2
* 3) The root element of each "*signatures*.xml" content shall be either:
* a) <asic:XAdESSignatures> as specified in clause A.5, the recommended format; or
* b) <document-signatures> as specified in OASIS Open Document Format [9]; or
*
* Case container is ADoc 1.0 then handle document-signatures root element
*/
if(bdoc->mediaType() == ASiC_E::MIMETYPE_ADOC)
{
odfsignature = document_signatures(*doc, Flags::dont_initialize, properties);
if(odfsignature->signature().size() > 1)
THROW("More than one signature in signatures.xml file is unsupported");
if(odfsignature->signature().empty())
THROW("Failed to parse signature XML");
signature = &odfsignature->signature()[0];
}
else
{
asicsignature = xAdESSignatures(*doc, Flags::dont_initialize, properties);
if(asicsignature->signature().size() > 1)
THROW("More than one signature in signatures.xml file is unsupported");
if(asicsignature->signature().empty())
THROW("Failed to parse signature XML");
signature = &asicsignature->signature()[0];
}
}
catch(const Parsing& e)
{
stringstream s;
s << e;
THROW("Failed to parse signature XML: %s", s.str().c_str());
}
catch(const xsd::cxx::exception& e)
{
THROW("Failed to parse signature XML: %s", e.what());
}
const QualifyingPropertiesType::SignedPropertiesOptional &sp = qualifyingProperties().signedProperties();
if(sp.present())
{
const SignedPropertiesType::SignedDataObjectPropertiesOptional &sdop = sp->signedDataObjectProperties();
if(sdop.present())
{
if(!sdop->commitmentTypeIndication().empty())
DEBUG("CommitmentTypeIndicationType is not supported");
if(!sdop->allDataObjectsTimeStamp().empty())
THROW("AllDataObjectsTimeStamp is not supported");
if(!sdop->individualDataObjectsTimeStamp().empty())
THROW("IndividualDataObjectsTimeStampType is not supported");
}
}
const QualifyingPropertiesType::UnsignedPropertiesOptional &up = qualifyingProperties().unsignedProperties();
if(up.present())
{
if(up->unsignedDataObjectProperties().present())
THROW("UnsignedDataObjectProperties are not supported");
const UnsignedPropertiesType::UnsignedSignaturePropertiesOptional &usp = up->unsignedSignatureProperties();
if(usp.present())
{
if(!usp->counterSignature().empty())
THROW("CounterSignature is not supported");
if(!usp->completeCertificateRefs().empty())
THROW("CompleteCertificateRefs are not supported");
if(!usp->completeRevocationRefs().empty())
THROW("CompleteRevocationRefs are not supported");
if(!usp->attributeCertificateRefs().empty())
THROW("AttributeCertificateRefs are not supported");
if(!usp->attributeRevocationRefs().empty())
THROW("AttributeRevocationRefs are not supported");
if(!usp->sigAndRefsTimeStamp().empty())
THROW("SigAndRefsTimeStamp is not supported");
if(!usp->refsOnlyTimeStamp().empty())
THROW("RefsOnlyTimeStamp is not supported");
if(!usp->attrAuthoritiesCertValues().empty())
THROW("AttrAuthoritiesCertValues are not supported");
if(!usp->attributeRevocationValues().empty())
THROW("AttributeRevocationValues are not supported");
if(!usp->archiveTimeStamp().empty())
THROW("ArchiveTimeStamp is not supported");
if(!usp->timeStampValidationData().empty())
THROW("TimeStampValidationData is not supported");
}
}
// Base class has verified the signature to be valid according to XML-DSig.
// Now perform additional checks here and throw if this signature is
// ill-formed according to BDoc.
getSignedSignatureProperties(); // assumed to throw in case this block doesn't exist
signingCertificate(); // assumed to throw in case this block doesn't exist
if(id().empty())
THROW("Signature element mandatory attribute 'Id' is missing");
}
SignatureXAdES_B::~SignatureXAdES_B() = default;
string SignatureXAdES_B::policy() const
{
const SignedSignaturePropertiesType::SignaturePolicyIdentifierOptional &identifier =
getSignedSignatureProperties().signaturePolicyIdentifier();
if(!identifier.present())
return string();
const SignaturePolicyIdentifierType::SignaturePolicyIdOptional &id = identifier->signaturePolicyId();
if(!id.present())
return string();
const ObjectIdentifierType::IdentifierType &objid = id->sigPolicyId().identifier();
if(!objid.qualifier().present() || objid.qualifier().get() != QualifierType::OIDAsURN)
return string();
return objid;
}
/**
* @return returns signature mimetype.
*/
string SignatureXAdES_B::profile() const
{
string base = policy().empty() ? ASiC_E::BES_PROFILE : ASiC_E::EPES_PROFILE;
try {
const QualifyingPropertiesType::UnsignedPropertiesOptional &up = qualifyingProperties().unsignedProperties();
if(!up.present())
return base;
const UnsignedPropertiesType::UnsignedSignaturePropertiesOptional &usp = up->unsignedSignatureProperties();
if(!usp.present())
return base;
if(!usp->signatureTimeStamp().empty())
{
if(!usp->archiveTimeStampV141().empty())
return base + "/" + ASiC_E::ASIC_TSA_PROFILE;
return base + "/" + ASiC_E::ASIC_TS_PROFILE;
}
if(!usp->revocationValues().empty())
{
if(!usp->archiveTimeStampV141().empty())
return base + "/" + ASiC_E::ASIC_TMA_PROFILE;
return base + "/" + ASiC_E::ASIC_TM_PROFILE;
}
}
catch(const Exception &) {}
return base;
}
string SignatureXAdES_B::trustedSigningTime() const
{
return claimedSigningTime();
}
string SignatureXAdES_B::SPUri() const
{
const SignedSignaturePropertiesType::SignaturePolicyIdentifierOptional &identifier =
getSignedSignatureProperties().signaturePolicyIdentifier();
if(!identifier.present())
return {};
const SignaturePolicyIdentifierType::SignaturePolicyIdOptional &id = identifier->signaturePolicyId();
if(!id.present())
return {};
const SignaturePolicyIdType::SigPolicyQualifiersOptional &qual = id->sigPolicyQualifiers();
if(!qual.present())
return {};
for(const SigPolicyQualifiersListType::SigPolicyQualifierType &i: qual->sigPolicyQualifier())
if(i.sPURI().present())
return i.sPURI().get();
return {};
}
void SignatureXAdES_B::validate() const
{
validate(POLv2);
}
/**
* Check if signature is valid according to BDoc-BES format. Performs
* any off-line checks that prove mathematical correctness.
* However, there is no warranty against if the signature has expired. On-line
* validation should be performed to check for signature expiration.
*
* @throws Exception containing details on what's wrong in this signature.
*/
void SignatureXAdES_B::validate(const string &policy) const
{
DEBUG("SignatureXAdES_B::validate(%s)", policy.c_str());
// A "master" exception containing all problems (causes) with this signature.
// It'll be only thrown in case we have a reason (cause).
Exception exception(EXCEPTION_PARAMS("Signature validation"));
if(!Exception::hasWarningIgnore(Exception::SignatureDigestWeak) &&
(signatureMethod() == URI_RSA_SHA1 || signatureMethod() == URI_ECDSA_SHA1))
{
Exception e(EXCEPTION_PARAMS("Signature digest weak"));
e.setCode(Exception::SignatureDigestWeak);
exception.addCause(e);
}
if(profile().find(ASiC_E::ASIC_TM_PROFILE) != string::npos)
{
if(SPUri().empty())
EXCEPTION_ADD(exception, "Signature SPUri is missing");
map<string,Policy>::const_iterator p = policylist.find(SignatureXAdES_B::policy());
if(p != policylist.end())
{
const SignedSignaturePropertiesType::SignaturePolicyIdentifierOptional &identifier =
getSignedSignatureProperties().signaturePolicyIdentifier();
if(identifier.present())
{
const SignaturePolicyIdentifierType::SignaturePolicyIdOptional &id = identifier->signaturePolicyId();
if(id.present())
{
#if 0 //Disabled IB-3684
const DigestAlgAndValueType &hash = id->sigPolicyHash();
vector<unsigned char> digest(hash.digestValue().begin(), hash.digestValue().end());
bool valid = false;
if(hash.digestMethod().algorithm() == URI_SHA1) valid = digest == p->second.SHA1;
else if(hash.digestMethod().algorithm() == URI_SHA224) valid = digest == p->second.SHA224;
else if(hash.digestMethod().algorithm() == URI_SHA256) valid = digest == p->second.SHA256;
else if(hash.digestMethod().algorithm() == URI_SHA384) valid = digest == p->second.SHA384;
else if(hash.digestMethod().algorithm() == URI_SHA512) valid = digest == p->second.SHA512;
else
EXCEPTION_ADD(exception, "Signature policy unknwon digest method");
if(!valid)
EXCEPTION_ADD(exception, "Signature policy digest does not match");
#endif
}
else
EXCEPTION_ADD(exception, "Signature policy digest is missing");
}
else
EXCEPTION_ADD(exception, "Signature policy digest is missing");
}
else
EXCEPTION_ADD(exception, "Signature policy does not match BDOC 2.1 policy");
}
try {
stringstream ofs;
saveToXml(ofs);
unique_ptr<SecureDOMParser> parser(new SecureDOMParser);
unique_ptr<DOMDocument> doc(parser->parseIStream(ofs));
XSECProvider prov;
auto deleteSig = [&](DSIGSignature *s) { prov.releaseSignature(s); };
unique_ptr<DSIGSignature, decltype(deleteSig)> sig(prov.newSignatureFromDOM(doc.get()), deleteSig);
unique_ptr<URIResolver> uriresolver(new URIResolver(bdoc));
unique_ptr<XSECKeyInfoResolverDefault> keyresolver(new XSECKeyInfoResolverDefault);
sig->setURIResolver(uriresolver.get());
sig->setKeyInfoResolver(keyresolver.get());
sig->registerIdAttributeName(X("ID"));
sig->setIdByAttributeName(true);
sig->load();
safeBuffer m_errStr;
m_errStr.sbXMLChIn(DSIGConstants::s_unicodeStrEmpty);
if(!DSIGReference::verifyReferenceList(sig->getReferenceList(), m_errStr))
//if(!sig->verify()) //xml-security-c < 2.0.0 does not support URI_ID_C14N11_NOC canonicalization
{
//string s = xml::transcode<char>(sig->getErrMsgs());
string s = xml::transcode<char>(m_errStr.rawXMLChBuffer());
EXCEPTION_ADD(exception, "Failed to validate signature: %s", s.c_str());
}
}
catch(const Parsing &e)
{
stringstream s;
s << e;
EXCEPTION_ADD(exception, "Failed to validate signature: %s", s.str().c_str());
}
catch(XSECException &e)
{
string s = xml::transcode<char>(e.getMsg());
EXCEPTION_ADD(exception, "Failed to validate signature: %s", s.c_str());
}
catch(const XMLException &e)
{
string s = xml::transcode<char>(e.getMessage());
EXCEPTION_ADD(exception, "Failed to validate signature: %s", s.c_str());
}
catch(...)
{
EXCEPTION_ADD(exception, "Failed to validate signature");
}
const SignedPropertiesType &sp = qualifyingProperties().signedProperties().get();
map<string,string> mimeinfo;
if(sp.signedDataObjectProperties().present())
{
for(const DataObjectFormatType &data: sp.signedDataObjectProperties()->dataObjectFormat())
{
if(data.mimeType().present())
mimeinfo.insert(pair<string,string>(data.objectReference(), data.mimeType().get()));
}
}
else
{
// ADoc 1.0 does not add DataObjectProperties>DataObjectFormat elements
if(bdoc->mediaType() != ASiC_E::MIMETYPE_ADOC)
EXCEPTION_ADD(exception, "DataObjectFormat element is missing");
}
map<string,string> signatureref;
string signedPropertiesId = sp.id().present() ? "#" + sp.id().get() : string();
bool signedInfoFound = false;
for(const ReferenceType &ref: signature->signedInfo().reference())
{
if(!ref.uRI().present() || ref.uRI()->empty())
{
EXCEPTION_ADD(exception, "Reference URI missing");
continue;
}
if((ref.digestMethod().algorithm() == URI_SHA1 ||
ref.digestMethod().algorithm() == URI_SHA224) &&
!Exception::hasWarningIgnore(Exception::ReferenceDigestWeak))
{
Exception e(EXCEPTION_PARAMS("Reference '%s' digest weak", ref.uRI().get().c_str()));
e.setCode(Exception::ReferenceDigestWeak);
exception.addCause(e);
}
if(ref.uRI().get() == signedPropertiesId)
signedInfoFound = true;
else if(!sp.signedDataObjectProperties().present())
continue; // DataObjectProperties is missing, no need to match later MediaTypes
else if(!ref.id().present())
EXCEPTION_ADD(exception, "Reference '%s' ID missing", ref.uRI().get().c_str());
else
{
string uri = File::fromUriPath(ref.uRI().get());
if(uri[0] == '/')
uri.erase(0, 1);
signatureref.insert({ uri, mimeinfo["#"+ref.id().get()] });
}
};
if(!signedInfoFound)
EXCEPTION_ADD(exception, "SignedProperties not found");
// Match DataObjectFormat element MediaTypes with Manifest
if(!signatureref.empty())
{
for(const DataFile *file: bdoc->dataFiles())
{
map<string,string>::const_iterator i = signatureref.find(file->fileName());
if(i != signatureref.end())
{
if(i->second != file->mediaType())
EXCEPTION_ADD(exception, "Manifest datafile '%s' mime '%s' does not match signature mime '%s'",
file->fileName().c_str(), file->mediaType().c_str(), i->second.c_str());
#ifdef HAVE_WORKING_REGEX
static regex reg(R"(([\w])*/([\w\-\+\.])*)");
if(!file->mediaType().empty() && !regex_match(file->mediaType(), reg))
{
Exception w(EXCEPTION_PARAMS("'%s' is not conformant mime-type string!", file->mediaType().c_str()));
w.setCode(Exception::MimeTypeWarning);
exception.addCause(w);
}
#endif
signatureref.erase(i);
}
else
EXCEPTION_ADD(exception, "Manifest datafile not listed in signature references %s", file->fileName().c_str());
};
}
if(bdoc->dataFiles().empty())
EXCEPTION_ADD(exception, "No DataFiles signed");
if(!signatureref.empty())
EXCEPTION_ADD(exception, "Manifest references and signature references do not match");
try { checkKeyInfo(); }
catch(const Exception& e) { exception.addCause(e); }
try { checkSignatureValue(); }
catch(const Exception& e) { exception.addCause(e); }
try { checkSigningCertificate(policy == POLv1); }
catch(const Exception& e) { exception.addCause(e); }
if(!exception.causes().empty())
throw exception;
}
vector<unsigned char> SignatureXAdES_B::dataToSign() const
{
// Calculate SHA digest of the Signature->SignedInfo node.
Digest calc(signatureMethod());
calcDigestOnNode(&calc, URI_ID_DSIG, "SignedInfo");
return calc.result();
}
/**
* Verify if SigningCertificate matches with
* XAdES::SigningCertificate/SigningCertificateV2 Digest and IssuerSerial info
*/
void SignatureXAdES_B::checkKeyInfo() const
{
X509Cert x509 = signingCertificate();
const SignedSignaturePropertiesType::SigningCertificateOptional &sigCertOpt =
getSignedSignatureProperties().signingCertificate();
const SignedSignaturePropertiesType::SigningCertificateV2Optional &sigCertV2Opt =
getSignedSignatureProperties().signingCertificateV2();
const DigestAlgAndValueType &certDigest = [&]{
if(sigCertOpt.present())
{
const CertIDListType::CertSequence &certs = sigCertOpt->cert();
if(certs.size() != 1)
THROW("Number of SigningCertificates is %lu, must be 1", (unsigned long)certs.size());
// Verify Issuer Name
const X509IssuerSerialType::X509IssuerNameType &certIssuerName = certs[0].issuerSerial().x509IssuerName();
const X509IssuerSerialType::X509SerialNumberType &certSerialNumber = certs[0].issuerSerial().x509SerialNumber();
if(X509Crypto(x509).compareIssuerToString(certIssuerName) != 0 || x509.serial() != certSerialNumber)
{
DEBUG("certIssuerName: \"%s\"", certIssuerName.c_str());
DEBUG("x509.getCertIssuerName() \"%s\"", x509.issuerName().c_str());
DEBUG("sertCerials = %s %s", x509.serial().c_str(), certSerialNumber.c_str());
THROW("Signing certificate issuer information does not match");
}
return certs[0].certDigest();
}
if(sigCertV2Opt.present())
{
const CertIDListV2Type::CertSequence &certs = sigCertV2Opt->cert();
if(certs.size() != 1)
THROW("Number of SigningCertificatesV2 is %lu, must be 1", (unsigned long)certs.size());
// Verify IssuerSerialV2, optional parameter
if(certs[0].issuerSerialV2().present())
{
if(!X509Crypto(x509).compareIssuerToDer(
vector<unsigned char>(certs[0].issuerSerialV2()->begin(), certs[0].issuerSerialV2()->end())))
THROW("Signing certificate issuer information does not match");
}
return certs[0].certDigest();
}
THROW("SigningCertificate/SigningCertificateV2 not found");
}();
// lets check digest with x509 that was in keyInfo
Digest certDigestCalc(certDigest.digestMethod().algorithm());
certDigestCalc.update(x509);
vector<unsigned char> calcDigest = certDigestCalc.result();
if(certDigest.digestValue().size() != calcDigest.size() ||
memcmp(calcDigest.data(), certDigest.digestValue().data(), certDigest.digestValue().size()) != 0)
{
DEBUGMEM("Document cert digest", certDigest.digestValue().data(), certDigest.digestValue().size());
DEBUGMEM("Calculated cert digest", calcDigest.data(), calcDigest.size());
THROW("Signing certificate digest does not match");
}
}
/**
* Check if signing certificate was issued by trusted party.
* @throws Exception on a problem with signing certificate
*/
void SignatureXAdES_B::checkSigningCertificate(bool noqscd) const
{
try
{
X509Cert signingCert = signingCertificate();
vector<X509Cert::KeyUsage> usage = signingCert.keyUsage();
if(find(usage.cbegin(), usage.cend(), X509Cert::NonRepudiation) == usage.cend())
THROW("Signing certificate does not contain NonRepudiation key usage flag");
if(!X509CertStore::instance()->verify(signingCert, noqscd))
THROW("Unable to verify signing certificate");
}
catch(const Exception &e)
{
THROW_CAUSE( e, "Unable to verify signing certificate" );
}
}
/**
* Validate signature value.
*
* @throws throws exception if signature value did not match.
*/
void SignatureXAdES_B::checkSignatureValue() const
{
try
{
vector<unsigned char> sha = dataToSign();
DEBUGMEM("Digest", sha.data(), sha.size());
if(!X509Crypto(signingCertificate()).verify(signatureMethod(), sha, getSignatureValue()))
THROW_OPENSSLEXCEPTION("Signature is not valid.");
}
catch(const Exception &e)
{
THROW_CAUSE(e, "Failed to validate signatureValue.");
}
}
void SignatureXAdES_B::addDataObjectFormat(const string &uri, const string &mime)
{
QualifyingPropertiesType::SignedPropertiesOptional& spOpt = qualifyingProperties().signedProperties();
if(!spOpt.present())
THROW("QualifyingProperties block 'SignedProperties' is missing.");
if(!spOpt->signedDataObjectProperties().present())
spOpt->signedDataObjectProperties(SignedDataObjectPropertiesType());
DataObjectFormatType dataObject(uri);
dataObject.mimeType(mime);
spOpt->signedDataObjectProperties()->dataObjectFormat().push_back(dataObject);
}
/**
* Adds artifact digest value as reference in the signature.
*
* @param uri reference URI.
* @param digestUri digest method URI (e.g. 'http:https://www.w3.org/2000/09/xmldsig#sha1' for SHA1)
* @param digestValue digest value.
* @param type reference type, optional parameter, default no type is added to the reference.
* For example 'http:https://uri.etsi.org/01903/#SignedProperties' for signed properties
* reference.
* @returns referenece id
* @throws SignatureException throws exception if the digest method is not supported.
*/
string SignatureXAdES_B::addReference(const string& uri, const string& digestUri,
const vector<unsigned char> &digestValue, const string& type)
{
ReferenceType reference(DigestMethodType(digestUri), toBase64(digestValue));
reference.uRI(uri);
if(!type.empty())
reference.type(type);
SignedInfoType::ReferenceSequence &seq = signature->signedInfo().reference();
reference.id(id() + Log::format("-RefId%lu", (unsigned long)seq.size()));
seq.push_back(reference);
return reference.id().get();
}
/**
* Adds signing certificate to the signature XML. The DER encoded X.509 certificate is added to
* Signature->KeyInfo->X509Data->X509Certificate.
*
* @param cert certificate that is used for signing the signature XML.
*/
void SignatureXAdES_B::setKeyInfo(const X509Cert& x509)
{
// BASE64 encoding of a DER-encoded X.509 certificate = PEM encoded.
X509DataType x509Data;
x509Data.x509Certificate().push_back(toBase64(x509));
KeyInfoType keyInfo;
keyInfo.x509Data().push_back(x509Data);
signature->keyInfo(keyInfo);
}
/**
* Adds signing certificate to the signature XML. Certificate info is added to
* Signature->Object->QualifyingProperties->SignedProperties->SignedSignatureProperties->SigningCertificate.
*
* @param cert certificate that is used for signing the signature XML.
*/
void SignatureXAdES_B::setSigningCertificate(const X509Cert& x509)
{
// Calculate digest of the X.509 certificate.
Digest digest;
digest.update(x509);
CertIDListType signingCertificate;
signingCertificate.cert().push_back(CertIDType(
DigestAlgAndValueType(DigestMethodType(digest.uri()), toBase64(digest.result())),
X509IssuerSerialType(x509.issuerName(), x509.serial())));
getSignedSignatureProperties().signingCertificate(signingCertificate);
}
/**
* Adds signing certificate to the signature XML. Certificate info is added to
* Signature->Object->QualifyingProperties->SignedProperties->SignedSignatureProperties->SigningCertificateV2.
*
* @param cert certificate that is used for signing the signature XML.
*/
void SignatureXAdES_B::setSigningCertificateV2(const X509Cert& x509)
{
// Calculate digest of the X.509 certificate.
Digest digest;
digest.update(x509);
CertIDListV2Type signingCertificate;
signingCertificate.cert().push_back(CertIDTypeV2(
DigestAlgAndValueType(DigestMethodType(digest.uri()), toBase64(digest.result()))));
getSignedSignatureProperties().signingCertificateV2(signingCertificate);
}
/**
* Sets signature production place.
*
* @param spp signature production place.
*/
void SignatureXAdES_B::setSignatureProductionPlace(const string &city,
const string &stateOrProvince, const string &postalCode, const string &countryName)
{
if(city.empty() && stateOrProvince.empty() &&
postalCode.empty() && countryName.empty())
return;
SignatureProductionPlaceType signatureProductionPlace;
if(!city.empty())
signatureProductionPlace.city(city);
if(!stateOrProvince.empty())
signatureProductionPlace.stateOrProvince(stateOrProvince);
if(!postalCode.empty())
signatureProductionPlace.postalCode(postalCode);
if(!countryName.empty())
signatureProductionPlace.countryName(countryName);
getSignedSignatureProperties().signatureProductionPlace(signatureProductionPlace);
}
/**
* Sets signature production place.
*
* @param spp signature production place.
*/
void SignatureXAdES_B::setSignatureProductionPlaceV2(const string &city, const string &streetAddress,
const string &stateOrProvince, const string &postalCode, const string &countryName)
{
if(city.empty() && streetAddress.empty() && stateOrProvince.empty() &&
postalCode.empty() && countryName.empty())
return;
SignatureProductionPlaceV2Type signatureProductionPlace;
if(!city.empty())
signatureProductionPlace.city(city);
if(!streetAddress.empty())
signatureProductionPlace.streetAddress(streetAddress);
if(!stateOrProvince.empty())
signatureProductionPlace.stateOrProvince(stateOrProvince);
if(!postalCode.empty())
signatureProductionPlace.postalCode(postalCode);
if(!countryName.empty())
signatureProductionPlace.countryName(countryName);
getSignedSignatureProperties().signatureProductionPlaceV2(signatureProductionPlace);
}
/**
* Sets signer claimed roles to the signature.
* NB! Only ClaimedRoles are supported. CerifiedRoles are not supported.
*
* @param roles signer roles.
*/
void SignatureXAdES_B::setSignerRoles(const vector<string> &roles)
{
if(roles.empty())
return;
ClaimedRolesListType claimedRoles;
claimedRoles.claimedRole().reserve(roles.size());
for(const string &role: roles)
claimedRoles.claimedRole().push_back(role);
SignerRoleType signerRole;
signerRole.claimedRoles(claimedRoles);
getSignedSignatureProperties().signerRole(signerRole);
}
/**
* Sets signer claimed roles to the signature.
* NB! Only ClaimedRoles are supported. CerifiedRoles are not supported.
*
* @param roles signer roles.
*/
void SignatureXAdES_B::setSignerRolesV2(const vector<string> &roles)
{
if(roles.empty())
return;
ClaimedRolesListType claimedRoles;
claimedRoles.claimedRole().reserve(roles.size());
for(const string &role: roles)
claimedRoles.claimedRole().push_back(role);
SignerRoleV2Type signerRole;
signerRole.claimedRoles(claimedRoles);
getSignedSignatureProperties().signerRoleV2(signerRole);
}
/**
* Sets signature signing time.
*
* @param signingTime signing time.
*/
void SignatureXAdES_B::setSigningTime(const struct tm &signingTime)
{
getSignedSignatureProperties().signingTime(date::makeDateTime(signingTime));
}
/**
* Sets signature value.
*
* @param signatureValue signature value.
*/
void SignatureXAdES_B::setSignatureValue(const vector<unsigned char> &signatureValue)
{
// Make copy of current signature value id.
string id = signature->signatureValue().id().get();
// Set new signature value.
signature->signatureValue(toBase64(signatureValue));
// Set signature value id back to its old value.
signature->signatureValue().id(id);
sigdata_.clear();
}
/**
* @return returns signature value.
*/
vector<unsigned char> SignatureXAdES_B::getSignatureValue() const
{
const SignatureType::SignatureValueType &signatureValueType = signature->signatureValue();
return vector<unsigned char>(signatureValueType.begin(), signatureValueType.end());
}
/**
* Canonicalize XML node using one of the supported methods in XML-DSIG
* Using Xerces for parsing XML to preserve the white spaces "as is" and get
* the same digest value on XML node each time.
*
* @param calc digest calculator implementation.
* @param ns signature tag namespace.
* @param tagName signature tag name.
*/
void SignatureXAdES_B::calcDigestOnNode(Digest* calc, const string& ns,
const string& tagName, const string &id) const
{
try
{
// Parse Xerces DOM from file, to preserve the white spaces "as is"