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/**
* @author ETSI / STF544
* @version $URL$
* $Id$
* @desc Module containing functions for ITS PKI ATS
* @copyright ETSI Copyright Notification
* No part may be reproduced except as authorized by written permission.
* The copyright and the foregoing restriction extend to reproduction in all media.
* All rights reserved.
*
*/
module LibItsPki_Functions {
// LibCommon
import from LibCommon_Time all;
import from LibCommon_VerdictControl all;
import from LibCommon_Sync all;
import from LibCommon_BasicTypesAndValues all;
import from LibCommon_DataStrings all;
// LibIts
import from IEEE1609dot2BaseTypes language "ASN.1:1997" all;
import from IEEE1609dot2 language "ASN.1:1997" all;
import from EtsiTs102941BaseTypes language "ASN.1:1997" all;
import from EtsiTs102941TypesEnrolment language "ASN.1:1997" all;
import from EtsiTs102941TypesAuthorization language "ASN.1:1997" all;
import from EtsiTs102941TypesAuthorizationValidation language "ASN.1:1997" all;
import from EtsiTs102941MessagesCa language "ASN.1:1997" all;
import from EtsiTs103097Module language "ASN.1:1997" all;
import from ITS_Container language "ASN.1:1997" all;
import from CAM_PDU_Descriptions language "ASN.1:1997" all;
// LibItsCommon
import from LibItsCommon_Functions all;
import from LibItsCommon_ASN1_NamedNumbers all;
import from LibItsCommon_Pixits all;
// LibItsGeoNetworking
import from LibItsGeoNetworking_Pixits all;
// LibItsSecurity
import from LibItsSecurity_TypesAndValues all;
import from LibItsSecurity_Templates all;
import from LibItsSecurity_Functions all;
import from LibItsSecurity_Pixits all;
import from LibItsSecurity_TestSystem all;
// LibItsHttp
import from LibItsHttp_TypesAndValues all;
import from LibItsHttp_Templates all;
/**
* @desc Setups default configuration
* @param p_certificateId The certificate identifier the TA shall use in case of secured IUT
*/
function f_cfUp(
in charstring p_certificateId := "CERT_TS_A_EA", // TODO Use a constant
in charstring p_peerCertificateId := "CERT_IUT_A_EA"
) runs on ItsPki /* TITAN TODO: system ItsPkiSystem */ {
f_initialiseSecuredMode(p_certificateId, p_peerCertificateId);
f_readCertificate(p_certificateId, vc_eaCertificate);
f_getCertificateDigest(p_certificateId, vc_eaHashedId8);
} // End of function f_cfUp
/**
* @desc Setups default configuration
* @param p_certificateId The certificate identifier the TA shall use in case of secured IUT
*/
function f_cfHttpUp(
in charstring p_certificateId := "CERT_TS_A_EA", // TODO Use a constant
in charstring p_peerCertificateId := "CERT_IUT_A_EA"
) runs on ItsPkiHttp /* TITAN TODO: system ItsPkiHttpSystem */ {
map(self:httpPort, system:httpPort);
f_connect4SelfOrClientSync();
f_initialiseSecuredMode(p_certificateId, p_peerCertificateId);
f_readCertificate(p_certificateId, vc_eaCertificate);
f_readSigningKey(p_certificateId, vc_eaPrivateKey);
f_readEncryptingKey(p_certificateId, vc_eaPrivateEncKey);
f_getCertificateDigest(p_certificateId, vc_eaHashedId8);
f_readCertificate(p_peerCertificateId, vc_peerEaCertificate);
f_getCertificateHash(p_peerCertificateId, vc_eaPeerWholeHash);
activate(a_default_pki_http());
function f_cfUp_itss(
in charstring p_certificateId := "CERT_TS_A_EA" // TODO Use a constant
) runs on ItsPkiItss /* TITAN TODO: system ItsPkiItssSystem */ {
f_cfUp();
map(self:geoNetworkingPort, system:geoNetworkingPort);
map(self:utPort, system:utPort);
map(self:acPort, system:acPort);
f_initializeState();
activate(a_default_pki());
} // End of function f_cfUp_itss
/**
* @desc Deletes default configuration
*/
function f_cfDown() runs on ItsPki /* TITAN TODO: system ItsPkiSystem */ {
unmap(self:pkiPort, system:pkiPort);
f_uninitialiseSecuredMode();
} // End of function f_cfDown
/**
* @desc Deletes default configuration
*/
function f_cfHttpDown() runs on ItsPkiHttp /* TITAN TODO: system ItsPkiHttpSystem */ {
unmap(self:httpPort, system:httpPort);
f_disconnect4SelfOrClientSync();
f_uninitialiseSecuredMode();
/**
* @desc Deletes default configuration
*/
function f_cfDown_itss() runs on ItsPkiItss /* TITAN TODO: system ItsPkiItssSystem */ {
unmap(self:geoNetworkingPort, system:geoNetworkingPort);
unmap(self:utPort, system:utPort);
unmap(self:acPort, system:acPort);
f_cfDown();
} // End of function f_cfDown
/**
* @desc Initialise secure mode if required
*/
function f_initialiseSecuredMode(
in charstring p_certificateId := "CERT_TS_A_EA", // TODO Use a constant
in charstring p_peerCertificateId := "CERT_IUT_A_EA"
) runs on ItsSecurityBaseComponent {
// Local variables
// Load certificates
if( not f_loadCertificates(PX_IUT_SEC_CONFIG_NAME) ) {
log("*** INFO: TEST CASE NOW STOPPING ITSELF! ***");
setverdict(inconc);
f_prepareCertificates(p_certificateId, vc_aaCertificate, vc_atCertificate);
function f_uninitialiseSecuredMode() runs on ItsSecurityBaseComponent {
f_unloadCertificates();
} // End of function f_uninitialiseSecuredMode()
function f_initializeState() runs on ItsPkiItss {
var Oct8 v_hashedId8ToBeUsed := f_setupIutCertificate(vc_hashedId8ToBeUsed);
f_utInitializeIut(UtPkiInitialize: { v_hashedId8ToBeUsed } );
f_sleep(PX_NEIGHBOUR_DISCOVERY_DELAY);
// f_acLoadScenario(p_scenario);
// f_acStartScenario();
}
group ac_port {
function f_sendAcPkiPrimitive(
in octetstring p_private_key,
in octetstring p_publicKeyCompressed,
in integer p_compressedMode
) runs on ItsPki {
var AcSetSecurityData v_ac_set_security_data;
v_ac_set_security_data := { p_certificate, PICS_IUT_CERTIFICATE_ID, p_private_key, p_publicKeyCompressed, p_compressedMode };
acPort.send(AcPkiPrimitive: { acSetSecurityData := v_ac_set_security_data });
[] acPort.receive(AcPkiResponse: { result := true }) {
[] acPort.receive(AcPkiResponse: { result := false }) {
tc_ac.stop;
log("*** f_sendAcPkiPrimitive: ERROR: Received unexpected message ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] tc_ac.timeout {
log("*** f_sendAcPkiPrimitive: ERROR: Timeout while waiting for adapter control event result ***");
f_selfOrClientSyncAndVerdict("error", e_timeout);
}
} // End of 'alt' statement
} // End of function f_sendAcPkiPrimitive
group ut_port {
function f_utInitializeIut(template (value) UtPkiInitialize p_init) runs on ItsPkiItss {
utPort.send(p_init);
tc_wait.start;
alt {
[] utPort.receive(UtPkiResults: { utPkiInitializeResult := true }) {
tc_wait.stop;
log("*** f_utInitializeIut: INFO: IUT initialized ***");
}
[] utPort.receive {
tc_wait.stop;
log("*** f_utInitializeIut: INFO: IUT could not be initialized ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] tc_wait.timeout {
log("*** f_utInitializeIut: INFO: IUT could not be initialized in time ***");
f_selfOrClientSyncAndVerdict("error", e_timeout);
}
}
} // End of function f_utInitializeIut
function f_sendUtTriggerPrimitive(
in charstring p_cannonicalId,
in Oct1 p_encAlgorithm,
in octetstring p_private_key,
in octetstring p_publicKeyCompressed,
in integer p_compressedMode
) runs on ItsPkiItss {
var TriggerEnrolmentRequest v_ut_trigger_enrolment_request;
var octetstring v_compressed_public_key;
if (p_compressedMode == 2) { // TODO v_compressed_public_key := int2oct(p_compressedMode, 1) & p_publicKeyCompressed?
v_compressed_public_key := '02'O & p_publicKeyCompressed;
} else {
v_compressed_public_key := '03'O & p_publicKeyCompressed;
}
v_ut_trigger_enrolment_request := { p_cannonicalId, p_encAlgorithm, p_private_key, v_compressed_public_key };
utPort.send(UtPkiTrigger: { triggerEnrolmentRequest := v_ut_trigger_enrolment_request });
tc_ac.start;
alt {
[] utPort.receive(UtPkiResults: { utPkiTriggerResult := true }) {
tc_ac.stop;
}
[] utPort.receive(UtPkiResults: { utPkiTriggerResult := false }) {
tc_ac.stop;
log("*** f_sendUtTriggerPrimitive: ERROR: Received unexpected message ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] tc_ac.timeout {
log("*** f_sendAcPkiPrimitive: ERROR: Timeout while waiting for adapter control event result ***");
f_selfOrClientSyncAndVerdict("error", e_timeout);
}
} // End of 'alt' statement
} // End of function f_sendUtTriggerPrimitive
} // End of group ut_port
group http {
out octetstring p_private_key,
out octetstring p_publicKeyCompressed,
out integer p_compressedMode,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data,
out Oct32 p_hash_inner_ec_request_signed_for_pop
) runs on ItsPkiHttp {
var octetstring v_publicKeyX;
var octetstring v_publicKeyY
var InnerEcRequest v_inner_ec_request;
var Ieee1609Dot2Data v_inner_ec_request_signed_for_pop;
var bitstring v_inner_ec_request_signed_for_pop_msg;
if (f_generate_inner_ec_request(p_private_key, p_publicKeyCompressed, p_compressedMode, v_inner_ec_request) == false) {
log("*** f_http_build_inner_ec_request: ERROR: Failed to generate InnerEcRequest ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
// Generate InnerEcRequestSignedForPoP
if (f_generate_inner_ec_request_signed_for_pop(p_private_key, v_inner_ec_request, v_inner_ec_request_signed_for_pop) == false) {
log("*** f_http_build_inner_ec_request: ERROR: Failed to generate InnerEcRequestSignedForPop ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
// Secure InnerEcRequestSignedForPoP message
v_inner_ec_request_signed_for_pop_msg := encvalue(m_etsiTs102941Data_inner_ec_request_signed_for_pop(v_inner_ec_request_signed_for_pop));
// Prepare for getting the 16 most bytes of SHA256 of InnerEcRequestSignedForPop
p_hash_inner_ec_request_signed_for_pop := f_hashWithSha256(bit2oct(v_inner_ec_request_signed_for_pop_msg));
if (f_build_pki_secured_message(vc_eaPrivateKey, valueof(m_signerIdentifier_self), vc_eaHashedId8, p_publicKeyCompressed, p_compressedMode, bit2oct(v_inner_ec_request_signed_for_pop_msg), p_ieee1609dot2_signed_and_encrypted_data) == false) {
log("*** f_http_build_inner_ec_request: ERROR: Failed to generate InnerEcRequestSignedForPop ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
log("*** f_http_build_inner_ec_request: DEBUG: v_inner_ec_request_signed_for_pop_msg= ", v_inner_ec_request_signed_for_pop_msg);
log("*** f_http_build_inner_ec_request: DEBUG: p_ieee1609dot2_signed_and_encrypted_data= ", p_ieee1609dot2_signed_and_encrypted_data);
log("*** f_http_build_inner_ec_request: DEBUG: p_hash_inner_ec_request_signed_for_pop= ", p_hash_inner_ec_request_signed_for_pop);
} // End of function f_http_build_inner_ec_request
function f_http_build_invalid_enrolment_request(
out octetstring p_private_key,
out octetstring p_publicKeyCompressed,
out integer p_compressedMode,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data,
out Oct32 p_hash_inner_ec_request_signed_for_pop
) runs on ItsPkiHttp {
var InnerEcRequest v_inner_ec_request;
var Ieee1609Dot2Data v_inner_ec_request_signed_for_pop;
if (f_generate_inner_ec_request(p_private_key, p_publicKeyCompressed, p_compressedMode, v_inner_ec_request) == false) {
log("*** f_http_build_invalid_enrolment_request: ERROR: Failed to generate InnerEcRequest ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
// Generate InnerEcRequestSignedForPoP
if (f_generate_inner_ec_request_signed_for_pop(p_private_key, v_inner_ec_request, v_inner_ec_request_signed_for_pop) == false) {
log("*** f_http_build_invalid_enrolment_request: ERROR: Failed to generate InnerEcRequestSignedForPop ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
// Secure InnerEcRequestSignedForPoP message
// Get 16 last byte of SHA256 of InnerEcRequestSignedForPop
p_hash_inner_ec_request_signed_for_pop := f_hashWithSha256(int2oct(12345, 32)); // Invalid InnseEcRequestSignedForPop
if (f_build_pki_secured_message(vc_eaPrivateKey, valueof(m_signerIdentifier_self), vc_eaHashedId8, p_publicKeyCompressed, p_compressedMode, bit2oct(encvalue(m_etsiTs102941Data_inner_ec_request_signed_for_pop(v_inner_ec_request_signed_for_pop))), p_ieee1609dot2_signed_and_encrypted_data) == false) {
log("*** f_http_build_invalid_enrolment_request: ERROR: Failed to generate InnerEcRequestSignedForPop ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
log("*** f_http_build_invalid_enrolment_request: DEBUG: p_ieee1609dot2_signed_and_encrypted_data = ", p_ieee1609dot2_signed_and_encrypted_data);
} // End of function f_http_build_invalid_enrolment_request
function f_http_build_inner_at_request(
out octetstring p_private_key,
out octetstring p_publicKeyCompressed,
out integer p_compressedMode,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data,
out HashedId8 p_hash_inner_at_request
) runs on ItsPkiHttp {
// Local variables
} // End of function f_http_build_inner_at_request
out octetstring p_private_key,
out octetstring p_publicKeyCompressed,
out integer p_compressedMode,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data
) runs on ItsPkiHttp {
// Local variables
var AuthorizationValidationRequest v_authorization_validation_request;
var bitstring v_authorization_validation_request_msg;
if (f_generate_authorization_validation_request(vc_eaCertificate, vc_eaHashedId8, p_private_key, p_publicKeyCompressed, p_compressedMode, v_authorization_validation_request) == false) {
log("*** f_http_build_authorization_validation_request: ERROR: Failed to generate AuthorizationValidationRequest ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
if (f_build_pki_secured_message(vc_eaPrivateKey, valueof(m_signerIdentifier_self), vc_eaHashedId8, p_publicKeyCompressed, p_compressedMode, bit2oct(encvalue(m_etsiTs102941Data_authorization_validation_request(v_authorization_validation_request))), p_ieee1609dot2_signed_and_encrypted_data) == false) {
log("*** f_http_build_authorization_validation_request: ERROR: Failed to generate InnerEcRequestSignedForPop ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
log("*** f_http_build_authorization_validation_request: DEBUG: p_ieee1609dot2_signed_and_encrypted_data = ", p_ieee1609dot2_signed_and_encrypted_data);
} // End of function f_http_build_authorization_validation_request
} // End of group http
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group generate_certificates {
function f_generate_ec_certificate(
in octetstring p_private_key,
in InnerEcRequest p_inner_ec_request,
out Certificate p_ec_certificate
) return boolean {
var SequenceOfPsidSsp v_appPermissions := { // ETSI TS 102 965 Table A.1: ETSI ITS standardized ITS-AIDs
valueof(m_appPermissions(36, { bitmapSsp := '830001'O })),
valueof(m_appPermissions(37, { bitmapSsp := '830001'O }))
};
var template (value) EtsiTs103097Certificate v_cert;
var bitstring v_tbs;
var Oct32 v_sig;
var bitstring v_enc_msg;
v_cert := m_etsiTs103097Certificate(
m_issuerIdentifier_sha256AndDigest(f_HashedId8FromSha256(f_hashWithSha256('616263'O))),
m_toBeSignedCertificate_at(
v_appPermissions,
m_verificationKeyIndicator_verificationKey(
m_publicVerificationKey_ecdsaNistP256(
p_inner_ec_request.publicKeys.verificationKey.ecdsaNistP256
)),
m_validityPeriod(
17469212,
m_duration_years(10)
),
m_geographicRegion_identifiedRegion(
{
m_identifiedRegion_country_only(12),
m_identifiedRegion_country_only(34)
}
)
)
);
// Encode it ==> Get octetstring
v_tbs := encvalue(v_cert.toBeSigned);
// Sign the certificate using ECDSA/SHA-256 (NIST p-256)
v_sig := f_signWithEcdsaNistp256WithSha256(bit2oct(v_tbs), int2oct(11, 32), p_private_key);
v_cert.signature_ := m_signature_ecdsaNistP256(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_sig, 0, 32)
),
substr(v_sig, 32, 32)
)
);
log("v_cert= ", v_cert);
p_ec_certificate := valueof(v_cert);
return true;
} // End of function f_generate_ec_certificate
function f_generate_at_certificate(
in octetstring p_private_key,
in InnerEcRequest p_inner_ec_request,
out Certificate p_at_certificate
) return boolean {
var SequenceOfPsidSsp v_appPermissions := { // ETSI TS 102 965 Table A.1: ETSI ITS standardized ITS-AIDs
valueof(m_appPermissions(36, { bitmapSsp := '830001'O })),
valueof(m_appPermissions(37, { bitmapSsp := '830001'O }))
};
var template (value) EtsiTs103097Certificate v_cert;
var bitstring v_tbs;
var Oct32 v_sig;
var bitstring v_enc_msg;
v_cert := m_etsiTs103097Certificate(
m_issuerIdentifier_sha256AndDigest(f_HashedId8FromSha256(f_hashWithSha256('616263'O))),
m_toBeSignedCertificate_at(
v_appPermissions,
m_verificationKeyIndicator_verificationKey(
m_publicVerificationKey_ecdsaNistP256(
p_inner_ec_request.publicKeys.verificationKey.ecdsaNistP256
)),
m_validityPeriod(
17469212,
m_duration_years(10)
),
m_geographicRegion_identifiedRegion(
{
m_identifiedRegion_country_only(12),
m_identifiedRegion_country_only(34)
}
)
)
);
// Encode it ==> Get octetstring
v_tbs := encvalue(v_cert.toBeSigned);
// Sign the certificate using ECDSA/SHA-256 (NIST p-256)
v_sig := f_signWithEcdsaNistp256WithSha256(bit2oct(v_tbs), int2oct(11, 32), p_private_key);
v_cert.signature_ := m_signature_ecdsaNistP256(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_sig, 0, 32)
),
substr(v_sig, 32, 32)
)
);
log("v_cert= ", v_cert);
p_at_certificate := valueof(v_cert);
return true;
} // End of function f_generate_at_certificate
} // End of group generate_certificates
out octetstring p_private_key,
out octetstring p_publicKeyCompressed,
out integer p_compressedMode,
out InnerEcRequest p_inner_ec_request
) return boolean {
var EccP256CurvePoint v_eccP256_curve_point;
log (">>> f_generate_inner_ec_request");
// Generate keys for the certificate to be requested
if (f_generate_key_pair_nistp256(p_private_key, v_publicKeyX, v_publicKeyY, p_publicKeyCompressed, p_compressedMode) == false) {
log ("f_generate_inner_ec_request: failed to generate keys");
return false;
}
if (p_compressedMode == 0) {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_0(p_publicKeyCompressed));
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_1(p_publicKeyCompressed));
log ("f_generate_inner_ec_request: ", v_eccP256_curve_point);
// Build the Proof of Possession InnerEcRequest
p_inner_ec_request := valueof(
m_innerEcRequest(
m_publicVerificationKey_ecdsaNistP256(v_eccP256_curve_point)
),
m_certificateSubjectAttributes(
{ // ETSI TS 102 965 Table A.1: ETSI ITS standardized ITS-AIDs
valueof(m_appPermissions(36, { bitmapSsp := '830001'O })), // TODO Use PIXIT
valueof(m_appPermissions(37, { bitmapSsp := '830001'O })) // TODO Use PIXIT
17469212,
m_duration_years(10) // TODO Use PIXIT
),
{
m_identifiedRegion_country_only(12), // TODO Use PIXIT
m_identifiedRegion_country_only(34) // TODO Use PIXIT
}
),
log ("f_generate_inner_ec_request: ", p_inner_ec_request);
} // End of function f_generate_inner_ec_request
function f_generate_inner_ec_request_signed_for_pop(
in octetstring p_private_key,
in InnerEcRequest p_inner_ec_request,
out Ieee1609Dot2Data p_inner_ec_request_signed_for_pop
) return boolean {
// Local variables
var template (value) EccP256CurvePoint v_eccP256_curve_point;
var octetstring v_encoded_inner_ec_request;
var template (value) ToBeSignedData v_tbs;
var octetstring v_tbs_signed;
// Encode it
v_encoded_inner_ec_request := bit2oct(encvalue(p_inner_ec_request));
// Signed the encoded InnerEcRequestSignedForPop
v_tbs := m_toBeSignedData(
m_signedDataPayload(
m_etsiTs103097Data_unsecured(
v_encoded_inner_ec_request
)
),
m_headerInfo_inner_ec_request(
c_its_aid_SCR,
f_getCurrentTimeUtc()
)
);
// Signed the encoded InnerEcRequestSignedForPop
v_tbs_signed := f_signWithEcdsaNistp256WithSha256(bit2oct(encvalue(v_tbs)), int2oct(0, 32), p_private_key);
// Finalyse signed InnerEcRequestSignedForPop
p_inner_ec_request_signed_for_pop := valueof(
m_etsiTs103097Data_signed(
m_signedData(
sha256,
v_tbs,
m_signerIdentifier_self,
m_signature_ecdsaNistP256(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_tbs_signed, 0, 32)
),
substr(v_tbs_signed, 32, 32)
)
)
)
)
);
return true;
} // End of function f_generate_inner_ec_request_signed_for_pop
function f_generate_inner_ec_response(
in octetstring p_inner_ec_request_hash,
in EtsiTs103097Certificate p_certificate,
out InnerEcResponse p_inner_ec_response
) return boolean {
// Local variables
// Build the Proof of Possession InnerEcResponse
p_inner_ec_response := valueof(
m_innerEcResponse_ok(
substr(p_inner_ec_request_hash, 0, 16),
p_certificate
)
);
return true;
} // End of function f_generate_inner_ec_response
group inner_at_xxx {
function f_generate_inner_at_request(
in Certificate p_ec_certificate,
in octetstring p_private_key,
in Certificate p_ea_certificate,
in HashedId8 p_eaHashedId8,
in boolean p_itss_privacy,
out octetstring p_private_enc_key,
out octetstring p_publicEncKeyCompressed,
out integer p_compressedMode,
out InnerAtRequest p_inner_at_request,
out Ieee1609Dot2Data p_inner_at_request_data
) return boolean {
// Local variables
var octetstring public_enc_key_x;
var octetstring public_enc_key_y;
var template (value) EccP256CurvePoint v_eccP256_curve_point;
var Oct32 v_hmac_key;
var octetstring v_message_to_tag;
var Oct16 v_key_tag;
var octetstring v_whole_certificate_hash;
var octetstring v_hash_shared_at_request;
var template (value) ToBeSignedData v_tbs;
var octetstring v_tbs_signed;
var Ieee1609Dot2Data v_signed_ec_signature;
// Generate encryption keys for the certificate to be requested
if (f_generate_key_pair_nistp256(p_private_enc_key, public_enc_key_x, public_enc_key_y, p_publicEncKeyCompressed, p_compressedMode) == false) {
return false;
}
if (p_compressedMode == 0) {
v_eccP256_curve_point := m_eccP256CurvePoint_compressed_y_0(p_publicEncKeyCompressed);
} else {
v_eccP256_curve_point := m_eccP256CurvePoint_compressed_y_1(p_publicEncKeyCompressed);
}
// Generate 32 octets length secret key
v_hmac_key := f_hashWithSha256(int2oct(f_getCurrentTime(), 12));
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log("v_hmac_key=", v_hmac_key);
// Generate tag based on the concatenation of ???
if (ischosen(p_ec_certificate.toBeSigned.verifyKeyIndicator.verificationKey)) {
if (ischosen(p_ec_certificate.toBeSigned.verifyKeyIndicator.verificationKey.ecdsaNistP256)) {
if (ischosen(p_ec_certificate.toBeSigned.verifyKeyIndicator.verificationKey.ecdsaNistP256.compressed_y_0)) {
v_message_to_tag := '02'O & p_ec_certificate.toBeSigned.verifyKeyIndicator.verificationKey.ecdsaNistP256.compressed_y_0;
} else {
v_message_to_tag := '03'O & p_ec_certificate.toBeSigned.verifyKeyIndicator.verificationKey.ecdsaNistP256.compressed_y_1;
}
} else {
// TODO
/* if (ischosen(p_ec_certificate.verifyKeyIndicator.ecdsaBrainpoolP256.compressed_y_0)) { */
/* v_message_to_tag := '02'O & p_ec_certificate.verifyKeyIndicator.ecdsaBrainpoolP256.compressed_y_0; */
/* } else { */
/* v_message_to_tag := '03'O & p_ec_certificate.verifyKeyIndicator.ecdsaBrainpoolP256.compressed_y_1; */
/* } */
}
} else {
return false;
}
if (p_compressedMode == 0) {
v_message_to_tag := v_message_to_tag & '02'O & p_publicEncKeyCompressed;
} else {
v_message_to_tag := v_message_to_tag & '03'O & p_publicEncKeyCompressed;
}
log("v_message_to_tag=", v_message_to_tag);
v_key_tag := fx_test_hmac_sha256(v_hmac_key, v_message_to_tag); // TODO Rename and use a wrapper function
log("v_key_tag=", v_key_tag);
// Build the SharedAtRequest
p_inner_at_request.publicKeys := valueof(
m_publicKeys(
m_publicVerificationKey_ecdsaNistP256(
p_ec_certificate.toBeSigned.verifyKeyIndicator.verificationKey.ecdsaNistP256
),
m_encryptionKey(
-,
m_publicEncryptionKey_ecdsaNistP256(v_eccP256_curve_point)
)
)
);
p_inner_at_request.hmacKey := v_hmac_key;
p_inner_at_request.sharedAtRequest := valueof(
m_shared_at_request(
p_eaHashedId8,
v_key_tag,
valueof(
m_certificate_subject_attributes( // FIXME Review subjectPermissions
p_ec_certificate.toBeSigned.appPermissions,
{ { subjectPermissions := { all_ := NULL }, minChainLength := 1, chainLengthRange := 0, eeType := '00000000'B } },
p_ec_certificate.toBeSigned.id,
p_ec_certificate.toBeSigned.validityPeriod,
p_ec_certificate.toBeSigned.region,
p_ec_certificate.toBeSigned.assuranceLevel
))));
v_hash_shared_at_request := f_hashWithSha256(bit2oct(encvalue(p_inner_at_request.sharedAtRequest)));
log("v_hash_shared_at_request=", v_hash_shared_at_request);
// Build the ToBeSigned payload
v_tbs := m_toBeSignedData(
m_signedDataPayload_ext(v_hash_shared_at_request),
m_headerInfo_inner_ec_request(
c_its_aid_SCR,
f_getCurrentTimeUtc())
);
// Signed ToBeSigned payload
v_whole_certificate_hash := f_hashWithSha256(bit2oct(encvalue(p_ec_certificate)));
log("v_whole_certificate_hash=", v_whole_certificate_hash);
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v_tbs_signed := f_signWithEcdsaNistp256WithSha256(bit2oct(encvalue(v_tbs)), v_whole_certificate_hash, p_private_key);
v_signed_ec_signature := valueof(
m_etsiTs103097Data_signed(
m_signedData(
sha256,
v_tbs,
m_signerIdentifier_digest(
f_HashedId8FromSha256(
v_whole_certificate_hash
)
),
m_signature_ecdsaNistP256(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_tbs_signed, 0, 32)
),
substr(v_tbs_signed, 32, 32)
)
)
)
)
);
// Encrypt EcSignature with EA certificate
if (p_itss_privacy) {
var octetstring v_public_enc_key;
var integer v_compressed_mode;
var Oct12 v_nonce;
var Oct16 v_authentication_vector;
var Oct16 v_encrypted_sym_key;
var HashedId8 v_recipientId;
var octetstring v_publicEphemeralKeyCompressed;
var integer v_ephemeralKeyModeCompressed;
var octetstring v_enc_signed_ec_signature;
if (ischosen(p_ea_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_0)) {
v_public_enc_key := p_ea_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_0;
v_compressed_mode := 0;
} else if (ischosen(p_ea_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_1)) {
v_public_enc_key := p_ea_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_1;
v_compressed_mode := 1;
} else {
return false;
}
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v_enc_signed_ec_signature := f_encryptWithEciesNistp256WithSha256(bit2oct(encvalue(v_signed_ec_signature)), v_public_enc_key, v_compressed_mode, v_publicEphemeralKeyCompressed, v_ephemeralKeyModeCompressed, v_encrypted_sym_key, v_authentication_vector, v_nonce);
v_recipientId := p_eaHashedId8;
log("v_recipientId=", v_recipientId);
// Fill Certificate template with the public compressed keys (canonical form)
if (v_ephemeralKeyModeCompressed == 0) {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_0(v_publicEphemeralKeyCompressed));
} else {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_1(v_publicEphemeralKeyCompressed));
}
p_inner_at_request.ecSignature := valueof(
m_ec_signature(
m_etsiTs103097Data_encrypted(
m_encryptedData(
{
m_recipientInfo_signedDataRecipInfo(
m_pKRecipientInfo(
v_recipientId,
m_encryptedDataEncryptionKey_eciesNistP256(
m_evciesP256EncryptedKey(
v_eccP256_curve_point,
v_encrypted_sym_key,
v_authentication_vector
))))
},
m_SymmetricCiphertext_aes128ccm(
m_aesCcmCiphertext(
v_nonce,
v_enc_signed_ec_signature
)
)
)
)
)
);
} else {
p_inner_at_request.ecSignature := valueof(m_ec_signature_ext_payload(v_signed_ec_signature));
}
log("p_inner_at_request=", p_inner_at_request);
return true;
} // End of function f_generate_inner_at_request
function f_generate_inner_at_response(
in Certificate p_ec_certificate,
in octetstring p_private_key,
in HashedId8 p_eaHashedId8,
out octetstring p_private_enc_key,
out octetstring p_publicEncKeyX,
out octetstring p_publicEncKeyY,
out octetstring p_publicEncKeyCompressed,
out integer p_compressedMode,
out InnerAtRequest p_inner_at_request,
out Ieee1609Dot2Data p_inner_at_request_data
) return boolean {
// Local variables
return false;
} // End of function f_generate_inner_at_response
} // End of group inner_at_xxx
group authorization_validation_xxx {
function f_generate_authorization_validation_request(
in Certificate p_ea_certificate,
in HashedId8 p_ea_certificate_hashed_id8,
out octetstring p_private_key,
out octetstring p_publicKeyCompressed,
out integer p_compressedMode,
out AuthorizationValidationRequest p_authorization_validation_request
) return boolean {
// Local variables
var octetstring v_private_enc_key;
var Oct32 v_publicEncKeyCompressed;
var integer v_compressedMode;
var InnerEcRequest v_inner_ec_request;
var Certificate v_ec_certificate;
var InnerAtRequest v_inner_at_request;
var Ieee1609Dot2Data v_inner_at_request_data;
if (f_generate_inner_ec_request(p_private_key, p_publicKeyCompressed, p_compressedMode, v_inner_ec_request) == false) {
return false;
}
if (f_generate_ec_certificate(p_private_key, v_inner_ec_request, v_ec_certificate) == false) {
return false;
}
if (f_generate_inner_at_request(v_ec_certificate, p_private_key, p_ea_certificate, p_ea_certificate_hashed_id8, true, v_private_enc_key, v_publicEncKeyCompressed, v_compressedMode, v_inner_at_request, v_inner_at_request_data) == false) {
return false;
}
p_authorization_validation_request.sharedAtRequest := v_inner_at_request.sharedAtRequest;
p_authorization_validation_request.ecSignature := v_inner_at_request.ecSignature;
log("f_generate_authorization_validation_request: ", p_authorization_validation_request);
} // End of function f_generate_authorization_validation_request
function f_generate_authorization_validation_response(
in octetstring p_authorization_validation_request_hash,
in CertificateSubjectAttributes p_Certificate_subject_attributes,
out AuthorizationValidationResponse p_authorization_validation_response
// Local variables
// Build the Proof of Possession InnerEcResponse
p_authorization_validation_response := valueof(
m_authorizationValidationResponse_ok(
substr(p_authorization_validation_request_hash, 0, 16),
p_Certificate_subject_attributes
)
);
return true;
} // End of function f_generate_authorization_validation_response
} // End of group authorization_validation_xxx
/**
* @desc Build a signed and encrypted PKI message
* @param p_private_key Private key for signature
* @param p_signer_identifier Signer identifier for signature, could be self or certificate HashedId8
* @param p_recipientId Recipient identifier to be inclued in encrypted layer.
* If value is int2oct(0. 8), the recipient id is the HashedId8 of the symmetric key used by the sender to encrypt the message to which the response is built
* @param p_publicKeyCompressed The public compressed key (canonical form) for encryption
* @param p_compressedMode The compressed mode of the public compressed key (canonical form) for encryption
* @param p_pki_message The PKI message to be secured
* @param p_ieee1609dot2_signed_and_encrypted_data The secured message
* @return true on success, false otherwise
*/
in SignerIdentifier p_signer_identifier,
in HashedId8 p_recipientId,
in octetstring p_publicKeyCompressed,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data
) return boolean {
// Local variables
var template (value) EccP256CurvePoint v_eccP256_curve_point;
var template (value) ToBeSignedData v_tbs;
var octetstring v_tbs_signed;
var template (value) Ieee1609Dot2Data v_ieee1609dot2_signed_data;
var Oct12 v_nonce;
var Oct16 v_authentication_vector;
var Oct16 v_encrypted_sym_key;
var HashedId8 v_recipientId;
var octetstring v_publicEphemeralKeyCompressed;
var integer v_ephemeralKeyModeCompressed;
var octetstring v_encrypted_inner_ec_request;
// Signed the encoded PKI message
v_tbs := m_toBeSignedData(
m_signedDataPayload(
m_headerInfo_inner_ec_request(c_its_aid_SCR, f_getCurrentTimeUtc())
if (ischosen(p_signer_identifier.self_)) {
v_tbs_signed := f_signWithEcdsaNistp256WithSha256(bit2oct(encvalue(v_tbs)), int2oct(0, 32), p_private_key);
} else {
var charstring v_certificate_id;
var octetstring v_hash;
fx_readCertificateFromDigest(p_signer_identifier.digest, v_certificate_id); // TODO Add a wrapper function
f_getCertificateHash(v_certificate_id, v_hash);
v_tbs_signed := f_signWithEcdsaNistp256WithSha256(bit2oct(encvalue(v_tbs)), v_hash, p_private_key);
}
// Add the signature and create EtsiTs103097Data-Signed data structure
v_ieee1609dot2_signed_data := m_etsiTs103097Data_signed(
m_signedData(
sha256,
v_tbs,
p_signer_identifier,
m_signature_ecdsaNistP256(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_tbs_signed, 0, 32)
),
substr(v_tbs_signed, 32, 32)
)
)
)
);
// Encode EtsiTs103097Data-Signed data structure
v_encoded_inner_ec_request := bit2oct(encvalue(v_ieee1609dot2_signed_data));
// Encrypt encode EtsiTs103097Data-Signed data structure
v_encrypted_inner_ec_request := f_encryptWithEciesNistp256WithSha256(v_encoded_inner_ec_request, p_publicKeyCompressed, p_compressedMode, v_publicEphemeralKeyCompressed, v_ephemeralKeyModeCompressed, v_encrypted_sym_key, v_authentication_vector, v_nonce);
log("p_recipientId=", p_recipientId);
if (p_recipientId == int2oct(0, 8)) {
log("v_encrypted_sym_key=", v_encrypted_sym_key);
log("f_hashWithSha256(v_encrypted_sym_key=", f_hashWithSha256(v_encrypted_sym_key));
v_recipientId := f_HashedId8FromSha256(f_hashWithSha256(v_encrypted_sym_key));
} else {
v_recipientId := p_recipientId;
}
log("v_recipientId=", v_recipientId);
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// Fill Certificate template with the public compressed keys (canonical form)
if (v_ephemeralKeyModeCompressed == 0) {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_0(v_publicEphemeralKeyCompressed));
} else {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_1(v_publicEphemeralKeyCompressed));
}
p_ieee1609dot2_signed_and_encrypted_data := valueof(
m_etsiTs103097Data_encrypted(
m_encryptedData(
{
m_recipientInfo_signedDataRecipInfo(
m_pKRecipientInfo(
v_recipientId,
m_encryptedDataEncryptionKey_eciesNistP256(
m_evciesP256EncryptedKey(
v_eccP256_curve_point,
v_encrypted_sym_key,
v_authentication_vector
))))
},
m_SymmetricCiphertext_aes128ccm(
m_aesCcmCiphertext(
v_nonce,
v_encrypted_inner_ec_request
)
)
)
)
);
return true;
} // End of function f_build_pki_secured_message
/**
* @desc Verify the protocol element of the Pki message
* @param p_private_key Private key for encryption
* @param p_issuer Issuer