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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 EtsiTs102941MessagesItss 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;
// LibItsSecurity
import from LibItsSecurity_TypesAndValues all;
import from LibItsSecurity_Templates all;
import from LibItsSecurity_Functions all;
import from LibItsSecurity_Pixits all;
// LibItsHttp
import from LibItsHttp_TypesAndValues all;
import from LibItsHttp_TestSystem 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
) runs on ItsPki /* TITAN TODO: system ItsPkiSystem */ {
map(self:pkiPort, system:pkiPort);
map(self:acPkiPort, system:acPkiPort);
f_connect4SelfOrClientSync();
if( not f_loadCertificates(PX_IUT_SEC_CONFIG_NAME) ) {
log("*** INFO: TEST CASE NOW STOPPING ITSELF! ***");
stop;
}
f_prepareCertificates(p_certificateId, vc_aaCertificate, vc_atCertificate);
f_readCertificate(p_certificateId, vc_eaCertificate);
} // 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
) runs on ItsPkiHttp /* TITAN TODO: system ItsPkiHttpSystem */ {
map(self:httpPort, system:httpPort);
f_connect4SelfOrClientSync();
if( not f_loadCertificates(PX_IUT_SEC_CONFIG_NAME) ) {
log("*** INFO: TEST CASE NOW STOPPING ITSELF! ***");
stop;
}
f_prepareCertificates(p_certificateId, vc_aaCertificate, vc_atCertificate);
f_readCertificate(p_certificateId, vc_eaCertificate);
f_readSigningKey(p_certificateId, vc_eaPrivateKey);
f_getCertificateDigest(p_certificateId, vc_eaHashedId8);
/**
* @desc Deletes default configuration
*/
function f_cfDown() runs on ItsPki /* TITAN TODO: system ItsPkiSystem */ {
unmap(self:pkiPort, system:pkiPort);
unmap(self:acPkiPort, system:acPkiPort);
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f_disconnect4SelfOrClientSync();
} // 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();
} // End of function f_cfHttpDown
/**
* @desc Initialise secure mode if required
*/
function f_initialiseSecuredMode() runs on ItsPki {
// Local variables
// Load certificates
if( not f_loadCertificates(PX_IUT_SEC_CONFIG_NAME) ) {
log("*** INFO: TEST CASE NOW STOPPING ITSELF! ***");
stop;
}
} // End of function f_initialiseSecuredMode()
function f_uninitialiseSecuredMode() runs on ItsPki {
f_unloadCertificates();
} // End of function f_uninitialiseSecuredMode()
} // End of pkiConfigurationFunctions
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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 := { PICS_TS_CERTIFICATE_ID, PICS_IUT_CERTIFICATE_ID, p_private_key, p_publicKeyCompressed, p_compressedMode };
acPkiPort.send(AcPkiPrimitive: { acSetSecurityData := v_ac_set_security_data });
tc_ac.start;
alt {
[] acPkiPort.receive(AcPkiResponse: { result := true }) {
tc_ac.stop;
}
[] acPkiPort.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 group ac_port
function f_generate_inner_ec_request(
out Oct32 p_private_key,
out Oct32 p_publicKeyX,
out Oct32 p_publicKeyY,
out Oct32 p_publicKeyCompressed,
out integer p_compressedMode,
out InnerEcRequest p_inner_ec_request
) return boolean {
// Local variables
var template (value) EccP256CurvePoint v_eccP256_curve_point;
// Generate keys for the certificate to be requested
if (f_generate_key_pair_nistp256(p_private_key, p_publicKeyX, p_publicKeyY, p_publicKeyCompressed, p_compressedMode) == false) {
return false;
}
log("p_private_key = ", p_private_key);
log("p_public_key X= ", p_publicKeyX);
log("p_public_key Y= ", p_publicKeyY);
log("p_public_key compressed= ", p_publicKeyCompressed, p_compressedMode);
if (p_compressedMode == 0) {
v_eccP256_curve_point := m_eccP256CurvePoint_compressed_y_0(p_publicKeyCompressed);
} else {
v_eccP256_curve_point := m_eccP256CurvePoint_compressed_y_1(p_publicKeyCompressed);
}
// Build the Proof of Possession InnerEcRequest
p_inner_ec_request := valueof(
m_innerEcRequest(
m_publicKeys(
m_publicVerificationKey_ecdsaNistP256(v_eccP256_curve_point),
m_encryptionKey(
-,
m_publicEncryptionKey_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
m_identifiedRegion_country_only(12), // TODO Use PIXIT
m_identifiedRegion_country_only(34) // TODO Use PIXIT
} // End of function f_generate_inner_ec_request
function f_generate_inner_ec_request_signed_for_pop(
in Oct32 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 Oct32 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,
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);
// 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
} // End of group inner_ec_xxx
group pki_functions {
/**
* @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 Oct32 p_publicKeyCompressed,
in integer p_compressedMode,
in octetstring p_pki_message,
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 Oct32 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 Oct32 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(12345, f_getCurrentTimeUtc()) // TODO Use PIXIT
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
function f_generate_inner_ec_response(
in Oct32 p_inner_ec_request_hashed_id,
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_hashed_id, 0, 16),
p_certificate
)
);
return true;
} // End of function f_generate_inner_ec_response
} // End of group inner_ec_xxx
} // End of module LibItsPki_Functions