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} else if (PX_EC_ALG == e_brainpool_p256_r1) {
v_encrypted_data_encryption_key := valueof(
m_encryptedDataEncryptionKey_eciesBrainpoolP256r1(
m_evciesP256EncryptedKey(
v_eccP256_curve_point,
p_encrypted_sym_key,
p_authentication_vector
)));
}
p_ieee1609dot2_signed_and_encrypted_data := valueof(
m_etsiTs103097Data_encrypted(
m_encryptedData(
{
m_recipientInfo_certRecipInfo(
m_pKRecipientInfo(
v_recipientId,
v_encrypted_data_encryption_key
))
},
m_SymmetricCiphertext_aes128ccm(
m_aesCcmCiphertext(
p_nonce,
v_encrypted_request
)
)
)
)
);
// The 'p_request_hash' shall be the SHA256 digest of the OER representation of the topmost EtsiTs103097Data-Encoded structure
v_enc_value := encvalue(p_ieee1609dot2_signed_and_encrypted_data);
if (PICS_SEC_FIXED_KEYS) {
p_request_hash := '10ED97A2F2933DD3AC55F47022D125E18F5E1AA024613E616A75BA4979EFE318'O;
} else {
p_request_hash := f_hashWithSha256(bit2oct(v_enc_value));
}
log("f_build_pki_secured_request_message: p_request_hash= ", p_request_hash);
log("<<< f_build_pki_secured_request_message: ", p_ieee1609dot2_signed_and_encrypted_data);
return true;
} // End of function f_build_pki_secured_request_message_for_authorization
/**
* @desc Build a signed and encrypted PKI response 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_public_key_compressed The public compressed key (canonical form) for encryption
* @param p_compressed_mode The compressed mode of the public compressed key (canonical form) for encryption
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* @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
*/
function f_build_pki_secured_response_message(
in octetstring p_private_key,
in SignerIdentifier p_signer_identifier,
in octetstring p_pki_message,
in Oct16 p_aes_sym_key,
in Oct12 p_nonce,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data
) return boolean {
// Local variables
var template (value) ToBeSignedData v_tbs;
var octetstring v_tbs_signed;
var template (value) Ieee1609Dot2Data v_ieee1609dot2_signed_data;
var octetstring v_encoded_inner_ec_response;
var HashedId8 v_recipientId;
var octetstring v_encrypted_inner_ec_response;
// Signed the encoded PKI message
v_tbs := m_toBeSignedData(
m_signedDataPayload(
m_etsiTs103097Data_unsecured(p_pki_message)
),
m_headerInfo_inner_ec_response(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_response := bit2oct(encvalue(v_ieee1609dot2_signed_data));
v_encrypted_inner_ec_response := fx_encrypt_aes_128_ccm_test(p_aes_sym_key, p_nonce, v_encoded_inner_ec_response);
v_recipientId := f_HashedId8FromSha256(f_hashWithSha256(p_aes_sym_key));
log("v_recipientId= ", v_recipientId);
// Fill Certificate template with the public compressed keys (canonical form)
p_ieee1609dot2_signed_and_encrypted_data := valueof(
m_etsiTs103097Data_encrypted(
m_encryptedData(
{
m_recipientInfo_pskRecipInfo(
v_recipientId
)
},
m_SymmetricCiphertext_aes128ccm(
m_aesCcmCiphertext(
p_nonce,
v_encrypted_inner_ec_response
)
)
)
)
);
log("<<< f_build_pki_secured_response_message: ", p_ieee1609dot2_signed_and_encrypted_data);
return true;
} // End of function f_build_pki_secured_response_message
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/**
* @desc Verify the protocol element of the Pki message.
* If p_check_security is set to false, only decryption and decoding of the outer message are verified.
* @param p_private_enc_key Private key for decryption
* @param p_salt
* @param p_p_ieee1609dot2_encrypted_and_signed_data
* @param p_check_security Set to true to verify PKI protocol element such as signatures...
* @param p_request_hash The request hash for to be used to build the response
* @param p_etsi_ts_102941_data The EtsiTs102941Data message
* @param p_aes_enc_key The AES 128 encrytion key to be used to encrypt the response
* @return true on success, false otherwise
*/
function f_verify_pki_request_message(
in Oct32 p_private_enc_key,
in Oct32 p_salt,
in octetstring p_issuer,
in Ieee1609Dot2Data p_ieee1609dot2_encrypted_and_signed_data,
in boolean p_check_security := true,
out Oct16 p_request_hash,
out EtsiTs102941Data p_etsi_ts_102941_data,
out Oct16 p_aes_enc_key
) return boolean {
// Local variables
var bitstring v_msg_bit;
var octetstring v_msg;
var Ieee1609Dot2Data v_ieee1609dot2_signed_data;
var Certificate v_certificate;
log(">>> f_verify_pki_request_message: p_private_enc_key= ", p_private_enc_key);
log(">>> f_verify_pki_request_message: p_salt= ", p_salt);
log(">>> f_verify_pki_request_message: p_issuer= ", p_issuer);
// 1. Calculate the request Hash
v_msg := bit2oct(encvalue(p_ieee1609dot2_encrypted_and_signed_data));
log("f_verify_pki_request_message: Encoded request: ", v_msg);
p_request_hash := substr(f_hashWithSha256(v_msg), 0, 16);
log("f_verify_pki_request_message: v_request_hash= ", p_request_hash);
// 2. Decrypt the InnerEcRequest
log("f_verify_pki_request_message: p_private_enc_key= ", p_private_enc_key);
if (f_decrypt(p_private_enc_key, p_ieee1609dot2_encrypted_and_signed_data, p_salt, v_ieee1609dot2_signed_data, p_aes_enc_key) == false) {
log("f_verify_pki_request_message: Failed to decrypt message");
return false;
}
log("f_verify_pki_request_message: v_ieee1609dot2_signed_data= ", v_ieee1609dot2_signed_data);
log("f_verify_pki_request_message: p_aes_enc_key= ", p_aes_enc_key);
// 3. Check basics security
log(
match(
v_ieee1609dot2_signed_data,
mw_etsiTs103097Data_signed(
mw_signedData(
-,
mw_toBeSignedData(
mw_signedDataPayload,
mw_ieee1609Dot2_headerInfo(c_its_aid_SCR)
)
)
)));
if (match(v_ieee1609dot2_signed_data, mw_etsiTs103097Data_signed(mw_signedData(-, mw_toBeSignedData(mw_signedDataPayload)))) == false) {
log("f_verify_pki_request_message: Failed to check basic security");
if (p_check_security == true) {
return false;
}
}
// 4. Verifiy signature
log("f_verify_pki_request_message: v_ieee1609dot2_signed_data.content.signedData.tbsData= ", v_ieee1609dot2_signed_data.content.signedData.tbsData);
v_msg := bit2oct(encvalue(v_ieee1609dot2_signed_data.content.signedData.tbsData));
if (f_getCertificateFromDigest(f_HashedId8FromSha256(p_issuer), v_certificate) == false) {
return false;
}
log("f_verify_pki_request_message: v_certificate= ", v_certificate);
if (f_verifyEcdsa(v_msg, p_issuer, v_ieee1609dot2_signed_data.content.signedData.signature_, v_certificate.toBeSigned.verifyKeyIndicator.verificationKey) == false) {
if (p_check_security == true) {
return false;
}
}
// 4. Return the PKI message
log("f_verify_pki_request_message: v_ieee1609dot2_signed_data.content.signedData.tbsData.payload.data.content.unsecuredData= ", v_ieee1609dot2_signed_data.content.signedData.tbsData.payload.data.content.unsecuredData);
v_msg_bit := oct2bit(v_ieee1609dot2_signed_data.content.signedData.tbsData.payload.data.content.unsecuredData);
if (decvalue(v_msg_bit, p_etsi_ts_102941_data) != 0) {
return false;
}
if (p_etsi_ts_102941_data.version != PkiProtocolVersion) {
return false;
}
log("<<< f_verify_pki_request_message: true");
return true;
} // End of function f_verify_pki_request_message
* @desc Verify the protocol element of the Pki message.
* If p_check_security is set to false, only decryption and decoding of the outer message are verified.
* @param p_private_key Private key for decryption
* @param p_publicEphemeralCompressedKey
* @param p_publicEphemeralCompressedKeyMode
* @param p_issuer Issuer
* @param p_certificate Certificate to use for verification key
* @param p_ieee1609dot2_encrypted_and_signed_data The received encrypted and signed data
* @param p_check_security Set to true to verify PKI protocol element such as signatures...
* @param p_etsi_ts_102941_data The EtsiTs102941Data message
* @return true on success, false otherwise
*/
function f_verify_pki_response_message(
in octetstring p_private_enc_key,
in Oct16 p_aes_sym_key,
in Oct16 p_authentication_vector, // TODO Tobe removed
in octetstring p_issuer,
in Ieee1609Dot2Data p_ieee1609dot2_encrypted_and_signed_data,
in boolean p_check_security := true,
out EtsiTs102941Data p_etsi_ts_102941_data
) return boolean {
var octetstring v_public_enc_key;
var integer v_compressed_enc_key_mode;
var octetstring v_plain_message;
var Ieee1609Dot2Data v_ieee1609dot2_signed_data;
var bitstring v_etsi_ts_102941_data_msg;
var bitstring v_tbs;
var boolean v_ret;
log(">>> f_verify_pki_response_message: p_private_enc_key= ", p_private_enc_key);
log(">>> f_verify_pki_response_message: p_aes_sym_key= ", p_aes_sym_key);
log(">>> f_verify_pki_response_message: p_authentication_vector= ", p_authentication_vector);
log(">>> f_verify_pki_response_message: p_issuer= ", p_issuer);
// TODO Check p_ieee1609dot2_encrypted_and_signed_data.content.encryptedData.recipients[0].pskRecipInfo. See IEEE Std 1609.2-2017 Clause 6.3.34 PreSharedKeyRecipientInfo
// 1. Decrypt the data
v_plain_message := fx_decrypt_aes_128_ccm_test(p_aes_sym_key, p_ieee1609dot2_encrypted_and_signed_data.content.encryptedData.ciphertext.aes128ccm.nonce, p_ieee1609dot2_encrypted_and_signed_data.content.encryptedData.ciphertext.aes128ccm.ccmCiphertext);
if (isbound(v_plain_message) == false) {
return false;
}
log("f_verify_pki_response_message: v_plain_message= ", v_plain_message);
// 2. Decode it
v_tbs := oct2bit(v_plain_message);
if (decvalue(v_tbs, v_ieee1609dot2_signed_data) != 0) {
log("f_verify_pki_response_message: v_ieee1609dot2_signed_data= ", v_ieee1609dot2_signed_data);
log("f_verify_pki_response_message: v_ieee1609dot2_signed_data.content.signedData.tbsData= ", v_ieee1609dot2_signed_data.content.signedData.tbsData);
v_tbs := encvalue(v_ieee1609dot2_signed_data.content.signedData.tbsData);
if (f_getCertificateFromDigest(v_ieee1609dot2_signed_data.content.signedData.signer.digest, v_certificate) == false) {
if (p_check_security == true) {
return false;
}
}
if (f_verifyEcdsa(bit2oct(v_tbs), p_issuer, v_ieee1609dot2_signed_data.content.signedData.signature_, v_certificate.toBeSigned.verifyKeyIndicator.verificationKey) == false) {
if (p_check_security == true) {
return false;
}
log("f_verify_pki_response_message: v_ieee1609dot2_signed_data.content.signedData.tbsData.payload.data.content.unsecuredData= ", v_ieee1609dot2_signed_data.content.signedData.tbsData.payload.data.content.unsecuredData);
v_etsi_ts_102941_data_msg := oct2bit(v_ieee1609dot2_signed_data.content.signedData.tbsData.payload.data.content.unsecuredData);
if (decvalue(v_etsi_ts_102941_data_msg, p_etsi_ts_102941_data) != 0) {
return false;
}
if (p_etsi_ts_102941_data.version != PkiProtocolVersion) {
} // End of function f_verify_pki_response_message
* @desc Verify the EC certificate generated by the EA entity
* @param p_ec_certificate The new EC certificate
* @param p_ea_certificate The certificate issuer
* @param p_public_key_compressed The public compressed key (canonical form) generated for the InnerEcRequest
* @param p_compressed_mode The public compressed key mode
* @return true on success, false otherwise
*/
function f_verify_ec_certificate(
in Certificate p_ec_certificate,
in octetstring p_public_key_compressed,
in integer p_compressed_mode
) return boolean {
var bitstring v_encoded_cert;
var HashedId8 v_ec_cert_hashed_id8;
// Calculate the HashedId8 of the whole certificate
v_encoded_cert := encvalue(p_ec_certificate);
v_ec_cert_hashed_id8 := f_HashedId8FromSha256(f_hashWithSha256(bit2oct(v_encoded_cert)));
log("f_verify_ec_certificate: EC certificate HashedId8: ", v_ec_cert_hashed_id8);
// Check the signer
log("f_verify_ec_certificate: ", match(p_ec_certificate.issuer, mw_issuerIdentifier_self()));
if (match(p_ec_certificate.issuer, mw_issuerIdentifier_self)) {
return false;
}
// Check EC certificate signature
// TODO Who sign the EC certificate?
if (f_verifyCertificateSignatureWithPublicKey(p_ec_certificate, p_ea_certificate.toBeSigned.verifyKeyIndicator.verificationKey) == false) {
log("f_verify_ec_certificate: Signature not verified");
return false;
return true;
} // End of function f_verify_ec_certificate
* @desc Verify the generated AT certificate
* @param p_at_certificate The new AT certificate
* @param p_ea_certificate The certificate issuer
* @param p_public_key_compressed The public compressed key (canonical form) generated for the InnerAtRequest
* @param p_compressed_mode The public compressed key mode
* @return true on success, false otherwise
*/
function f_verify_at_certificate(
in Certificate p_at_certificate,
in Certificate p_aa_certificate,
in octetstring p_public_key_compressed,
in integer p_compressed_mode
) return boolean {
var bitstring v_encoded_cert;
var HashedId8 v_at_cert_hashed_id8;
// Calculate the HashedId8 of the whole certificate
v_encoded_cert := encvalue(p_at_certificate);
v_at_cert_hashed_id8 := f_HashedId8FromSha256(f_hashWithSha256(bit2oct(v_encoded_cert)));
log("f_verify_at_certificate: EC certificate HashedId8: ", v_at_cert_hashed_id8);
// Check the signer
log("f_verify_at_certificate: ", match(p_at_certificate.issuer, mw_issuerIdentifier_self()));
if (match(p_at_certificate.issuer, mw_issuerIdentifier_self)) {
return false;
}
// Check EC certificate signature
// TODO Who sign the EC certificate?
if (f_verifyCertificateSignatureWithPublicKey(p_at_certificate, p_aa_certificate.toBeSigned.verifyKeyIndicator.verificationKey) == false) {
log("f_verify_at_certificate: Signature not verified");
return false;
}
return true;
} // End of function f_verify_at_certificate
group security_function { // TODO To be moved in LibItsSecurity_Function module
function f_extract_enc_key(
in Certificate p_certificate,
out octetstring p_public_enc_key,
out integer p_compressed_enc_key_mode
) return boolean {
log(">>> f_extract_enc_key: ", p_certificate);
if (ischosen(p_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256)) {
if (ischosen(p_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_0)) {
p_public_enc_key := p_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_0;
p_compressed_enc_key_mode := 0;
} else if (ischosen(p_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_1)) {
p_public_enc_key := p_certificate.toBeSigned.encryptionKey.publicKey.eciesNistP256.compressed_y_1;
p_compressed_enc_key_mode := 1;
log("f_extract_enc_key: Non canonical certificate: ", p_certificate);
return false;
}
} else if (ischosen(p_certificate.toBeSigned.encryptionKey.publicKey.eciesBrainpoolP256r1)) {
if (ischosen(p_certificate.toBeSigned.encryptionKey.publicKey.eciesBrainpoolP256r1.compressed_y_0)) {
p_public_enc_key := p_certificate.toBeSigned.encryptionKey.publicKey.eciesBrainpoolP256r1.compressed_y_0;
p_compressed_enc_key_mode := 0;
} else if (ischosen(p_certificate.toBeSigned.encryptionKey.publicKey.eciesBrainpoolP256r1.compressed_y_1)) {
p_public_enc_key := p_certificate.toBeSigned.encryptionKey.publicKey.eciesBrainpoolP256r1.compressed_y_1;
p_compressed_enc_key_mode := 0;
} else {
log("f_extract_enc_key: Non canonical certificate: ", p_certificate);
log("f_extract_enc_key: Invalid certificate: ", p_certificate);
return false;
}
return true;
} // End of function f_extract_enc_key
} // End of group security_function
altstep a_default_pki_http() runs on ItsPkiHttp {
[not(PICS_MULTIPLE_END_POINT)] httpPort.receive(
mw_http_response(
mw_http_response_ko
)) {
tc_ac.stop;
log("*** " & testcasename() & ": FAIL: Unexpected message received ***");
f_selfOrClientSyncAndVerdictTestBody(c_tbDone, e_error);
}
[not(PICS_MULTIPLE_END_POINT)] httpPort.receive(mw_http_request) {
log("*** a_default: ERROR: Unexpected HTTP Request received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[not(PICS_MULTIPLE_END_POINT)] httpPort.receive(mw_http_response) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Response received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[not(PICS_MULTIPLE_END_POINT)] httpPort.receive {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP message received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] a_shutdown() {
log("*** a_default: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
stop;
}
} // End of altstep a_default_pki_http
altstep a_default_pki_http_ec() runs on ItsPkiHttp {
[PICS_MULTIPLE_END_POINT] httpEcPort.receive(
mw_http_response(
mw_http_response_ko
)) {
tc_ac.stop;
log("*** " & testcasename() & ": FAIL: Unexpected message received ***");
f_selfOrClientSyncAndVerdictTestBody(c_tbDone, e_error);
}
[PICS_MULTIPLE_END_POINT] httpEcPort.receive(mw_http_request) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Request received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[PICS_MULTIPLE_END_POINT] httpEcPort.receive(mw_http_response) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Response received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP message received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] a_shutdown() {
log("*** a_default: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
stop;
}
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} // End of altstep a_default_pki_http_ec
altstep a_default_pki_http_atv() runs on ItsPkiHttp {
[PICS_MULTIPLE_END_POINT] httpAtVPort.receive(
mw_http_response(
mw_http_response_ko
)) {
tc_ac.stop;
log("*** " & testcasename() & ": FAIL: Unexpected message received ***");
f_selfOrClientSyncAndVerdictTestBody(c_tbDone, e_error);
}
[PICS_MULTIPLE_END_POINT] httpAtVPort.receive(mw_http_request) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Request received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[PICS_MULTIPLE_END_POINT] httpAtVPort.receive(mw_http_response) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Response received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[PICS_MULTIPLE_END_POINT] httpAtVPort.receive {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP message received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] a_shutdown() {
log("*** a_default: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
stop;
}
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} // End of altstep a_default_pki_http_atv
altstep a_default_pki_http_at() runs on ItsPkiHttp {
[PICS_MULTIPLE_END_POINT] httpAtPort.receive(
mw_http_response(
mw_http_response_ko
)) {
tc_ac.stop;
log("*** " & testcasename() & ": FAIL: Unexpected message received ***");
f_selfOrClientSyncAndVerdictTestBody(c_tbDone, e_error);
}
[PICS_MULTIPLE_END_POINT] httpAtPort.receive(mw_http_request) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Request received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[PICS_MULTIPLE_END_POINT] httpAtPort.receive(mw_http_response) {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP Response received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[PICS_MULTIPLE_END_POINT] httpAtPort.receive {
tc_ac.stop;
log("*** a_default: ERROR: Unexpected HTTP message received ***");
f_selfOrClientSyncAndVerdict("error", e_error);
}
[] a_shutdown() {
log("*** a_default: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
stop;
}
} // End of altstep a_default_pki_http_at
} // End of group altsteps