Newer
Older
return false;
}
} else if (ischosen(p_ctl_entry.dc)) {
if (match(p_ctl_entry.dc, mw_dc_entry) == false) {
return false;
}
} else if (ischosen(p_ctl_entry.tlm)) {
if (match(p_ctl_entry.tlm, mw_tlm_entry(mw_etsiTs103097Certificate)) == false) {
return false;
}
} else {
return false;
}
return true;
}
} // End of group rca
group awaiting_messages {
function f_await_http_inner_ec_request_response(
out Oct32 p_private_key,
out Oct32 p_compressed_public_key,
out integer p_compressed_mode,
out InnerEcResponse p_inner_ec_response,
in boolean p_strict_checks := true
) runs on ItsPkiHttp return boolean {
var HeaderLines v_headers;
var Oct32 v_request_hash;
var Oct16 v_encrypted_sym_key;
var Oct16 v_aes_sym_key;
var HashedId8 v_aes_sym_key_hashed_id8;
var Oct16 v_authentication_vector;
var Oct12 v_nonce;
var octetstring v_salt;
var Ieee1609Dot2Data v_ieee1609dot2_signed_and_encrypted_data;
var EtsiTs102941Data v_etsi_ts_102941_data;
var HttpMessage v_response;
log(">>> f_await_http_inner_ec_request_response: p_strict_checks=", p_strict_checks);
f_http_build_inner_ec_request(p_private_key, p_compressed_public_key, p_compressed_mode, v_aes_sym_key, v_encrypted_sym_key, v_authentication_vector, v_nonce, v_salt, v_ieee1609dot2_signed_and_encrypted_data, v_request_hash);
v_aes_sym_key_hashed_id8 := f_HashedId8FromSha256(f_hashWithSha256('80'O & v_aes_sym_key)); // Used to macth the response
f_init_default_headers_list(-, "inner_ec_request", v_headers);
f_http_send(
v_headers,
m_http_request(
m_http_request_post(
PICS_HTTP_POST_URI_EC,
v_headers,
m_http_message_body_binary(
m_binary_body_ieee1609dot2_data(
v_ieee1609dot2_signed_and_encrypted_data
)))));
[] a_await_ec_http_request_from_iut(
mw_http_response(
mw_http_response_ok(
mw_http_message_body_binary(
mw_binary_body_ieee1609dot2_data(
mw_enrolmentResponseMessage(
mw_encryptedData(
{ *, mw_recipientInfo_pskRecipInfo(v_aes_sym_key_hashed_id8), * },
mw_SymmetricCiphertext_aes128ccm
)))))),
v_response
) {
if (f_verify_pki_response_message(p_private_key, v_aes_sym_key, v_authentication_vector, vc_eaWholeHash, v_response.response.body.binary_body.ieee1609dot2_data, p_strict_checks, -, v_etsi_ts_102941_data) == false) {
log("f_await_http_inner_ec_request_response: Failed to verify PKI message ***");
log("f_await_http_inner_ec_request_response: Receive ", v_etsi_ts_102941_data, " ***");
// Verify the received EC certificate
log("f_await_http_inner_ec_request_response: match ", match(v_etsi_ts_102941_data.content, mw_enrolmentResponse(mw_innerEcResponse_ok(substr(v_request_hash, 0, 16), mw_etsiTs103097Certificate(-, mw_toBeSignedCertificate_ec)))), " ***"); // TODO In TITAN, this is the only way to get the unmatching in log
if (match(v_etsi_ts_102941_data.content, mw_enrolmentResponse(mw_innerEcResponse_ok(substr(v_request_hash, 0, 16), mw_etsiTs103097Certificate(-, mw_toBeSignedCertificate_ec)))) == false) {
log("f_await_http_inner_ec_request_response: Unexpected message received ***");
if (p_strict_checks) {
return false;
}
}
Yann Garcia
committed
if (ischosen(v_etsi_ts_102941_data.content.enrolmentResponse) and ispresent(v_etsi_ts_102941_data.content.enrolmentResponse.certificate)) {
if (f_verify_ec_certificate(v_etsi_ts_102941_data.content.enrolmentResponse.certificate, vc_eaCertificate, p_compressed_public_key, p_compressed_mode) == false) {
log("f_await_http_inner_ec_request_response: Cannot verify EC certificate signature ***");
if (p_strict_checks) {
return false;
p_inner_ec_response := v_etsi_ts_102941_data.content.enrolmentResponse;
log("f_await_http_inner_ec_request_response: Well-secured EA certificate received ***");
log("p_inner_ec_response= ", p_inner_ec_response);
} else {
log("f_await_http_inner_ec_request_response: Invalid message received ***");
return false;
}
[] tc_ac.timeout {
log("f_await_http_inner_ec_request_response: Expected message not received ***");
}
} // End of 'alt' statement
} // End of function f_await_http_inner_ec_request_response
function f_await_ec_request_send_response(
out InnerEcResponse p_inner_ec_response
) runs on ItsPkiHttp return boolean {
var HttpMessage v_request;
var boolean v_result := false;
log(">>> f_await_ec_request_send_response");
tc_ac.start;
alt {
[] a_await_ec_http_request_from_iut(
mw_http_request(
mw_http_request_post(
PICS_HTTP_POST_URI_EC,
-,
mw_http_message_body_binary(
mw_binary_body_ieee1609dot2_data(
mw_enrolmentRequestMessage(
mw_encryptedData(
-,
mw_SymmetricCiphertext_aes128ccm
)))))),
v_request
) {
var Ieee1609Dot2Data v_ieee1609dot2_signed_and_encrypted_data;
var EtsiTs102941Data v_etsi_ts_102941_data;
var Oct16 v_request_hash;
var Oct16 v_aes_enc_key;
var InnerEcRequest v_inner_ec_request;
var template (value) HttpMessage v_response;
var HeaderLines v_headers;
tc_ac.stop;
f_init_default_headers_list(-, "inner_ec_response", v_headers);
if (f_verify_pki_request_message(vc_eaPrivateEncKey, vc_eaWholeHash/*salt*/, ''O, v_request.request.body.binary_body.ieee1609dot2_data, false, v_request_hash, v_etsi_ts_102941_data, v_aes_enc_key) == false) { // Cannot decrypt the message
log("f_await_ec_request_send_response: Failed to verify PKI message ***");
// Send error message
v_response := m_http_response(m_http_response_ko(m_http_message_body_binary(m_binary_body_ieee1609dot2_data(v_ieee1609dot2_signed_and_encrypted_data)), v_headers, 400, "Bad request")); // Initialize v_reponse with an error message
} else {
log("f_await_ec_request_send_response: Receive ", v_etsi_ts_102941_data, " ***");
if (f_verify_inner_ec_request_signed_for_pop(v_etsi_ts_102941_data, v_inner_ec_request) == false) {
log("f_await_ec_request_send_response: Failed to verify PKI message ***");
// Send error message
f_http_build_inner_ec_response(v_inner_ec_request/*Not required*/, cantparse, v_request_hash, -, -, v_aes_enc_key, p_inner_ec_response, v_ieee1609dot2_signed_and_encrypted_data);
v_response := m_http_response(m_http_response_ok(m_http_message_body_binary(m_binary_body_ieee1609dot2_data(v_ieee1609dot2_signed_and_encrypted_data)), v_headers));
} else {
f_http_build_inner_ec_response(v_inner_ec_request, ok, v_request_hash, vc_eaPrivateKey, vc_eaWholeHash, v_aes_enc_key, p_inner_ec_response, v_ieee1609dot2_signed_and_encrypted_data);
v_response := m_http_response(m_http_response_ok(m_http_message_body_binary(m_binary_body_ieee1609dot2_data(v_ieee1609dot2_signed_and_encrypted_data)), v_headers));
}
}
[] tc_ac.timeout {
log("f_await_ec_request_send_response: Expected message not received ***");
}
} // End of 'alt' statement
return v_result;
} // End of function f_await_ec_request_send_response
* @desc Build a signed and encrypted PKI request 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
* @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_request_message_signed_with_pop(
in octetstring p_private_key,
in SignerIdentifier p_signer_identifier,
in HashedId8 p_recipientId,
in octetstring p_public_key_compressed,
in integer p_compressed_mode,
in octetstring p_salt,
in octetstring p_pki_message,
in SecurityAlg p_enc_algorithm, // TODO Use RCA to check encryption alg
in boolean p_alter_signature := false,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data,
out Oct16 p_aes_sym_key,
out Oct16 p_encrypted_sym_key,
out Oct16 p_authentication_vector,
out Oct12 p_nonce,
out Oct32 p_request_hash
) return boolean {
// Local variables
var template (value) EccP256CurvePoint v_eccP256_curve_point;
var template (value) ToBeSignedData v_tbs;
var octetstring v_tbs_signed;
var Signature v_signature;
var template (value) Ieee1609Dot2Data v_ieee1609dot2_signed_data;
var octetstring v_encoded_request;
var HashedId8 v_recipientId;
var octetstring v_public_compressed_ephemeral_key;
var integer v_public_compressed_ephemeral_mode;
var octetstring v_encrypted_request;
var EncryptedDataEncryptionKey v_encrypted_data_encryption_key;
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_private_key= ", p_private_key);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_signer_identifier= ", p_signer_identifier);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_recipientId= ", p_recipientId);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_public_key_compressed= ", p_public_key_compressed);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_salt= ", p_salt);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_pki_message= ", p_pki_message);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_enc_algorithm= ", p_enc_algorithm);
log(">>> f_build_pki_secured_request_message_signed_with_pop: p_alter_signature= ", p_alter_signature);
// Signed the encoded PKI message
v_tbs := m_toBeSignedData(
m_signedDataPayload(
m_headerInfo_inner_pki_request(-, (f_getCurrentTime() * 1000)/*us*/)
log("f_build_pki_secured_request_message_signed_with_pop: signer: ", p_signer_identifier);
v_tbs_signed := f_signWithEcdsa(bit2oct(encvalue(v_tbs)), int2oct(0, 32), p_private_key);
} else {
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_signWithEcdsa(bit2oct(encvalue(v_tbs)), v_hash, p_private_key);
log("f_build_pki_secured_request_message_signed_with_pop: lengthof(v_tbs_signed)= ", lengthof(v_tbs_signed));
log("f_build_pki_secured_request_message_signed_with_pop: v_tbs_signed= ", v_tbs_signed);
if (p_alter_signature == true) {
v_tbs_signed[0] := '0A'O;
v_tbs_signed[1] := '0A'O;
log("f_build_pki_secured_request_message_signed_with_pop: Altered signature= ", v_tbs_signed);
}
// Add the signature and create EtsiTs103097Data-Signed data structure
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
if (PX_VE_ALG == e_nist_p256) {
v_signature := valueof(
m_signature_ecdsaNistP256(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_tbs_signed, 0, 32)
),
substr(v_tbs_signed, 32, 32)
)
)
);
} else if (PX_VE_ALG == e_brainpool_p256_r1) {
v_signature := valueof(
m_signature_ecdsaBrainpoolP256r1(
m_ecdsaP256Signature(
m_eccP256CurvePoint_x_only(
substr(v_tbs_signed, 0, 32)
),
substr(v_tbs_signed, 32, 32)
)
)
);
} else if (PX_VE_ALG == e_brainpool_p384_r1) {
v_signature := valueof(
m_signature_ecdsaBrainpoolP384r1(
m_ecdsaP384Signature(
m_eccP384CurvePoint_x_only(
substr(v_tbs_signed, 0, 48)
),
substr(v_tbs_signed, 48, 48)
)
)
);
}
log("f_build_pki_secured_request_message_signed_with_pop: v_signature= ", v_signature);
v_ieee1609dot2_signed_data := m_etsiTs103097Data_signed(
m_signedData(
sha256,
v_tbs,
p_signer_identifier,
// Encode EtsiTs103097Data-Signed data structure
v_encoded_request := bit2oct(encvalue(v_ieee1609dot2_signed_data));
// Encrypt encode EtsiTs103097Data-Signed data structure
if (PICS_SEC_FIXED_KEYS) {
p_salt := '77C0637C3558B3238FDE1EEC376DA080BE4076FB8491CA0F8C19FD34DF298CEB'O;
}
v_encrypted_request := f_encryptWithEciesNistp256WithSha256(v_encoded_request, p_public_key_compressed, p_compressed_mode, p_salt, v_public_compressed_ephemeral_key, v_public_compressed_ephemeral_mode, p_aes_sym_key, p_encrypted_sym_key, p_authentication_vector, p_nonce, PICS_SEC_FIXED_KEYS);
} else if (p_enc_algorithm == e_brainpool_p256_r1) {
v_encrypted_request := f_encryptWithEciesBrainpoolp256WithSha256(v_encoded_request, p_public_key_compressed, p_compressed_mode, p_salt, v_public_compressed_ephemeral_key, v_public_compressed_ephemeral_mode, p_aes_sym_key, p_encrypted_sym_key, p_authentication_vector, p_nonce, PICS_SEC_FIXED_KEYS);
} else {
log("f_build_pki_secured_request_message_signed_with_pop: Wrong encryption variant");
return false;
}
log("f_build_pki_secured_request_message_signed_with_pop: p_aes_sym_key= ", p_aes_sym_key);
log("f_build_pki_secured_request_message_signed_with_pop: p_encrypted_sym_key= ", p_encrypted_sym_key);
log("f_build_pki_secured_request_message_signed_with_pop: p_authentication_vector= ", p_authentication_vector);
log("f_build_pki_secured_request_message_signed_with_pop: p_nonce= ", p_nonce);
log("f_build_pki_secured_request_message_signed_with_pop: p_recipientId= ", p_recipientId);
if (p_recipientId == int2oct(0, 8)) {
log("f_build_pki_secured_request_message_signed_with_pop: f_hashWithSha256(v_encrypted_sym_key)= ", f_hashWithSha256(p_encrypted_sym_key));
v_recipientId := f_HashedId8FromSha256(f_hashWithSha256(p_encrypted_sym_key));
} else {
v_recipientId := p_recipientId;
}
log("f_build_pki_secured_request_message_signed_with_pop: v_recipientId= ", v_recipientId);
// Fill Certificate template with the public compressed keys (canonical form)
if (v_public_compressed_ephemeral_mode == 0) {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_0(v_public_compressed_ephemeral_key));
} else {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_1(v_public_compressed_ephemeral_key));
}
v_encrypted_data_encryption_key := valueof(
m_encryptedDataEncryptionKey_eciesNistP256(
m_evciesP256EncryptedKey(
v_eccP256_curve_point,
p_encrypted_sym_key,
p_authentication_vector
)));
} else if (p_enc_algorithm == 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
)));
} else {
log("f_build_pki_secured_request_message_signed_with_pop: Wrong encryption variant");
return false;
}
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_signed_with_pop: p_request_hash= ", p_request_hash);
log("<<< f_build_pki_secured_request_message_signed_with_pop: ", p_pki_message);
return true;
} // End of function f_build_pki_secured_request_message_signed_with_pop
/**
* @desc Build a signed and encrypted PKI request message without POP with signature
* @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
* @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_request_message(
in HashedId8 p_recipientId,
in octetstring p_public_key_compressed,
in integer p_compressed_mode,
in octetstring p_salt,
in octetstring p_pki_message,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data,
out Oct16 p_aes_sym_key,
out Oct16 p_encrypted_sym_key,
out Oct16 p_authentication_vector,
out Oct12 p_nonce,
out Oct32 p_request_hash
) return boolean {
// Local variables
var template (value) EccP256CurvePoint v_eccP256_curve_point;
var HashedId8 v_recipientId;
var octetstring v_public_compressed_ephemeral_key;
var integer v_public_compressed_ephemeral_mode;
var octetstring v_encrypted_request;
var EncryptedDataEncryptionKey v_encrypted_data_encryption_key;
log(">>> f_build_pki_secured_request_message");
// Encrypt encode EtsiTs103097Data-Signed data structure
p_salt := '77C0637C3558B3238FDE1EEC376DA080BE4076FB8491CA0F8C19FD34DF298CEB'O;
v_encrypted_request := f_encryptWithEciesNistp256WithSha256(p_pki_message, p_public_key_compressed, p_compressed_mode, p_salt, v_public_compressed_ephemeral_key, v_public_compressed_ephemeral_mode, p_aes_sym_key, p_encrypted_sym_key, p_authentication_vector, p_nonce, PICS_SEC_FIXED_KEYS);
} else if (p_enc_algorithm == e_brainpool_p256_r1) {
v_encrypted_request := f_encryptWithEciesBrainpoolp256WithSha256(p_pki_message, p_public_key_compressed, p_compressed_mode, p_salt, v_public_compressed_ephemeral_key, v_public_compressed_ephemeral_mode, p_aes_sym_key, p_encrypted_sym_key, p_authentication_vector, p_nonce, PICS_SEC_FIXED_KEYS);
} else {
log("f_build_pki_secured_request_message: Wrong encryption variant");
return false;
}
log("f_build_pki_secured_request_message: p_aes_sym_key= ", p_aes_sym_key);
log("f_build_pki_secured_request_message: p_encrypted_sym_key= ", p_encrypted_sym_key);
log("f_build_pki_secured_request_message: p_authentication_vector= ", p_authentication_vector);
log("f_build_pki_secured_request_message: p_nonce= ", p_nonce);
log("f_build_pki_secured_request_message: p_recipientId= ", p_recipientId);
if (p_recipientId == int2oct(0, 8)) {
log("f_build_pki_secured_request_message: f_hashWithSha256(v_encrypted_sym_key)= ", f_hashWithSha256(p_encrypted_sym_key));
v_recipientId := f_HashedId8FromSha256(f_hashWithSha256(p_encrypted_sym_key));
} else {
v_recipientId := p_recipientId;
}
log("f_build_pki_secured_request_message: v_recipientId= ", v_recipientId);
// Fill Certificate template with the public compressed keys (canonical form)
if (v_public_compressed_ephemeral_mode == 0) {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_0(v_public_compressed_ephemeral_key));
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_1(v_public_compressed_ephemeral_key));
v_encrypted_data_encryption_key := valueof(
m_encryptedDataEncryptionKey_eciesNistP256(
m_evciesP256EncryptedKey(
v_eccP256_curve_point,
p_encrypted_sym_key,
p_authentication_vector
)));
} else if (p_enc_algorithm == 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(
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);
} // End of function f_build_pki_secured_request_message
function f_build_pki_secured_request_message_for_authorization(
in HashedId8 p_recipientId,
in octetstring p_public_key_compressed,
in integer p_compressed_mode,
in octetstring p_salt,
in octetstring p_pki_message,
out Ieee1609Dot2Data p_ieee1609dot2_signed_and_encrypted_data,
out Oct16 p_aes_sym_key,
out Oct16 p_encrypted_sym_key,
out Oct16 p_authentication_vector,
out Oct12 p_nonce,
out Oct32 p_request_hash
) return boolean {
// Local variables
var Ieee1609Dot2Data v_unsecured_data;
var octetstring v_pki_message;
var template (value) EccP256CurvePoint v_eccP256_curve_point;
var HashedId8 v_recipientId;
var octetstring v_public_compressed_ephemeral_key;
var integer v_public_compressed_ephemeral_mode;
var octetstring v_encrypted_request;
var EncryptedDataEncryptionKey v_encrypted_data_encryption_key;
var bitstring v_enc_value;
log(">>> f_build_pki_secured_request_message_for_authorization");
// Add Ieee1609Dot2Data layer
v_unsecured_data := valueof(m_etsiTs103097Data_unsecured(p_pki_message));
v_pki_message := bit2oct(encvalue(v_unsecured_data));
// Encrypt encode EtsiTs103097Data-Signed data structure
if (PICS_SEC_FIXED_KEYS) {
p_salt := '77C0637C3558B3238FDE1EEC376DA080BE4076FB8491CA0F8C19FD34DF298CEB'O;
}
v_encrypted_request := f_encryptWithEciesNistp256WithSha256(v_pki_message, p_public_key_compressed, p_compressed_mode, p_salt, v_public_compressed_ephemeral_key, v_public_compressed_ephemeral_mode, p_aes_sym_key, p_encrypted_sym_key, p_authentication_vector, p_nonce, PICS_SEC_FIXED_KEYS);
} else if (p_enc_algorithm == e_brainpool_p256_r1) {
v_encrypted_request := f_encryptWithEciesBrainpoolp256WithSha256(v_pki_message, p_public_key_compressed, p_compressed_mode, p_salt, v_public_compressed_ephemeral_key, v_public_compressed_ephemeral_mode, p_aes_sym_key, p_encrypted_sym_key, p_authentication_vector, p_nonce, PICS_SEC_FIXED_KEYS);
} else {
log("f_build_pki_secured_request_message_for_authorization: Wrong encryption variant");
log("f_build_pki_secured_request_message_for_authorization: p_aes_sym_key= ", p_aes_sym_key);
log("f_build_pki_secured_request_message_for_authorization: p_encrypted_sym_key= ", p_encrypted_sym_key);
log("f_build_pki_secured_request_message_for_authorization: p_authentication_vector= ", p_authentication_vector);
log("f_build_pki_secured_request_message_for_authorization: p_nonce= ", p_nonce);
log("f_build_pki_secured_request_message_for_authorization: p_recipientId= ", p_recipientId);
if (p_recipientId == int2oct(0, 8)) {
log("f_build_pki_secured_request_message_for_authorization: f_hashWithSha256(v_encrypted_sym_key)= ", f_hashWithSha256(p_encrypted_sym_key));
v_recipientId := f_HashedId8FromSha256(f_hashWithSha256(p_encrypted_sym_key));
} else {
v_recipientId := p_recipientId;
}
log("f_build_pki_secured_request_message_for_authorization: v_recipientId= ", v_recipientId);
// Fill Certificate template with the public compressed keys (canonical form)
if (v_public_compressed_ephemeral_mode == 0) {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_0(v_public_compressed_ephemeral_key));
} else {
v_eccP256_curve_point := valueof(m_eccP256CurvePoint_compressed_y_1(v_public_compressed_ephemeral_key));
}
v_encrypted_data_encryption_key := valueof(
m_encryptedDataEncryptionKey_eciesNistP256(
m_evciesP256EncryptedKey(
v_eccP256_curve_point,
p_encrypted_sym_key,
p_authentication_vector
)));
} else if (p_enc_algorithm == e_brainpool_p256_r1) {
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
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_for_authorization: p_request_hash= ", p_request_hash);
log("<<< f_build_pki_secured_request_message_for_authorization: ", 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
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
* @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_pki_response(-, (f_getCurrentTime() * 1000)/*us*/)
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
);
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
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
/**
* @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;
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
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 (p_issuer == ''O) { // self
log("f_verify_pki_request_message: Issuer is self, check outer signature using IUT public key (PICS_ITS_S_SIGN_xxx_PUBLIC_KEY)");
var PublicVerificationKey v_verification_key;
if (PX_VE_ALG == e_nist_p256) {
if (PICS_ITS_S_SIGN_NISTP256_PUBLIC_KEY[0] == '02'O) {
v_verification_key.ecdsaNistP256.compressed_y_0 := substr(PICS_ITS_S_SIGN_NISTP256_PUBLIC_KEY, 1, 32);
} else {
v_verification_key.ecdsaNistP256.compressed_y_1 := substr(PICS_ITS_S_SIGN_NISTP256_PUBLIC_KEY, 1, 32);
}
} else if (PX_VE_ALG == e_brainpool_p256_r1) {
Yann Garcia
committed
if (PICS_ITS_S_SIGN_BRAINPOOLP256r1_PUBLIC_KEY[0] == '02'O) {
v_verification_key.ecdsaBrainpoolP256r1.compressed_y_0 := substr(PICS_ITS_S_SIGN_BRAINPOOLP256r1_PUBLIC_KEY, 1, 32);
Yann Garcia
committed
v_verification_key.ecdsaBrainpoolP256r1.compressed_y_1 := substr(PICS_ITS_S_SIGN_BRAINPOOLP256r1_PUBLIC_KEY, 1, 32);
}
} else if (PX_VE_ALG == e_brainpool_p384_r1) {
Yann Garcia
committed
if (PICS_ITS_S_SIGN_BRAINPOOLP384r1_PUBLIC_KEY[0] == '02'O) {
v_verification_key.ecdsaBrainpoolP384r1.compressed_y_0 := substr(PICS_ITS_S_SIGN_BRAINPOOLP384r1_PUBLIC_KEY, 1, 48);
Yann Garcia
committed
v_verification_key.ecdsaBrainpoolP384r1.compressed_y_1 := substr(PICS_ITS_S_SIGN_BRAINPOOLP384r1_PUBLIC_KEY, 1, 48);
}
}
log("f_verify_pki_request_message: v_verification_key=", v_verification_key);
if (f_verifyEcdsa(v_msg, p_issuer, v_ieee1609dot2_signed_data.content.signedData.signature_, v_verification_key) == false) {
if (p_check_security == true) {
return false;
}
}
//return false;
if (f_getCertificateFromDigest(f_HashedId8FromSha256(p_issuer), v_certificate, v_certificate_id) == false) {
if (p_check_security == true) {
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) {
if (p_check_security == true) {
return false;
}
}
if (p_etsi_ts_102941_data.version != PkiProtocolVersion) {
if (p_check_security == true) {
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_response_type Response type (0: InnerEcResponse, 1: InnerAtResponse...). Default: 0
* @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,
in integer p_response_type := 0,
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);
log(">>> f_verify_pki_response_message: p_check_security= ", p_check_security);
log(">>> f_verify_pki_response_message: p_response_type= ", p_response_type);
// 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, v_certificate_id) == 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;
}
// 4. Verify EtsiTs103097Data-Signed HeaderInfo
// TODO Parameter p_response_type seems to be useless
if ((p_response_type == 0) or (p_response_type == 1)) { // InnerEcResponse & InnerAtResponse
log("f_verify_pki_response_message: headerInfo matching= ", match(v_ieee1609dot2_signed_data.content.signedData.tbsData.headerInfo, mw_headerInfo_inner_pki_response));
if (match(v_ieee1609dot2_signed_data.content.signedData.tbsData.headerInfo, mw_headerInfo_inner_pki_response) == false) {
if (p_check_security == true) {
return false;
}
}
} // else, no check
// 5. Return the PKI message
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 HashedId8 v_ec_cert_hashed_id8;
// Calculate the HashedId8 of the whole certificate
v_encoded_cert := encvalue(p_ec_certificate);
v_ec_cert_hash := f_hashWithSha256(bit2oct(v_encoded_cert));
log("f_verify_ec_certificate: ==> EC certificate Hash: ", v_ec_cert_hash);
v_ec_cert_hashed_id8 := f_HashedId8FromSha256(v_ec_cert_hash);
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_sha256AndDigest));
if (match(p_ec_certificate.issuer, mw_issuerIdentifier_sha256AndDigest) == false) {
log("f_verify_ec_certificate: Wrong issuer");
if (f_verifyCertificateSignatureWithPublicKey(p_ec_certificate, p_ea_certificate.toBeSigned.verifyKeyIndicator.verificationKey) == false) {
log("f_verify_ec_certificate: Signature not verified");
return false;
// TODO Check that requested information are present
if (f_verifySspPermissions(p_ec_certificate.toBeSigned.appPermissions, p_ea_certificate.toBeSigned.appPermissions) == false) {
log("f_verify_ec_certificate: Ssp permissions 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;