# Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or # implied. # See the License for the specific language governing permissions and # limitations under the License. from __future__ import absolute_import, division, print_function import collections import os import six import pytest HashVector = collections.namedtuple("HashVector", ["message", "digest"]) KeyedHashVector = collections.namedtuple( "KeyedHashVector", ["message", "digest", "key"] ) def select_backends(names, backend_list): if names is None: return backend_list split_names = [x.strip() for x in names.split(',')] # this must be duplicated and then removed to preserve the metadata # pytest associates. Appending backends to a new list doesn't seem to work selected_backends = [] for backend in backend_list: if backend.name in split_names: selected_backends.append(backend) if len(selected_backends) > 0: return selected_backends else: raise ValueError( "No backend selected. Tried to select: {0}".format(split_names) ) def check_for_iface(name, iface, item): if name in item.keywords and "backend" in item.funcargs: if not isinstance(item.funcargs["backend"], iface): pytest.skip("{0} backend does not support {1}".format( item.funcargs["backend"], name )) def check_backend_support(item): supported = item.keywords.get("supported") if supported and "backend" in item.funcargs: if not supported.kwargs["only_if"](item.funcargs["backend"]): pytest.skip("{0} ({1})".format( supported.kwargs["skip_message"], item.funcargs["backend"] )) elif supported: raise ValueError("This mark is only available on methods that take a " "backend") def load_vectors_from_file(filename, loader): base = os.path.join( os.path.dirname(__file__), "hazmat", "primitives", "vectors", ) with open(os.path.join(base, filename), "r") as vector_file: return loader(vector_file) def load_nist_vectors(vector_data): test_data = None data = [] for line in vector_data: line = line.strip() # Blank lines, comments, and section headers are ignored if not line or line.startswith("#") or (line.startswith("[") and line.endswith("]")): continue if line.strip() == "FAIL": test_data["fail"] = True continue # Build our data using a simple Key = Value format name, value = [c.strip() for c in line.split("=")] # Some tests (PBKDF2) contain \0, which should be interpreted as a # null character rather than literal. value = value.replace("\\0", "\0") # COUNT is a special token that indicates a new block of data if name.upper() == "COUNT": test_data = {} data.append(test_data) continue # For all other tokens we simply want the name, value stored in # the dictionary else: test_data[name.lower()] = value.encode("ascii") return data def load_cryptrec_vectors(vector_data): cryptrec_list = [] for line in vector_data: line = line.strip() # Blank lines and comments are ignored if not line or line.startswith("#"): continue if line.startswith("K"): key = line.split(" : ")[1].replace(" ", "").encode("ascii") elif line.startswith("P"): pt = line.split(" : ")[1].replace(" ", "").encode("ascii") elif line.startswith("C"): ct = line.split(" : ")[1].replace(" ", "").encode("ascii") # after a C is found the K+P+C tuple is complete # there are many P+C pairs for each K cryptrec_list.append({ "key": key, "plaintext": pt, "ciphertext": ct }) else: raise ValueError("Invalid line in file '{}'".format(line)) return cryptrec_list def load_hash_vectors(vector_data): vectors = [] key = None msg = None md = None for line in vector_data: line = line.strip() if not line or line.startswith("#") or line.startswith("["): continue if line.startswith("Len"): length = int(line.split(" = ")[1]) elif line.startswith("Key"): # HMAC vectors contain a key attribute. Hash vectors do not. key = line.split(" = ")[1].encode("ascii") elif line.startswith("Msg"): # In the NIST vectors they have chosen to represent an empty # string as hex 00, which is of course not actually an empty # string. So we parse the provided length and catch this edge case. msg = line.split(" = ")[1].encode("ascii") if length > 0 else b"" elif line.startswith("MD"): md = line.split(" = ")[1] # after MD is found the Msg+MD (+ potential key) tuple is complete if key is not None: vectors.append(KeyedHashVector(msg, md, key)) key = None msg = None md = None else: vectors.append(HashVector(msg, md)) msg = None md = None else: raise ValueError("Unknown line in hash vector") return vectors def load_pkcs1_vectors(vector_data): """ Loads data out of RSA PKCS #1 vector files. """ private_key_vector = None public_key_vector = None attr = None key = None example_vector = None examples = [] vectors = [] for line in vector_data: if ( line.startswith("# PSS Example") or line.startswith("# PKCS#1 v1.5 Signature") ): if example_vector: for key, value in six.iteritems(example_vector): hex_str = "".join(value).replace(" ", "").encode("ascii") example_vector[key] = hex_str examples.append(example_vector) attr = None example_vector = collections.defaultdict(list) if line.startswith("# Message to be signed"): attr = "message" continue elif line.startswith("# Salt"): attr = "salt" continue elif line.startswith("# Signature"): attr = "signature" continue elif ( example_vector and line.startswith("# =============================================") ): for key, value in six.iteritems(example_vector): hex_str = "".join(value).replace(" ", "").encode("ascii") example_vector[key] = hex_str examples.append(example_vector) example_vector = None attr = None elif example_vector and line.startswith("#"): continue else: if attr is not None and example_vector is not None: example_vector[attr].append(line.strip()) continue if ( line.startswith("# Example") or line.startswith("# =============================================") ): if key: assert private_key_vector assert public_key_vector for key, value in six.iteritems(public_key_vector): hex_str = "".join(value).replace(" ", "") public_key_vector[key] = int(hex_str, 16) for key, value in six.iteritems(private_key_vector): hex_str = "".join(value).replace(" ", "") private_key_vector[key] = int(hex_str, 16) private_key_vector["examples"] = examples examples = [] assert ( private_key_vector['public_exponent'] == public_key_vector['public_exponent'] ) assert ( private_key_vector['modulus'] == public_key_vector['modulus'] ) vectors.append( (private_key_vector, public_key_vector) ) public_key_vector = collections.defaultdict(list) private_key_vector = collections.defaultdict(list) key = None attr = None if private_key_vector is None or public_key_vector is None: continue if line.startswith("# Private key"): key = private_key_vector elif line.startswith("# Public key"): key = public_key_vector elif line.startswith("# Modulus:"): attr = "modulus" elif line.startswith("# Public exponent:"): attr = "public_exponent" elif line.startswith("# Exponent:"): if key is public_key_vector: attr = "public_exponent" else: assert key is private_key_vector attr = "private_exponent" elif line.startswith("# Prime 1:"): attr = "p" elif line.startswith("# Prime 2:"): attr = "q" elif line.startswith("# Prime exponent 1:"): attr = "dmp1" elif line.startswith("# Prime exponent 2:"): attr = "dmq1" elif line.startswith("# Coefficient:"): attr = "iqmp" elif line.startswith("#"): attr = None else: if key is not None and attr is not None: key[attr].append(line.strip()) return vectors def load_rsa_nist_vectors(vector_data): test_data = None data = [] for line in vector_data: line = line.strip() # Blank lines and section headers are ignored if not line or line.startswith("["): continue if line.startswith("# Salt len:"): salt_length = int(line.split(":")[1].strip()) continue elif line.startswith("#"): continue # Build our data using a simple Key = Value format name, value = [c.strip() for c in line.split("=")] if name == "n": n = int(value, 16) elif name == "e": e = int(value, 16) elif name == "SHAAlg": test_data = { "modulus": n, "public_exponent": e, "salt_length": salt_length, "algorithm": value.encode("ascii") } data.append(test_data) continue # For all other tokens we simply want the name, value stored in # the dictionary else: test_data[name.lower()] = value.encode("ascii") return data def load_fips_dsa_key_pair_vectors(vector_data): """ Loads data out of the FIPS DSA KeyPair vector files. """ vectors = [] # When the flag is "on" it tells the loader to continue constructing # dictionaries. We turn the flag to "off" during the blocks of the # vectors of N=224 because we don't support it. flag = "on" for line in vector_data: line = line.strip() if not line or line.startswith("#"): continue if line.startswith("[mod = L=1024"): continue if line.startswith("[mod = L=2048, N=224"): flag = "off" continue if line.startswith("[mod = L=2048, N=256"): flag = "on" continue if line.startswith("[mod = L=3072"): continue if flag == "off": continue if flag == "on": if line.startswith("P"): vectors.append({'p': int(line.split("=")[1], 16)}) continue if line.startswith("Q"): vectors[-1]['q'] = int(line.split("=")[1], 16) continue if line.startswith("G"): vectors[-1]['g'] = int(line.split("=")[1], 16) continue if line.startswith("X") and 'x' not in vectors[-1]: vectors[-1]['x'] = int(line.split("=")[1], 16) continue if line.startswith("X") and 'x' in vectors[-1]: vectors.append({'p': vectors[-1]['p'], 'q': vectors[-1]['q'], 'g': vectors[-1]['g'], 'x': int(line.split("=")[1], 16) }) continue if line.startswith("Y"): vectors[-1]['y'] = int(line.split("=")[1], 16) continue return vectors 06 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725