__init__.py 2.9 KB

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  1. # -*- coding: utf-8 -*-
  2. #
  3. # ===================================================================
  4. # The contents of this file are dedicated to the public domain. To
  5. # the extent that dedication to the public domain is not available,
  6. # everyone is granted a worldwide, perpetual, royalty-free,
  7. # non-exclusive license to exercise all rights associated with the
  8. # contents of this file for any purpose whatsoever.
  9. # No rights are reserved.
  10. #
  11. # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  12. # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  13. # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  14. # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  15. # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  16. # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  17. # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  18. # SOFTWARE.
  19. # ===================================================================
  20. __all__ = ['HMAC', 'MD2', 'MD4', 'MD5', 'RIPEMD160', 'SHA1',
  21. 'SHA224', 'SHA256', 'SHA384', 'SHA512',
  22. 'SHA3_224', 'SHA3_256', 'SHA3_384', 'SHA3_512',
  23. 'CMAC', 'Poly1305',
  24. 'cSHAKE128', 'cSHAKE256', 'KMAC128', 'KMAC256',
  25. 'TupleHash128', 'TupleHash256', 'KangarooTwelve',
  26. 'TurboSHAKE128', 'TurboSHAKE256']
  27. def new(name):
  28. """Return a new hash instance, based on its name or
  29. on its ASN.1 Object ID"""
  30. name = name.upper()
  31. if name in ("1.3.14.3.2.26", "SHA1", "SHA-1"):
  32. from . import SHA1
  33. return SHA1.new()
  34. if name in ("2.16.840.1.101.3.4.2.4", "SHA224", "SHA-224"):
  35. from . import SHA224
  36. return SHA224.new()
  37. if name in ("2.16.840.1.101.3.4.2.1", "SHA256", "SHA-256"):
  38. from . import SHA256
  39. return SHA256.new()
  40. if name in ("2.16.840.1.101.3.4.2.2", "SHA384", "SHA-384"):
  41. from . import SHA384
  42. return SHA384.new()
  43. if name in ("2.16.840.1.101.3.4.2.3", "SHA512", "SHA-512"):
  44. from . import SHA512
  45. return SHA512.new()
  46. if name in ("2.16.840.1.101.3.4.2.5", "SHA512-224", "SHA-512-224"):
  47. from . import SHA512
  48. return SHA512.new(truncate='224')
  49. if name in ("2.16.840.1.101.3.4.2.6", "SHA512-256", "SHA-512-256"):
  50. from . import SHA512
  51. return SHA512.new(truncate='256')
  52. if name in ("2.16.840.1.101.3.4.2.7", "SHA3-224", "SHA-3-224"):
  53. from . import SHA3_224
  54. return SHA3_224.new()
  55. if name in ("2.16.840.1.101.3.4.2.8", "SHA3-256", "SHA-3-256"):
  56. from . import SHA3_256
  57. return SHA3_256.new()
  58. if name in ("2.16.840.1.101.3.4.2.9", "SHA3-384", "SHA-3-384"):
  59. from . import SHA3_384
  60. return SHA3_384.new()
  61. if name in ("2.16.840.1.101.3.4.2.10", "SHA3-512", "SHA-3-512"):
  62. from . import SHA3_512
  63. return SHA3_512.new()
  64. else:
  65. raise ValueError("Unknown hash %s" % str(name))