prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Deprecate Whirlpool and RIPEMD
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `src/cryptography/hazmat/primitives/hashes.py`
  Content:
  ```
  1 # This file is dual licensed under the terms of the Apache License, Version
  2 # 2.0, and the BSD License. See the LICENSE file in the root of this repository
  3 # for complete details.
  4 
  5 from __future__ import absolute_import, division, print_function
  6 
  7 import abc
  8 
  9 import six
  10 
  11 from cryptography import utils
  12 from cryptography.exceptions import (
  13     AlreadyFinalized, UnsupportedAlgorithm, _Reasons
  14 )
  15 from cryptography.hazmat.backends.interfaces import HashBackend
  16 
  17 
  18 @six.add_metaclass(abc.ABCMeta)
  19 class HashAlgorithm(object):
  20     @abc.abstractproperty
  21     def name(self):
  22         """
  23         A string naming this algorithm (e.g. "sha256", "md5").
  24         """
  25 
  26     @abc.abstractproperty
  27     def digest_size(self):
  28         """
  29         The size of the resulting digest in bytes.
  30         """
  31 
  32     @abc.abstractproperty
  33     def block_size(self):
  34         """
  35         The internal block size of the hash algorithm in bytes.
  36         """
  37 
  38 
  39 @six.add_metaclass(abc.ABCMeta)
  40 class HashContext(object):
  41     @abc.abstractproperty
  42     def algorithm(self):
  43         """
  44         A HashAlgorithm that will be used by this context.
  45         """
  46 
  47     @abc.abstractmethod
  48     def update(self, data):
  49         """
  50         Processes the provided bytes through the hash.
  51         """
  52 
  53     @abc.abstractmethod
  54     def finalize(self):
  55         """
  56         Finalizes the hash context and returns the hash digest as bytes.
  57         """
  58 
  59     @abc.abstractmethod
  60     def copy(self):
  61         """
  62         Return a HashContext that is a copy of the current context.
  63         """
  64 
  65 
  66 @utils.register_interface(HashContext)
  67 class Hash(object):
  68     def __init__(self, algorithm, backend, ctx=None):
  69         if not isinstance(backend, HashBackend):
  70             raise UnsupportedAlgorithm(
  71                 "Backend object does not implement HashBackend.",
  72                 _Reasons.BACKEND_MISSING_INTERFACE
  73             )
  74 
  75         if not isinstance(algorithm, HashAlgorithm):
  76             raise TypeError("Expected instance of hashes.HashAlgorithm.")
  77         self._algorithm = algorithm
  78 
  79         self._backend = backend
  80 
  81         if ctx is None:
  82             self._ctx = self._backend.create_hash_ctx(self.algorithm)
  83         else:
  84             self._ctx = ctx
  85 
  86     algorithm = utils.read_only_property("_algorithm")
  87 
  88     def update(self, data):
  89         if self._ctx is None:
  90             raise AlreadyFinalized("Context was already finalized.")
  91         if not isinstance(data, bytes):
  92             raise TypeError("data must be bytes.")
  93         self._ctx.update(data)
  94 
  95     def copy(self):
  96         if self._ctx is None:
  97             raise AlreadyFinalized("Context was already finalized.")
  98         return Hash(
  99             self.algorithm, backend=self._backend, ctx=self._ctx.copy()
  100         )
  101 
  102     def finalize(self):
  103         if self._ctx is None:
  104             raise AlreadyFinalized("Context was already finalized.")
  105         digest = self._ctx.finalize()
  106         self._ctx = None
  107         return digest
  108 
  109 
  110 @utils.register_interface(HashAlgorithm)
  111 class SHA1(object):
  112     name = "sha1"
  113     digest_size = 20
  114     block_size = 64
  115 
  116 
  117 @utils.register_interface(HashAlgorithm)
  118 class SHA224(object):
  119     name = "sha224"
  120     digest_size = 28
  121     block_size = 64
  122 
  123 
  124 @utils.register_interface(HashAlgorithm)
  125 class SHA256(object):
  126     name = "sha256"
  127     digest_size = 32
  128     block_size = 64
  129 
  130 
  131 @utils.register_interface(HashAlgorithm)
  132 class SHA384(object):
  133     name = "sha384"
  134     digest_size = 48
  135     block_size = 128
  136 
  137 
  138 @utils.register_interface(HashAlgorithm)
  139 class SHA512(object):
  140     name = "sha512"
  141     digest_size = 64
  142     block_size = 128
  143 
  144 
  145 @utils.register_interface(HashAlgorithm)
  146 class RIPEMD160(object):
  147     name = "ripemd160"
  148     digest_size = 20
  149     block_size = 64
  150 
  151 
  152 @utils.register_interface(HashAlgorithm)
  153 class Whirlpool(object):
  154     name = "whirlpool"
  155     digest_size = 64
  156     block_size = 64
  157 
  158 
  159 @utils.register_interface(HashAlgorithm)
  160 class MD5(object):
  161     name = "md5"
  162     digest_size = 16
  163     block_size = 64
  164 
  165 
  166 @utils.register_interface(HashAlgorithm)
  167 class BLAKE2b(object):
  168     name = "blake2b"
  169     _max_digest_size = 64
  170     _min_digest_size = 1
  171     block_size = 128
  172 
  173     def __init__(self, digest_size):
  174         if (
  175             digest_size > self._max_digest_size or
  176             digest_size < self._min_digest_size
  177         ):
  178             raise ValueError("Digest size must be {0}-{1}".format(
  179                 self._min_digest_size, self._max_digest_size)
  180             )
  181 
  182         self._digest_size = digest_size
  183 
  184     digest_size = utils.read_only_property("_digest_size")
  185 
  186 
  187 @utils.register_interface(HashAlgorithm)
  188 class BLAKE2s(object):
  189     name = "blake2s"
  190     block_size = 64
  191     _max_digest_size = 32
  192     _min_digest_size = 1
  193 
  194     def __init__(self, digest_size):
  195         if (
  196             digest_size > self._max_digest_size or
  197             digest_size < self._min_digest_size
  198         ):
  199             raise ValueError("Digest size must be {0}-{1}".format(
  200                 self._min_digest_size, self._max_digest_size)
  201             )
  202 
  203         self._digest_size = digest_size
  204 
  205     digest_size = utils.read_only_property("_digest_size")
  206
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/src/cryptography/hazmat/primitives/hashes.py b/src/cryptography/hazmat/primitives/hashes.py
  --- a/src/cryptography/hazmat/primitives/hashes.py
  +++ b/src/cryptography/hazmat/primitives/hashes.py
  @@ -149,6 +149,14 @@
       block_size = 64
   
   
  +RIPEMD160 = utils.deprecated(
  +    RIPEMD160,
  +    __name__,
  +    "The RIPEMD160 hash was deprecated in version 1.9.",
  +    utils.DeprecatedIn19
  +)
  +
  +
   @utils.register_interface(HashAlgorithm)
   class Whirlpool(object):
       name = "whirlpool"
  @@ -156,6 +164,14 @@
       block_size = 64
   
   
  +Whirlpool = utils.deprecated(
  +    Whirlpool,
  +    __name__,
  +    "The Whirlpool hash was deprecated in version 1.9.",
  +    utils.DeprecatedIn19
  +)
  +
  +
   @utils.register_interface(HashAlgorithm)
   class MD5(object):
       name = "md5"
  
verification_info: {"golden_diff": "diff --git a/src/cryptography/hazmat/primitives/hashes.py b/src/cryptography/hazmat/primitives/hashes.py\n--- a/src/cryptography/hazmat/primitives/hashes.py\n+++ b/src/cryptography/hazmat/primitives/hashes.py\n@@ -149,6 +149,14 @@\n     block_size = 64\n \n \n+RIPEMD160 = utils.deprecated(\n+    RIPEMD160,\n+    __name__,\n+    \"The RIPEMD160 hash was deprecated in version 1.9.\",\n+    utils.DeprecatedIn19\n+)\n+\n+\n @utils.register_interface(HashAlgorithm)\n class Whirlpool(object):\n     name = \"whirlpool\"\n@@ -156,6 +164,14 @@\n     block_size = 64\n \n \n+Whirlpool = utils.deprecated(\n+    Whirlpool,\n+    __name__,\n+    \"The Whirlpool hash was deprecated in version 1.9.\",\n+    utils.DeprecatedIn19\n+)\n+\n+\n @utils.register_interface(HashAlgorithm)\n class MD5(object):\n     name = \"md5\"\n", "issue": "Deprecate Whirlpool and RIPEMD\n\n", "before_files": [{"content": "# This file is dual licensed under the terms of the Apache License, Version\n# 2.0, and the BSD License. See the LICENSE file in the root of this repository\n# for complete details.\n\nfrom __future__ import absolute_import, division, print_function\n\nimport abc\n\nimport six\n\nfrom cryptography import utils\nfrom cryptography.exceptions import (\n    AlreadyFinalized, UnsupportedAlgorithm, _Reasons\n)\nfrom cryptography.hazmat.backends.interfaces import HashBackend\n\n\n@six.add_metaclass(abc.ABCMeta)\nclass HashAlgorithm(object):\n    @abc.abstractproperty\n    def name(self):\n        \"\"\"\n        A string naming this algorithm (e.g. \"sha256\", \"md5\").\n        \"\"\"\n\n    @abc.abstractproperty\n    def digest_size(self):\n        \"\"\"\n        The size of the resulting digest in bytes.\n        \"\"\"\n\n    @abc.abstractproperty\n    def block_size(self):\n        \"\"\"\n        The internal block size of the hash algorithm in bytes.\n        \"\"\"\n\n\n@six.add_metaclass(abc.ABCMeta)\nclass HashContext(object):\n    @abc.abstractproperty\n    def algorithm(self):\n        \"\"\"\n        A HashAlgorithm that will be used by this context.\n        \"\"\"\n\n    @abc.abstractmethod\n    def update(self, data):\n        \"\"\"\n        Processes the provided bytes through the hash.\n        \"\"\"\n\n    @abc.abstractmethod\n    def finalize(self):\n        \"\"\"\n        Finalizes the hash context and returns the hash digest as bytes.\n        \"\"\"\n\n    @abc.abstractmethod\n    def copy(self):\n        \"\"\"\n        Return a HashContext that is a copy of the current context.\n        \"\"\"\n\n\n@utils.register_interface(HashContext)\nclass Hash(object):\n    def __init__(self, algorithm, backend, ctx=None):\n        if not isinstance(backend, HashBackend):\n            raise UnsupportedAlgorithm(\n                \"Backend object does not implement HashBackend.\",\n                _Reasons.BACKEND_MISSING_INTERFACE\n            )\n\n        if not isinstance(algorithm, HashAlgorithm):\n            raise TypeError(\"Expected instance of hashes.HashAlgorithm.\")\n        self._algorithm = algorithm\n\n        self._backend = backend\n\n        if ctx is None:\n            self._ctx = self._backend.create_hash_ctx(self.algorithm)\n        else:\n            self._ctx = ctx\n\n    algorithm = utils.read_only_property(\"_algorithm\")\n\n    def update(self, data):\n        if self._ctx is None:\n            raise AlreadyFinalized(\"Context was already finalized.\")\n        if not isinstance(data, bytes):\n            raise TypeError(\"data must be bytes.\")\n        self._ctx.update(data)\n\n    def copy(self):\n        if self._ctx is None:\n            raise AlreadyFinalized(\"Context was already finalized.\")\n        return Hash(\n            self.algorithm, backend=self._backend, ctx=self._ctx.copy()\n        )\n\n    def finalize(self):\n        if self._ctx is None:\n            raise AlreadyFinalized(\"Context was already finalized.\")\n        digest = self._ctx.finalize()\n        self._ctx = None\n        return digest\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA1(object):\n    name = \"sha1\"\n    digest_size = 20\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA224(object):\n    name = \"sha224\"\n    digest_size = 28\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA256(object):\n    name = \"sha256\"\n    digest_size = 32\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA384(object):\n    name = \"sha384\"\n    digest_size = 48\n    block_size = 128\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA512(object):\n    name = \"sha512\"\n    digest_size = 64\n    block_size = 128\n\n\n@utils.register_interface(HashAlgorithm)\nclass RIPEMD160(object):\n    name = \"ripemd160\"\n    digest_size = 20\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass Whirlpool(object):\n    name = \"whirlpool\"\n    digest_size = 64\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass MD5(object):\n    name = \"md5\"\n    digest_size = 16\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass BLAKE2b(object):\n    name = \"blake2b\"\n    _max_digest_size = 64\n    _min_digest_size = 1\n    block_size = 128\n\n    def __init__(self, digest_size):\n        if (\n            digest_size > self._max_digest_size or\n            digest_size < self._min_digest_size\n        ):\n            raise ValueError(\"Digest size must be {0}-{1}\".format(\n                self._min_digest_size, self._max_digest_size)\n            )\n\n        self._digest_size = digest_size\n\n    digest_size = utils.read_only_property(\"_digest_size\")\n\n\n@utils.register_interface(HashAlgorithm)\nclass BLAKE2s(object):\n    name = \"blake2s\"\n    block_size = 64\n    _max_digest_size = 32\n    _min_digest_size = 1\n\n    def __init__(self, digest_size):\n        if (\n            digest_size > self._max_digest_size or\n            digest_size < self._min_digest_size\n        ):\n            raise ValueError(\"Digest size must be {0}-{1}\".format(\n                self._min_digest_size, self._max_digest_size)\n            )\n\n        self._digest_size = digest_size\n\n    digest_size = utils.read_only_property(\"_digest_size\")\n", "path": "src/cryptography/hazmat/primitives/hashes.py"}], "after_files": [{"content": "# This file is dual licensed under the terms of the Apache License, Version\n# 2.0, and the BSD License. See the LICENSE file in the root of this repository\n# for complete details.\n\nfrom __future__ import absolute_import, division, print_function\n\nimport abc\n\nimport six\n\nfrom cryptography import utils\nfrom cryptography.exceptions import (\n    AlreadyFinalized, UnsupportedAlgorithm, _Reasons\n)\nfrom cryptography.hazmat.backends.interfaces import HashBackend\n\n\n@six.add_metaclass(abc.ABCMeta)\nclass HashAlgorithm(object):\n    @abc.abstractproperty\n    def name(self):\n        \"\"\"\n        A string naming this algorithm (e.g. \"sha256\", \"md5\").\n        \"\"\"\n\n    @abc.abstractproperty\n    def digest_size(self):\n        \"\"\"\n        The size of the resulting digest in bytes.\n        \"\"\"\n\n    @abc.abstractproperty\n    def block_size(self):\n        \"\"\"\n        The internal block size of the hash algorithm in bytes.\n        \"\"\"\n\n\n@six.add_metaclass(abc.ABCMeta)\nclass HashContext(object):\n    @abc.abstractproperty\n    def algorithm(self):\n        \"\"\"\n        A HashAlgorithm that will be used by this context.\n        \"\"\"\n\n    @abc.abstractmethod\n    def update(self, data):\n        \"\"\"\n        Processes the provided bytes through the hash.\n        \"\"\"\n\n    @abc.abstractmethod\n    def finalize(self):\n        \"\"\"\n        Finalizes the hash context and returns the hash digest as bytes.\n        \"\"\"\n\n    @abc.abstractmethod\n    def copy(self):\n        \"\"\"\n        Return a HashContext that is a copy of the current context.\n        \"\"\"\n\n\n@utils.register_interface(HashContext)\nclass Hash(object):\n    def __init__(self, algorithm, backend, ctx=None):\n        if not isinstance(backend, HashBackend):\n            raise UnsupportedAlgorithm(\n                \"Backend object does not implement HashBackend.\",\n                _Reasons.BACKEND_MISSING_INTERFACE\n            )\n\n        if not isinstance(algorithm, HashAlgorithm):\n            raise TypeError(\"Expected instance of hashes.HashAlgorithm.\")\n        self._algorithm = algorithm\n\n        self._backend = backend\n\n        if ctx is None:\n            self._ctx = self._backend.create_hash_ctx(self.algorithm)\n        else:\n            self._ctx = ctx\n\n    algorithm = utils.read_only_property(\"_algorithm\")\n\n    def update(self, data):\n        if self._ctx is None:\n            raise AlreadyFinalized(\"Context was already finalized.\")\n        if not isinstance(data, bytes):\n            raise TypeError(\"data must be bytes.\")\n        self._ctx.update(data)\n\n    def copy(self):\n        if self._ctx is None:\n            raise AlreadyFinalized(\"Context was already finalized.\")\n        return Hash(\n            self.algorithm, backend=self._backend, ctx=self._ctx.copy()\n        )\n\n    def finalize(self):\n        if self._ctx is None:\n            raise AlreadyFinalized(\"Context was already finalized.\")\n        digest = self._ctx.finalize()\n        self._ctx = None\n        return digest\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA1(object):\n    name = \"sha1\"\n    digest_size = 20\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA224(object):\n    name = \"sha224\"\n    digest_size = 28\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA256(object):\n    name = \"sha256\"\n    digest_size = 32\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA384(object):\n    name = \"sha384\"\n    digest_size = 48\n    block_size = 128\n\n\n@utils.register_interface(HashAlgorithm)\nclass SHA512(object):\n    name = \"sha512\"\n    digest_size = 64\n    block_size = 128\n\n\n@utils.register_interface(HashAlgorithm)\nclass RIPEMD160(object):\n    name = \"ripemd160\"\n    digest_size = 20\n    block_size = 64\n\n\nRIPEMD160 = utils.deprecated(\n    RIPEMD160,\n    __name__,\n    \"The RIPEMD160 hash was deprecated in version 1.9.\",\n    utils.DeprecatedIn19\n)\n\n\n@utils.register_interface(HashAlgorithm)\nclass Whirlpool(object):\n    name = \"whirlpool\"\n    digest_size = 64\n    block_size = 64\n\n\nWhirlpool = utils.deprecated(\n    Whirlpool,\n    __name__,\n    \"The Whirlpool hash was deprecated in version 1.9.\",\n    utils.DeprecatedIn19\n)\n\n\n@utils.register_interface(HashAlgorithm)\nclass MD5(object):\n    name = \"md5\"\n    digest_size = 16\n    block_size = 64\n\n\n@utils.register_interface(HashAlgorithm)\nclass BLAKE2b(object):\n    name = \"blake2b\"\n    _max_digest_size = 64\n    _min_digest_size = 1\n    block_size = 128\n\n    def __init__(self, digest_size):\n        if (\n            digest_size > self._max_digest_size or\n            digest_size < self._min_digest_size\n        ):\n            raise ValueError(\"Digest size must be {0}-{1}\".format(\n                self._min_digest_size, self._max_digest_size)\n            )\n\n        self._digest_size = digest_size\n\n    digest_size = utils.read_only_property(\"_digest_size\")\n\n\n@utils.register_interface(HashAlgorithm)\nclass BLAKE2s(object):\n    name = \"blake2s\"\n    block_size = 64\n    _max_digest_size = 32\n    _min_digest_size = 1\n\n    def __init__(self, digest_size):\n        if (\n            digest_size > self._max_digest_size or\n            digest_size < self._min_digest_size\n        ):\n            raise ValueError(\"Digest size must be {0}-{1}\".format(\n                self._min_digest_size, self._max_digest_size)\n            )\n\n        self._digest_size = digest_size\n\n    digest_size = utils.read_only_property(\"_digest_size\")\n", "path": "src/cryptography/hazmat/primitives/hashes.py"}]}