def test_hash128():
assert mmh3.hash128('foo') == 168394135621993849475852668931176482145
assert mmh3.hash128('foo', 42) == 215966891540331383248189432718888555506
assert mmh3.hash128(
'foo', 42, signed=False) == 215966891540331383248189432718888555506
assert mmh3.hash128(
'foo', 42, signed=True) == -124315475380607080215185174712879655950
def generate_table(self, item_ids):
"""
Given a list of item IDs, generate a corresponding IBLT
Args:
item_ids(list): A list of IDs for items to be included in IBLT.
Returns:
list: An invertible bloom lookup table in format list of lists.
"""
bloom = [(0, 0, 0)] * self.m
for item in item_ids:
hash_values = []
for seed in self.seed_list:
hash_values.append(mmh3.hash128(str(item).encode(), seed))
for hash_value in hash_values:
index = hash_value % self.m
id_sum = bloom[index][0] ^ item
if bloom[index][1] == 0:
hash_sum = mmh3.hash128(
str(item).encode(), self.element_hash)
else:
hash_sum = bloom[index][1] ^ mmh3.hash128(
str(item).encode(), self.element_hash)
count = bloom[index][2] + 1
bloom[index] = (id_sum, hash_sum, count)
return bloom
def peel_element(self, element_id, table, alteration):
"""
Peels a single element from a given IBLT.
Args:
element_id(int): The element to be peeled.
table(list): The invertible bloom lookup table.
alteration(int): The indicator as to which list this element was stored in (1 OR -1)
Returns:
list:
An updated invertible bloom lookup table with the given element removed.
"""
hash_values = []
element_hash = mmh3.hash128(
str(element_id).encode(), self.element_hash)
for seed in self.seed_list:
hash_values.append(mmh3.hash128(str(element_id).encode(), seed))
for hash_value in hash_values:
index = hash_value % self.m
id_sum = table[index][0] ^ element_id
if table[index][1] == 0:
hash_sum = element_hash
else:
hash_sum = table[index][1] ^ element_hash
count = table[index][2] - alteration
table[index] = (id_sum, hash_sum, count)
return table
def generate_table(item_ids,
seed_key,
table_size=_M,
max_hashes=MAX_HASHES,
a_value=DEFAULT_A_VALUE,
hash_decider=None,
hash_decider_length=MAX_RANDOM_HASHES,
seed_range=MAX_RANDOM_HASHES):
"""
Generate the randomized hash function quantity based IBLT
Args:
a_value: The value for a in the ALOHA style distribution function.
item_ids: The IDs of the items to be inserted.
seed_key: Shared key to instantiate hash functions.
table_size: Size of the IBLT.
max_hashes: Upper bound for total hashes to be used.
hash_decider(list[int]): List of random numbers for hashing iterations.
hash_decider_length: Size of the list of random numbers determining the amount of times an item is added.
seed_range: The upper bound of the values of any given seed key.
Returns:
tuple[list[tuple], list[int], list[int]]: An IBLT as a list of tuples, each element is of the form (idSum, hashSum, count).
"""
bloom = [(0, 0, 0)] * table_size
if hash_decider is None:
hash_decider = IBLT.generate_hash_decider(seed_key, max_hashes,
a_value,
hash_decider_length)
seed_list = IBLT.generate_seed_list(seed_key, max_hashes, seed_range)
for item in item_ids:
item_hash = mmh3.hash128(str(item).encode(), seed_key)
hash_quantity = hash_decider[item_hash % len(hash_decider)]
hash_values = []
# Calculate hash values for the item and derive the index for encoding
for i in range(hash_quantity):
hash_values.append(
mmh3.hash128(str(item).encode(), seed_list[i]))
for hash_value in hash_values:
index = hash_value % table_size
id_sum = bloom[index][0] ^ item
if bloom[index][1] == 0:
hash_sum = item_hash
else:
hash_sum = bloom[index][1] ^ item_hash
count = bloom[index][2] + 1
bloom[index] = (id_sum, hash_sum, count)
return bloom, seed_list, hash_decider
def lemmatizeFile(file):
f = open(file, 'r')
# wnl = WordNetLemmatizer()
wordsHashMap = {}
words = {}
word = ""
while 1:
c = f.read(1)
if c:
if ('a' <= c <= 'z') or ('A' <= c <= 'Z') or (c == '\''):
word += c
else:
if word:
word = word.lower()
if word not in processedWords:
canonical = word
if word in exceptions:
if word in words:
words[word] += 1
else:
words[word] = 1
wordsHashMap[mmh3.hash128(word)] = [word, words[word]]
else:
if word not in stopWords:
# tag = nltk.pos_tag([word])
if 1: # tag[0][1] in tags:
# t = tags[tag[0][1]]
canonical = word # wnl.lemmatize(word, t)
if canonical in words:
words[canonical] += 1
else:
words[canonical] = 1
wordsHashMap[mmh3.hash128(canonical)] = [canonical, words[canonical]]
processedWords[word] = canonical
else:
if word in words:
words[word] += 1
else:
words[word] = 1
wordsHashMap[mmh3.hash128(word)] = [word, words[word]]
word = ""
else:
break
"""
with open(f.name + '.wordsHashMap', 'w') as outfile:
json.dump(wordsHashMap, outfile) # """
return wordsHashMap
def get_hash(i, value):
if (i == 0):
i = -12345
#https://stackoverflow.com/questions/11954086/which-hash-functions-to-use-in-a-bloom-filter
hash1 = hashlib.sha256()
hash1.update(value.encode('utf-8'))
return int(hash1.hexdigest(), 16) + (i * mmh3.hash128(value))
def hash_vulnerability(data: dict):
string_hash = []
for x in ('cve', 'id', 'cwe', 'title'):
if x in data:
string_hash.append(data[x])
return mmh3.hash128("#".join(string_hash))
def _get_bucket_idxes(self, element):
idxes = []
# Each i is a seed for a new Universal Hash Fn
for i in range(self._k):
idxes.append(mmh3.hash128(element, i) % len(self._bit_array))
return idxes
async def vid(request: Request):
task_cache = GlobalCache()
global wtf
if not wtf:
loop = asyncio.get_event_loop()
loop.create_task(fetch_downloader())
wtf = True
vid_url = request.form.get('url')
if type(vid_url) is not str:
return redirect("/")
vid_url = vid_url.split("&")[0]
if vid_url.startswith("http"):
vid_url = vid_url.rstrip("https://").rstrip("http://")
url_hash = hash128(vid_url)
if url_hash not in task_cache:
task_cache[url_hash] = Task()
downloader_p = Process(target=download_vid,
args=(vid_url, download_q, url_hash))
downloader_p.start()
return redirect(f"./task/{url_hash}")
def generate_filter(self, items, seeds=None, m=None):
"""
Given a number of items, generate a bloom filter.
Args:
items(list, dict): A list of items or a single item to be inserted to the filter.
seeds(list): (Optional) A list of seed values for hashing algorithm.
m(int): (Optional) Size of bloom filter array.
Returns:
bytearray: An array of binary bits representing the bloom filter.
"""
if type(items) == dict:
keys = items.keys()
temp_list = []
for key in keys:
temp_string = str(key) + ":" + str(items[key])
temp_list.append(temp_string)
items = temp_list
bloom_filter = bytearray(int(self.m))
if seeds is None:
seeds = self.seed_list
if m is None:
m = self.m
for item in items:
for seed in seeds:
index = mmh3.hash128(str(item).encode(), seed) % m
bloom_filter[index] = 1
return bloom_filter
def _k_smallest_hash(self, document):
""" Generates a texts minhash signature using k smallest neighbours method.
Uses a single random hash to simulate a shuffle of each texts shingles.
Then selecting i smallest minimum hash values for j permutations.
Faster but less stable than multi hash method.
Args:
document (list): List of text shingles.
Returns:
list: List of text signatures generated using k smallest neighbours method.
"""
signature = []
# Uses a heap to make calculating n smallest values more efficient.
heapq.heapify(signature)
if len(document) <= self.permutations:
raise ValueError(
'N permutations must not be >= n shingles for k_smallest_values method'
)
for shingle in document:
if self.hash_bits == 64:
hashed_shingle = mmh3.hash64(shingle, self._hash_seeds)[0]
elif self.hash_bits == 32:
hashed_shingle = mmh3.hash(shingle, self._hash_seeds)
else:
hashed_shingle = mmh3.hash128(shingle, self._hash_seeds)
heapq.heappush(signature, hashed_shingle)
return heapq.nsmallest(self.permutations, signature)
def __init__(self):
# Define Supported hashes
hashes = dict()
hashes['md2'] = lambda x: self._get_md2_hash(x)
hashes['md4'] = lambda x: self._get_hashlib_hash('md4', x)
hashes['md5'] = lambda x: hashlib.md5(x).hexdigest()
hashes['sha'] = lambda x: self._get_hashlib_hash('sha', x)
hashes['sha1'] = lambda x: hashlib.sha1(x).hexdigest()
hashes['sha256'] = lambda x: hashlib.sha256(x).hexdigest()
hashes['sha224'] = lambda x: hashlib.sha224(x).hexdigest()
hashes['sha384'] = lambda x: hashlib.sha384(x).hexdigest()
hashes['sha512'] = lambda x: hashlib.sha512(x).hexdigest()
hashes['sha3_224'] = lambda x: sha3.sha3_224(x).hexdigest()
hashes['sha3_256'] = lambda x: sha3.sha3_256(x).hexdigest()
hashes['sha3_384'] = lambda x: sha3.sha3_384(x).hexdigest()
hashes['sha3_512'] = lambda x: sha3.sha3_512(x).hexdigest()
hashes['mmh2'] = lambda x: str(mmhash.get_hash(x))
hashes['mmh2_unsigned'] = lambda x: str(mmhash.get_unsigned_hash(x))
hashes['mmh3_32'] = lambda x: str(mmh3.hash(x))
hashes['mmh3_64_1'] = lambda x: str(mmh3.hash64(x)[0])
hashes['mmh3_64_2'] = lambda x: str(mmh3.hash64(x)[1])
hashes['mmh3_128'] = lambda x: str(mmh3.hash128(x))
hashes['ripemd160'] = lambda x: self._get_hashlib_hash('ripemd160', x)
hashes['whirlpool'] = lambda x: self._get_hashlib_hash('whirlpool', x)
hashes['blake2b'] = lambda x: pyblake2.blake2b(x).hexdigest()
hashes['blake2s'] = lambda x: pyblake2.blake2s(x).hexdigest()
hashes['crc32'] = lambda x: str(zlib.crc32(x))
hashes['adler32'] = lambda x: str(zlib.adler32(x))
self._hashes = hashes
self.hashes_and_checksums = self._hashes.keys()
self.supported_hashes = HASHES
def _multi_hash(self, document):
""" Generates a texts minhash signature using multi-hash method.
Uses i random hashes for j permutations selecting the minimum hash value
each time to build each texts hash signature.
Slower but more stable than k smallest hash method.
Args:
document (list): List of document shingles.
Returns:
list: List of text signatures generated using k smallest neighbours method.
"""
signature = []
for seed in np.nditer(self._hash_seeds):
self._min_value = None
for shingle in document:
if self.hash_bits == 64:
hash_value = mmh3.hash64(shingle, int(seed))[0]
elif self.hash_bits == 32:
hash_value = mmh3.hash(shingle, int(seed))
else:
hash_value = mmh3.hash128(shingle, int(seed))
if not self._min_value:
self._min_value = hash_value
elif self._min_value > hash_value:
self._min_value = hash_value
signature.append(self._min_value)
return signature
def validate():
email_message = ''
already_sent = None
if os.path.exists('processed.json'):
sent_json_file = open('processed.json')
already_sent = json.load(sent_json_file)
sent_json_file.close()
with open('saved.json') as json_file:
data = json.load(json_file)
if not already_sent:
already_sent = {}
for p in data:
try:
with urllib.request.urlopen(p) as response:
html = response.read()
encoded = base64.b64encode(html)
hashed = mmh3.hash128(encoded, 42, signed=True)
mark = True
if p in already_sent:
if already_sent[p]:
mark = False
if mark:
if data[p] != hashed:
email_message += "- Failed Hash for: " + str(
p) + '\r\n'
already_sent[p] = True
except:
email_message += "- Failed EXCEPTION for: " + str(p) + '\r\n'
if email_message != '':
email_error(email_message, already_sent)
def hash_to_bucket(e, B):
i = mmh3.hash128(str(e))
p = i / float(2**128)
for j in range(0, B):
if j / float(B) <= p and (j + 1) / float(B) > p:
return j + 1
return B
def forward(resource, identifier):
""" Redirects request for file to direct URL.
Requires global "paths" dictionary is active.
resource: a given resource, like "recount2"
identifier: relative path to file or directory
Return value: Flask redirect response object
"""
# Log all requests, even weird ones
ip = str(request.headers.get('X-Forwarded-For',
request.remote_addr)).split(',')[0].strip()
print >>_LOGSTREAM, '\t'.join(
[time.strftime('%A, %b %d, %Y at %I:%M:%S %p %Z'),
str(mmh3.hash128(ip + 'recountsalt')),
resource,
identifier])
_LOGSTREAM.flush()
if resource == 'recount':
# Redirect to IDIES URL in order of descending version
for i in ['2']: # add versions to precede 2 as they are released
if identifier.startswith(' '.join(['v', i, '/'])):
idies_url = '/'.join(
['http://idies.jhu.edu/recount/data', identifier]
)
idies_response = requests.head(idies_url)
if idies_response.status_code == 200:
return redirect(idies_url, code=302)
# v1 is not explicitly versioned
idies_url = '/'.join(['http://idies.jhu.edu/recount/data', identifier])
idies_response = requests.head(idies_url)
if idies_response.status_code == 200:
return redirect(idies_url, code=302)
abort(404)
def _read(self, file_path: str) -> Iterable[Instance]:
file_path = Path(file_path)
files = file_path.iterdir()
exist = 0
non_exist = 0
for f in filter(lambda x: x.suffix == '.json', files):
with open(f) as jfile:
data = json.load(jfile)
for article_summary in data:
url = article_summary['url']
article_summary['summary'], _ = re.subn(
r"(\s?\([^)]*\)\s?)", "", article_summary['summary'])
result = {'browser': article_summary}
try:
sentences_path = file_path / "../scored_sentences/{:x}.json".format(
mmh3.hash128(url))
except UnicodeError:
continue
if sentences_path.exists():
try:
with open(sentences_path) as sentence_file:
sentences = json.load(sentence_file)
except (ValueError, IOError):
continue
exist += 1
result['sentences'] = sentences
for sentence, label in sentences['sentences']:
yield self.text_to_instance(sentence, label)
else:
non_exist += 1
print(exist, non_exist)
if self.max_files and exist > self.max_files:
return
def murmur3_128bit(obj):
"""
Use murmur3_128bit for bit hash by passing this method:
hasher=DeepHash.murmur3_128bit
This hasher is the default hasher.
"""
obj = obj.encode('utf-8')
return mmh3.hash128(obj, MURMUR_SEED)
def add(self, item):
if self.isContain(item):
return False
else:
for i in range(self.numHash):
bitIndex = long(mmh3.hash128(item, i) % self.size)
self.bitArray[bitIndex] = 1
return True
def simple_object(key, value):
"Create a simple key/value object."
return {
"_id": mmh3.hash128(value),
"_type": key,
"_tool": TOOL,
key: value,
}
def get_file_hashes(file_path: Path) -> Iterator[int]:
files = file_path.iterdir()
for f in filter(lambda x: x.suffix == '.json', files):
with open(f) as jfile:
data = json.load(jfile)
for article_summary in data:
url = article_summary['url']
yield mmh3.hash128(url)
def murmur3_128bit(obj):
"""
Use murmur3_128bit for bit hash by passing this method:
hasher=DeepHash.murmur3_128bit
This hasher is the default hasher.
"""
obj = obj.encode('utf-8')
return mmh3.hash128(obj, MURMUR_SEED)
def test_64bit():
if sys.maxsize < (1 << 32): # Skip this test under 32-bit environments
return
a = np.zeros(2**32, dtype=np.int8)
assert mmh3.hash(a) == -1988950868
assert mmh3.hash64(a) == (-6319308327427928234, -8156928649350215884)
assert mmh3.hash128(a) == 189813591698865711411311444615608766294
assert mmh3.hash_bytes(a) == b'V\x8f}\xad\x8eNM\xa84\x07FU\x9c\xc4\xcc\x8e'
def flajolet_martin_algo(k,v, accum,seed,n):
key = ['MM','OH','SIGH','UM']
idx = key.index(k)
hkey = mmh3.hash128(v.lower(), seed)%n
hkey = format(hkey, 'b')
trailing_zeros = len(hkey) - len(hkey.rstrip('0'))
accum.add(pow(2,trailing_zeros))
return
def run_plugin(data: dict) -> List[dict or None]:
port = data['port']
domain = data['domain']
log.info(f"Starting DNS information gathering for domain "
f"{domain}")
output_result = "/tmp/result.json"
if platform.system() == "Darwin":
binary = 'testssl.sh'
else:
binary = 'testssl'
command = f"{binary} --jsonfile-pretty={output_result} " \
f"--severity MEDIUM --sneaky -U -S -p " \
f"{domain}:{port}"
execution_result = launch_command(command,
callback=(print, log.info),
file_result=output_result)
# -------------------------------------------------------------------------
# Finding results
# -------------------------------------------------------------------------
json_execution_result = json.loads(execution_result)
results = []
for host in json_execution_result['scanResult']:
# ---------------------------------------------------------------------
# Recover vulnerabilities
# ---------------------------------------------------------------------
for vulnerability in host['vulnerabilities']:
# -----------------------------------------------------------------
# Build IP data
# -----------------------------------------------------------------
ip = {
'_type': 'ip',
'ip': host['ip']
}
ip['_id'] = calculate_hash(ip)
# -----------------------------------------------------------------
# Build vulnerability data
# -----------------------------------------------------------------
v = {
'_type': 'vulnerability',
'cve': vulnerability.get('cve', ""),
'title': vulnerability['id'],
'description': vulnerability.get('finding', ""),
'cwe': vulnerability.get('cwe', "")
}
v['_id'] = mmh3.hash128(f"{ip['_id']}#{calculate_hash(v)}")
results.append([ip, v])
return results
def api(self, reqtype, endpoint, data=None, headers=None, ttl=180, error_msg=None):
'''(CanvasLMSTool, str, dict or str, dict, int (number of seconds to live), str) -> json
Return a json object which is the result of a Canvas API call to endpoint, and cache the request for ttl seconds.
Raise an Exception with error_msg text in case of failure.'''
endpoint = str(endpoint)
assert reqtype in ['get', 'post', 'put', 'delete']
assert isinstance(endpoint, str) and endpoint.startswith('/')
assert data is None or isinstance(data, dict) or isinstance(data, str)
assert isinstance(headers, dict) or headers is None
assert error_msg is None or isinstance(error_msg, str)
token = self.get_canvas_user()['token']
error_msg = 'Failed to access Canvas. Location: ' + endpoint if error_msg is None else error_msg
if '?' in endpoint:
endpoint += '&access_token=' + token
else:
endpoint += '?access_token=' + token
if reqtype == 'get':
key = str('CanvasAPICall_' + str(hash128(endpoint + str(data) + str(headers))))
try:
r = MC.get(key)
if r is not None:
return json.loads(r)
except:
cherrypy.log('error accessing memcache')
cherrypy.log('Request for ' + endpoint + ' not cached. Key: ' + key)
req = getattr(requests, reqtype)
try:
content = ''
r = req(self.canvas_url + endpoint, data=data, headers=headers, verify=False)
if r.status_code in [401, 403]:
delete_all_cookies()
raise cherrypy.HTTPRedirect(LOGOUT_URL)
if r.status_code != 200:
content = r.content
except:
raise Exception(error_msg + ' ' + str(r.status_code) + ' ' + str(content))
j = r.json()
if reqtype == 'get':
try:
cherrypy.log('setting ' + key + ' :' + str(j))
MC.set(key, json.dumps(j), ttl)
print MC.get(key)
except:
pass
return j
def hash_all_func(data):
if isinstance(data, str):
data = data.encode('ascii')
c, b = hashlittle2(data, 0, 0)
v = mmh3.hash128(key=data, x64arch=True)
return c, (v >> 16) & 0x0000FFFFFFFFFFFF, int(np.int64(np.uint64(v & 0xFFFFFFFFFFFFFFFF)))
def test_hashex_murmur():
assert proxenos.rendezvous.hashex(proxenos.rendezvous.HashMethod.MMH3_32,
'secret') == mmh3.hash('secret')
assert proxenos.rendezvous.hashex(proxenos.rendezvous.HashMethod.MMH3_64,
'secret') == mmh3.hash64('secret')[0]
assert proxenos.rendezvous.hashex(proxenos.rendezvous.HashMethod.MMH3_128,
'secret') == mmh3.hash128('secret')
def __init__(self, basic_block, sim):
self.basic_block = basic_block
self.buff = ""
for i in self.basic_block.bb.get_instructions():
self.buff += dvm.clean_name_instruction(i)
self.buff += dvm.static_operand_instruction(i)
self.buff = self.buff.encode('UTF-8')
self.hash = mmh3.hash128(self.buff)
def murmur_hash():
hash_result = mmh3.hash('google')
pprint(hash_result)
hash64_result = mmh3.hash64('amazon')
pprint(hash64_result)
hash128_result = mmh3.hash128('HugeHard')
pprint(hash128_result)
def keyword_object(_type, **kwargs):
"Create an object with multiple keys and values."
j = dict(**kwargs)
j["_type"] = _type
j["_tool"] = TOOL
j["_id"] = mmh3.hash128("|".join(
(key.replace("|", "||") + "|" + value.replace("|", "||")
for key, value in kwargs.items())))
return j
def hash_to_bucket(user_id, num_buckets):
"""Consistently hash `user_id` into buckets of length `num_buckets`.
Approach derived from: https://stats.stackexchange.com/questions/26344/how-to-uniformly-project-a-hash-to-a-fixed-number-of-buckets
"""
i = mmh3.hash128(str(user_id))
p = i / float(2**128)
for j in range(0, num_buckets):
if j / float(num_buckets) <= p and (j + 1) / float(num_buckets) > p:
return j + 1
return num_buckets
def getSketch(dnaStr,k,seedList):
colNames = ['%d' %(i) for i in range(len(seedList))]
sketch=[]
for seed in seedList:
hashvals = [ mmh3.hash128(compareFwdRev(dnaStr[i:i+k]),seed) for i in range(len(dnaStr)-k) ]
sketch += [np.min(hashvals)]
sketchSeries = pd.Series(data = sketch, index=colNames)
return sketchSeries
def check(self, item):
'''
Check for existence of an item in filter
'''
for i in range(self.hash_count):
digest = mmh3.hash128(item, i) % self.size
if self.bit_array[digest] == False:
# if any of bit is False then,its not present
# in filter
# else there is probability that it exist
return False
return True
def FM(stream, r): #r is the number of estimates needed
salt = np.random.randint(1 << 30, size=r)
z = [0] * r # z[i] counts the max no. trailing zeros for ith hash fn.
for x in stream:
for i in range(r):
y = mmh3.hash128(str(x) + str(salt[i]))
itob = bin(y)[2:] #convert integer to binary in string
zeros = len(itob) - len(
itob.rstrip('0')) #compute the trailing zeros
z[i] = max(z[i], zeros)
return z
def remap_items(filename, outfilename, feature_map, offer_field='offers', enumerate=False):
"""
Remap items
:param filename:
:param outfilename:
:return:
"""
meta = RecordMeta(open(filename + '.meta').readline().strip().split())
Record = make_record_cls(meta.fields())
mapping = {}
with open(outfilename, 'w') as outfile:
for line in open(filename):
splitted = line.strip().split('\t')
rec = Record(*splitted)
items = [offer for offer in getattr(rec, offer_field).split() if offer.isdigit()]
if not items:
continue
counter_id = rec.counter_id
new_items = []
for item in items:
offer_hash = mmh3.hash128("%s_%s" % (counter_id, item))
if offer_hash not in mapping:
index = len(mapping)
mapping[offer_hash] = (index, counter_id, item)
else:
index = mapping[offer_hash][0]
if enumerate:
new_items.append(str(index))
else:
new_items.append(str(offer_hash))
new_rec_data = dict([(f, getattr(rec, f)) for f in meta.fields()])
new_rec_data[offer_field] = ' '.join(new_items)
new_rec = '\t'.join([new_rec_data[field] for field in meta.fields()])
outfile.write("%s\n" % new_rec)
with open(feature_map, 'w') as fmap:
for offer_hash, (i, counter_id, item) in mapping.iteritems():
fmap.write("%s\t%s\t%s\t%s\n" % (offer_hash, i, counter_id, item))
with open(feature_map + '.meta', 'w') as fmap:
fmap.write("offer_hash\tmap\tcounter_id\toffer_id\n")
def return_design_matrix(self, decision_state, reward=None, weight=1, critic_model=False):
"""
Design matrix can simply return catesian product of state and decision
For now all categorical features
"""
if self.model_class == 'lookup_table':
return decision_state, reward
else:
state, decision_taken = decision_state
state_namespace = " |state " + " ".join(state) + " " + "tag_" + str(mmh3.hash128("_".join(state)))
decision_namespace = " |decision " + "action_" + str(decision_taken)
input_str = state_namespace + decision_namespace + '\n'
# Do this after cache retrieval
if reward:
output = str(reward) + " " + str(weight)
fv = output + input_str
else:
fv = input_str
return fv, reward
def lookup(self, new_string): a,b = mmh3.hash64(new_string) if(self.bloom_array[mmh3.hash(new_string) % 1000000] == 0 or self.bloom_array[mmh3.hash128(new_string)%1000000] == 0 or self.bloom_array[a % 1000000] == 0 or self.bloom_array[b%1000000] == 0): return False else: return True
def genPrimaryKey64(data):
return "%x" % (mmh3.hash128(data) & 0xFFFFFFFFFFFFFFFF)
def add(self, new_string): self.bloom_array[mmh3.hash(new_string) % 1000000] = 1 self.bloom_array[mmh3.hash128(new_string) % 1000000] = 1 a,b = mmh3.hash64(new_string) self.bloom_array[a % 1000000] = 1 self.bloom_array[b % 1000000] = 1
def hash_string(s):
return "html2latex_{version}_{mmh3_hash}_{hmac_of_sha512_hash}".format(
version=VERSION,
mmh3_hash=mmh3.hash128(s),
hmac_of_sha512_hash=hmac.new(hashlib.sha512(s).hexdigest()).hexdigest(),
)
def test_hash_128(self):
h = mmh3.hash128('hello')
assert h == 121118445609844952839898260755277781762
def hashFiles(files):
fileMap = {}
for f in files:
fileMap[mmh3.hash128(f)] = f
return fileMap
def obfuscateDecimal(self, blob):
return mmh3.hash128(blob) & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
def _hash(self, item):
bloom = 0
for salt in self.salts:
bloom |= (1L << (mmh3.hash128(salt + str(item)) % self.m))
return bloom
def build_key(params):
joined = ','.join(['%s=%s' % (PersonCounter.PARAM_KEYS[i], value) for i, value in enumerate(params) if value])
return 'person-count__%s' % mmh3.hash128(joined)
def sparsify(self, x):
sparse_x = np.nonzero(x)[0]
tag = str(mmh3.hash128("_".join('pix_' + str(i) for i in sparse_x)))
state = " |state " + " ".join('pix_' + str(i) for i in sparse_x) + " tag_" + tag
return state