SHA3-256¶
SHA3-256 belongs to the SHA-3 family of cryptographic hashes, as specified in FIPS 202.
The hash function produces the 256 bit digest of a message:
>>> from Crypto.Hash import SHA3_256
>>>
>>> h_obj = SHA3_256.new()
>>> h_obj.update(b'Some data')
>>> print h_obj.hexdigest()
SHA stands for Secure Hash Algorithm.
-
class
Crypto.Hash.SHA3_256.
SHA3_256_Hash
(data, update_after_digest)¶ A SHA3-256 hash object. Do not instantiate directly. Use the
new()
function.Variables: - oid (string) – ASN.1 Object ID
- digest_size (integer) – the size in bytes of the resulting hash
-
digest
()¶ Return the binary (non-printable) digest of the message that has been hashed so far.
Returns: The hash digest, computed over the data processed so far. Binary form. Return type: byte string
-
hexdigest
()¶ Return the printable digest of the message that has been hashed so far.
Returns: The hash digest, computed over the data processed so far. Hexadecimal encoded. Return type: string
-
new
()¶ Create a fresh SHA3-256 hash object.
-
update
(data)¶ Continue hashing of a message by consuming the next chunk of data.
Parameters: data (byte string/byte array/memoryview) – The next chunk of the message being hashed.
-
Crypto.Hash.SHA3_256.
new
(*args, **kwargs)¶ Create a new hash object.
Parameters: - data (byte string/byte array/memoryview) – The very first chunk of the message to hash.
It is equivalent to an early call to
update()
. - update_after_digest (boolean) – Whether
digest()
can be followed by anotherupdate()
(default:False
).
Return: A
SHA3_256_Hash
hash object- data (byte string/byte array/memoryview) – The very first chunk of the message to hash.
It is equivalent to an early call to