uhashlib - Hash Algorithm

This article introduces the use of QuecPython's uhashlib module and describes features of the latest version of the uhashlib module.

This module realizes the hash algorithm of the binary data.

Note: Only supports SHA256, SHA1, MD5 currently.

Example

import uhashlib
import ubinascii

hash_obj  = uhashlib.sha256()  # Creates the hash object
hash_obj.update(b"QuecPython")
res = hash_obj.digest()
# b"\x1e\xc6gq\xb3\xa9\xac>\xa4\xc4O\x00\x9eTW\x97\xd4.\x9e}Bo\xff\x82u\x89Th\xfe'\xc6\xcd"
# Converts to hexadecimal
hex_msg = ubinascii.hexlify(res)
# b'1ec66771b3a9ac3ea4c44f009e545797d42e9e7d426fff8275895468fe27c6cd'

Constructor

uhashlib.sha256

class uhashlib.sha256(bytes)

Creates a SHA256 hash object.

Parameter

• bytes - Bytes type. Optional parameter. Bytes data can be passed when creating a SHA256 hash object or via hash_obj.update().

uhashlib.sha1

class uhashlib.sha1(bytes)

Creates a SHA1 hash object.

Parameter

• bytes - Bytes type. Optional parameter. Bytes data can be passed when creating a SHA256 hash object or via hash_obj.update().

uhashlib.md5

class uhashlib.md5(bytes)

Creates a MD5 hash object.

Parameter

• bytes - Bytes type. Optional parameter. Bytes data can be passed when creating a SHA256 hash object or via hash_obj.update().

Methods

hash_obj.update()

hash_obj.update(bytes)

Adds more bytes data to the hash.

Parameter

• bytes - Bytes type. Need to be encrypted.

hash_obj.digest()

hash_obj.digest(bytes)

Returns the hash of all data passed by the hash algorithm. The type of data is bytes. No more data can be sent into the hash after this method is called.