Class for generating a SHA-2 hash value. More..

Public Member Functions
def	__init__ (self, size=512)
	Constructor. More...

def	update (self, data)
	Updates the SHA2 hash value with the transferred data. More...

def	digest (self)
	Returns the SHA2 code. More...

def	hex_digest (self)
	Returns the SHA2 code as a hex string. More...

Detailed Description

Class to generate a SHA-2 hash value

Part of the packet for encryption

class Crypto_HASH(hsl20_4.BaseModule):
    def __init__(self, homeserver_context):
        ....
        
    def on_input_value(self, index, value):
        if index == self.PIN_I_DO_HASH:
            if value == 1:
                hash = self.FRAMEWORK.create_sha224_hash()
            elif value == 2:
                hash = self.FRAMEWORK.create_sha256_hash()
            elif value == 3:
                hash = self.FRAMEWORK.create_sha384_hash()
            else:
                hash = self.FRAMEWORK.create_sha512_hash()
            hash.update(self._get_input_value(self.PIN_I_DATA))
            self._set_output_value(self.PIN_O_HEXCODE, hash.hex_digest())

If a telegram is received at input PIN_I_DO_HASH, a hash code is formed for the data block (string) at input PIN_I_DATA. Depending on the value of the telegram it is selected which method is used for this. Then at output PIN_O_HEXCODE the hash code is output as a hexadecimal number

Constructor & Destructor Documentation

◆ init()

def hsl20_4_crypto.hsl20_4_crypto.SHA2Hash.__init__	(	self,
		size = `512`
	)

Constructor

Parameters

size	int Length of the hash value. Possible values: 224, 256, 384 and 512

Member Function Documentation

◆ digest()

def hsl20_4_crypto.hsl20_4_crypto.SHA2Hash.digest ( self )

Returns the SHA2 code

Returns: string
SHA2 code

◆ hex_digest()

def hsl20_4_crypto.hsl20_4_crypto.SHA2Hash.hex_digest ( self )

Returns the SHA2 code as a hex string

Returns: string
SHA2 code

◆ update()

def hsl20_4_crypto.hsl20_4_crypto.SHA2Hash.update	(	self,
		data
	)

Updates the SHA2 hash value with the transferred data