import Hasher from 'crypto-api/src/hasher/hasher.mjs'

public interface | source

Hasher

Base hasher class

Constructor Summary

Public Constructor
public	constructor(options: Object)

Member Summary

Public Members
public	blockSize: number Size of block in units
public	blockSizeInBytes: number Size of block in bytes
public	options: *
public	unitOrder: number Bytes order in unit 0 - normal 1 - reverse
public	unitSize: number Size of unit in bytes (4 = 32 bits)

Protected Members
protected	state: Object All algorithm variables that changed during process

Method Summary

Public Methods
public	finalize(): string Finalize hash and return result
public	getState(): Object Return current state
public	reset() Reset hasher to initial state
public	setState(state: Object) Set current state
public	update(message: string) Update message from binary string

Protected Methods
protected	addPaddingISO7816(length: number) Add ISO7816-4 padding to message Pad with 0x80 followed by zero bytes
protected	addPaddingPKCS7(length: number) Add PKCS7 padding to message Pad with bytes all of the same value as the number of padding bytes
protected	addPaddingZero(length: number) Add zero padding to message Pad with 0x00 characters
protected	getStateHash(size: number): string Get hash from state
protected	process() Process ready blocks

Public Constructors

public constructor(options: Object) source

Params:

Name	Type	Attribute	Description
options	Object

Public Members

public blockSize: number source

Size of block in units

public blockSizeInBytes: number source

Size of block in bytes

public options: * source

public unitOrder: number source

Bytes order in unit 0 - normal 1 - reverse

public unitSize: number source

Size of unit in bytes (4 = 32 bits)

Protected Members

protected state: Object source

All algorithm variables that changed during process

Properties:

Name	Type	Attribute	Description
state.message	string		Unprocessed Message
state.length	number		Length of message

Public Methods

public finalize(): string source

Finalize hash and return result

Return:

string

public getState(): Object source

Return current state

Return:

Object

public reset() source

Reset hasher to initial state

public setState(state: Object) source

Set current state

Params:

Name	Type	Attribute	Description
state	Object

public update(message: string) source

Update message from binary string

Params:

Name	Type	Attribute	Description
message	string

Protected Methods

protected addPaddingISO7816(length: number) source

Add ISO7816-4 padding to message Pad with 0x80 followed by zero bytes

Params:

Name	Type	Attribute	Description
length	number

protected addPaddingPKCS7(length: number) source

Add PKCS7 padding to message Pad with bytes all of the same value as the number of padding bytes

Params:

Name	Type	Attribute	Description
length	number

protected addPaddingZero(length: number) source

Add zero padding to message Pad with 0x00 characters

Params:

Name	Type	Attribute	Description
length	number

protected getStateHash(size: number): string source

Get hash from state

Params:

Name	Type	Attribute	Description
size	number	optional default: this.state.hash.length	Limit hash size (in chunks)

Return:

string

protected process() source

Process ready blocks