@technobuddha > library > Binary > Hash

Class: Crc32

Defined in: crc32.ts:84

Compute the CRC32 checksum of a binary object

Example

const crc = new Crc32();
crc.update('hello world', 'utf8');
crc.digest('hex');
// '0d4a1185'

const crc = new Crc32();
crc.update(new Uint8Array([0x72,0x69,0x4c,0x4c,0x4f]));
crc.digest('hex');
// 'c031d497'

Extends

• HashBase

Constructors

Constructor

new Crc32(): Crc32;

Defined in: src/crc32.ts:93

Creates a new CRC32 hash instance and initializes its internal state.

Returns

Crc32

Remarks

The CRC value is initialized to -1, as required by the CRC32 algorithm specification. Use update to process data and digest to obtain the final hash value.

Overrides

HashBase.constructor

Methods

digest()

Call Signature

digest(): Uint8Array;

Defined in: src/crc32.ts:116

Finalizes the hash computation and returns the resulting hash digest. This method performs any necessary padding and processes the final block of data according to the hash algorithm's specification.

Returns

Uint8Array

The hash digest

Overrides

HashBase.digest

Call Signature

digest(encoding: BinaryEncoding): string;

Defined in: src/crc32.ts:117

Finalizes the hash computation and returns the resulting hash digest. This method performs any necessary padding and processes the final block of data according to the hash algorithm's specification.

Parameters

Parameter	Type	Description
encoding	BinaryEncoding	Optional. The encoding to use for the output digest (e.g., 'hex', 'base64').

Returns

string

An encoded string, depending on the encoding parameter.

Overrides

HashBase.digest

---

update()

Call Signature

update(data: BinaryObject | ArrayLike<number>): this;

Defined in: src/crc32.ts:98

Updates the hash with the given binary data.

Parameters

Parameter	Type	Description
data	BinaryObject | ArrayLike<number>	The data to update the hash with, as a BinaryObject.

Returns

this

The hash instance for method chaining.

Overrides

HashBase.update

Call Signature

update(data: string, encoding?: TextEncoding): this;

Defined in: src/crc32.ts:99

Updates the hash with the given string data.

Parameters

Parameter	Type	Description
data	string	The string data to update the hash with.
encoding?	TextEncoding	Optional text encoding of the input string (e.g., 'utf8').

Returns

this

The hash instance for method chaining.

Overrides

HashBase.update