Class CRC32C (6.3.0)

Package

@google-cloud/storage

Constructors

(constructor)(initialValue)

constructor(initialValue?:number);

Constructs a newCRC32C object.

Reconstruction is recommended via theCRC32C.from static method.

Parameter
NameDescription
initialValuenumber

An initial CRC32C value - a signed 32-bit integer.

Properties

CRC32C_EXTENSION_TABLE

staticreadonlyCRC32C_EXTENSION_TABLE:Int32Array;

CRC32C_EXTENSIONS

staticreadonlyCRC32C_EXTENSIONS:readonly[0,4067132163,3778769143,324072436,3348797215,904991772,648144872,3570033899,2329499855,2024987596,1809983544,2575936315,1296289744,3207089363,2893594407,1578318884,274646895,3795141740,4049975192,51262619,3619967088,632279923,922689671,3298075524,2592579488,1760304291,2075979607,2312596564,1562183871,2943781820,3156637768,1313733451,549293790,3537243613,3246849577,871202090,3878099393,357341890,102525238,4101499445,2858735121,1477399826,1264559846,3107202533,1845379342,2677391885,2361733625,2125378298,820201905,3263744690,3520608582,598981189,4151959214,85089709,373468761,3827903834,3124367742,1213305469,1526817161,2842354314,2107672161,2412447074,2627466902,1861252501,1098587580,3004210879,2688576843,1378610760,2262928035,1955203488,1742404180,2511436119,3416409459,969524848,714683780,3639785095,205050476,4266873199,3976438427,526918040,1361435347,2739821008,2954799652,1114974503,2529119692,1691668175,2005155131,2247081528,3690758684,697762079,986182379,3366744552,476452099,3993867776,4250756596,255256311,1640403810,2477592673,2164122517,1922457750,2791048317,1412925310,1197962378,3037525897,3944729517,427051182,170179418,4165941337,746937522,3740196785,3451792453,1070968646,1905808397,2213795598,2426610938,1657317369,3053634322,1147748369,1463399397,2773627110,4215344322,153784257,444234805,3893493558,1021025245,3467647198,3722505002,797665321,2197175160,1889384571,1674398607,2443626636,1164749927,3070701412,2757221520,1446797203,137323447,4198817972,3910406976,461344835,3484808360,1037989803,781091935,3705997148,2460548119,1623424788,1939049696,2180517859,1429367560,2807687179,3020495871,1180866812,410100952,3927582683,4182430767,186734380,3756733383,763408580,1053836080,3434856499,2722870694,1344288421,1131464017,2971354706,1708204729,2545590714,2229949006,1988219213,680717673,3673779818,3383336350,1002577565,4010310262,493091189,238226049,4233660802,2987750089,1082061258,1395524158,2705686845,1972364758,2279892693,2494862625,1725896226,952904198,3399985413,3656866545,731699698,4283874585,222117402,510512622,3959836397,3280807620,837199303,582374963,3504198960,68661723,4135334616,3844915500,390545967,1230274059,3141532936,2825850620,1510247935,2395924756,2091215383,1878366691,2644384480,3553878443,565732008,854102364,3229815391,340358836,3861050807,4117890627,119113024,1493875044,2875275879,3090270611,1247431312,2660249211,1828433272,2141937292,2378227087,3811616794,291187481,34330861,4032846830,615137029,3603020806,3314634738,939183345,1776939221,2609017814,2295496738,2058945313,2926798794,1545135305,1330124605,3173225534,4084100981,17165430,307568514,3762199681,888469610,3332340585,3587147933,665062302,2042050490,2346497209,2559330125,1793573966,3190661285,1279665062,1595330642,2910671697];

Methods

from(value)

staticfrom(value:ArrayBuffer|ArrayBufferView|CRC32CValidator|string|number):CRC32C;

Generates aCRC32C from a variety of compatable types.

Parameter
NameDescription
valueArrayBuffer |ArrayBufferView |CRC32CValidator | string | number

A number, 4-byteArrayBufferView/Buffer/TypedArray, or 4-byte base64-encoded data (string)

Returns
TypeDescription
CRC32C

toBuffer()

toBuffer():Buffer;

Returns aBuffer representation of the CRC32C value

Returns
TypeDescription
Buffer

toJSON()

toJSON():string;

Returns a JSON-compatible, base64-encoded representation of the CRC32C value.

See

Returns
TypeDescription
string

toString()

toString():string;

Returns a base64-encoded representation of the CRC32C value.

See

Returns
TypeDescription
string

update(data)

update(data:Buffer):void;

Calculates a CRC32C from a provided buffer.

Implementation inspired from: - - -

Parameter
NameDescription
dataBuffer

TheBuffer to generate the CRC32C from

Returns
TypeDescription
void

validate(input)

validate(input:Buffer|CRC32CValidator|string|number):boolean;

Validates a provided input to the current CRC32C value.

Parameter
NameDescription
input__global.Buffer |CRC32CValidator | string | number

A Buffer,CRC32C-compatible object, base64-encoded data (string), or signed 32-bit integer

Returns
TypeDescription
boolean

valueOf()

valueOf():number;

Returns thenumber representation of the CRC32C value as a signed 32-bit integer

See

Returns
TypeDescription
number

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Last updated 2025-10-30 UTC.