react-native-hash
v3.0.3
Published
A hashing library for react-native
Downloads
9,778
Maintainers
Readme
react-native-hash
Getting started
$ npm install react-native-hash --save
compatibility
| Criteria | Release Version |
| ---------------------- | ------------------ |
| Android API < 16
| unsupported |
| 16
<= Android API < 21
| 1.x |
| Gradle >= 7
| >= 2.0.1 |
Usage
Constants
HashAlgorithms : Record<string, string>;
HmacAlgorithms : Record<string, string>;
Events : Record<string, string>;
Example
import { CONSTANTS } from 'react-native-hash';
const hashAlgorithm = CONSTANTS.HashAlgorithms.sha256;
const hmacAlgorithm = CONSTANTS.HmacAlgorithms.HmacSHA512;
const EventName = CONSTANTS.Events.onBatchReccieved;
Cross Platform API
Native hashing is only implemented on Android, however, until I get around writing native modules for other platforms ( or if some kind soul makes a PR), you can use JSHash
and JSHmac
:
NOTE
if you are using expo, JSHash
and JSHmac
should work out of the box, native implementations however, will require you to eject the project.
Hash Algorithm :
"MD2" | "MD5"| "SHA-1"| "SHA-224" | "SHA-256" | "SHA-384" | "SHA-512"| "keccak"
HMac Algorithm :
"HmacMD5" | "HmacSHA1" | "HmacSHA224" | "HmacSHA256" | "HmacSHA384" | "HmacSHA512"
API:
JSHash(message: string, algorithm: string):Promise<string>;
JSHmac(message: string, secret: string, algorithm: string): Promise<string>;
Example :
import { JSHash, JSHmac, CONSTANTS } from "react-native-hash";
JSHash("message", CONSTANTS.HashAlgorithms.sha256)
.then(hash => console.log(hash))
.catch(e => console.log(e));
JSHmac("message", "SecretKey", CONSTANTS.HmacAlgorithms.HmacSHA256)
.then(hash => console.log(hash))
.catch(e => console.log(e));
- keccak implementation defaults to 512 and is not tested against all attack vectors.
check out the example for more information.
React Hooks
Following hooks are available:
useHash(
hmacAlgo?: string = "MD5",
initialMessage: ?string = "hello World",
): [
hashed: string,
setMessage: (message: string) => Promise<void>,
setAlgo: (algo: string) => Promise<void>
];
useHmac(
hmacAlgo?: string = "HmacMD5",
initialMessage: ?string = "hello World",
initialSecret: ?string = "SecretKey"
): [
hashed: string,
setMessage: (message: string) => Promise<void>,
setAlgo: (algo: string) => Promise<void>,
setSecret: (secret: string) => Promise<void>
];
Usage
const [hashedMessage, setHashAlgo, setHashMessage] = useHash();
const [hmac, setHmacAlgo, setHmacMessage, setHmacSecret] = useHmac();
hashedMessage
and hmac
will update after a call to one of the setters is resolved.
note that all the setter functions of these two hooks are async and will return a promise
.
check out the [example] for more information.
Android
Hash Algorithm :
"md2" | "md5" | "sha1" | "sha224" | "sha256" | "sha384" | "sha512"
HMAC Algorithm :
"HmacMD5" | "HmacSHA1" | "HmacSHA224" | "HmacSHA256" | "HmacSHA384" | "HmacSHA512" | "PBEwithHmacSHA"
"PBEwithHmacSHA1" | "PBEwithHmacSHA224" | "PBEwithHmacSHA256" | "PBEwithHmacSHA384" | "PBEwithHmacSHA512"
API
hashFile(uri: string, algorithm: string):Promise<string>;
hashFilesForFolder(uri: string, algorithm: string, minFileSize: number, maxFileSize: number, extensionFilter: string, batchSize: number, delay: number ): Promise<{FilesCount:number, isFinalBatch: bool, batchNumber: number, results: Record<string, string>}>;
- pass an empty string
""
to the hashFilesForFolder as extensionFilter if you dont want to filter the results. - if you pass -1 as batchSize, the function will return a promise which resolves into an object with all hashes
- if you pass any number other than -1 to batchSize, instead of returning the results, null will be returned, but when each batch is ready an event will be fired.
- the delay parameter determines how many ms should the native thread waits before sending the next batch.
- check
"press to hash Folder with events"
and"press to hash Folder"
in the example app for more details
hashFilesForFolders(uri: string, algorithm: string, minFileSize: number, maxFileSize: number, extensionFilter: string, batchSize: number, delay: number ): Promise<{FilesCount:number, isFinalBatch: bool, batchNumber: number, results: Record<string, string>}>;
- behaves the same as the
hashFilesForFolder
, but reccieves an String array as first argument.
hashUrl(url: string, HTTPMethod: string, headers: Record<string, string>, algorithm: string):Promise<string>;
hashString(message: string, algorithm: string):Promise<string>;
generateHmac(message: string, key: string, algorithm: string):Promise<string>;
Example
import RnHash, { CONSTANTS } from "react-native-hash";
RnHash.hashFile("uri", CONSTANTS.HashAlgorithms.sha256)
.then(hash => console.log(hash))
.catch(e => console.log(e));
RNHash.hashFilesForFolders(
["uri", "anotherUri"],
CONSTANTS.HashAlgorithms.sha256,
0,
1048576,
".mp3",
-1,
0
)
.then(b => setFolderString(JSON.stringify(b)))
.catch(er => console.log(er));
RNHash.hashFilesForFolder(
"uri",
CONSTANTS.HashAlgorithms.sha256,
0,
1048576,
".mp3",
-1,
0
)
.then(b => setFolderString(JSON.stringify(b)))
.catch(er => console.log(er));
RnHash.hashUrl(
"url",
"HTTPMethod",
{ "Content-type": "application/json" },
CONSTANTS.HashAlgorithms.sha256
)
.then(hash => console.log(hash))
.catch(e => console.log(e));
RnHash.hashString("message", CONSTANTS.HashAlgorithms.sha256)
.then(hash => console.log(hash))
.catch(e => console.log(e));
RNHash.generateHmac("message", "secretKey", CONSTANTS.HmacAlgorithms.HmacSHA512)
.then(HMAC => console.log(HMAC))
.catch(er => console.log(er));
check out the example for more information.
Topics
Hashing files and urls are only supported on android at this point
Todo
- SHA-3
- other Keccak lengths
Status
| | iOS | Android | windows | | ---------------------- | ------------------ | ------------------ | ------------------ | | hash local files | :x: | :heavy_check_mark: | :x: | | hash network assets | :x: | :heavy_check_mark: | :x: | | hash network responses | :x: | :heavy_check_mark: | :x: | | hash bundle assets | :x: | :x: | :x: | | hash strings | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | | HMAC | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
- all PRs are welcome
Credits
JSHash and JSHMac functions use some Open Source code snippets. You can find the source code of their open source projects along with license information below. We acknowledge and are grateful to these developers for their contributions to open source.
Project: crypto-es https://github.com/entronad/crypto-es
License (MIT) https://github.com/entronad/crypto-es/blob/master/LICENSE