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Gathering detailed insights and metrics for nodejs-jsencrypt

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Gathering detailed insights and metrics for nodejs-jsencrypt

nodejs-jsencrypt - 3.0.0-rc.1 | npmpackage.info

nodejs-jsencrypt

A zero-dependency Javascript library to perform OpenSSL RSA Encryption, Decryption, and Key Generation.

3.0.0-rc.1

6,750

NOASSERTION

JavaScript

634.34 kB

2.7

Installations

npm install nodejs-jsencrypt

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Node Version

10.6.0

NPM Version

6.13.4 Pull Requests

Open

16

Total

101

Closed

32

Merged

53

Issues

Open

145

Total

218

Closed

73

Releases

Unable to fetch releases

Languages

JavaScript

TypeScript

HTML

CSS

Shell

Ruby

JavaScript (75.34%)

TypeScript (23.3%)

HTML (0.89%)

CSS (0.43%)

Shell (0.03%)

Ruby (0.01%)

Developer

travist

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

NOASSERTION License

6,750 Stars

248 Commits

2,020 Forks

176 Watchers

8 Branches

29 Contributors

Updated on Jul 11, 2025

Maintainers

View All 29 Contributors

Package Meta Information

Latest Version

3.0.0-rc.1

Package Id

nodejs-jsencrypt@3.0.0-rc.1

Unpacked Size

634.34 kB

Size

138.17 kB

File Count

NPM Version

6.13.4

Node Version

10.6.0

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Website

http://travistidwell.com/jsencrypt

Introduction

When browsing the internet looking for a good solution to RSA Javascript encryption, there is a whole slew of libraries that basically take the fantastic work done by Tom Wu @ http://www-cs-students.stanford.edu/~tjw/jsbn/ and then modify that code to do what they want.

What I couldn't find, however, was a simple wrapper around this library that basically uses the library practically untouched, but adds a wrapper to provide parsing of actual Private and Public key-pairs generated with OpenSSL.

This library is the result of these efforts.

How to use this library.

This library should work hand-in-hand with openssl. With that said, here is how to use this library.

Within your terminal (Unix based OS) type the following.

openssl genrsa -out rsa_1024_priv.pem 1024

This generates a private key, which you can see by doing the following...

cat rsa_1024_priv.pem

You can then copy and paste this in the Private Key section of within index.html.
Next, you can then get the public key by executing the following command.

openssl rsa -pubout -in rsa_1024_priv.pem -out rsa_1024_pub.pem

You can see the public key by typing...

cat rsa_1024_pub.pem

Now copy and paste this in the Public key within the index.html.
Now you can then convert to and from encrypted text by doing the following in code.

1<!doctype html>
2<html>
3  <head>
4    <title>JavaScript RSA Encryption</title>
5    <script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
6    <script src="bin/jsencrypt.min.js"></script>
7    <script type="text/javascript">
8
9      // Call this code when the page is done loading.
10      $(function() {
11
12        // Run a quick encryption/decryption when they click.
13        $('#testme').click(function() {
14
15          // Encrypt with the public key...
16          var encrypt = new JSEncrypt();
17          encrypt.setPublicKey($('#pubkey').val());
18          var encrypted = encrypt.encrypt($('#input').val());
19
20          // Decrypt with the private key...
21          var decrypt = new JSEncrypt();
22          decrypt.setPrivateKey($('#privkey').val());
23          var uncrypted = decrypt.decrypt(encrypted);
24
25          // Now a simple check to see if the round-trip worked.
26          if (uncrypted == $('#input').val()) {
27            alert('It works!!!');
28          }
29          else {
30            alert('Something went wrong....');
31          }
32        });
33      });
34    </script>
35  </head>
36  <body>
37    <label for="privkey">Private Key</label><br/>
38    <textarea id="privkey" rows="15" cols="65">-----BEGIN RSA PRIVATE KEY-----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52-----END RSA PRIVATE KEY-----</textarea><br/>
53    <label for="pubkey">Public Key</label><br/>
54    <textarea id="pubkey" rows="15" cols="65">-----BEGIN PUBLIC KEY-----
55MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlOJu6TyygqxfWT7eLtGDwajtN
56FOb9I5XRb6khyfD1Yt3YiCgQWMNW649887VGJiGr/L5i2osbl8C9+WJTeucF+S76
57xFxdU6jE0NQ+Z+zEdhUTooNRaY5nZiu5PgDB0ED/ZKBUSLKL7eibMxZtMlUDHjm4
58gwQco1KRMDSmXSMkDwIDAQAB
59-----END PUBLIC KEY-----</textarea><br/>
60    <label for="input">Text to encrypt:</label><br/>
61    <textarea id="input" name="input" type="text" rows=4 cols=70>This is a test!</textarea><br/>
62    <input id="testme" type="button" value="Test Me!!!" /><br/>
63  </body>
64</html>

Look at how http://www.travistidwell.com/jsencrypt/example.html works to get a better idea.
Signing and verification works in a similar way.

1// Sign with the private key...
2var sign = new JSEncrypt();
3sign.setPrivateKey($('#privkey').val());
4var signature = sign.sign($('#input').val(), CryptoJS.SHA256, "sha256");
5
6// Verify with the public key...
7var verify = new JSEncrypt();
8verify.setPublicKey($('#pubkey').val());
9var verified = verify.verify($('#input').val(), signature, CryptoJS.SHA256);
10
11// Now a simple check to see if the round-trip worked.
12if (verified) {
13  alert('It works!!!');
14}
15else {
16  alert('Something went wrong....');
17}

Note that you have to provide the hash function. In this example we use one from the CryptoJS library, but you can use whichever you want.
Also, unless you use a custom hash function, you should provide the hash type to the sign method. Possible values are: md2, md5, sha1, sha224, sha256, sha384, sha512, ripemd160.

Other Information

This library heavily utilizes the wonderful work of Tom Wu found at http://www-cs-students.stanford.edu/~tjw/jsbn/.

This jsbn library was written using the raw variables to perform encryption. This is great for encryption, but most private keys use a Private Key in the PEM format seen below.

1024 bit RSA Private Key in Base64 Format

This library simply takes keys in the following format, and translates it to those variables needed to perform the encryptions used in Tom Wu's library.

Here are some good resources to investigate further.

With this information, we can translate a private key format to the variables required with the jsbn library from Tom Wu by using the following mappings.

modulus => n
public exponent => e
private exponent => d
prime1 => p
prime2 => q
exponent1 => dmp1
exponent2 => dmq1
coefficient => coeff

No vulnerabilities found.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

9

License

Determines if the project has defined a license.

5

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Maintained

Determines if the project is "actively maintained".

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

SAST

Determines if the project uses static code analysis.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

2.7

/10

Last Scanned on 2025-06-30

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

Other packages similar to nodejs-jsencrypt

Other packages similar to nodejs-jsencrypt

nodejs-jsencrypt

Installations

Developer Guide

No

CommonJS

10.6.0

6.13.4

Pull Requests

16

101

32

53

Issues

145

218

73

Releases

Unable to fetch releases

Languages

Developer

Download Statistics

GitHub Statistics

Maintainers

Package Meta Information

Total Downloads

NaN

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

Website

Introduction

How to use this library.

Other Information

1024 bit RSA Private Key in Base64 Format

10

9

5

0

0

0

0

0

0

2.7

/10