Rsa Key Generation In Javascript
I was recently in a meeting where a person needed to generate a private andpublic key for RSA encryption, but they were using a PC (Windows). This is somethingthat is easily done via a terminal using ssh-keygen
on Mac and Linux, however on Windows…this tool is not easily accessible to the non-technical person.
For what I have learned about generating RSA keys with C#, RSACryptoServiceProvider gives a pair of keys, a public one and a private one. So what I tried to do was create those 2 keys, getting the public key by creating a new RSACryptoServiceProvider and assigning it a public modulus and a public exponent from the first RSACryptoServiceProvider. Jul 22, 2018 RSA Key Generation using Javascript. This article is dedicated to the key generation part only. I will continue my journey in follow-up articles. Choose two distinct prime numbers p and q. RSA is a public-key cryptosystem developed by MIT professors: Ronald L. Rivest, Adi Shamir, and Leonard M. Adleman in 1977 in an effort to help ensure internet security. As Steve Burnett of RSA Data Security, Inc. Described it, a cryptosystem is simply an algorithm that can convert input data into something unrecognizable (encryption), and convert the unrecognizable data back to its original form (decryption).
It then occurred to me (and a head slapped followed), that I have fairly recentlypublished a library for Javascript RSA encryption which includes private andpublic key generation for RSA encryption. Not only that, but this is allavailable online.
So, if anyone needs an online RSA key generator, look no further than http://travistidwell.com/jsencrypt/demo.
This directly maps to the Open Source GitHub repository found at https://github.com/travist/jsencrypt, soanyone can modify this website to make it better.
And here is an iframe of the RSA key generation tool.
Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Javascript Rsa Encryption Library
Use the generateKey()
method of the SubtleCrypto
interface to generate a new key (for symmetric algorithms) or key pair (for public-key algorithms).
Syntax
Parameters
algorithm
is a dictionary object defining the type of key to generate and providing extra algorithm-specific parameters.- For RSASSA-PKCS1-v1_5, RSA-PSS, or RSA-OAEP: pass an
RsaHashedKeyGenParams
object. - For ECDSA or ECDH: pass anÂ
EcKeyGenParams
object. - For HMAC: pass an
HmacKeyGenParams
object. - For AES-CTR, AES-CBC, AES-GCM, or AES-KW: pass an
AesKeyGenParams
object.
- For RSASSA-PKCS1-v1_5, RSA-PSS, or RSA-OAEP: pass an
extractable
is aBoolean
indicating whether it will be possible to export the key usingSubtleCrypto.exportKey()
orSubtleCrypto.wrapKey()
.keyUsages
 is anArray
indicating what can be done with the newly generated key. Possible values for array elements are:encrypt
: The key may be used toencrypt
messages.decrypt
: The key may be used todecrypt
messages.sign
: The key may be used tosign
messages.verify
: The key may be used toverify
signatures.deriveKey
: The key may be used inderiving a new key
.deriveBits
: The key may be used inderiving bits
.wrapKey
: The key may be used towrap a key
.unwrapKey
: The key may be used tounwrap a key
.
Return value
result
is aPromise
that fulfills with aCryptoKey
(for symmetric algorithms) or aCryptoKeyPair
(for public-key algorithms).
Exceptions
The promise is rejected when the following exception is encountered:
Rsa Key Generation In Javascript Pdf
SyntaxError
- Raised when the result is a
CryptoKey
of typesecret
orprivate
butkeyUsages
is empty. SyntaxError
- Raised when the result is a
CryptoKeyPair
and itsprivateKey.usages
attribute is empty.
Examples
RSA key pair generation
This code generates an RSA-OAEP encryption key pair. See the complete code on GitHub.
Elliptic curve key pair generation
This code generates an ECDSA signing key pair. See the complete code on GitHub.
HMAC key generation
This code generates an HMAC signing key. See the complete code on GitHub.
AES key generation
Clicker heroes 2 cd key generator keygen latest version. This code generates an AES-GCM encryption key. See the complete code on GitHub.
Specifications
Specification | Status | Comment |
---|---|---|
Web Cryptography API The definition of 'SubtleCrypto.generateKey()' in that specification. | Recommendation | Initial definition. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Firefox for Android | Opera for Android | Safari on iOS | Samsung Internet | |
generateKey | ChromeFull support 37 | EdgePartial support12
| FirefoxFull support 34
| IEPartial support11 Notes
| OperaFull support 24 | SafariFull support 7 | WebView AndroidFull support 37 | Chrome AndroidFull support 37 | Firefox AndroidFull support 34
| Opera AndroidFull support 24 | Safari iOSFull support 7 | Samsung Internet AndroidFull support 6.0 |
Legend
- Full support Â
- Full support
- Partial support Â
- Partial support
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.
See also
Rsa Key Generation Javascript
- Cryptographic key length recommendations.
- NIST cryptographic algorithm and key length recommendations.