Rsa Key Generation In Javascript
It then occurred to me (and a head slapped followed), that I have fairly recently published a library for Javascript RSA encryption which includes private and public key generation for RSA encryption. Not only that, but this is all available online. Asymmetric cryptography also known as public-key encryption uses a public/private key pair to encrypt and decrypt data. In.NET, the RSACryptoServiceProvider and DSACryptoServiceProvider classes are used for asymmetric encryption. An Online RSA Public and Private Key Generator. Sep 6 th, 2013. It then occurred to me (and a head slapped followed), that I have fairly recently published a library for Javascript RSA encryption which includes private and public key generation for RSA encryption. Not only that, but this is.
Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
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: Mirillis action key.
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
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
Rsa Key Generation Example
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 |
Javascript Rsa Encryption
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 In Javascript Pdf
- Cryptographic key length recommendations.
- NIST cryptographic algorithm and key length recommendations.