The Fula-sec library allows you to create DID (Decentrlized-ID) and Encript/Decypt by using Ed25519 and EDHD algorithms.

Ed25519 KeyPairs are used for creating DID, JWE/JWET/JWT signing identity of token which is passed as iss: attribyte of the payload. In same way opposite side user can verify or/and decrypt by passing their own KeyPair.

Installation

Install NPM package

npm install @functionland/fula-sec --save

Decentralized Identity (DID)

 import {HDKEY, DID} from '@functionland/fula-sec'


 /* Prefix moc keys */
 let password = '123456789'  //User`s password
 let signedKey = '9d7020006cf....f33a32adb81ae'; 
 /* signedKey is the signature coming from the locally-running 
 service of a 3rd party signing authority like Meta Mask Wallet 
 by signing part of the password (not the full password is being 
 sent to the 3rd party signing authority)
 */

 
 /* 1 - Add user`s password */
 const ed = new HDKEY(password);
 
 // A. Sign with chaincode   |chainCode| --->  |Metamask|      
 // B. Get signedKey         |signedKey| <---  |Metamask| 

 /* 2 - Get chainCode to get signedKey from Metamask*/
 const chainCode = ed.chainCode; 
 /*
   chainCode is created from part of the password to be sent 
   to the signing authority like MetaMask wallet to get a unique signature back
 */
 `type:base64pad APSWnk8ULP/v//oseMeSEDadMBSSeX/SOxOREYhjQ7g=`
 /* Send request to metamask*/

 /* 3 - Get KeyPair: Publick and Privete Key */
 const keyPair = ed.createEDKeyPair(signedKey);
 `secretkey:  Uint8Array(64) [
      98,  47,  78, 171, 169, 201, 236, 231, 196,  23, 134,
      135,  78, 180, 195,  93,  22,  57,  41, 213,  53,  86,
      248,  34,  83, 162, 233, 128,  89, 128, 207, 173, 247,
      94, 235,  66, 181, 212, 204, 168, 133, 182,  87, 227,
      217, 233, 122, 169, 145,  20,  42, 110, 229, 233, 239,
      112,  55, 203,  18, 112,  50, 251, 239, 219
   ],
   pubkey:  Uint8Array(32) [
      247,  94, 235,  66, 181, 212, 204,
      168, 133, 182,  87, 227, 217, 233,
      122, 169, 145,  20,  42, 110, 229,
      233, 239, 112,  55, 203,  18, 112,
      50, 251, 239, 219
   ]`
 
 /* keyPair: {
      publicKey,
      secretKey    
 } for creating DID and Encrypt/Decrypt */
 
 

 /* 4 - Add KeyPair in order to generate DID*/
 const did = new DID(keyPair.secretKey);
 
 /* Get DID */
 did.did();
`did:key:z6MknwZL7aFNFGoq7ZaZv47LF7tiqtwV3ZrYRbAJEmUWRRkh`

Json Web Encrypted Token / Time Based Encryption

 import { EncryptJWT, DecryptJWT } from '@functionland/fula-sec'
  
  /* Securly export your wrapped wnfs key */
  const jwet = await new EncryptJWT({ any: 'your sensitive data to encrypt'})
     .setIssuedAt()
     .setNotBefore(Math.floor(Date.now() / 1000))
     .setIssuer(did.did())
     .setAudience(did.did())
     .setExpirationTime('3s')
     .encrypt(keyPair.secretKey);

 /* Verify and decrypt to get your wnfs key within 3 second as declared above */
  const payload = await new DecryptJWT(keyPair.secretKey).verify(jwet)    
   `payload:  {
      aud: 'did:key:z6MknwZL7aFNFGoq7ZaZv47LF7tiqtwV3ZrYRbAJEmUWRRkh',
      exp: 1669043742,
      iat: 1669043738,
      iss: 'did:key:z6MknwZL7aFNFGoq7ZaZv47LF7tiqtwV3ZrYRbAJEmUWRRkh',
      nbf: 1669043738,
      any: 'your sensitive data to encrypt'
   }
   `

Content

• [X] HDKEY Drive
• [X] Identity (DID)
• [X] JWE
• [X] JWET

See the open issues for a full list of proposed features (and known issues).

Development

• You have the opportunity to test it by installing a demo application ->
• Fula documents related to Architecture, Protocol, dApps and and usage can be found on the Function land documentation site

Community

• Connect with function land developers. Questions, support, and discussions: Join the Fx Discord
• Bugs and Feature Requests: Open an issue in the appropriate Github repository
• The latest updates can be found here. Blog, twitter

Maintainers

• Saidov

License

See LICENSE for more information.