playground.ts

import { Client } from 'xrpl'
import { encode, XrplDefinitions } from 'ripple-binary-codec'
// import { verify } from 'ripple-keypairs'
import cbor from 'cbor'
import { p256 } from '@noble/curves/p256'
import { sha256 } from '@noble/hashes/sha256'

// const result = verify(
//   '',
//   '304402203E4F7A18DACD45F8FDCC77ED3C2AE46B7F78DC4C6DA2BC9999C51124ECE24F6B022003E84D608C5C5A8388C382A9B811C87B44C2F3B9A0B1186E880BC4CCCA648EFB',
//   'A5010203262001215820A106DEC8E5477C96CCB93A3059EC1619F55052EF9AAC63BC3D258BF3F15235E7225820A76664CECDF1C59EDE8579F6EB39FC12915CEBB3873B51B2A10680613417109F'
// )
// console.log(result)

// const coseStruct = cbor.decodeFirstSync(
//   Buffer.from(
//     'A5010203262001215820A106DEC8E5477C96CCB93A3059EC1619F55052EF9AAC63BC3D258BF3F15235E7225820A76664CECDF1C59EDE8579F6EB39FC12915CEBB3873B51B2A10680613417109F',
//     'hex'
//   )
// )
// const alg = coseStruct.get(3) // 3 is the COSE key for 'alg'
// console.log(alg)

function base64urlToBuffer(hex: string): string {
  let b64 = Buffer.from(hex, 'hex').toString('base64')
  b64 = b64.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '')
  return b64
}

export function main() {
  const hex = '5135BB143171C4BC89F83195D697DF9FB345D977'
  console.log(base64urlToBuffer(hex))

  //   UTW7FDFxxLyJ+DGV1pffn7NF2Xc=
  //   UTW7FDFxxLyJ-DGV1pffn7NF2Xc
}

export async function main1() {
  const client = new Client('ws://localhost:6006')
  await client.connect()

  const liveDefinitions = await client.request({
    command: 'server_definitions',
  })
  const _liveDefinitions = JSON.parse(JSON.stringify(liveDefinitions.result))
  const definitions = new XrplDefinitions(_liveDefinitions)

  const transaction = {
    TransactionType: 'Payment',
    Account: 'rfQuwvSNDQXwZQGMtrLVDxUyYG7MFdZKou',
    Fee: '12',
    Destination: 'rPMh7Pi9ct699iZUTWaytJUoHcJ7cgyziK',
    Amount: '1000000',
    Flags: 0,
    NetworkID: 21339,
    Sequence: 8,
    LastLedgerSequence: 29,
    PasskeySignature: {
      PasskeyID: '523E557C554DD4454A8BC4413194E3B178519919',
      AuthenticatorData:
        '49960DE5880E8C687434170F6476605B8FE4AEB9A28632C7995CF3BA831D97631D00000000',
      ClientDataJSON:
        '7B2274797065223A22776562617574686E2E676574222C226368616C6C656E6765223A224D5559774D54497852444D3452454D7A4F444244516A55324D6A6B354F445578525445324D5455324D4459304E6B46434E305A424D555A44526B4535517A55334F554E464D446B784D6A64444E444A444E3059795177222C226F726967696E223A22687474703A2F2F6C6F63616C686F73743A33303030222C2263726F73734F726967696E223A66616C73657D',
      Signature:
        '304402203E4F7A18DACD45F8FDCC77ED3C2AE46B7F78DC4C6DA2BC9999C51124ECE24F6B022003E84D608C5C5A8388C382A9B811C87B44C2F3B9A0B1186E880BC4CCCA648EFB',
      // Algorithm: -7,
    },
    SigningPubKey:
      'A5010203262001215820A106DEC8E5477C96CCB93A3059EC1619F55052EF9AAC63BC3D258BF3F15235E7225820A76664CECDF1C59EDE8579F6EB39FC12915CEBB3873B51B2A10680613417109F',
  }

  const txBlob = encode(transaction, definitions)

  const submit = await client.request({
    command: 'submit',
    tx_blob: txBlob,
  })

  console.log(submit)
  if (client.connection.getUrl() === 'ws://localhost:6006') {
    await client.request({
      // @ts-ignore -- ignore
      command: 'ledger_accept',
    })
  }
}

export async function main2() {
  const authenticatorDataHex =
    '49960DE5880E8C687434170F6476605B8FE4AEB9A28632C7995CF3BA831D97631D00000000'
  const clientDataJSONHex =
    '7B2274797065223A22776562617574686E2E676574222C226368616C6C656E6765223A224877456830343344674D74574B5A685234574657426B6172663648382D7078586E4F43524A385173667977222C226F726967696E223A22687474703A2F2F6C6F63616C686F73743A33303030222C2263726F73734F726967696E223A66616C73652C226F746865725F6B6579735F63616E5F62655F61646465645F68657265223A22646F206E6F7420636F6D7061726520636C69656E74446174614A534F4E20616761696E737420612074656D706C6174652E205365652068747470733A2F2F676F6F2E676C2F796162506578227D'
  const pubkeyHex =
    'A5010203262001215820A106DEC8E5477C96CCB93A3059EC1619F55052EF9AAC63BC3D258BF3F15235E7225820A76664CECDF1C59EDE8579F6EB39FC12915CEBB3873B51B2A10680613417109F'
  const signatureHex =
    '3046022100BDCB647A630BCDF6BB6BF8C5A14E188F6432D986CACE92AF05B464DCC3DA8C15022100A2B94D6B860101D721C4B28E1BF55BD0AA1CC22D2AF915B004C427EB48B660A2'

  const coseBuf = Buffer.from(pubkeyHex, 'hex')

  // Decode COSE_Key
  const coseStruct = cbor.decodeFirstSync(coseBuf)

  // Get x and y
  const x = coseStruct.get(-2) // This should be x
  const y = coseStruct.get(-3) // This should be y

  // Compose uncompressed public key
  // const uncompressed = Buffer.concat([Buffer.from([0x04]), x, y]) // 65 bytes
  const yBigInt = BigInt('0x' + y.toString('hex'))
  const isYEven = yBigInt % 2n === 0n
  const compressedPrefix = isYEven ? 0x02 : 0x03
  const compressed = Buffer.concat([Buffer.from([compressedPrefix]), x])
  // const point = p256.ProjectivePoint.fromHex(uncompressed)
  console.log('Compressed Public Key:', compressed.toString('hex').length)

  const authenticatorData = Buffer.from(authenticatorDataHex, 'hex')
  const clientDataJSON = Buffer.from(clientDataJSONHex, 'hex')

  // Step 1: Hash clientDataJSON
  const clientDataHash = sha256(clientDataJSON)

  // Step 2: Concatenate authenticatorData and clientDataHash
  const message = Buffer.concat([
    authenticatorData,
    Buffer.from(clientDataHash),
  ])

  // const rawSignature = p256.Signature.fromDER(signatureHex)
  // const isValid = p256.verify(
  //   rawSignature.toCompactRawBytes(),
  //   message,
  //   uncompressed,
  //   {
  //     prehash: true,
  //   }
  // )
  const signature = Buffer.from(signatureHex, 'hex')
  const isValid = p256.verify(signature, message, compressed, {
    prehash: true,
  })
  if (isValid) {
    console.log('Signature is valid')
  } else {
    console.log('Signature is NOT valid')
  }
}

// main()
// main1()
main2()