How to use @liquality/crypto - 10 common examples

generateRawTx (initiationTx, voutIndex, address, input, locktime) {
    const output = initiationTx.outputs[voutIndex]
    const value = parseInt(reverseBuffer(output.amount).toString('hex'), 16)
    const fee = this.getMethod('calculateFee')(1, 1, 3)
    const amount = value - fee
    const amountLE = Buffer.from(padHexStart(amount.toString(16), 16), 'hex').reverse().toString('hex') // amount in little endian
    const pubKeyHash = addressToPubKeyHash(address)

    return [
      '01000000', // VERSION
      input,
      '01', // NUM OUTPUTS
      amountLE,
      '19', // data size to be pushed
      '76', // OP_DUP
      'a9', // OP_HASH160
      '14', // data size to be pushed
      pubKeyHash, // 
      '88', // OP_EQUALVERIFY
      'ac', // OP_CHECKSIG
      locktime // LOCKTIME
    ].join('')

createSeizableCollateralScript (borrowerPubKey, lenderPubKey, secretHashA1, secretHashA2, secretHashB2, secretHashB3, loanExpiration, biddingExpiration, seizureExpiration) {
    let loanExpirationHex = scriptNumEncode(loanExpiration)
    let biddingExpirationHex = scriptNumEncode(biddingExpiration)
    let seizureExpirationHex = scriptNumEncode(seizureExpiration)

    const borrowerPubKeyHash = hash160(borrowerPubKey)
    const borrowerPubKeyPushDataOpcode = padHexStart((borrowerPubKey.length / 2).toString(16))

    const lenderPubKeyHash = hash160(lenderPubKey)
    const lenderPubKeyPushDataOpcode = padHexStart((lenderPubKey.length / 2).toString(16))

    const loanExpirationPushDataOpcode = padHexStart(loanExpirationHex.length.toString(16))
    const loanExpirationHexEncoded = loanExpirationHex.toString('hex')
    const biddingExpirationPushDataOpcode = padHexStart(biddingExpirationHex.length.toString(16))
    const biddingExpirationHexEncoded = biddingExpirationHex.toString('hex')
    const seizureExpirationPushDataOpcode = padHexStart(seizureExpirationHex.length.toString(16))
    const seizureExpirationHexEncoded = seizureExpirationHex.toString('hex')

    return [
      '63', // OP_IF
      '82', // OP_SIZE
      '01', // OP_PUSHDATA(1)
      '20', // Hex 32

createSeizableCollateralScript (borrowerPubKey, lenderPubKey, secretHashA1, secretHashA2, secretHashB2, secretHashB3, loanExpiration, biddingExpiration, seizureExpiration) {
    let loanExpirationHex = scriptNumEncode(loanExpiration)
    let biddingExpirationHex = scriptNumEncode(biddingExpiration)
    let seizureExpirationHex = scriptNumEncode(seizureExpiration)

    const borrowerPubKeyHash = hash160(borrowerPubKey)
    const borrowerPubKeyPushDataOpcode = padHexStart((borrowerPubKey.length / 2).toString(16))

    const lenderPubKeyHash = hash160(lenderPubKey)
    const lenderPubKeyPushDataOpcode = padHexStart((lenderPubKey.length / 2).toString(16))

    const loanExpirationPushDataOpcode = padHexStart(loanExpirationHex.length.toString(16))
    const loanExpirationHexEncoded = loanExpirationHex.toString('hex')
    const biddingExpirationPushDataOpcode = padHexStart(biddingExpirationHex.length.toString(16))
    const biddingExpirationHexEncoded = biddingExpirationHex.toString('hex')
    const seizureExpirationPushDataOpcode = padHexStart(seizureExpirationHex.length.toString(16))
    const seizureExpirationHexEncoded = seizureExpirationHex.toString('hex')

    return [
      '63', // OP_IF
      '82', // OP_SIZE
      '01', // OP_PUSHDATA(1)
      '20', // Hex 32
      '88', // OP_EQUALVERIFY
      'a8', // OP_SHA256
      '20', secretHashB2, // OP_PUSHDATA(32) {secretHashB2}
      '88', // OP_EQUALVERIFY
      '76', 'a9', // OP_DUP OP_HASH160

} else if (period === 'seizurePeriod' && !requiresSecret) {
      ifBranch = ['00', '00']
    } else if (period === 'refundPeriod') {
      ifBranch = ['00', '00', '00']
    }

    const encodedSecret = requiresSecret
      ? [
        padHexStart((secret.length / 2).toString(16)), // OP_PUSHDATA({secretLength})
        secret
      ]
      : [] // OP_0

    const signatureEncoded = signature + '01'
    const signaturePushDataOpcode = padHexStart((signatureEncoded.length / 2).toString(16))
    const pubKeyPushDataOpcode = padHexStart((pubKey.length / 2).toString(16))

    const bytecode = [
      signaturePushDataOpcode,
      signatureEncoded,
      pubKeyPushDataOpcode,
      pubKey,
      ...encodedSecret,
      ...ifBranch
    ]

    return bytecode.join('')
  }

createSeizableCollateralScript (borrowerPubKey, lenderPubKey, secretHashA1, secretHashA2, secretHashB2, secretHashB3, loanExpiration, biddingExpiration, seizureExpiration) {
    let loanExpirationHex = scriptNumEncode(loanExpiration)
    let biddingExpirationHex = scriptNumEncode(biddingExpiration)
    let seizureExpirationHex = scriptNumEncode(seizureExpiration)

    const borrowerPubKeyHash = hash160(borrowerPubKey)
    const borrowerPubKeyPushDataOpcode = padHexStart((borrowerPubKey.length / 2).toString(16))

    const lenderPubKeyHash = hash160(lenderPubKey)
    const lenderPubKeyPushDataOpcode = padHexStart((lenderPubKey.length / 2).toString(16))

    const loanExpirationPushDataOpcode = padHexStart(loanExpirationHex.length.toString(16))
    const loanExpirationHexEncoded = loanExpirationHex.toString('hex')
    const biddingExpirationPushDataOpcode = padHexStart(biddingExpirationHex.length.toString(16))
    const biddingExpirationHexEncoded = biddingExpirationHex.toString('hex')
    const seizureExpirationPushDataOpcode = padHexStart(seizureExpirationHex.length.toString(16))
    const seizureExpirationHexEncoded = seizureExpirationHex.toString('hex')

    return [
      '63', // OP_IF
      '82', // OP_SIZE
      '01', // OP_PUSHDATA(1)
      '20', // Hex 32
      '88', // OP_EQUALVERIFY
      'a8', // OP_SHA256
      '20', secretHashB2, // OP_PUSHDATA(32) {secretHashB2}

createRefundableCollateralScript (borrowerPubKey, lenderPubKey, secretHashA2, secretHashB2, secretHashB3, loanExpiration, biddingExpiration) {
    let loanExpirationHex = scriptNumEncode(loanExpiration)
    let biddingExpirationHex = scriptNumEncode(biddingExpiration)

    const borrowerPubKeyHash = hash160(borrowerPubKey)
    const borrowerPubKeyPushDataOpcode = padHexStart((borrowerPubKey.length / 2).toString(16))

    const lenderPubKeyPushDataOpcode = padHexStart((lenderPubKey.length / 2).toString(16))

    const loanExpirationPushDataOpcode = padHexStart(loanExpirationHex.length.toString(16))
    const loanExpirationHexEncoded = loanExpirationHex.toString('hex')
    const biddingExpirationPushDataOpcode = padHexStart(biddingExpirationHex.length.toString(16))
    const biddingExpirationHexEncoded = biddingExpirationHex.toString('hex')

    return [
      '63', // OP_IF
      '82', // OP_SIZE
      '01', // OP_PUSHDATA(1)
      '20', // Hex 32
      '88', // OP_EQUALVERIFY
      'a8', // OP_SHA256

createSeizableCollateralScript (borrowerPubKey, lenderPubKey, secretHashA1, secretHashA2, secretHashB2, secretHashB3, loanExpiration, biddingExpiration, seizureExpiration) {
    let loanExpirationHex = scriptNumEncode(loanExpiration)
    let biddingExpirationHex = scriptNumEncode(biddingExpiration)
    let seizureExpirationHex = scriptNumEncode(seizureExpiration)

    const borrowerPubKeyHash = hash160(borrowerPubKey)
    const borrowerPubKeyPushDataOpcode = padHexStart((borrowerPubKey.length / 2).toString(16))

    const lenderPubKeyHash = hash160(lenderPubKey)
    const lenderPubKeyPushDataOpcode = padHexStart((lenderPubKey.length / 2).toString(16))

    const loanExpirationPushDataOpcode = padHexStart(loanExpirationHex.length.toString(16))
    const loanExpirationHexEncoded = loanExpirationHex.toString('hex')
    const biddingExpirationPushDataOpcode = padHexStart(biddingExpirationHex.length.toString(16))
    const biddingExpirationHexEncoded = biddingExpirationHex.toString('hex')
    const seizureExpirationPushDataOpcode = padHexStart(seizureExpirationHex.length.toString(16))
    const seizureExpirationHexEncoded = seizureExpirationHex.toString('hex')

    return [
      '63', // OP_IF
      '82', // OP_SIZE
      '01', // OP_PUSHDATA(1)

createSeizableCollateralScript (borrowerPubKey, lenderPubKey, secretHashA1, secretHashA2, secretHashB2, secretHashB3, loanExpiration, biddingExpiration, seizureExpiration) {
    let loanExpirationHex = scriptNumEncode(loanExpiration)
    let biddingExpirationHex = scriptNumEncode(biddingExpiration)
    let seizureExpirationHex = scriptNumEncode(seizureExpiration)

    const borrowerPubKeyHash = hash160(borrowerPubKey)
    const borrowerPubKeyPushDataOpcode = padHexStart((borrowerPubKey.length / 2).toString(16))

    const lenderPubKeyHash = hash160(lenderPubKey)
    const lenderPubKeyPushDataOpcode = padHexStart((lenderPubKey.length / 2).toString(16))

    const loanExpirationPushDataOpcode = padHexStart(loanExpirationHex.length.toString(16))
    const loanExpirationHexEncoded = loanExpirationHex.toString('hex')
    const biddingExpirationPushDataOpcode = padHexStart(biddingExpirationHex.length.toString(16))
    const biddingExpirationHexEncoded = biddingExpirationHex.toString('hex')
    const seizureExpirationPushDataOpcode = padHexStart(seizureExpirationHex.length.toString(16))
    const seizureExpirationHexEncoded = seizureExpirationHex.toString('hex')

    return [
      '63', // OP_IF
      '82', // OP_SIZE
      '01', // OP_PUSHDATA(1)
      '20', // Hex 32
      '88', // OP_EQUALVERIFY
      'a8', // OP_SHA256

async generateSecret (message) {
    const secretAddressLabel = 'secretAddress'
    let address
    try {
      const labelAddresses = await this._rpc.jsonrpc('getaddressesbylabel', secretAddressLabel)
      address = Object.keys(labelAddresses)[0]
    } catch (e) { // Label does not exist
      address = await this.getNewAddress('legacy', secretAddressLabel) // Signing only possible with legacy addresses
    }
    const signedMessage = await this.signMessage(message, address)
    const secret = sha256(signedMessage)
    return secret
  }
}

createScript (address) {
    address = addressToString(address)
    const type = base58.decode(address).toString('hex').substring(0, 2).toUpperCase()
    const pubKeyHash = addressToPubKeyHash(address)
    if (type === networks.bitcoin_testnet.pubKeyHash) {
      return [
        '76', // OP_DUP
        'a9', // OP_HASH160
        '14', // data size to be pushed
        pubKeyHash, // 
        '88', // OP_EQUALVERIFY
        'ac' // OP_CHECKSIG
      ].join('')
    } else if (type === networks.bitcoin_testnet.scriptHash) {
      return [
        'a9', // OP_HASH160
        '14', // data size to be pushed
        pubKeyHash, // 
        '87' // OP_EQUAL