@scrow/tapscript/src/lib/sig/segwit/sign.ts

A development build of tapscript. Built for escrow.

import { Buff, Bytes } from '@cmdcode/buff'
import { noble }       from '@cmdcode/crypto-tools'
import { hash_tx }     from './hash.js'

import {
  SigHashOptions,
  TxBytes,
  TxData
} from '../../../types/index.js'

export function sign_tx (
  seckey   : Bytes,
  txdata   : TxBytes | TxData,
  config   : SigHashOptions = {}
) : Buff {
  const { sigflag = 0x01 } = config
  const sec  = Buff.bytes(seckey)
  const hash = hash_tx(txdata, config)
  const sig  = noble.secp.sign(hash, sec).toDERRawBytes(true)
  return Buff.join([ sig, sigflag ])
}