INNER CODE UNIT · Go

decryptWithPassword

volodymyrprokopyuk/go-blockchain · chain/account.go:176

func decryptWithPassword(ciph, pass []byte) ([]byte, error) {
  salt, ciph := ciph[:encKeyLen], ciph[encKeyLen:]
  key := argon2.IDKey(pass, salt, 1, 256, 1, encKeyLen)
  blk, err := aes.NewCipher(key)
  if err != nil {
    return nil, err
  }
  gcm, err := cipher.NewGCM(blk)
  if err != nil {
    return nil, err
  }
  nonceLen := gcm.NonceSize()
  nonce, ciph := ciph[:nonceLen], ciph[nonceLen:]
  msg, err := gcm.Open(nil, nonce, ciph, nil)
  if err != nil {
    return nil, err
  }
  return msg, nil

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