crypto/csp/util.go

   1 // csp is a package of cipher service provider
   2 package csp
   3
   4 import (
   5         "crypto"
   6         "io"
   7
   8         vcrypto "github.com/vapor/crypto"
   9         edchainkd "github.com/vapor/crypto/ed25519/chainkd"
  10 )
  11
  12 // Utility functions
  13
  14 func NewXKeys(r io.Reader) (xprv vcrypto.XPrvKeyer, xpub vcrypto.XPubKeyer, err error) {
  15         // TODO: if ... create sm2 xprv and xpub
  16         // return .....
  17
  18         // if ... create ed25519 xprv and xpub
  19         return edchainkd.NewXKeys(r)
  20 }
  21
  22 func XPubKeys(xpubs []vcrypto.XPubKeyer) []crypto.PublicKey {
  23         res := make([]crypto.PublicKey, 0, len(xpubs))
  24         for _, xpub := range xpubs {
  25                 switch xpb := xpub.(type) {
  26                 case edchainkd.XPub:
  27                         res = append(res, xpb.PublicKey())
  28                 }
  29         }
  30         return res
  31 }
  32
  33 func DeriveXPubs(xpubs []vcrypto.XPubKeyer, path [][]byte) []vcrypto.XPubKeyer {
  34         res := make([]vcrypto.XPubKeyer, 0, len(xpubs))
  35         for _, xpub := range xpubs {
  36                 switch xpb := xpub.(type) {
  37                 case edchainkd.XPub:
  38                         d := xpb.Derive(path)
  39                         res = append(res, d)
  40                 }
  41         }
  42         return res
  43 }