code: func New() crypt.Crypter {
  	return &crypter{
  		common.Salt{
  			MagicPrefix:   []byte(MagicPrefix),
  			SaltLenMin:    SaltLenMin,
  			SaltLenMax:    SaltLenMax,
  			RoundsDefault: RoundsDefault,
  			RoundsMin:     RoundsMin,
  			RoundsMax:     RoundsMax,
  		},
  	}
  }
docs: // New returns a new Crypter computing the SHA512-crypt password hashing.