func BitcoinDecodeBase58Address(addr string) (Address, error) {
b, err := base58.Base582Hex(addr)
if err != nil {
return Address{}, err
}
return BitcoinAddressFromBytes(b)
}
//extracts a seckey from wallet import format
func SecKeyFromWalletImportFormat(input string) (SecKey, error) {
b, err := base58.Base582Hex(input)
if err != nil {
return SecKey{}, err
}
//1+32+1+4
if len(b) != 38 {
//log.Printf("len= %v ", len(b))
return SecKey{}, errors.New("invalid length")
}
if b[0] != 0x80 {
return SecKey{}, errors.New("first byte invalid")
}
if b[1+32] != 0x01 {
return SecKey{}, errors.New("invalid 33rd byte")
}
b2 := DoubleSHA256(b[0:34])
chksum := b[34:38]
if !bytes.Equal(chksum, b2[0:4]) {
return SecKey{}, errors.New("checksum fail")
}
seckey := b[1:33]
if len(seckey) != 32 {
log.Panic("...")
}
return NewSecKey(b[1:33]), nil
}