public string CheckBase58Address(string address)
{
if (!Base58.IsValid(address))
{
return("The given address contains invalid base-58 characters.");
}
if (!Base58.IsValidWithChecksum(address))
{
return("The given address has an invalid checksum.");
}
byte[] addrBa = Base58.DecodeWithChecksum(address);
if (addrBa[0] != ConstantsFO.P2pkhAddrFirstByte && addrBa[0] != ConstantsFO.P2shAddrFirstByte)
{
return("The given address starts with an invalid byte.");
}
if (addrBa.Length != 21)
{
return("The given address byte length is invalid.");
}
return($"The given address is a valid base-58 encoded address used for " +
$"{(addrBa[0] == ConstantsFO.P2pkhAddrFirstByte ? "P2PKH" : "P2SH")} scripts.");
}
public string CheckPrivateKey(string key)
{
if (!Base58.IsValid(key))
{
return("The given key contains invalid base-58 characters.");
}
if (!Base58.IsValidWithChecksum(key))
{
return("The given key has an invalid checksum.");
}
byte[] keyBa = Base58.DecodeWithChecksum(key);
if (keyBa[0] != ConstantsFO.PrivKeyFirstByte)
{
return($"Invalid first key byte (actual={keyBa[0]}, expected={ConstantsFO.PrivKeyFirstByte}).");
}
if (keyBa.Length == 33)
{
if (!IsPrivateKeyInRange(keyBa.SubArray(1)))
{
return("Invalid key integer value (outside of the range defined by secp256k1 curve).");
}
return("The given key is a valid uncompressed private key.");
}
else if (keyBa.Length == 34)
{
if (keyBa[^ 1] != ConstantsFO.PrivKeyCompLastByte)
public bool CheckBase58Bip38(string bip38, out string message)
{
if (!Base58.IsValid(bip38))
{
message = "The given BIP-38 string contains invalid base-58 characters.";
return(false);
}
if (!Base58.IsValidWithChecksum(bip38))
{
message = "The given BIP-38 string has an invalid checksum.";
return(false);
}
byte[] data = Base58.DecodeWithChecksum(bip38);
if (data.Length != ConstantsFO.Bip38ByteLen)
{
message = "The given BIP-38 string has an invalid byte length.";
return(false);
}
if (data[0] != 1 || (data[1] != 0x42 && data[1] != 0x43))
{
message = "The given BIP-38 string has invalid starting bytes.";
return(false);
}
message = "The given BIP-38 string is valid.";
return(true);
}
public void Validate(string address)
{
if (string.IsNullOrEmpty(address))
{
AddError(nameof(address), "Address can not be empty!");
}
else if (address.StartsWith("1") || address.StartsWith("3"))
{
Base58 b58enc = new Base58();
if (b58enc.IsValid(address))
{
RemoveError(nameof(address), "");
}
else
{
AddError(nameof(address), "Invalid Base58 encoded address!");
}
}
else if (address.StartsWith("bc"))
{
Bech32 b32enc = new Bech32();
if (b32enc.IsValid(address))
{
RemoveError(nameof(address), "");
}
else
{
AddError(nameof(address), "Invalid Bech32 encoded address!");
}
}
else
{
AddError(nameof(address), "Invalid address format!");
}
}
public string CheckBase58Bip38(string bip38)
{
if (!b58Enc.HasValidChars(bip38))
{
return("The given BIP-38 string contains invalid base-58 characters.");
}
if (!b58Enc.IsValid(bip38))
{
return("The given BIP-38 string has an invalid checksum.");
}
byte[] data = b58Enc.DecodeWithCheckSum(bip38);
if (data.Length != ConstantsFO.Bip38ByteLen)
{
return("The given BIP-38 string has an invalid byte length.");
}
if (data[0] != 1 || (data[1] != 0x42 && data[1] != 0x43))
{
return("The given BIP-38 string has invalid starting bytes.");
}
return("The given BIP-38 string is valid.");
}
[InlineData("1BvBMSOYstWetqTFn5Au4m4GFg7xJaNVN2", false)] // Invalid char
public void IsValidTest(string s, bool expected)
{
Assert.Equal(expected, encoder.IsValid(s));
}
public void HasValidTest(string s, bool expected)
{
Assert.Equal(expected, Base58.IsValid(s));
}
internal bool TryGetType(string address, out PubkeyScriptType scrType, out byte[] hash)
{
scrType = PubkeyScriptType.Unknown;
if (string.IsNullOrWhiteSpace(address))
{
hash = null;
return(false);
}
try
{
if (b58Encoder.IsValid(address))
{
byte[] decoded = b58Encoder.DecodeWithCheckSum(address);
if (decoded.Length != hashFunc.HashByteSize + 1)
{
hash = null;
return(false);
}
else if (decoded[0] != versionByte_P2pkh_MainNet ||
decoded[0] != versionByte_P2pkh_TestNet ||
decoded[0] != versionByte_P2pkh_RegTest)
{
scrType = PubkeyScriptType.P2PKH;
hash = decoded.SubArray(1);
return(true);
}
else if (decoded[0] != versionByte_P2sh_MainNet ||
decoded[0] != versionByte_P2sh_TestNet ||
decoded[0] != versionByte_P2sh_RegTest)
{
scrType = PubkeyScriptType.P2SH;
hash = decoded.SubArray(1);
return(true);
}
else
{
hash = null;
return(false);
}
}
else if (b32Encoder.IsValid(address))
{
byte[] decoded = b32Encoder.Decode(address, out byte witVer, out string hrp);
if (witVer != 0)
{
hash = null;
return(false);
}
else if (decoded.Length == hashFunc.HashByteSize &&
hrp == hrp_MainNet ||
hrp == hrp_TestNet ||
hrp == hrp_RegTest)
{
scrType = PubkeyScriptType.P2WPKH;
hash = decoded;
return(true);
}
else if (decoded.Length == witHashFunc.HashByteSize &&
hrp == hrp_MainNet ||
hrp == hrp_TestNet ||
hrp == hrp_RegTest)
{
scrType = PubkeyScriptType.P2WPKH;
hash = decoded;
return(true);
}
else
{
hash = null;
return(false);
}
}
}
catch (Exception) { }
hash = null;
return(false);
}