/// <summary>
/// Decodes user input as either the hexadecimal or PGP word list encoding
/// of a seed and validates the seed length.
/// </summary>
public static byte[] DecodeAndValidateUserInput(string userInput, PgpWordList pgpWordList)
{
if (userInput == null)
{
throw new ArgumentNullException(nameof(userInput));
}
if (pgpWordList == null)
{
throw new ArgumentNullException(nameof(pgpWordList));
}
var decodedInput = DecodeUserInput(userInput, pgpWordList);
if (decodedInput.Length == (SeedLength + 1))
{
// deal with "checksum"
byte[] d = new byte[SeedLength];
Array.Copy(decodedInput, 0, d, 0, SeedLength);
var digest = DoubleSha256(d);
if (decodedInput[SeedLength] != digest[0])
{
throw new ChecksumException("Invalid checksum");
}
}
else if (decodedInput.Length != SeedLength)
{
throw new Exception($"Decoded seed must have byte length {SeedLength}");
}
return(decodedInput);
}
/// <summary>
/// Decodes user input as either the hexadecimal or PGP word list encoding
/// of a seed and validates the seed length.
/// </summary>
public static byte[] DecodeAndValidateUserInput(string userInput, PgpWordList pgpWordList)
{
if (userInput == null)
throw new ArgumentNullException(nameof(userInput));
if (pgpWordList == null)
throw new ArgumentNullException(nameof(pgpWordList));
var decodedInput = DecodeUserInput(userInput, pgpWordList);
switch (decodedInput.Length)
{
// No checksum
case SeedLength:
return decodedInput;
// Extra byte of checksum appended to end
case SeedLength + 1:
var seed = new byte[SeedLength];
Array.Copy(decodedInput, seed, SeedLength);
var digest = DoubleSha256(seed);
if (decodedInput[SeedLength] != digest[0])
{
throw new ChecksumException("Invalid checksum");
}
return seed;
// Wrong size or seed is using a newer format not understood yet
default:
throw new Exception($"Decoded seed must have byte length {SeedLength}");
}
}
/// <summary>
/// Decodes user input as either the hexadecimal or PGP word list encoding
/// of a seed and validates the seed length.
/// </summary>
public static byte[] DecodeAndValidateUserInput(string userInput, PgpWordList pgpWordList)
{
if (userInput == null)
{
throw new ArgumentNullException(nameof(userInput));
}
if (pgpWordList == null)
{
throw new ArgumentNullException(nameof(pgpWordList));
}
var decodedInput = DecodeUserInput(userInput, pgpWordList);
switch (decodedInput.Length)
{
// No checksum
case SeedLength:
return(decodedInput);
// Extra byte of checksum appended to end
case SeedLength + 1:
var seed = new byte[SeedLength];
Array.Copy(decodedInput, seed, SeedLength);
var digest = DoubleSha256(seed);
if (decodedInput[SeedLength] != digest[0])
{
throw new ChecksumException("Invalid checksum");
}
return(seed);
// Wrong size or seed is using a newer format not understood yet
default:
throw new Exception($"Decoded seed must have byte length {SeedLength}");
}
}
/// <summary>
/// Decodes user input as either the hexadecimal or PGP word list encoding
/// of a seed and validates the seed length.
/// </summary>
public static byte[] DecodeAndValidateUserInput(string userInput, PgpWordList pgpWordList)
{
if (userInput == null)
throw new ArgumentNullException(nameof(userInput));
if (pgpWordList == null)
throw new ArgumentNullException(nameof(pgpWordList));
var decodedInput = DecodeUserInput(userInput, pgpWordList);
if (decodedInput.Length == (SeedLength + 1))
{
// deal with "checksum"
byte[] d = new byte[SeedLength];
Array.Copy(decodedInput, 0, d, 0, SeedLength);
var digest = DoubleSha256(d);
if (decodedInput[SeedLength] != digest[0])
{
throw new ChecksumException("Invalid checksum");
}
}
else if (decodedInput.Length != SeedLength)
{
throw new Exception($"Decoded seed must have byte length {SeedLength}");
}
return decodedInput;
}
public static string[] EncodeWordList(PgpWordList pgpWordList, byte[] seed)
{
var seedHash = DoubleSha256(seed);
var seedWithChecksum = new byte[seed.Length + 1];
Array.Copy(seed, seedWithChecksum, seed.Length);
seedWithChecksum[seedWithChecksum.Length - 1] = seedHash[0];
return pgpWordList.Encode(seedWithChecksum);
}
public static string[] EncodeWordList(PgpWordList pgpWordList, byte[] seed)
{
var seedHash = DoubleSha256(seed);
var seedWithChecksum = new byte[seed.Length + 1];
Array.Copy(seed, seedWithChecksum, seed.Length);
seedWithChecksum[seedWithChecksum.Length - 1] = seedHash[0];
return(pgpWordList.Encode(seedWithChecksum));
}
private static byte[] DecodeUserInput(string userInput, PgpWordList pgpWordList)
{
byte[] seed;
if (Hexadecimal.TryDecode(userInput, out seed))
return seed;
var splitInput = userInput.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
if (splitInput.Length == 1)
{
// Hex decoding failed, but it's not a multi-word mneumonic either.
// Assume the user intended hex.
throw new HexadecimalEncodingException();
}
return pgpWordList.Decode(splitInput);
}
private static byte[] DecodeUserInput(string userInput, PgpWordList pgpWordList)
{
byte[] seed;
if (Hexadecimal.TryDecode(userInput, out seed))
{
return(seed);
}
var splitInput = userInput.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
if (splitInput.Length == 1)
{
// Hex decoding failed, but it's not a multi-word mneumonic either.
// Assume the user intended hex.
throw new HexadecimalEncodingException();
}
return(pgpWordList.Decode(splitInput));
}
/// <summary>
/// Decodes user input as either the hexadecimal or PGP word list encoding
/// of a seed and validates the seed length.
/// </summary>
public static byte[] DecodeAndValidateUserInput(string userInput, PgpWordList pgpWordList)
{
if (userInput == null)
{
throw new ArgumentNullException(nameof(userInput));
}
if (pgpWordList == null)
{
throw new ArgumentNullException(nameof(pgpWordList));
}
var decodedInput = DecodeUserInput(userInput, pgpWordList);
if (decodedInput.Length != SeedLength)
{
throw new Exception($"Decoded seed must have byte length {SeedLength}");
}
return(decodedInput);
}
public static string[] EncodeWordList(PgpWordList pgpWordList, byte[] seed) => pgpWordList.Encode(seed);
public ConfirmSeedBackupDialog(StartupWizard wizard, CreateSeedDialog previousDialog,
byte[] seed, PgpWordList pgpWordlist)
: base(wizard)
{
_previousDialog = previousDialog;
_seed = seed;
_pgpWordList = pgpWordlist;
ConfirmSeedCommand = new DelegateCommand(ConfirmSeed);
BackCommand = new DelegateCommand(Back);
}
public CreateSeedDialog(StartupWizard wizard, PgpWordList pgpWordlist, ConnectionWizardDialog previousDialog) : base(wizard)
{
_previousDialog = previousDialog;
_pgpWordList = pgpWordlist;
BackCommand = new DelegateCommand(Back);
ContinueCommand = new DelegateCommand(Continue);
// false below and remove raise to require a selection.
ContinueCommand.Executable = true;
}
public ImportSeedDialog(StartupWizard wizard, PgpWordList pgpWordlist, ConnectionWizardDialog previousDialog) : base(wizard)
{
_previousDialog = previousDialog;
_pgpWordList = pgpWordlist;
BackCommand = new DelegateCommand(Back);
ContinueCommand = new DelegateCommand(Continue);
}