public static MiniKeyPair CreateDeterministic(string seed)
{
// flow:
// 1. take SHA256 of seed to yield 32 bytes
// 2. base58-encode those 32 bytes as though it were a regular private key. now we have 51 characters.
// 3. remove all instances of the digit 1. (likely source of typos)
// 4. take 29 characters starting with position 4
// (this is to skip those first characters of a base58check-encoded private key with low entropy)
// 5. test to see if it matches the typo check. while it does not, increment and try again.
UTF8Encoding utf8 = new UTF8Encoding(false);
byte[] sha256ofseed = Util.ComputeSha256(seed);
string asbase58 = new KeyPair(sha256ofseed).PrivateKeyBase58.Replace("1","");
string keytotry = "S" + asbase58.Substring(4, 29);
char[] chars = keytotry.ToCharArray();
char[] charstest = (keytotry + "?").ToCharArray();
while (Util.ComputeSha256(utf8.GetBytes(charstest))[0] != 0) {
// As long as key doesn't pass typo check, increment it.
for (int i = chars.Length - 1; i >= 0; i--) {
char c = chars[i];
if (c == '9') {
charstest[i] = chars[i] = 'A';
break;
} else if (c == 'H') {
charstest[i] = chars[i] = 'J';
break;
} else if (c == 'N') {
charstest[i] = chars[i] = 'P';
break;
} else if (c == 'Z') {
charstest[i] = chars[i] = 'a';
break;
} else if (c == 'k') {
charstest[i] = chars[i] = 'm';
break;
} else if (c == 'z') {
charstest[i] = chars[i] = '2';
// No break - let loop increment prior character.
} else {
charstest[i] = chars[i] = ++c;
break;
}
}
}
return new MiniKeyPair(new String(chars));
}
public static MiniKeyPair CreateDeterministic(string seed)
{
// flow:
// 1. take SHA256 of seed to yield 32 bytes
// 2. base58-encode those 32 bytes as though it were a regular private key. now we have 51 characters.
// 3. remove all instances of the digit 1. (likely source of typos)
// 4. take 29 characters starting with position 4
// (this is to skip those first characters of a base58check-encoded private key with low entropy)
// 5. test to see if it matches the typo check. while it does not, increment and try again.
UTF8Encoding utf8 = new UTF8Encoding(false);
byte[] sha256ofseed = Util.ComputeSha256(seed);
string asbase58 = new KeyPair(sha256ofseed).PrivateKeyBase58.Replace("1", "");
string keytotry = "S" + asbase58.Substring(4, 29);
char[] chars = keytotry.ToCharArray();
char[] charstest = (keytotry + "?").ToCharArray();
while (Util.ComputeSha256(utf8.GetBytes(charstest))[0] != 0)
{
// As long as key doesn't pass typo check, increment it.
for (int i = chars.Length - 1; i >= 0; i--)
{
char c = chars[i];
if (c == '9')
{
charstest[i] = chars[i] = 'A';
break;
}
else if (c == 'H')
{
charstest[i] = chars[i] = 'J';
break;
}
else if (c == 'N')
{
charstest[i] = chars[i] = 'P';
break;
}
else if (c == 'Z')
{
charstest[i] = chars[i] = 'a';
break;
}
else if (c == 'k')
{
charstest[i] = chars[i] = 'm';
break;
}
else if (c == 'z')
{
charstest[i] = chars[i] = '2';
// No break - let loop increment prior character.
}
else
{
charstest[i] = chars[i] = ++c;
break;
}
}
}
return(new MiniKeyPair(new String(chars)));
}
/// <summary>
/// flow:
/// 1. take SHA256 of seed to yield 32 bytes
/// 2. base58-encode those 32 bytes as though it were a regular private key. now we have 51 characters.
/// 3. remove all instances of the digit 1. (likely source of typos)
/// 4. take 29 characters starting with position 4
/// (this is to skip those first characters of a base58check-encoded private key with low entropy)
/// 5. test to see if it matches the typo check. while it does not, increment and try again.
/// </summary>
/// <returns></returns>
public static MiniKeyPair CreateDeterministic(string seed, byte addressType = 0)
{
UTF8Encoding utf8 = new UTF8Encoding(false);
byte[] sha256ofseed = Util.ComputeSha256(seed);
string asbase58 = new KeyPair(sha256ofseed).PrivateKeyBase58.Replace("1","");
string keytotry = "S" + asbase58.Substring(4, 29);
char[] chars = keytotry.ToCharArray();
char[] charstest = (keytotry + "?").ToCharArray();
while (Util.ComputeSha256(utf8.GetBytes(charstest))[0] != 0) {
// As long as key doesn't pass typo check, increment it.
for (int i = chars.Length - 1; i >= 0; i--) {
char c = chars[i];
if (c == '9') {
charstest[i] = chars[i] = 'A';
break;
} else if (c == 'H') {
charstest[i] = chars[i] = 'J';
break;
} else if (c == 'N') {
charstest[i] = chars[i] = 'P';
break;
} else if (c == 'Z') {
charstest[i] = chars[i] = 'a';
break;
} else if (c == 'k') {
charstest[i] = chars[i] = 'm';
break;
} else if (c == 'z') {
charstest[i] = chars[i] = '2';
// No break - let loop increment prior character.
} else {
charstest[i] = chars[i] = ++c;
break;
}
}
}
return new MiniKeyPair(new String(chars), addressType);
}
