| public DoFinal ( byte output, int outOff ) : int | ||
| output | byte | |
| outOff | int | |
| return | int | |
internal SecureMimeDigitalCertificate(X509Certificate certificate)
{
Certificate = certificate;
var pubkey = certificate.GetPublicKey ();
if (pubkey is DsaKeyParameters)
PublicKeyAlgorithm = PublicKeyAlgorithm.Dsa;
else if (pubkey is RsaKeyParameters)
PublicKeyAlgorithm = PublicKeyAlgorithm.RsaGeneral;
else if (pubkey is ElGamalKeyParameters)
PublicKeyAlgorithm = PublicKeyAlgorithm.ElGamalGeneral;
else if (pubkey is ECKeyParameters)
PublicKeyAlgorithm = PublicKeyAlgorithm.EllipticCurve;
else if (pubkey is DHKeyParameters)
PublicKeyAlgorithm = PublicKeyAlgorithm.DiffieHellman;
var encoded = certificate.GetEncoded ();
var fingerprint = new StringBuilder ();
var sha1 = new Sha1Digest ();
var data = new byte[20];
sha1.BlockUpdate (encoded, 0, encoded.Length);
sha1.DoFinal (data, 0);
for (int i = 0; i < data.Length; i++)
fingerprint.Append (data[i].ToString ("X2"));
Fingerprint = fingerprint.ToString ();
}
private byte[] ComputeHash(byte[] input)
{
var sha = new Sha1Digest();
sha.BlockUpdate(input, 0, input.Length);
byte[] result = new byte[sha.GetDigestSize()];
sha.DoFinal(result, 0);
return result;
}
/// <summary>
/// Compute the hash of the input byte array and return the hashed value as a byte array.
/// </summary>
/// <param name="inputData">Input data</param>
/// <returns>SHA1 Hashed data.</returns>
byte[] IHashProvider.ComputeHash( byte[] inputData )
{
Sha1Digest digest = new Sha1Digest();
digest.BlockUpdate( inputData, 0, inputData.Length );
byte[] result = new byte[digest.GetDigestSize()];
digest.DoFinal( result, 0 );
return result;
}
static Asn1OctetString CreateDigestFromBytes(byte[] bytes)
{
var digest = new Sha1Digest();
digest.BlockUpdate(bytes, 0, bytes.Length);
var digestBytes = new byte[digest.GetDigestSize()];
digest.DoFinal(digestBytes, 0);
return new DerOctetString(digestBytes);
}
public static string Sha1(string input)
{
var data = System.Text.Encoding.UTF8.GetBytes(input);
Sha1Digest hash = new Sha1Digest();
hash.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[hash.GetDigestSize()];
hash.DoFinal(result, 0);
return Hex.ToHexString(result);
}
/**
*
* Calulates the keyIdentifier using a SHA1 hash over the BIT STRING
* from SubjectPublicKeyInfo as defined in RFC2459.
*
**/
public SubjectKeyIdentifier(
SubjectPublicKeyInfo spki)
{
IDigest digest = new Sha1Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
byte[] bytes = spki.PublicKeyData.GetBytes();
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
this.keyIdentifier = resBuf;
}
/**
*
* Calulates the keyidentifier using a SHA1 hash over the BIT STRING
* from SubjectPublicKeyInfo as defined in RFC2459.
*
* Example of making a AuthorityKeyIdentifier:
* <pre>
* SubjectPublicKeyInfo apki = new SubjectPublicKeyInfo((ASN1Sequence)new ASN1InputStream(
* publicKey.getEncoded()).readObject());
* AuthorityKeyIdentifier aki = new AuthorityKeyIdentifier(apki);
* </pre>
*
**/
public AuthorityKeyIdentifier(
SubjectPublicKeyInfo spki)
{
IDigest digest = new Sha1Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
byte[] bytes = spki.PublicKeyData.GetBytes();
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
this.keyidentifier = new DerOctetString(resBuf);
}
/// <summary>
/// Gets the fingerprint of the certificate.
/// </summary>
/// <remarks>
/// A fingerprint is a SHA-1 hash of the raw certificate data and is often used
/// as a unique identifier for a particular certificate in a certificate store.
/// </remarks>
/// <returns>The fingerprint.</returns>
/// <param name="certificate">The certificate.</param>
public static string GetFingerprint(this X509Certificate certificate)
{
var encoded = certificate.GetEncoded ();
var fingerprint = new StringBuilder ();
var sha1 = new Sha1Digest ();
var data = new byte[20];
sha1.BlockUpdate (encoded, 0, encoded.Length);
sha1.DoFinal (data, 0);
for (int i = 0; i < data.Length; i++)
fingerprint.Append (data[i].ToString ("x2"));
return fingerprint.ToString ();
}
/**
* create an AuthorityKeyIdentifier with the GeneralNames tag and
* the serial number provided as well.
*/
public AuthorityKeyIdentifier(
SubjectPublicKeyInfo spki,
GeneralNames name,
BigInteger serialNumber)
{
IDigest digest = new Sha1Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
byte[] bytes = spki.PublicKeyData.GetBytes();
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
this.keyidentifier = new DerOctetString(resBuf);
this.certissuer = name;
this.certserno = new DerInteger(serialNumber);
}
public static string CreateResponseKey(string requestKey)
{
var combined = requestKey + WebSocketResponseGuid;
#if !PORTABLE
var bytes = SHA1.Create().ComputeHash(Encoding.ASCII.GetBytes(combined));
#else
var bytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(combined);
IDigest hash = new Sha1Digest();
byte[] result = new byte[hash.GetDigestSize()];
hash.BlockUpdate(bytes, 0, bytes.Length);
hash.DoFinal(result, 0);
bytes = result;
//// Convert the message string to binary data.
//IBuffer buffUtf8Msg = CryptographicBuffer.ConvertStringToBinary(combined, BinaryStringEncoding.Utf8);
//// Create a HashAlgorithmProvider object.
//HashAlgorithmProvider objAlgProv = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Md5);
//// Demonstrate how to retrieve the name of the hashing algorithm.
//String strAlgNameUsed = objAlgProv.AlgorithmName;
//// Hash the message.
//IBuffer buffHash = objAlgProv.HashData(buffUtf8Msg);
//// Verify that the hash length equals the length specified for the algorithm.
//if (buffHash.Length != objAlgProv.HashLength)
//{
// throw new Exception("There was an error creating the hash");
//}
//// Convert the hash to a string (for display).
//String strHashBase64 = CryptographicBuffer.EncodeToBase64String(buffHash);
//byte[] bytes = new byte[buffHash.Length];
//CryptographicBuffer.CopyToByteArray(buffHash, out bytes);
#endif
return Convert.ToBase64String(bytes);
}
private static byte[] GetDigest(
SubjectPublicKeyInfo spki)
{
IDigest digest = new Sha1Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
byte[] bytes = spki.PublicKeyData.GetBytes();
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
return resBuf;
}
public override void PerformTest()
{
IDigest digest = new Sha1Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
string resStr;
//
// test 1
//
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec1.Equals(resStr))
{
Fail("failing standard vector test 1" + SimpleTest.NewLine
+ " expected: " + resVec1 + SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 2
//
byte[] bytes = Hex.Decode(testVec2);
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec2.Equals(resStr))
{
Fail("failing standard vector test 2" + SimpleTest.NewLine
+ " expected: " + resVec2 + SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 3
//
bytes = Hex.Decode(testVec3);
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec3.Equals(resStr))
{
Fail("failing standard vector test 3" + SimpleTest.NewLine
+ " expected: " + resVec3 + SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 4
//
bytes = Hex.Decode(testVec4);
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec4.Equals(resStr))
{
Fail("failing standard vector test 4" + SimpleTest.NewLine
+ " expected: " + resVec4 + SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 5
//
bytes = Hex.Decode(testVec4);
digest.BlockUpdate(bytes, 0, bytes.Length / 2);
// clone the IDigest
IDigest d = new Sha1Digest((Sha1Digest)digest);
digest.BlockUpdate(bytes, bytes.Length / 2, bytes.Length - bytes.Length / 2);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec4.Equals(resStr))
{
Fail("failing standard vector test 5" + SimpleTest.NewLine
+ " expected: " + resVec4 + SimpleTest.NewLine
+ " got : " + resStr);
}
d.BlockUpdate(bytes, bytes.Length / 2, bytes.Length - bytes.Length / 2);
d.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec4.Equals(resStr))
{
Fail("failing standard vector test 5" + SimpleTest.NewLine
+ " expected: " + resVec4 + SimpleTest.NewLine
+ " got : " + resStr);
}
}
/// <summary>
/// Calculate the restore code for an authenticator. This is taken from the last 10 bytes of a digest of the serial and secret key,
/// which is then specially encoded to alphanumerics.
/// </summary>
/// <returns>restore code for authenticator (always 10 chars)</returns>
private string BuildRestoreCode()
{
// return if not set
if (string.IsNullOrEmpty(Serial) == true || SecretKey == null)
{
return string.Empty;
}
// get byte array of serial
byte[] serialdata = Encoding.UTF8.GetBytes(Serial.ToUpper().Replace("-", string.Empty));
byte[] secretdata = SecretKey;
// combine serial data and secret data
byte[] combined = new byte[serialdata.Length + secretdata.Length];
Array.Copy(serialdata, 0, combined, 0, serialdata.Length);
Array.Copy(secretdata, 0, combined, serialdata.Length, secretdata.Length);
// create digest of combined data
IDigest digest = new Sha1Digest();
digest.BlockUpdate(combined, 0, combined.Length);
byte[] digestdata = new byte[digest.GetDigestSize()];
digest.DoFinal(digestdata, 0);
// take last 10 chars of hash and convert each byte to our encoded string that doesn't use I,L,O,S
StringBuilder code = new StringBuilder();
int startpos = digestdata.Length - 10;
for (int i = 0; i < 10; i++)
{
code.Append(ConvertRestoreCodeByteToChar(digestdata[startpos + i]));
}
return code.ToString();
}
private byte[] SignDsa(byte[] buffer, int length)
{
var signer = new DsaSigner();
signer.Init(true, new ParametersWithRandom(PrivateKeyFactory.CreateKey(PrivateKey), _secureRandom));
var sha1 = new Sha1Digest();
sha1.BlockUpdate(buffer, 0, length);
byte[] hash = new byte[sha1.GetDigestSize()];
sha1.DoFinal(hash, 0);
var signature = signer.GenerateSignature(hash);
byte[] res = new byte[41];
res[0] = PublicKey[0];
signature[0].ToByteArrayUnsigned().CopyTo(res, 1);
signature[1].ToByteArrayUnsigned().CopyTo(res, 21);
return res;
}
public static byte[] SHA1(byte[] data, int count)
{
var sha1 = new Sha1Digest();
sha1.BlockUpdate(data, 0, count);
byte[] rv = new byte[20];
sha1.DoFinal(rv, 0);
return rv;
}
private bool VerifyDsa(byte[] buffer, int length, byte[] signature)
{
int numberSize = 64 + PublicKey[0] * 8;
DsaPublicKeyParameters parameters = new DsaPublicKeyParameters(
new BigInteger(1, PublicKey, 21 + 2 * numberSize, numberSize),
new DsaParameters(
new BigInteger(1, PublicKey, 21, numberSize),
new BigInteger(1, PublicKey, 1, 20),
new BigInteger(1, PublicKey, 21 + numberSize, numberSize))
);
var dsa = new DsaSigner();
dsa.Init(false, parameters);
var sha1 = new Sha1Digest();
sha1.BlockUpdate(buffer, 0, length);
byte[] hash = new byte[sha1.GetDigestSize()];
sha1.DoFinal(hash, 0);
return dsa.VerifySignature(hash, new BigInteger(1, signature, 1, 20), new BigInteger(1, signature, 21, 20));
}
public override string hash(string pw)
{
Sha1Digest digest = new Sha1Digest();
// 8 byte random salt
byte[] salt = randomSalt(8);
// Generate the hash of the password + salt
byte[] password = Encoding.UTF8.GetBytes(pw);
digest.BlockUpdate(password, 0, password.Length);
digest.BlockUpdate(salt, 0, salt.Length);
int digestSize = digest.GetDigestSize();
byte[] hashData = new byte[digestSize];
digest.DoFinal(hashData, 0);
// Put the salt on the end of the hashed password + salt
byte[] result = new byte[hashData.Length + salt.Length];
hashData.CopyTo(result, 0);
salt.CopyTo(result, hashData.Length);
// Return in base 64
return "{SSHA}" + Convert.ToBase64String(result);
}
// signature
public static string CreateSignature(string email, string password, RsaKeyParameters key)
{
byte[] prefix = { 0x00 };
var keyStruct = KeyToStruct(key);
var toEncrypt = Encoding.UTF8.GetBytes(email + "\x00" + password);
var cipher = new OaepEncoding(new RsaEngine(), new Sha1Digest(), null);
cipher.Init(true, key);
var encrypted = cipher.ProcessBlock(toEncrypt, 0, toEncrypt.Length);
var digest = new Sha1Digest();
var hash = new byte[digest.GetByteLength()];
digest.BlockUpdate(keyStruct, 0, keyStruct.Length);
digest.DoFinal(hash, 0);
var hashExcerpt = hash.Take(4).ToArray();
return DataTypeUtils.UrlSafeBase64(DataTypeUtils.CombineBytes(prefix, hashExcerpt, encrypted));
}
static void Main(string[] args)
{
var assembly = Assembly.GetExecutingAssembly();
var title = (AssemblyTitleAttribute)Attribute.GetCustomAttribute(assembly, typeof(AssemblyTitleAttribute));
Console.WriteLine("{0} version {1}", title.Title, assembly.GetName().Version);
var copyright = (AssemblyCopyrightAttribute)Attribute.GetCustomAttribute(assembly, typeof(AssemblyCopyrightAttribute));
Console.WriteLine(copyright.Copyright);
Console.WriteLine("More information can be found at https://Jexus.codeplex.com");
Console.WriteLine();
var baseAddress = args.Length > 0 ? args[0] : "https://*****:*****@"Remote services must be run as root on Linux.");
return;
}
if (!File.Exists("jws"))
{
Console.WriteLine(@"Remote services must be running in Jexus installation folder.");
return;
}
var loc = baseAddress.LastIndexOf(':');
var port = "443";
if (loc != -1)
{
port = baseAddress.Substring(loc + 1);
}
string dirname = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
string path = Path.Combine(dirname, ".mono", "httplistener");
if (false == Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
string target_cert = Path.Combine(path, string.Format("{0}.cer", port));
if (File.Exists(target_cert))
{
Console.WriteLine("Use {0}", target_cert);
}
else
{
Console.WriteLine("Generating a self-signed certificate for Jexus Manager");
// Generate certificate
string defaultIssuer = "CN=jexus.lextudio.com";
string defaultSubject = "CN=jexus.lextudio.com";
byte[] sn = Guid.NewGuid().ToByteArray();
string subject = defaultSubject;
string issuer = defaultIssuer;
DateTime notBefore = DateTime.Now;
DateTime notAfter = new DateTime(643445675990000000); // 12/31/2039 23:59:59Z
RSA issuerKey = new RSACryptoServiceProvider(2048);
RSA subjectKey = null;
bool selfSigned = true;
string hashName = "SHA1";
CspParameters subjectParams = new CspParameters();
CspParameters issuerParams = new CspParameters();
BasicConstraintsExtension bce = new BasicConstraintsExtension
{
PathLenConstraint = BasicConstraintsExtension.NoPathLengthConstraint,
CertificateAuthority = true
};
ExtendedKeyUsageExtension eku = new ExtendedKeyUsageExtension();
eku.KeyPurpose.Add("1.3.6.1.5.5.7.3.1");
SubjectAltNameExtension alt = null;
string p12file = Path.Combine(path, "temp.pfx");
string p12pwd = "test";
// serial number MUST be positive
if ((sn[0] & 0x80) == 0x80)
sn[0] -= 0x80;
if (selfSigned)
{
if (subject != defaultSubject)
{
issuer = subject;
issuerKey = subjectKey;
}
else
{
subject = issuer;
subjectKey = issuerKey;
}
}
if (subject == null)
throw new Exception("Missing Subject Name");
X509CertificateBuilder cb = new X509CertificateBuilder(3);
cb.SerialNumber = sn;
cb.IssuerName = issuer;
cb.NotBefore = notBefore;
cb.NotAfter = notAfter;
cb.SubjectName = subject;
cb.SubjectPublicKey = subjectKey;
// extensions
if (bce != null)
cb.Extensions.Add(bce);
if (eku != null)
cb.Extensions.Add(eku);
if (alt != null)
cb.Extensions.Add(alt);
IDigest digest = new Sha1Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
var spki = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(DotNetUtilities.GetRsaPublicKey(issuerKey));
byte[] bytes = spki.PublicKeyData.GetBytes();
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
cb.Extensions.Add(new SubjectKeyIdentifierExtension { Identifier = resBuf });
cb.Extensions.Add(new AuthorityKeyIdentifierExtension { Identifier = resBuf });
// signature
cb.Hash = hashName;
byte[] rawcert = cb.Sign(issuerKey);
PKCS12 p12 = new PKCS12();
p12.Password = p12pwd;
ArrayList list = new ArrayList();
// we use a fixed array to avoid endianess issues
// (in case some tools requires the ID to be 1).
list.Add(new byte[4] { 1, 0, 0, 0 });
Hashtable attributes = new Hashtable(1);
attributes.Add(PKCS9.localKeyId, list);
p12.AddCertificate(new Mono.Security.X509.X509Certificate(rawcert), attributes);
p12.AddPkcs8ShroudedKeyBag(subjectKey, attributes);
p12.SaveToFile(p12file);
var x509 = new System.Security.Cryptography.X509Certificates.X509Certificate2(p12file, p12pwd, System.Security.Cryptography.X509Certificates.X509KeyStorageFlags.Exportable);
// Install certificate
string target_pvk = Path.Combine(path, string.Format("{0}.pvk", port));
using (Stream cer = File.OpenWrite(target_cert))
{
byte[] raw = x509.RawData;
cer.Write(raw, 0, raw.Length);
}
PrivateKey pvk = new PrivateKey();
pvk.RSA = subjectKey;
pvk.Save(target_pvk);
}
}
JexusServer.Credentials = args.Length > 2 ? args[1] + "|" + args[2] : "jexus|lextudio.com";
JexusServer.Timeout = args.Length > 3 ? double.Parse(args[3]) : 30D;
using (WebApp.Start<Startup>(url: baseAddress))
{
Console.WriteLine("Remote services have started at {0}.", baseAddress);
Console.WriteLine("Credentials is {0}", JexusServer.Credentials);
Console.WriteLine("Press Enter to quit.");
Console.ReadLine();
}
}
/**
* which Generates the p and g values from the given parameters,
* returning the DsaParameters object.
* <p>
* Note: can take a while...</p>
*/
public DsaParameters GenerateParameters()
{
byte[] seed = new byte[20];
byte[] part1 = new byte[20];
byte[] part2 = new byte[20];
byte[] u = new byte[20];
Sha1Digest sha1 = new Sha1Digest();
int n = (size - 1) / 160;
byte[] w = new byte[size / 8];
BigInteger q = null, p = null, g = null;
int counter = 0;
bool primesFound = false;
while (!primesFound)
{
do
{
random.NextBytes(seed);
sha1.BlockUpdate(seed, 0, seed.Length);
sha1.DoFinal(part1, 0);
Array.Copy(seed, 0, part2, 0, seed.Length);
Add(part2, seed, 1);
sha1.BlockUpdate(part2, 0, part2.Length);
sha1.DoFinal(part2, 0);
for (int i = 0; i != u.Length; i++)
{
u[i] = (byte)(part1[i] ^ part2[i]);
}
u[0] |= (byte)0x80;
u[19] |= (byte)0x01;
q = new BigInteger(1, u);
}
while (!q.IsProbablePrime(certainty));
counter = 0;
int offset = 2;
while (counter < 4096)
{
for (int k = 0; k < n; k++)
{
Add(part1, seed, offset + k);
sha1.BlockUpdate(part1, 0, part1.Length);
sha1.DoFinal(part1, 0);
Array.Copy(part1, 0, w, w.Length - (k + 1) * part1.Length, part1.Length);
}
Add(part1, seed, offset + n);
sha1.BlockUpdate(part1, 0, part1.Length);
sha1.DoFinal(part1, 0);
Array.Copy(part1, part1.Length - ((w.Length - (n) * part1.Length)), w, 0, w.Length - n * part1.Length);
w[0] |= (byte)0x80;
BigInteger x = new BigInteger(1, w);
BigInteger c = x.Mod(q.ShiftLeft(1));
p = x.Subtract(c.Subtract(BigInteger.One));
if (p.TestBit(size - 1))
{
if (p.IsProbablePrime(certainty))
{
primesFound = true;
break;
}
}
counter += 1;
offset += n + 1;
}
}
//
// calculate the generator g
//
BigInteger pMinusOneOverQ = p.Subtract(BigInteger.One).Divide(q);
for (;;)
{
BigInteger h = new BigInteger(size, random);
if (h.CompareTo(BigInteger.One) <= 0 || h.CompareTo(p.Subtract(BigInteger.One)) >= 0)
{
continue;
}
g = h.ModPow(pMinusOneOverQ, p);
if (g.CompareTo(BigInteger.One) <= 0)
{
continue;
}
break;
}
return new DsaParameters(p, q, g, new DsaValidationParameters(seed, counter));
}
public override string hash(string pw)
{
Sha1Digest digest = new Sha1Digest();
byte[] password = Encoding.UTF8.GetBytes(pw);
digest.BlockUpdate(password, 0, password.Length);
int digestSize = digest.GetDigestSize();
byte[] hashData = new byte[digestSize];
digest.DoFinal(hashData, 0);
return "{SHA}" + Convert.ToBase64String(hashData);
}
public static byte[] Digest(byte[] data, String algo)
{
if (algo == null)
{
throw new ArgumentNullException("El algoritmo de huella digital no puede ser nulo");
}
if (data == null)
{
throw new ArgumentNullException("Los datos no pueden ser nulos");
}
switch (algo)
{
/**
* ALGORITMOS DE HASING
*/
case AOSignConstants.SIGN_ALGORITHM_SHA1:
{
Sha1Digest dig = new Sha1Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
case AOSignConstants.SIGN_ALGORITHM_SHA256:
{
Sha256Digest dig = new Sha256Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
case AOSignConstants.SIGN_ALGORITHM_SHA384:
{
Sha384Digest dig = new Sha384Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
case AOSignConstants.SIGN_ALGORITHM_SHA512:
{
Sha512Digest dig = new Sha512Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
case AOSignConstants.SIGN_ALGORITHM_RIPEMD160:
{
RipeMD160Digest dig = new RipeMD160Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
case AOSignConstants.SIGN_ALGORITHM_MD5:
{
MD5Digest dig = new MD5Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
case AOSignConstants.SIGN_ALGORITHM_MD2:
{
MD2Digest dig = new MD2Digest();
dig.BlockUpdate(data, 0, data.Length);
byte[] result = new byte[dig.GetDigestSize()];
dig.DoFinal(result, 0);
return result;
}
default:
// You can use the default case.
throw new ArgumentNullException("El algoritmo no es reconocido");
}
throw new ArgumentNullException("Algoritmo de hash no soportado: " + algo);
}
/// <summary>
/// Hashes each component of the key hash with it's length first.
/// </summary>
/// <param name="size">The size.</param>
/// <param name="components">The components.</param>
/// <returns></returns>
public static byte[] HashKeyLengthPrefix(int size, params byte[][] components)
{
var sha1 = new Sha1Digest();
foreach (var data in components)
{
byte[] length = GetBytes(data.Length);
sha1.BlockUpdate(length, 0, length.Length);
sha1.BlockUpdate(data, 0, data.Length);
}
var hash = new byte[sha1.GetDigestSize()];
sha1.DoFinal(hash, 0);
sha1.Reset();
var outBytes = new byte[size];
Array.Copy(hash, 0, outBytes, 0, outBytes.Length);
return outBytes;
}
