public static string[] ValidateActivationkey(ICDESecrets mySecrets, string activationKeyString, Guid deviceId, List <TheLicense> allLicenses, out List <TheLicenseActivationInformation> activatedLicenses, out DateTimeOffset expirationDate) { expirationDate = DateTimeOffset.MinValue; activatedLicenses = null; string signingKey = mySecrets.GetActivationKeySignatureKey(); var normalizedKey = activationKeyString.Trim().Replace("-", "").ToUpper().Replace('O', '0').Replace('U', 'V').Replace('I', 'J').Replace('L', 'J'); if (normalizedKey.Length != 36) { return(new string[] { "Invalid activation key: not the proper length", String.Format("{0}", activationKeyString) }); } byte[] activationKey = TheActivationUtils.Base32Decode(normalizedKey); if (activationKey == null || activationKey.Length != 23 || activationKey[22] != 15) { return(new string[] { "Invalid activation key: failed to decode.", String.Format("{0}", activationKeyString) }); } string activationKeyHash = Convert.ToBase64String((SHA1.Create().ComputeHash(activationKey))); byte[] signature = new byte[8]; activationKey.Take(8).ToArray().CopyTo(signature, 0); int expirationInDays = (activationKey[8] + (activationKey[9] << 8)); if (expirationInDays < 0) { return(new string[] { "Invalid activation key: invalid expiration date.", String.Format("{0}. Expiration: {1}", activationKeyString, expirationInDays) }); } expirationDate = new DateTime(2016, 1, 1, 0, 0, 0, DateTimeKind.Utc) + new TimeSpan(expirationInDays, 0, 0, 0); if (expirationDate < DateTime.Now) { return(new string[] { "Invalid activation key: key expired.", String.Format("{0}. Expiration: {1}", activationKeyString, expirationDate.ToString()) }); } ActivationFlags flags = (ActivationFlags)activationKey[10]; if ((flags & ActivationFlags.RequireOnline) != 0) { return(new string[] { "Invalid activation key: online activation required but not supported in this cdeEngine version.", String.Format("{0}", activationKeyString) }); } byte licenseCount = activationKey[12]; if (licenseCount > MaxLicensesInActivationKey) { return(new string[] { "Invalid activation key: too many licenses specified.", String.Format("{0}. License Count: {1}", activationKeyString, licenseCount) }); } if (licenseCount == 0) { return(new string[] { "Invalid activation key: no licenses specified.", String.Format("{0}. License Count: {1}", activationKeyString, 0) }); } if (licenseCount > allLicenses.Count) { return(new string[] { "Unable to apply activation key: some licenses not available on the system.", String.Format("{0}. License Count in key: {1}. Total valid licenses on system: {2}", activationKeyString, licenseCount, allLicenses.Count) }); } byte[] parameters = new byte[TheActivationUtils.MaxLicenseParameters]; int paramOffset = 13; for (int j = 0; j < TheActivationUtils.MaxLicenseParameters; j++) { parameters[j] = activationKey[paramOffset]; paramOffset++; } int[] candidateIndices = new int[licenseCount]; TheLicense[] candidates = new TheLicense[licenseCount]; bool done = false; do { bool validCombination = true; for (int i = 0; i < licenseCount; i++) { candidates[i] = allLicenses[candidateIndices[i]]; if (i > 0 && String.CompareOrdinal(candidates[i].LicenseId.ToString(), candidates[i - 1].LicenseId.ToString()) <= 0) { validCombination = false; break; } } if (validCombination && TheActivationUtils.GenerateLicenseSignature(deviceId, signingKey, (uint)expirationInDays, candidates.ToArray(), parameters, flags, out byte[] candidateSignature))
/// <summary> /// Retrieves information from a token generated using the GetActivationRequestKey method. /// Typically used by a cdeEngine applicationId owner to generate activation keys. /// </summary> /// <param name="activationRequestKey">The token obtained from GetActivationRequestKey.</param> /// <param name="creationTime">The time when the token was created (local machine time, truncated to 10 minute boundary)</param> /// <param name="skuId">Application owner-defined SKU identifier, that is typically used to identify the set of licenses to included in the activation key.</param> /// <param name="deviceId">NodeId of the node where the activationRequestKey was generated. The activation key is typically bound to this node id.</param> /// <returns></returns> public static bool ParseActivationRequestKey(string activationRequestKey, out DateTime creationTime, out uint skuId, out Guid deviceId) { creationTime = DateTime.MinValue; skuId = 0; deviceId = Guid.Empty; var normalizedKey = activationRequestKey.Replace("-", "").ToUpper().Replace('O', '0').Replace('U', 'V').Replace('I', 'J').Replace('L', 'J'); if (normalizedKey.Length != 36) { return(false); } byte[] activationRequestKeyArray = TheActivationUtils.Base32Decode(normalizedKey); if (activationRequestKeyArray.Length != 23) { return(false); } byte checksum = 0; int j = 0; byte[] tGu = new byte[16]; uint tenMinuteIntervalsSinceUnixEpoch = 0; for (int i = 0; i < tGu.Length; i++) { if (i < 3) { tenMinuteIntervalsSinceUnixEpoch += (uint)(activationRequestKeyArray[j] ^ checksum) << (i * 8); checksum += activationRequestKeyArray[j]; j++; } else if (i < 5) { skuId += (uint)(activationRequestKeyArray[j] ^ checksum) << ((i - 3) * 8); checksum += activationRequestKeyArray[j]; j++; } tGu[i] = (byte)(activationRequestKeyArray[j] ^ checksum); checksum += activationRequestKeyArray[j]; j++; } if (activationRequestKeyArray[j] != (checksum & 0xff) || activationRequestKeyArray[j + 1] != 15) { skuId = 0; return(false); } //if (activationRequestKeyArray[j+1] != (byte) ((checksum >> 8) + activationRequestKeyArray[0])) //{ // return Guid.Empty; //} //if (activationRequestKeyArray[j + 2] != (byte)(((activationRequestKeyArray[0]) | 0x02) & 0x03)) //{ // return Guid.Empty; //} creationTime = new DateTime(1970, 1, 1) + new TimeSpan(0, (int)(tenMinuteIntervalsSinceUnixEpoch * 10), 0); deviceId = new Guid(tGu); return(true); }