本文整理汇总了C#中CRYPTPROTECT_PROMPTSTRUCT类的典型用法代码示例。如果您正苦于以下问题：C# CRYPTPROTECT_PROMPTSTRUCT类的具体用法？C# CRYPTPROTECT_PROMPTSTRUCT怎么用？C# CRYPTPROTECT_PROMPTSTRUCT使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
CRYPTPROTECT_PROMPTSTRUCT类属于命名空间，在下文中一共展示了CRYPTPROTECT_PROMPTSTRUCT类的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C#代码示例。
示例1: CryptUnprotectData
bool CryptUnprotectData(ref DATA_BLOB pCipherText,
ref string pszDescription,
ref DATA_BLOB pEntropy,
IntPtr pReserved,
ref CRYPTPROTECT_PROMPTSTRUCT pPrompt,
int dwFlags,
ref DATA_BLOB pPlainText);
开发者ID:philippthiele，项目名称:ChromePasswordDump，代码行数:7，代码来源:DPAPI.cs
示例2: InitPromptstruct
private static void InitPromptstruct(ref CRYPTPROTECT_PROMPTSTRUCT ps)
{
ps.cbSize = Marshal.SizeOf(typeof(CRYPTPROTECT_PROMPTSTRUCT));
ps.dwPromptFlags = 0;
ps.hwndApp = IntPtr.Zero;
ps.szPrompt = null;
}
开发者ID:jpespartero，项目名称:WorldWind，代码行数:7，代码来源:DataProtection.cs
示例3: CryptUnprotectData
private static extern bool CryptUnprotectData(
ref DATA_BLOB pDataIn,
String szDataDescr,
ref DATA_BLOB pOptionalEntropy,
IntPtr pvReserved,
ref CRYPTPROTECT_PROMPTSTRUCT
pPromptStruct,
int dwFlags,
ref DATA_BLOB pDataOut);
开发者ID:Nullstr1ng，项目名称:MultiRDPClient.NET，代码行数:9，代码来源:DataProtector.cs
示例4: Decrypt
public static byte[] Decrypt(byte[] cipherTextBytes, byte[] entropyBytes, out string description)
{
DATA_BLOB pPlainText = new DATA_BLOB();
DATA_BLOB dataBlob1 = new DATA_BLOB();
DATA_BLOB dataBlob2 = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT cryptprotectPromptstruct = new CRYPTPROTECT_PROMPTSTRUCT();
DataProtection.InitPrompt(ref cryptprotectPromptstruct);
description = string.Empty;
try
{
try
{
DataProtection.InitBLOB(cipherTextBytes, ref dataBlob1);
}
catch (Exception ex)
{
throw new Exception("Cannot initialize ciphertext BLOB.", ex);
}
try
{
DataProtection.InitBLOB(entropyBytes, ref dataBlob2);
}
catch (Exception ex)
{
throw new Exception("Cannot initialize entropy BLOB.", ex);
}
int dwFlags = 1;
if (!Advent.Common.Interop.NativeMethods.CryptUnprotectData(ref dataBlob1, ref description, ref dataBlob2, IntPtr.Zero, ref cryptprotectPromptstruct, dwFlags, ref pPlainText))
throw new Exception("CryptUnprotectData failed.", (Exception)new Win32Exception(Marshal.GetLastWin32Error()));
byte[] destination = new byte[pPlainText.cbData];
Marshal.Copy(pPlainText.pbData, destination, 0, pPlainText.cbData);
return destination;
}
catch (Exception ex)
{
throw new Exception("Unable to decrypt data.", ex);
}
finally
{
if (pPlainText.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(pPlainText.pbData);
if (dataBlob1.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(dataBlob1.pbData);
if (dataBlob2.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(dataBlob2.pbData);
}
}
开发者ID:kingpin2k，项目名称:MCS，代码行数:47，代码来源:DataProtection.cs
示例5: Encrypt
public static string Encrypt(string unencrypted)
{
CryptProtectFlags flags = CryptProtectFlags.CRYPTPROTECT_UI_FORBIDDEN;
DATA_BLOB unencryptedBlob = ConvertData(Encoding.Unicode.GetBytes(unencrypted));
DATA_BLOB encryptedBlob = new DATA_BLOB();
DATA_BLOB dataOption = new DATA_BLOB();
try
{
CRYPTPROTECT_PROMPTSTRUCT prompt = new CRYPTPROTECT_PROMPTSTRUCT();
if (!CryptProtectData(ref unencryptedBlob, "psw", ref dataOption, IntPtr.Zero, ref prompt, flags, ref encryptedBlob))
{
int errCode = Marshal.GetLastWin32Error();
throw new AmazonClientException("CryptProtectData failed. Error Code: " + errCode);
}
byte[] outData = new byte[encryptedBlob.cbData];
Marshal.Copy(encryptedBlob.pbData, outData, 0, outData.Length);
StringBuilder encrypted = new StringBuilder();
for (int i = 0; i <= outData.Length - 1; i++)
{
encrypted.Append(
Convert.ToString(outData[i], 16).PadLeft(2, '0').ToUpper(CultureInfo.InvariantCulture));
}
string encryptedPassword = encrypted.ToString().ToUpper(CultureInfo.InvariantCulture);
return encryptedPassword;
}
finally
{
if (unencryptedBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(unencryptedBlob.pbData);
if (encryptedBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(encryptedBlob.pbData);
}
}
开发者ID:aws，项目名称:aws-sdk-net，代码行数:38，代码来源:UserCrypto.cs
示例6: Decrypt
public static string Decrypt(string encrypted)
{
List<Byte> dataIn = new List<byte>();
for (int i = 0; i < encrypted.Length; i = i + 2)
{
byte data = Convert.ToByte(encrypted.Substring(i, 2), 16);
dataIn.Add(data);
}
CryptProtectFlags flags = CryptProtectFlags.CRYPTPROTECT_UI_FORBIDDEN;
DATA_BLOB encryptedBlob = ConvertData(dataIn.ToArray());
DATA_BLOB unencryptedBlob = new DATA_BLOB();
DATA_BLOB dataOption = new DATA_BLOB();
try
{
CRYPTPROTECT_PROMPTSTRUCT prompt = new CRYPTPROTECT_PROMPTSTRUCT();
if (!CryptUnprotectData(ref encryptedBlob, "psw", ref dataOption, IntPtr.Zero, ref prompt, flags, ref unencryptedBlob))
{
int errCode = Marshal.GetLastWin32Error();
throw new AmazonClientException("CryptProtectData failed. Error Code: " + errCode);
}
byte[] outData = new byte[unencryptedBlob.cbData];
Marshal.Copy(unencryptedBlob.pbData, outData, 0, outData.Length);
string unencrypted = Encoding.Unicode.GetString(outData);
return unencrypted;
}
finally
{
if (encryptedBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(encryptedBlob.pbData);
if (unencryptedBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(unencryptedBlob.pbData);
}
}
开发者ID:aws，项目名称:aws-sdk-net，代码行数:38，代码来源:UserCrypto.cs
示例7: decrypt
public static byte[] decrypt(byte[] cipherTextBytes)
{
try
{
DATA_BLOB plainTextBlob = new DATA_BLOB();
DATA_BLOB cipherTextBlob = new DATA_BLOB();
DATA_BLOB entropyBlob = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT prompt = new CRYPTPROTECT_PROMPTSTRUCT();
string description = String.Empty;
InitPrompt(ref prompt);
try
{
InitBLOB(cipherTextBytes, ref cipherTextBlob);
}
catch { }
int flags = 0x1;
bool success = CryptUnprotectData(ref cipherTextBlob,
ref description,
ref entropyBlob,
IntPtr.Zero,
ref prompt,
flags,
ref plainTextBlob);
if (success)
{
byte[] plainTextBytes = new byte[plainTextBlob.cbData];
Marshal.Copy(plainTextBlob.pbData,
plainTextBytes,
0,
plainTextBlob.cbData);
return plainTextBytes;
}
}
catch { }
return null;
}
开发者ID:jimbojetset，项目名称:GetChromePasswords，代码行数:36，代码来源:DPAPI.cs
示例8: Unprotect
public static byte[] Unprotect (byte[] encryptedData, byte[] optionalEntropy, DataProtectionScope scope)
{
byte[] decdata = null;
int hr = 0;
DATA_BLOB cipher = new DATA_BLOB ();
DATA_BLOB entropy = new DATA_BLOB ();
DATA_BLOB data = new DATA_BLOB ();
try {
CRYPTPROTECT_PROMPTSTRUCT prompt = new CRYPTPROTECT_PROMPTSTRUCT (0);
cipher.Alloc (encryptedData);
entropy.Alloc (optionalEntropy);
// note: the scope/flags has already been check by the public caller
uint flags = CRYPTPROTECT_UI_FORBIDDEN;
if (scope == DataProtectionScope.LocalMachine)
flags |= CRYPTPROTECT_LOCAL_MACHINE;
if (CryptUnprotectData (ref cipher, null, ref entropy, IntPtr.Zero,
ref prompt, flags, ref data)) {
// copy decrypted data back to managed codde
decdata = data.ToBytes ();
} else {
hr = Marshal.GetLastWin32Error ();
}
}
catch (Exception ex) {
string msg = Locale.GetText ("Error protecting data.");
throw new CryptographicException (msg, ex);
}
finally {
cipher.Free ();
data.Free ();
entropy.Free ();
}
if ((decdata == null) || (hr != 0)) {
throw new CryptographicException (hr);
}
return decdata;
}
开发者ID:Profit0004，项目名称:mono，代码行数:41，代码来源:NativeDapiProtection.cs
示例9: Decrypt
/// <summary>
/// Decrypt byte data
/// </summary>
/// <param name="cipherText">Data to be decoded</param>
/// <param name="optionalEntropy">Additional entropy, recommended for machine-specific case</param>
/// <returns>Returns a byte array with the encoded data</returns>
internal byte[] Decrypt(byte[] cipherText, byte[] optionalEntropy)
{
bool retVal = false;
DATA_BLOB plainTextBlob = new DATA_BLOB();
DATA_BLOB cipherBlob = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT prompt = new CRYPTPROTECT_PROMPTSTRUCT();
InitPromptstruct(ref prompt);
try
{
try
{
int cipherTextSize = cipherText.Length;
cipherBlob.pbData = Marshal.AllocHGlobal(cipherTextSize);
if(IntPtr.Zero == cipherBlob.pbData)
{
throw new Exception("Unable to allocate cipherText buffer.");
}
cipherBlob.cbData = cipherTextSize;
Marshal.Copy(cipherText, 0, cipherBlob.pbData,
cipherBlob.cbData);
}
catch(Exception ex)
{
throw new Exception("Exception marshalling data. " +
ex.Message);
}
DATA_BLOB entropyBlob = new DATA_BLOB();
int dwFlags;
if(Store.USE_MACHINE_STORE == store)
{
//Using the machine store, should be providing entropy.
dwFlags =
CRYPTPROTECT_LOCAL_MACHINE|CRYPTPROTECT_UI_FORBIDDEN;
//Check to see if the entropy is null
if(null == optionalEntropy)
{
//Allocate something
optionalEntropy = new byte[0];
}
try
{
int bytesSize = optionalEntropy.Length;
entropyBlob.pbData = Marshal.AllocHGlobal(bytesSize);
if(IntPtr.Zero == entropyBlob.pbData)
{
throw new Exception("Unable to allocate entropy buffer.");
}
entropyBlob.cbData = bytesSize;
Marshal.Copy(optionalEntropy, 0, entropyBlob.pbData,
bytesSize);
}
catch(Exception ex)
{
throw new Exception("Exception marshalling entropy data. " +
ex.Message);
}
}
else
{
//Using the user store
dwFlags = CRYPTPROTECT_UI_FORBIDDEN;
}
retVal = CryptUnprotectData(ref cipherBlob, null, ref
entropyBlob,
IntPtr.Zero, ref prompt, dwFlags,
ref plainTextBlob);
if(false == retVal)
{
throw new Exception("Decryption failed. " +
Win32Message.GetMessage(Marshal.GetLastWin32Error()));
}
//Free the blob and entropy.
if(IntPtr.Zero != cipherBlob.pbData)
{
Marshal.FreeHGlobal(cipherBlob.pbData);
}
if(IntPtr.Zero != entropyBlob.pbData)
{
Marshal.FreeHGlobal(entropyBlob.pbData);
}
}
catch(Exception ex)
{
throw new Exception("Exception decrypting. " + ex.Message);
}
byte[] plainText = new byte[plainTextBlob.cbData];
Marshal.Copy(plainTextBlob.pbData, plainText, 0, plainTextBlob.cbData);
Marshal.FreeHGlobal(plainTextBlob.pbData);
return plainText;
}
开发者ID:paladin74，项目名称:Dapple，代码行数:98，代码来源:DataProtection.cs
示例10: CryptProtectData
private static extern bool CryptProtectData(ref DATA_BLOB pPlainText, string szDescription, ref DATA_BLOB pEntropy, IntPtr pReserved,
ref CRYPTPROTECT_PROMPTSTRUCT pPrompt, int dwFlags, ref DATA_BLOB pCipherText);
开发者ID:Xiryl，项目名称:ChromeRec，代码行数:2，代码来源:DPAPI.cs
示例11: Encrypt
public byte[] Encrypt(byte[] plainText, byte[] optionalEntropy)
{
DATA_BLOB pDataIn = new DATA_BLOB();
DATA_BLOB pDataOut = new DATA_BLOB();
DATA_BLOB pOptionalEntropy = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT ps = new CRYPTPROTECT_PROMPTSTRUCT();
this.InitPromptstruct(ref ps);
try
{
int num;
try
{
int length = plainText.Length;
pDataIn.pbData = Marshal.AllocHGlobal(length);
if (IntPtr.Zero == pDataIn.pbData)
{
throw new Exception("Unable to allocate plaintext buffer.");
}
pDataIn.cbData = length;
Marshal.Copy(plainText, 0, pDataIn.pbData, length);
}
catch (Exception exception)
{
throw new Exception("Exception marshalling data. " + exception.Message);
}
if (Store.Machine == this.store)
{
num = 5;
if (optionalEntropy == null)
{
optionalEntropy = new byte[0];
}
try
{
int num3 = optionalEntropy.Length;
pOptionalEntropy.pbData = Marshal.AllocHGlobal(optionalEntropy.Length);
if (IntPtr.Zero == pOptionalEntropy.pbData)
{
throw new Exception("Unable to allocate entropy data buffer.");
}
Marshal.Copy(optionalEntropy, 0, pOptionalEntropy.pbData, num3);
pOptionalEntropy.cbData = num3;
goto Label_010F;
}
catch (Exception exception2)
{
throw new Exception("Exception entropy marshalling data. " + exception2.Message);
}
}
num = 1;
Label_010F:
if (!CryptProtectData(ref pDataIn, "", ref pOptionalEntropy, IntPtr.Zero, ref ps, num, ref pDataOut))
{
throw new Exception("Encryption failed. " + GetErrorMessage(Marshal.GetLastWin32Error()));
}
}
catch (Exception exception3)
{
throw new Exception("Exception encrypting. " + exception3.Message);
}
byte[] destination = new byte[pDataOut.cbData];
Marshal.Copy(pDataOut.pbData, destination, 0, pDataOut.cbData);
return destination;
}
开发者ID:jokingzhou，项目名称:AnJi-DevZoneGIS，代码行数:64，代码来源:DataProtector.cs
示例12: InitPrompt
private static void InitPrompt(ref CRYPTPROTECT_PROMPTSTRUCT ps)
{
ps.cbSize = Marshal.SizeOf(typeof(CRYPTPROTECT_PROMPTSTRUCT));
ps.dwPromptFlags = 0;
ps.hwndApp = DataProtection.NullPtr;
ps.szPrompt = (string)null;
}
开发者ID:kingpin2k，项目名称:MCS，代码行数:7，代码来源:DataProtection.cs
示例13: Encrypt
public static byte[] Encrypt(DataProtection.KeyType keyType, byte[] plainTextBytes, byte[] entropyBytes, string description)
{
if (plainTextBytes == null)
plainTextBytes = new byte[0];
if (entropyBytes == null)
entropyBytes = new byte[0];
if (description == null)
description = string.Empty;
DATA_BLOB dataBlob1 = new DATA_BLOB();
DATA_BLOB pCipherText = new DATA_BLOB();
DATA_BLOB dataBlob2 = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT cryptprotectPromptstruct = new CRYPTPROTECT_PROMPTSTRUCT();
DataProtection.InitPrompt(ref cryptprotectPromptstruct);
try
{
try
{
DataProtection.InitBLOB(plainTextBytes, ref dataBlob1);
}
catch (Exception ex)
{
throw new Exception("Cannot initialize plaintext BLOB.", ex);
}
try
{
DataProtection.InitBLOB(entropyBytes, ref dataBlob2);
}
catch (Exception ex)
{
throw new Exception("Cannot initialize entropy BLOB.", ex);
}
int dwFlags = 1;
if (keyType == DataProtection.KeyType.MachineKey)
dwFlags |= 4;
if (!Advent.Common.Interop.NativeMethods.CryptProtectData(ref dataBlob1, description, ref dataBlob2, IntPtr.Zero, ref cryptprotectPromptstruct, dwFlags, ref pCipherText))
throw new Exception("CryptProtectData failed.", (Exception)new Win32Exception(Marshal.GetLastWin32Error()));
byte[] destination = new byte[pCipherText.cbData];
Marshal.Copy(pCipherText.pbData, destination, 0, pCipherText.cbData);
return destination;
}
catch (Exception ex)
{
throw new Exception("DPAPI was unable to encrypt data.", ex);
}
finally
{
if (dataBlob1.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(dataBlob1.pbData);
if (pCipherText.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(pCipherText.pbData);
if (dataBlob2.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(dataBlob2.pbData);
}
}
开发者ID:kingpin2k，项目名称:MCS，代码行数:54，代码来源:DataProtection.cs
示例14: InitPrompt
private static void InitPrompt(ref CRYPTPROTECT_PROMPTSTRUCT ps)
{
ps.cbSize = Marshal.SizeOf(
typeof(CRYPTPROTECT_PROMPTSTRUCT));
ps.dwPromptFlags = 0;
ps.hwndApp = ((IntPtr)((int)(0)));
ps.szPrompt = null;
}
开发者ID:jimbojetset，项目名称:GetChromePasswords，代码行数:8，代码来源:DPAPI.cs
示例15: InitPrompt
/// <summary>
/// Initializes empty prompt structure.
/// </summary>
/// <param name="ps">
/// Prompt parameter (which we do not actually need).
/// </param>
private static void InitPrompt(ref CRYPTPROTECT_PROMPTSTRUCT ps)
{
ps.cbSize = Marshal.SizeOf(ps);
ps.dwPromptFlags= 0;
ps.hwndApp = NullPtr;
ps.szPrompt = null;
}
开发者ID:trendSWM，项目名称:rdesktopce_rdp5，代码行数:13，代码来源:dpapi.cs
示例16: Decrypt
public byte[] Decrypt(byte[] cipherText, byte[] optionalEntropy)
{
DATA_BLOB pDataOut = new DATA_BLOB();
DATA_BLOB pDataIn = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT ps = new CRYPTPROTECT_PROMPTSTRUCT();
this.InitPromptstruct(ref ps);
try
{
int num2;
try
{
int length = cipherText.Length;
pDataIn.pbData = Marshal.AllocHGlobal(length);
if (IntPtr.Zero == pDataIn.pbData)
{
throw new Exception("Unable to allocate cipherText buffer.");
}
pDataIn.cbData = length;
Marshal.Copy(cipherText, 0, pDataIn.pbData, pDataIn.cbData);
}
catch (Exception exception)
{
throw new Exception("Exception marshalling data. " + exception.Message);
}
DATA_BLOB pOptionalEntropy = new DATA_BLOB();
if (Store.Machine == this.store)
{
num2 = 5;
if (optionalEntropy == null)
{
optionalEntropy = new byte[0];
}
try
{
int cb = optionalEntropy.Length;
pOptionalEntropy.pbData = Marshal.AllocHGlobal(cb);
if (IntPtr.Zero == pOptionalEntropy.pbData)
{
throw new Exception("Unable to allocate entropy buffer.");
}
pOptionalEntropy.cbData = cb;
Marshal.Copy(optionalEntropy, 0, pOptionalEntropy.pbData, cb);
goto Label_0113;
}
catch (Exception exception2)
{
throw new Exception("Exception entropy marshalling data. " + exception2.Message);
}
}
num2 = 1;
Label_0113:
if (!CryptUnprotectData(ref pDataIn, null, ref pOptionalEntropy, IntPtr.Zero, ref ps, num2, ref pDataOut))
{
throw new Exception("Decryption failed. " + GetErrorMessage(Marshal.GetLastWin32Error()));
}
if (IntPtr.Zero != pDataIn.pbData)
{
Marshal.FreeHGlobal(pDataIn.pbData);
}
if (IntPtr.Zero != pOptionalEntropy.pbData)
{
Marshal.FreeHGlobal(pOptionalEntropy.pbData);
}
}
catch (Exception exception3)
{
throw new Exception("Exception decrypting. " + exception3.Message);
}
byte[] destination = new byte[pDataOut.cbData];
Marshal.Copy(pDataOut.pbData, destination, 0, pDataOut.cbData);
return destination;
}
开发者ID:jokingzhou，项目名称:AnJi-DevZoneGIS，代码行数:72，代码来源:DataProtector.cs
示例17: Encrypt
public static byte[] Encrypt(KeyType keyType, byte[] plainTextBytes, byte[] entropyBytes, string description)
{
// Make sure that parameters are valid.
if (plainTextBytes == null) plainTextBytes = new byte[0];
if (entropyBytes == null) entropyBytes = new byte[0];
if (description == null) description = String.Empty;
// Create BLOBs to hold data.
DATA_BLOB plainTextBlob = new DATA_BLOB();
DATA_BLOB cipherTextBlob = new DATA_BLOB();
DATA_BLOB entropyBlob = new DATA_BLOB();
// We only need prompt structure because it is a required
// parameter.
CRYPTPROTECT_PROMPTSTRUCT prompt =
new CRYPTPROTECT_PROMPTSTRUCT();
InitPrompt(ref prompt);
try
{
// Convert plaintext bytes into a BLOB structure.
try
{
InitBLOB(plainTextBytes, ref plainTextBlob);
}
catch (Exception ex)
{
throw new Exception(
"Cannot initialize plaintext BLOB.", ex);
}
// Convert entropy bytes into a BLOB structure.
try
{
InitBLOB(entropyBytes, ref entropyBlob);
}
catch (Exception ex)
{
throw new Exception(
"Cannot initialize entropy BLOB.", ex);
}
// Disable any types of UI.
int flags = CRYPTPROTECT_UI_FORBIDDEN;
// When using machine-specific key, set up machine flag.
if (keyType == KeyType.MachineKey)
flags |= CRYPTPROTECT_LOCAL_MACHINE;
// Call DPAPI to encrypt data.
bool success = CryptProtectData(ref plainTextBlob,
description,
ref entropyBlob,
IntPtr.Zero,
ref prompt,
flags,
ref cipherTextBlob);
// Check the result.
if (!success)
{
// If operation failed, retrieve last Win32 error.
int errCode = Marshal.GetLastWin32Error();
// Win32Exception will contain error message corresponding
// to the Windows error code.
throw new Exception(
"CryptProtectData failed.", new Win32Exception(errCode));
}
// Allocate memory to hold ciphertext.
byte[] cipherTextBytes = new byte[cipherTextBlob.cbData];
// Copy ciphertext from the BLOB to a byte array.
Marshal.Copy(cipherTextBlob.pbData,
cipherTextBytes,
0,
cipherTextBlob.cbData);
// Return the result.
return cipherTextBytes;
}
catch (Exception ex)
{
throw new Exception("DPAPI was unable to encrypt data.", ex);
}
// Free all memory allocated for BLOBs.
finally
{
if (plainTextBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(plainTextBlob.pbData);
if (cipherTextBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(cipherTextBlob.pbData);
if (entropyBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(entropyBlob.pbData);
}
}
开发者ID:Xiryl，项目名称:ChromeRec，代码行数:98，代码来源:DPAPI.cs
示例18: Encrypt
public byte[] Encrypt(byte[] plainText, byte[] optionalEntropy)
{
bool retVal = false;
DATA_BLOB plainTextBlob = new DATA_BLOB();
DATA_BLOB cipherTextBlob = new DATA_BLOB();
DATA_BLOB entropyBlob = new DATA_BLOB();
CRYPTPROTECT_PROMPTSTRUCT prompt = new CRYPTPROTECT_PROMPTSTRUCT();
InitPromptstruct(ref prompt);
int dwFlags;
try
{
try
{
int bytesSize = plainText.Length;
plainTextBlob.pbData = Marshal.AllocHGlobal(bytesSize);
if (IntPtr.Zero == plainTextBlob.pbData)
{
throw new Exception("Unable to allocate plaintext buffer.");
}
plainTextBlob.cbData = bytesSize;
Marshal.Copy(plainText, 0, plainTextBlob.pbData, bytesSize);
}
catch (Exception ex)
{
throw new Exception("Exception marshalling data. " + ex.Message);
}
if (Store.Machine == store)
{
//Using the machine store, should be providing entropy.
dwFlags = CRYPTPROTECT_LOCAL_MACHINE | CRYPTPROTECT_UI_FORBIDDEN;
//Check to see if the entropy is null
if (null == optionalEntropy)
{
//Allocate something
optionalEntropy = new byte[0];
}
try
{
int bytesSize = optionalEntropy.Length;
entropyBlob.pbData = Marshal.AllocHGlobal(optionalEntropy.Length);
if (IntPtr.Zero == entropyBlob.pbData)
{
throw new Exception("Unable to allocate entropy data buffer.");
}
Marshal.Copy(optionalEntropy, 0, entropyBlob.pbData, bytesSize);
entropyBlob.cbData = bytesSize;
}
catch (Exception ex)
{
throw new Exception("Exception entropy marshalling data. " + ex.Message);
}
}
else
{
//Using the user store
dwFlags = CRYPTPROTECT_UI_FORBIDDEN;
}
retVal = CryptProtectData(ref plainTextBlob, "", ref entropyBlob,
IntPtr.Zero, ref prompt, dwFlags, ref cipherTextBlob);
if (false == retVal)
{
throw new Exception("Encryption failed. " + GetErrorMessage(Marshal.GetLastWin32Error()));
}
}
catch (Exception ex)
{
throw new Exception("Exception encrypting. " + ex.Message);
}
byte[] cipherText = new byte[cipherTextBlob.cbData];
Marshal.Copy(cipherTextBlob.pbData, cipherText, 0, cipherTextBlob.cbData);
return cipherText;
}
开发者ID:javithalion，项目名称:NCache，代码行数:76，代码来源:Protector.cs
示例19: Decrypt
public static byte[] Decrypt(byte[] cipherTextBytes, byte[] entropyBytes, out string description)
{
// Create BLOBs to hold data.
DATA_BLOB plainTextBlob = new DATA_BLOB();
DATA_BLOB cipherTextBlob = new DATA_BLOB();
DATA_BLOB entropyBlob = new DATA_BLOB();
// We only need prompt structure because it is a required
// parameter.
CRYPTPROTECT_PROMPTSTRUCT prompt =
new CRYPTPROTECT_PROMPTSTRUCT();
InitPrompt(ref prompt);
// Initialize description string.
description = String.Empty;
try
{
// Convert ciphertext bytes into a BLOB structure.
try
{
InitBLOB(cipherTextBytes, ref cipherTextBlob);
}
catch (Exception ex)
{
throw new Exception(
"Cannot initialize ciphertext BLOB.", ex);
}
// Convert entropy bytes into a BLOB structure.
try
{
InitBLOB(entropyBytes, ref entropyBlob);
}
catch (Exception ex)
{
throw new Exception(
"Cannot initialize entropy BLOB.", ex);
}
// Disable any types of UI. CryptUnprotectData does not
// mention CRYPTPROTECT_LOCAL_MACHINE flag in the list of
// supported flags so we will not set it up.
int flags = CRYPTPROTECT_UI_FORBIDDEN;
// Call DPAPI to decrypt data.
bool success = CryptUnprotectData(ref cipherTextBlob,
ref description,
ref entropyBlob,
IntPtr.Zero,
ref prompt,
flags,
ref plainTextBlob);
// Check the result.
if (!success)
{
// If operation failed, retrieve last Win32 error.
int errCode = Marshal.GetLastWin32Error();
// Win32Exception will contain error message corresponding
// to the Windows error code.
throw new Exception(
"CryptUnprotectData failed.", new Win32Exception(errCode));
}
// Allocate memory to hold plaintext.
byte[] plainTextBytes = new byte[plainTextBlob.cbData];
// Copy ciphertext from the BLOB to a byte array.
Marshal.Copy(plainTextBlob.pbData,
plainTextBytes,
0,
plainTextBlob.cbData);
// Return the result.
return plainTextBytes;
}
catch (Exception ex)
{
throw new Exception("DPAPI was unable to decrypt data.", ex);
}
// Free all memory allocated for BLOBs.
finally
{
if (plainTextBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(plainTextBlob.pbData);
if (cipherTextBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(cipherTextBlob.pbData);
if (entropyBlob.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(entropyBlob.pbData);
}
}
开发者ID:Xiryl，项目名称:ChromeRec，代码行数:95，代码来源:DPAPI.cs
示例20: CryptProtectData
public static extern bool CryptProtectData(ref CRYPTOAPI_BLOB pDataIn, string szDataDescr,
ref CRYPTOAPI_BLOB pOptionalEntropy, IntPtr pvReserved,
ref CRYPTPROTECT_PROMPTSTRUCT pPromptStruct, uint dwFlags,
ref CRYPTOAPI_BLOB pDataOut);
开发者ID:bmadarasz，项目名称:ndihelpdesk，代码行数:4，代码来源:Cryptography.cs
注：本文中的CRYPTPROTECT_PROMPTSTRUCT类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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