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// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
// <OWNER>Microsoft</OWNER>
//
//
// ICspAsymmetricAlgorithm.cs
//
namespace System.Security.Cryptography {
using System.Security.AccessControl;
using System.Security.Permissions;
[Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public enum KeyNumber {
Exchange = 1,
Signature = 2
}
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class CspKeyContainerInfo {
private CspParameters m_parameters;
private bool m_randomKeyContainer;
private CspKeyContainerInfo () {}
[System.Security.SecurityCritical] // auto-generated
internal CspKeyContainerInfo (CspParameters parameters, bool randomKeyContainer) {
if (!CompatibilitySwitches.IsAppEarlierThanWindowsPhone8) {
KeyContainerPermission kp = new KeyContainerPermission(KeyContainerPermissionFlags.NoFlags);
KeyContainerPermissionAccessEntry entry = new KeyContainerPermissionAccessEntry(parameters, KeyContainerPermissionFlags.Open);
kp.AccessEntries.Add(entry);
kp.Demand();
}
m_parameters = new CspParameters(parameters);
if (m_parameters.KeyNumber == -1) {
if (m_parameters.ProviderType == Constants.PROV_RSA_FULL || m_parameters.ProviderType == Constants.PROV_RSA_AES)
m_parameters.KeyNumber = Constants.AT_KEYEXCHANGE;
else if (m_parameters.ProviderType == Constants.PROV_DSS_DH)
m_parameters.KeyNumber = Constants.AT_SIGNATURE;
}
m_randomKeyContainer = randomKeyContainer;
}
[System.Security.SecuritySafeCritical] // auto-generated
public CspKeyContainerInfo (CspParameters parameters) : this (parameters, false) {}
public bool MachineKeyStore {
get {
return (m_parameters.Flags & CspProviderFlags.UseMachineKeyStore) == CspProviderFlags.UseMachineKeyStore ? true : false;
}
}
public string ProviderName {
get {
return m_parameters.ProviderName;
}
}
public int ProviderType {
get {
return m_parameters.ProviderType;
}
}
public string KeyContainerName {
get {
return m_parameters.KeyContainerName;
}
}
public string UniqueKeyContainerName {
[System.Security.SecuritySafeCritical] // auto-generated
get {
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
int hr = Utils._OpenCSP(m_parameters, Constants.CRYPT_SILENT, ref safeProvHandle);
if (hr != Constants.S_OK)
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NotFound"));
string uniqueContainerName = (string) Utils._GetProviderParameter(safeProvHandle, m_parameters.KeyNumber, Constants.CLR_UNIQUE_CONTAINER);
safeProvHandle.Dispose();
return uniqueContainerName;
}
}
public KeyNumber KeyNumber {
get {
return (KeyNumber) m_parameters.KeyNumber;
}
}
public bool Exportable {
[System.Security.SecuritySafeCritical] // auto-generated
get {
// Assume hardware keys are not exportable.
if (this.HardwareDevice)
return false;
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
int hr = Utils._OpenCSP(m_parameters, Constants.CRYPT_SILENT, ref safeProvHandle);
if (hr != Constants.S_OK)
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NotFound"));
byte[] isExportable = (byte[]) Utils._GetProviderParameter(safeProvHandle, m_parameters.KeyNumber, Constants.CLR_EXPORTABLE);
safeProvHandle.Dispose();
return (isExportable[0] == 1);
}
}
public bool HardwareDevice {
[System.Security.SecuritySafeCritical] // auto-generated
get {
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
CspParameters parameters = new CspParameters(m_parameters);
parameters.KeyContainerName = null;
parameters.Flags = (parameters.Flags & CspProviderFlags.UseMachineKeyStore) != 0 ? CspProviderFlags.UseMachineKeyStore : 0;
uint flags = Constants.CRYPT_VERIFYCONTEXT;
int hr = Utils._OpenCSP(parameters, flags, ref safeProvHandle);
if (hr != Constants.S_OK)
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NotFound"));
byte[] isHardwareDevice = (byte[]) Utils._GetProviderParameter(safeProvHandle, parameters.KeyNumber, Constants.CLR_HARDWARE);
safeProvHandle.Dispose();
return (isHardwareDevice[0] == 1);
}
}
public bool Removable {
[System.Security.SecuritySafeCritical] // auto-generated
get {
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
CspParameters parameters = new CspParameters(m_parameters);
parameters.KeyContainerName = null;
parameters.Flags = (parameters.Flags & CspProviderFlags.UseMachineKeyStore) != 0 ? CspProviderFlags.UseMachineKeyStore : 0;
uint flags = Constants.CRYPT_VERIFYCONTEXT;
int hr = Utils._OpenCSP(parameters, flags, ref safeProvHandle);
if (hr != Constants.S_OK)
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NotFound"));
byte[] isRemovable = (byte[]) Utils._GetProviderParameter(safeProvHandle, parameters.KeyNumber, Constants.CLR_REMOVABLE);
safeProvHandle.Dispose();
return (isRemovable[0] == 1);
}
}
public bool Accessible {
[System.Security.SecuritySafeCritical] // auto-generated
get {
// This method will pop-up a UI for hardware keys.
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
int hr = Utils._OpenCSP(m_parameters, Constants.CRYPT_SILENT, ref safeProvHandle);
if (hr != Constants.S_OK)
return false;
byte[] isAccessible = (byte[]) Utils._GetProviderParameter(safeProvHandle, m_parameters.KeyNumber, Constants.CLR_ACCESSIBLE);
safeProvHandle.Dispose();
return (isAccessible[0] == 1);
}
}
public bool Protected {
[System.Security.SecuritySafeCritical] // auto-generated
get {
// Assume hardware keys are protected.
if (this.HardwareDevice == true)
return true;
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
int hr = Utils._OpenCSP(m_parameters, Constants.CRYPT_SILENT, ref safeProvHandle);
if (hr != Constants.S_OK)
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NotFound"));
byte[] isProtected = (byte[]) Utils._GetProviderParameter(safeProvHandle, m_parameters.KeyNumber, Constants.CLR_PROTECTED);
safeProvHandle.Dispose();
return (isProtected[0] == 1);
}
}
#if FEATURE_MACL
public CryptoKeySecurity CryptoKeySecurity {
[System.Security.SecuritySafeCritical] // auto-generated
get {
KeyContainerPermission kp = new KeyContainerPermission(KeyContainerPermissionFlags.NoFlags);
KeyContainerPermissionAccessEntry entry = new KeyContainerPermissionAccessEntry(m_parameters,
KeyContainerPermissionFlags.ChangeAcl |
KeyContainerPermissionFlags.ViewAcl);
kp.AccessEntries.Add(entry);
kp.Demand();
SafeProvHandle safeProvHandle = SafeProvHandle.InvalidHandle;
int hr = Utils._OpenCSP(m_parameters, Constants.CRYPT_SILENT, ref safeProvHandle);
if (hr != Constants.S_OK)
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NotFound"));
using (safeProvHandle) {
return Utils.GetKeySetSecurityInfo(safeProvHandle, AccessControlSections.All);
}
}
}
#endif //FEATURE_MACL
public bool RandomlyGenerated {
get {
return m_randomKeyContainer;
}
}
}
[System.Runtime.InteropServices.ComVisible(true)]
public interface ICspAsymmetricAlgorithm {
CspKeyContainerInfo CspKeyContainerInfo { get; }
#if FEATURE_LEGACYNETCFCRYPTO
[SecurityCritical]
#endif
byte[] ExportCspBlob (bool includePrivateParameters);
#if FEATURE_LEGACYNETCFCRYPTO
[SecurityCritical]
#endif
void ImportCspBlob (byte[] rawData);
}
}
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