[System.Security.SecuritySafeCritical] // auto-generated
#endif
public RNGCryptoServiceProvider()
{
m_cspHandle = CapiNative.AcquireCsp(null,
CapiNative.ProviderNames.MicrosoftEnhanced,
CapiNative.ProviderType.RsaFull,
CapiNative.CryptAcquireContextFlags.VerifyContext);
}
// SafeCritical - we're not exposing out anything that we want to prevent untrusted code from getting at
public CapiHashAlgorithm(string provider,
CapiNative.ProviderType providerType,
CapiNative.AlgorithmId algorithm)
{
Contract.Requires(!String.IsNullOrEmpty(provider));
Contract.Requires((CapiNative.AlgorithmClass)((uint)algorithm & (uint)CapiNative.AlgorithmClass.Hash) == CapiNative.AlgorithmClass.Hash);
Contract.Ensures(m_cspHandle != null && !m_cspHandle.IsInvalid && !m_cspHandle.IsClosed);
Contract.Ensures(m_hashHandle != null && !m_hashHandle.IsInvalid && !m_hashHandle.IsClosed);
m_algorithmId = algorithm;
m_cspHandle = CapiNative.AcquireCsp(null,
provider,
providerType,
CapiNative.CryptAcquireContextFlags.VerifyContext,
true);
Initialize();
}
public AesCryptoServiceProvider()
{
string providerName = "Microsoft Enhanced RSA and AES Cryptographic Provider";
if ((Environment.OSVersion.Version.Major == 5) && (Environment.OSVersion.Version.Minor == 1))
{
providerName = "Microsoft Enhanced RSA and AES Cryptographic Provider (Prototype)";
}
this.m_cspHandle = CapiNative.AcquireCsp(null, providerName, CapiNative.ProviderType.RsaAes, CapiNative.CryptAcquireContextFlags.None | CapiNative.CryptAcquireContextFlags.VerifyContext, true);
base.FeedbackSizeValue = 8;
int defaultKeySize = 0;
if (FindSupportedKeySizes(this.m_cspHandle, out defaultKeySize).Length == 0)
{
throw new PlatformNotSupportedException(System.SR.GetString("Cryptography_PlatformNotSupported"));
}
base.KeySizeValue = defaultKeySize;
}
public AesCryptoServiceProvider()
{
Contract.Ensures(m_cspHandle != null && !m_cspHandle.IsInvalid && !m_cspHandle.IsClosed);
// On Windows XP the AES CSP has the prototype name, but on newer operating systems it has the
// standard name
string providerName = CapiNative.ProviderNames.MicrosoftEnhancedRsaAes;
if (Environment.OSVersion.Version.Major == 5 && Environment.OSVersion.Version.Minor == 1)
{
providerName = CapiNative.ProviderNames.MicrosoftEnhancedRsaAesPrototype;
}
m_cspHandle = CapiNative.AcquireCsp(null,
providerName,
CapiNative.ProviderType.RsaAes,
CapiNative.CryptAcquireContextFlags.VerifyContext,
true);
// CAPI will not allow feedback sizes greater than 64 bits
FeedbackSizeValue = 8;
// Get the different AES key sizes supported by this platform, raising an error if there are no
// supported key sizes.
int defaultKeySize = 0;
KeySizes[] keySizes = FindSupportedKeySizes(m_cspHandle, out defaultKeySize);
if (keySizes.Length != 0)
{
Debug.Assert(defaultKeySize > 0, "defaultKeySize > 0");
KeySizeValue = defaultKeySize;
}
else
{
throw new PlatformNotSupportedException(SR.GetString(SR.Cryptography_PlatformNotSupported));
}
}
public CapiHashAlgorithm(string provider, CapiNative.ProviderType providerType, CapiNative.AlgorithmId algorithm)
{
this.m_algorithmId = algorithm;
this.m_cspHandle = CapiNative.AcquireCsp(null, provider, providerType, CapiNative.CryptAcquireContextFlags.None | CapiNative.CryptAcquireContextFlags.VerifyContext, true);
this.Initialize();
}
