public byte[] CryptDeriveKey(string algname, string alghashname, int keySize, byte[] rgbIV)
{
if (keySize < 0)
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidKeySize"));
}
int algidHash = X509Utils.OidToAlgId(alghashname);
if (algidHash == 0)
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_PasswordDerivedBytes_InvalidAlgorithm"));
}
int algid = X509Utils.OidToAlgId(algname);
if (algid == 0)
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_PasswordDerivedBytes_InvalidAlgorithm"));
}
if (rgbIV == null)
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_PasswordDerivedBytes_InvalidIV"));
}
byte[] o = null;
DeriveKey(this.ProvHandle, algid, algidHash, this._password, this._password.Length, keySize << 0x10, rgbIV, rgbIV.Length, JitHelpers.GetObjectHandleOnStack <byte[]>(ref o));
return(o);
}
public byte[] SignHash(byte[] rgbHash, string str)
{
if (rgbHash == null)
{
throw new ArgumentNullException("rgbHash");
}
if (this.PublicOnly)
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_CSP_NoPrivateKey"));
}
int calgHash = X509Utils.OidToAlgId(str);
if (rgbHash.Length != (this._sha1.HashSize / 8))
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidHashSize", new object[] { "SHA1", this._sha1.HashSize / 8 }));
}
this.GetKeyPair();
if (!this.CspKeyContainerInfo.RandomlyGenerated)
{
KeyContainerPermission permission = new KeyContainerPermission(KeyContainerPermissionFlags.NoFlags);
KeyContainerPermissionAccessEntry accessEntry = new KeyContainerPermissionAccessEntry(this._parameters, KeyContainerPermissionFlags.Sign);
permission.AccessEntries.Add(accessEntry);
permission.Demand();
}
return(Utils.SignValue(this._safeKeyHandle, this._parameters.KeyNumber, 0x2200, calgHash, rgbHash));
}
public bool VerifyHash(byte[] rgbHash, string str, byte[] rgbSignature)
{
if (rgbHash == null)
{
throw new ArgumentNullException("rgbHash");
}
if (rgbSignature == null)
{
throw new ArgumentNullException("rgbSignature");
}
this.GetKeyPair();
int calgHash = X509Utils.OidToAlgId(str, OidGroup.HashAlgorithm);
return this.VerifyHash(rgbHash, calgHash, rgbSignature);
}
public bool VerifyHash(byte[] rgbHash, string str, byte[] rgbSignature)
{
if (rgbHash == null)
{
throw new ArgumentNullException("rgbHash");
}
if (rgbSignature == null)
{
throw new ArgumentNullException("rgbSignature");
}
int calgHash = X509Utils.OidToAlgId(str);
if (rgbHash.Length != (this._sha1.HashSize / 8))
{
throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidHashSize", new object[] { "SHA1", this._sha1.HashSize / 8 }));
}
this.GetKeyPair();
return(Utils.VerifySign(this._safeKeyHandle, 0x2200, calgHash, rgbHash, rgbSignature));
}
