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149 lines
4.3 KiB
149 lines
4.3 KiB
// MsKeyBlob.cpp -- MicroSoft Key Blob class implementation
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 1999. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#include "NoWarning.h"
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#include "ForceLib.h"
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#include <windows.h>
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#include <scuOsExc.h>
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#include "MsKeyBlob.h"
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using namespace scu;
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/////////////////////////// LOCAL/HELPER /////////////////////////////////
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/////////////////////////// PUBLIC /////////////////////////////////
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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ALG_ID
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MsKeyBlob::AlgId() const
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{
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return reinterpret_cast<ValueType const *>(m_aapBlob.data())->aiKeyAlg;
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}
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SecureArray<MsKeyBlob::KeyBlobType>
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MsKeyBlob::AsAlignedBlob() const
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{
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return SecureArray<BlobElemType>(m_aapBlob.data(),m_cLength);
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}
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MsKeyBlob::ValueType const *
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MsKeyBlob::Data() const
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{
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return reinterpret_cast<ValueType const *>(m_aapBlob.data());
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}
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MsKeyBlob::SizeType
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MsKeyBlob::Length() const
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{
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return m_cLength;
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}
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// Predicates
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// Static Variables
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/////////////////////////// PROTECTED /////////////////////////////////
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// C'tors/D'tors
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MsKeyBlob::MsKeyBlob(KeyBlobType kbt,
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ALG_ID ai,
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SizeType cReserve)
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: m_aapBlob(0),
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m_cLength(0),
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m_cMaxSize(0)
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{
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Setup(sizeof HeaderElementType + cReserve);
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ValueType bhTemplate =
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{
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kbt,
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CUR_BLOB_VERSION,
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0, // must be zero per MS
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ai
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};
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Append(reinterpret_cast<BlobElemType const *>(&bhTemplate),
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sizeof bhTemplate);
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}
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MsKeyBlob::MsKeyBlob(BYTE const *pbData,
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DWORD dwDataLength)
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: m_aapBlob(0),
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m_cLength(0),
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m_cMaxSize(0)
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{
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Setup(dwDataLength);
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ValueType const *pvt = reinterpret_cast<ValueType const *>(pbData);
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if (!((PUBLICKEYBLOB == pvt->bType) ||
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(PRIVATEKEYBLOB == pvt->bType) ||
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(SIMPLEBLOB == pvt->bType)))
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throw scu::OsException(NTE_BAD_TYPE);
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if (CUR_BLOB_VERSION != pvt->bVersion)
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throw scu::OsException(NTE_BAD_TYPE);
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if (0 != pvt->reserved)
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throw scu::OsException(NTE_BAD_TYPE);
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Append(pbData, dwDataLength);
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}
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MsKeyBlob::~MsKeyBlob()
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{}
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// Operators
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// Operations
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void
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MsKeyBlob::Append(BlobElemType const *pvt,
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SizeType cLength)
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{
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if ((m_cLength + cLength) > m_cMaxSize)
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{
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m_aapBlob.append(cLength, 0);
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m_cMaxSize += cLength;
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}
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memcpy(m_aapBlob.data() + m_cLength, pvt, cLength);
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m_cLength += cLength;
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}
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// Access
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// Predicates
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// Static Variables
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/////////////////////////// PRIVATE /////////////////////////////////
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// C'tors/D'tors
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// Operators
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// Operations
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SecureArray<MsKeyBlob::BlobElemType>
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MsKeyBlob::AllocBlob(MsKeyBlob::SizeType cInitialMaxLength)
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{
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return SecureArray<BlobElemType>(cInitialMaxLength);
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}
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void
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MsKeyBlob::Setup(MsKeyBlob::SizeType cMaxLength)
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{
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m_aapBlob = AllocBlob(cMaxLength);
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m_cLength = 0;
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m_cMaxSize = cMaxLength;
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}
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// Access
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// Predicates
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// Static Variables
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