Source code of Windows XP (NT5)
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271 lines
7.9 KiB

/* context.h */
#include <windows.h>
#ifndef DSSCSP_CONTEXT_H
#define DSSCSP_CONTEXT_H
#ifdef CSP_USE_MD5
#include "md5.h"
#endif
#ifdef CSP_USE_SHA1
#include "sha.h"
#endif
// definition for disabling encryption in France
#define CRYPT_DISABLE_CRYPT 0x1
/*********************************/
/* Definitions */
/*********************************/
#define KEY_MAGIC 0xBADF
/* State definitions */
#define KEY_INIT 0x0001
#define MAX_BLOCKLEN 8
// types of key storage
#define PROTECTED_STORAGE_KEYS 1
#define PROTECTION_API_KEYS 2
#define HASH_MAGIC 0xBADE
/* State Flags */
#define HASH_INIT 0x0001
#define HASH_DATA 0x0002
#define HASH_FINISH 0x0004
#define MAX_HASH_LEN 20
#define CRYPT_BLKLEN 8
#define HMAC_DEFAULT_STRING_LEN 64
#define HMAC_STARTED 1
#define HMAC_FINISHED 2
/*********************************/
/* Structure Definitions */
/*********************************/
typedef struct _Key_t_ {
int magic; // Magic number
void *pContext;
int state; // State of object
ALG_ID algId; // Algorithm Id
DWORD flags; // General flags associated with key
void *algParams; // Parameters for algorithm
uchar IV[MAX_BLOCKLEN];
uchar Temp_IV[MAX_BLOCKLEN];
uchar *pbKey;
DWORD cbKey;
uchar *pbSalt;
DWORD cbSalt;
BYTE *pbData;
DWORD cbData;
DWORD cbEffectiveKeyLen;
int mode;
int pad;
int mode_bits;
BOOL InProgress; // if key is being used
BOOL fUIOnKey; // flag to indicate if UI was to be set on the key
} Key_t;
// Packed version of Key_t. This is used when building opaque
// blobs, and is necessary to properly support WOW64 operation.
typedef struct _Packed_Key_t_ {
// BLOBHEADER
int magic; // Magic number
int state; // State of object
ALG_ID algId; // Algorithm Id
DWORD flags; // General flags associated with key
uchar IV[MAX_BLOCKLEN];
uchar Temp_IV[MAX_BLOCKLEN];
DWORD cbKey;
DWORD cbData;
DWORD cbEffectiveKeyLen;
int mode;
int pad;
int mode_bits;
BOOL InProgress; // if key is being used
BOOL fUIOnKey; // flag to indicate if UI was to be set on the key
// cbKey data bytes
// cbData data bytes
} Packed_Key_t;
typedef struct {
int magic; // Magic number
void *pContext; // associated context
int state; // State of hash object
ALG_ID algId; // Algorithm Id
DWORD size; // Size of hash
void *pMAC; // pointer to mac state
BYTE hashval[MAX_HASH_LEN];
BYTE *pbData;
DWORD cbData;
Key_t *pKey;
BOOL fInternalKey;
ALG_ID HMACAlgid;
DWORD HMACState;
BYTE *pbHMACInner;
DWORD cbHMACInner;
BYTE *pbHMACOuter;
DWORD cbHMACOuter;
union {
#ifdef CSP_USE_MD5
MD5_CTX md5;
#endif // CSP_USE_MD5
#ifdef CSP_USE_SHA1
A_SHA_CTX sha;
#endif // CSP_USE_SHA1
} algData;
} Hash_t;
/*********************************/
/* Definitions */
/*********************************/
#define CONTEXT_MAGIC 0xDEADBEEF
#define CONTEXT_RANDOM_LENGTH 20
typedef struct _PStore_Info
{
HINSTANCE hInst;
void *pProv;
GUID SigType;
GUID SigSubtype;
GUID ExchType;
GUID ExchSubtype;
LPWSTR szPrompt;
DWORD cbPrompt;
} PSTORE_INFO;
/*********************************/
/* Structure Definitions */
/*********************************/
typedef struct {
DWORD magic; // Magic number
DWORD dwProvType; // Type of provider being called as
LPSTR szProvName; // Name of provider being called as
BOOL fMachineKeyset; // TRUE if keyset is for machine
DWORD rights; // Privileges
BOOL fIsLocalSystem; // check if running as local system
KEY_CONTAINER_INFO ContInfo;
Key_t *pSigKey; // pointer to the DSS sig key
Key_t *pKExKey; // pointer to the DH key exchange key
HKEY hKeys; // Handle to registry
DWORD dwEnumalgs; // index for enumerating algorithms
DWORD dwEnumalgsEx; // index for enumerating algorithms
DWORD dwiSubKey; // index for enumerating containers
DWORD dwMaxSubKey; // max number of containers
void *contextData; // Context specific data
CRITICAL_SECTION CritSec; // critical section for decrypting keys
HWND hWnd; // handle to window for UI
PSTORE_INFO *pPStore; // pointer to PStore information
LPWSTR pwszPrompt; // UI prompt to be used
DWORD dwOldKeyFlags; // flags to tell how keys should be migrated
DWORD dwKeysetType; // type of storage used
HANDLE hRNGDriver; // handle to hardware RNG driver
EXPO_OFFLOAD_STRUCT *pOffloadInfo; // info for offloading modular expo
DWORD dwPolicyId; // Index into policy keylengh arrays.
} Context_t;
/*********************************/
/* Policy Definitions */
/*********************************/
extern PROV_ENUMALGS_EX *g_AlgTables[];
// NOTE -- These definitions must match the order of entries in g_AlgTables.
#define POLICY_DSS_BASE 0 // Policy for MS_DEF_DSS_PROV
#define POLICY_DSSDH_BASE 1 // Policy for MS_DEF_DSS_DH_PROV
#define POLICY_DSSDH_ENHANCED 2 // Policy for MS_ENH_DSS_DH_PROV
#define POLICY_DSSDH_SCHANNEL 3 // Policy for MS_DEF_DH_SCHANNEL_PROV
/*********************************/
/* Function Definitions */
/*********************************/
extern void
freeContext(
Context_t *pContext);
extern Context_t *
checkContext(
HCRYPTPROV hProv);
extern Context_t *
allocContext(
void);
// Initialize a context
extern DWORD
initContext(
IN OUT Context_t *pContext,
IN DWORD dwFlags,
IN DWORD dwProvType,
IN LPCSTR szProvName,
IN DWORD dwPolicyId);
extern HCRYPTPROV
AddContext(
Context_t *pContext);
extern HCRYPTHASH
addContextHash(
Context_t *pContext,
Hash_t *pHash);
extern Hash_t *
checkContextHash(
Context_t *pContext,
HCRYPTHASH hHash);
// Add key to context
extern HCRYPTKEY
addContextKey(
Context_t *pContext,
Key_t *pKey);
// Check if key exists in context
extern Key_t *
checkContextKey(
IN Context_t *pContext,
IN HCRYPTKEY hKey);
// random number generation prototype
extern DWORD
FIPS186GenRandom(
IN HANDLE hRNGDriver,
IN BYTE **ppbContextSeed,
IN DWORD *pcbContextSeed,
IN OUT BYTE *pb,
IN DWORD cb);
// Scrub sensitive data from memory
extern void
memnuke(
volatile BYTE *pData,
DWORD dwLen);
#include "dh_key.h"
extern DWORD EncryptPrivateKeyInMemory(
IN DHKey_t *pDH,
IN BOOL fSigKey);
extern DWORD CopyAndDecryptPrivateKey(
IN DHKey_t *pDH,
IN DHKey_t *pDH_copy,
IN BOOL fSigKey);
#endif