实验一-密码引擎-3-加密API研究

HCRYPTPROV hCryptProv;
HCRYPTHASH hCryptHash;
HCRYPTKEY hCryptKey;


CPAcquireContext(
    hCryptProv, NULL,
    MS_DEF_PROV,
    PROV_RSA_FULL,
    CRYPT_VERIFYCONTEXT
)//为应用程序创建一个上下文
    
CPCreateHash(
    hCryptProv,
    CALG_MD5,
    0,
    0,
    &hCryptHash
) //为应用程序创建一个上下文
    
static char szHash[]=”PISAHASHDATA”; //原始字符串
DWORD dwLen=strlen(szHash);
CPHashData(hCryptHash, (BYTE*)szHash, dwLen, 0);//散列输入的数据
CPDeriveKey(hCryptProv, CALG_RC2, hCryptHash, 0, &hCryptKey);//从一个数据散列中生成一个会话密钥，它保证生成的密钥互不相同

static char szEntry[]= “PISA2002”;
DWORD dwLenIn = strlen(szEntry);
DWORD dwLenOut=dwLenIn;
CPEncrypt(hCryptKey, 0, TRUE, 0, (BYTE*)szEntry, &dwLenOut, dwLenIn);//用来加密明文
CPDecrypt(hCryptKey, 0, TRUE, 0,(BYTE*)szEntry,&dwLenOut);//用来解密先前被加密的数据
CPDestroyKey(hCryptKey);//释放一个密钥句柄，释放后，句柄将无效，密钥将无法再被访问
CPDestroyHash(hCryptHash);//删除一个散列对象句柄
CPReleaseContext(hCryptProv, NULL);//释放CPAcquireContext.创建的上下文

CK_SESSION_HANDLE hSession;
CK_MECHANISM digestMechanism;
CK_ULONG ulStateLen;
CK_BYTE data1[] = {0x01, 0x03, 0x05, 0x07};
CK_BYTE data2[] = {0x02, 0x04, 0x08};
CK_BYTE data3[] = {0x10, 0x0F, 0x0E, 0x0D, 0x0C};
CK_BYTE pDigest[20];
CK_ULONG ulDigestLen;
CK_RV rv;

/* Initialize hash operation */
rv = C_DigestInit(hSession, &digestMechanism);//初始化消息杂凑计算操作，指定计算消息杂凑的算法
assert(rv == CKR_OK);

/* Start hashing */
rv = C_DigestUpdate(hSession, data1, sizeof(data1));//对多个分组的消息进行杂凑计算
assert(rv == CKR_OK);//返回成功或者失败

/* Find out how big the state might be */
rv = C_GetOperationState(hSession, NULL_PTR, &ulStateLen);//获取设备是否存在的状态
assert(rv == CKR_OK);//返回成功或者失败

/* Allocate some memory and then get the state */
pState = (CK_BYTE_PTR) malloc(ulStateLen);
rv = C_GetOperationState(hSession, pState, &ulStateLen);//获取设备是否存在的状态

/* Continue hashing */
rv = C_DigestUpdate(hSession, data2, sizeof(data2));//对多个分组的消息进行杂凑计算
assert(rv == CKR_OK);//返回成功或者失败

/* Restore state.  No key handles needed */
rv = C_SetOperationState(hSession, pState, ulStateLen, 0, 0);
assert(rv == CKR_OK);//返回成功或者失败

/* Continue hashing from where we saved state */
rv = C_DigestUpdate(hSession, data3, sizeof(data3));//对多个分组的消息进行杂凑计算
assert(rv == CKR_OK);//返回成功或者失败

/* Conclude hashing operation */
ulDigestLen = sizeof(pDigest);
rv = C_DigestFinal(hSession, pDigest, &ulDigestLen);
if (rv == CKR_OK) {
  /* pDigest[] now contains the hash of 0x01030507100F0E0D0C */
}//返回成功或者失败

CK_FLAGS flags = 0;
CK_Dev_ID DevID;
CK_Dev_INFO DevInfo;


/* Block and wait for a slot event */
rv = SKF_WaitForSlotEvent(flags, &slotID, NULL_PTR);//等待设备的插拔事件
assert(rv == CKR_OK);//返回成功或者失败

/* See what’s up with that slot */
rv = SKF_GetDevInfo(slotID, &slotInfo);//获取设备的一些特征信息
assert(rv == CKR_OK);//返回成功或者失败