使用CryptoAPI加解密的程序,在XP上运行良好,在2000上加密会错,都不知道什么原因?

[hthbserver]

server端:
1 导出公私密码对的公钥
2 发送给client端

client端:
1 导入收到的公钥数据得到了正确的HCRYPTKEY句柄
2 加密自己的数据
b = CryptImportKey(hProv, k.pKey, k.len, 0, 0, &hPubKey);
char pass[1024];
memset(pripass,0,1024);
strcpy(pripass,"myprivatepassword");
strcpy(pass,"myprivatepassword");

DWORD dwCount = strlen(pass);
b = CryptEncrypt(hPubKey, 0, TRUE, 0, (BYTE*)pass, &dwCount, 1024);
在XP下返回b为1,说明加密正确,但在2000下返回了0,出错,错误提示为:不正确的项.

有高手知道这是怎么回事吗?

[hthbserver]

看样子是我2000上的platforms SDK版本太低引起的，但是我的client端需要在更低的版本运行，那我该怎么办？

[rageliu]

CryptEncrypt()使用前判断参数是否正确

[hthbserver]

肯定正确呀,程序完全相同,在XP下正确的参数,在2000下也正确呀.

[rageliu]

刚看了下文档!支持2000的
Under some circumstances, Microsoft cryptographic service providers may not allow encryption when used in France, in which case this function fails with the error code NTE_PERM. This may occur on down-level platforms such as Windows 95, Windows 98, and Windows NT 4.0, depending on the system's configuration and the version of the CSPs. When executing on these platforms, an application should check for this condition and behave accordingly.

[hthbserver]

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