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2026-06-18

使用RSA私钥解密 - DecryptWithRsa ​

函数简介 ​

使用RSA私钥对加密的密文进行解密。

接口名称 ​

DecryptWithRsa

DLL调用 ​

c
long DecryptWithRsa(long instance, string cipher, string privateKey, int paddingType);

参数说明 ​

参数名类型说明
instance长整数型OLAPlug对象的指针，由 CreateCOLAPlugInterFace 接口生成。
cipher字符串要解密的密文。
privateKey字符串RSA私钥。
paddingType整数型填充类型：0-PKCS1；1-OAEP。

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
std::string cipher = ola.EncryptWithRsa("hello ola", publicKey, 0);
std::string plain = ola.DecryptWithRsa(cipher, privateKey, 0);
csharp
using OLAPlug;

var ola = new OLAPlugServer();
string cipher = ola.EncryptWithRsa("hello ola", publicKey, 0);
string plain = ola.DecryptWithRsa(cipher, privateKey, 0);
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
cipher = ola.EncryptWithRsa("hello ola", public_key, 0)
plain = ola.DecryptWithRsa(cipher, private_key, 0)
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
ola.DecryptWithRsa(cipher, privateKey, 0);
cpp
var ola = com("OlaPlug.OlaSoft")
ola.DecryptWithRsa(cipher, privateKey, 0);
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
ola.DecryptWithRsa(cipher, privateKey, 0);
text
.局部变量 ola, OLAPlug
ola.创建 ()
ola.DecryptWithRsa(cipher, privateKey, 0);
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
ola.DecryptWithRsa(cipher, privateKey, 0);
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
ola.DecryptWithRsa(cipher, privateKey, 0);
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
ola.DecryptWithRsa(cipher, privateKey, 0);

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
long ptr = DecryptWithRsa(instance, cipher, privateKey, 0);
if (ptr != 0) {
    char buffer[4096] = {0};
    GetStringFromPtr(ptr, buffer, sizeof(buffer));
    FreeStringPtr(ptr);
}
csharp
using System.Runtime.InteropServices;
using System.Text;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int GetStringFromPtr(long ptr, StringBuilder lpString, int size);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int FreeStringPtr(long ptr);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int GetStringSize(long ptr);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long DecryptWithRsa(long ola, string cipher, string privateKey, int paddingType);

long instance = CreateCOLAPlugInterFace();
long ptr = DecryptWithRsa(instance, cipher, privateKey, 0);
if (ptr != 0) {
    StringBuilder sb = new StringBuilder(GetStringSize(ptr) + 1);
    GetStringFromPtr(ptr, sb, sb.Capacity);
    FreeStringPtr(ptr);
    string plain = sb.ToString();
}
python
from ctypes import CDLL, c_int, c_int64

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
ptr = ola.DecryptWithRsa(instance, cipher, private_key, 0)

返回值 ​

返回值说明
非 0成功，返回 解密后的明文字符串的指针。
0失败。