bool uc_base64_decode(const char *in, size_t inlen, unsigned char *out, size_t *outlen) {
// TODO: check updated version of wolfSSL, which expects outlen+1 bytes, but only decodes outlen
(*outlen) += 1;
const int r = Base64_Decode((const byte *) in, inlen, out, outlen);
if (r) {
UCERROR("base64 decode", r);
return false;
}
return true;
}
int Decrypt_Ex(const char *Key, const char *pInput3DES, char *pOutputCGIParameter, int iOutputLen, char *pErrMsg)
{
char szKey[MAX_CGIPARA_LEN]={0};
int iRet, iLen, iLenAfterDecrypt;
char szInput3DES[iOutputLen], szOutTmp[iOutputLen];
//pre operator
char sKey[MAX_CGIPARA_LEN]={0};
strncpy(sKey, Key, MAX_CGIPARA_LEN);
if ((iLen = strlen(sKey)) < 24)
{
for (int i = iLen;i < 24;i++)
sKey[i] = '0';
}
if ((iRet = Create3DesKey(sKey, szKey, sizeof(szKey), pErrMsg) != PAYPORTAL_OK))
{
sprintf(pErrMsg, "Create3DesKey fail [key=%s]", sKey);
return iRet;
}
//解密前解码
memset(szInput3DES, 0x0, sizeof(szInput3DES));
decode_hexstring(pInput3DES, szInput3DES, &iLen);
if ((iRet = Base64_Decode(szInput3DES, strlen(szInput3DES), (unsigned char *)szOutTmp, iOutputLen, &iLen)) != 0)
{
sprintf(pErrMsg, "Base64_Decode err[Ret=%d]", iRet);
return PORTAL_ENCRYPT_FAIL;
}
//进行3DES解密
if ((iRet = Portal_des_encrypt(szKey, (const unsigned char *)szOutTmp, (unsigned char *)pOutputCGIParameter,iLen, iOutputLen, &iLenAfterDecrypt, DES_DECRYPT, pErrMsg)) != PAYPORTAL_OK)
{
strcat(pErrMsg, "Portal_des_encrypt err");
return PORTAL_ENCRYPT_FAIL;
}
return PAYPORTAL_OK;
}
