Ejemplo n.º 1
0
std::string encodeForSaving(const char* value, const char* user_token) 
{
    std::string res("");

    if ((user_token != NULL) && (strlen(user_token) > 0)) {
        if (value == NULL || strlen(value) == 0) {
            return res; 
        }
        
        DataTransformer* enc = DataTransformerFactory::getEncoder(DT_DES);
        TransformationInfo info;
        info.size = (long)strlen(value)*sizeof(char);
        info.password = user_token;
        char* v = strdup(value);
        char* desValue = enc->transform(v, info);
        
        DataTransformer* b64Enc = DataTransformerFactory::getEncoder(DT_B64);
        char* b64Value = b64Enc->transform(desValue, info); 
        
        free(v);
        
        if (desValue) {
            free(desValue);
        }
        
        res = b64Value;
        delete [] b64Value;
    } else {
        res = value;
    }

    return res;
}
USE_NAMESPACE

//
// IMPORTANT: this test case encodes/decodes a UNICODE string; make sure
// to update it to UTF8 strings when used with such content.
//
void testEncryption() {
    char* clearText = "This is clear text.\nLet's see if encryption/decryption works!";
    char* password = "******";

    DataTransformer* b64e = DataTransformerFactory::getEncoder("b64");
    DataTransformer* b64d = DataTransformerFactory::getDecoder("b64");
    DataTransformer* dese = DataTransformerFactory::getEncoder("des");
    DataTransformer* desd = DataTransformerFactory::getDecoder("des");

    TransformationInfo infoe, infod;

    infoe.size = strlen(clearText)*sizeof(char);
    infoe.password = password;

    LOG.info("Clear text");
    LOG.info("%s", clearText);

    char* desText = dese->transform(clearText, infoe);
    char* b64Text = b64e->transform(desText, infoe);

    LOG.info("Clear text");
    LOG.info("%s", b64Text);

    delete [] desText;

    infod.size = infoe.size;
    infod.password = infoe.password;
    desText = b64d->transform(b64Text, infod);
    clearText = desd->transform(desText, infod);

    char* clearString = new char[infod.size/sizeof(char)+1];
    strncpy(clearString, clearText, infod.size/sizeof(char));
    clearString[infod.size/sizeof(char)] = 0;

    LOG.info("Clear text");
    LOG.info("%s", clearString);

    delete [] clearString; delete [] clearText;
    delete [] b64Text; delete [] desText;
}
Ejemplo n.º 3
0
std::string decodeAfterReading(const char *value, const char* user_token) 
{
    std::string res(value);
    if ((user_token != NULL) && (strlen(user_token) > 0)) {
        if (value == NULL || strlen(value) == 0) {
            return "";
        }
        
        // Password is stored as b64(des(password))
        DataTransformer* b64Dec = DataTransformerFactory::getDecoder(DT_B64);
        TransformationInfo info;
        
        char* v = strdup(value);
        info.size = (long)strlen(v)*sizeof(char);
        char* b64DecValue = b64Dec->transform(v, info);
        
        DataTransformer* dec = DataTransformerFactory::getDecoder(DT_DES);
        info.password = user_token;
        
        char* desValue = dec->transform(b64DecValue, info);
        if (desValue != NULL && info.size > 0) {
            desValue[info.size] = 0;
        }
        
        free(v);
        
        if (desValue != NULL) {
            res = desValue;
        }
        delete [] b64DecValue;

        if (info.newReturnedData == true) {
            delete [] desValue;
        }               
    }         
    return res;          
}