[Solved] Program with QCA library crashing on other computers

macav

I'm trying QCA library, specifically AES encryption, everything's working fine on computer with Qt SDK, but when I try to run program on other computers, it crashes. I don't know if i'm missing some dlls, or there's some other problem. I have qca2.dll in program directory, qca-ossl plugin in crypto subdirectory, I have dlls from openssl library.
Does anybode have any clue?

lgeyer

You will have to provide more information.

What does "crash" mean? Are there any error messages or stack traces?
Did you accidentally ship a release version of your application with debug libraries or vice versa?

macav

here's screenshot:
!http://macav.panacom.sk/crash.png!

i've tried also debug version and release versions, i didn't combine them. Are there some dll dependencies other than openssl dlls?

macav

just one more thing, when I run qcatool2.exe, it says "Cannot load library qca-ossl2.dll: The specified procedure could not be found."

lgeyer

Are you sure that you aren't mixing different library versions?

macav

Okay, I made it work :) Previously, I used binaries downloaded from qca site, now I tried to compile latest 2.0.3 version, then qca-ossl plugin and it's working.
thanks

chinnisasi

Hi,
i followed all the steps given in the below link
http://www.essentialunix.org/index.php?option=com_content&view=article&id=48:qcatutorial&catid=34:qttutorials&Itemid=53.

firstly, I am able to compile latest qca 2.0.3 and able to call library functions in Qca.
Second, I am able to compile and make qca-ossl2.dll..but i am unable to load the this dll.( that y i m not able to call aes, rsa, and other block cipher algos)

this the error i m getting when i using the qcatool2.exe
qca-ossl2.dll: failed to load: The plugin 'C:/QtSDK/Desktop/Qt/4.7.4/mingw/plugins/crypto/qca-ossl2.dll' uses incompatible Qt library. Expected build key "Windows mingw release full-config", got "Windows mingw debug full-config".

if possible please explain installation procedure how u compiled qca-ossl dll

OS:
windows : version 7
QT version: 4.7.4
Qt creator: 2.3.1

macav

well, according to the error, I guess you're combining release and debug builds. I Built QCA and qca-ossl2 as both debug and release. I used "GNU Make":http://www.gnu.org/software/make/ but i think that's irrelevant .. procedure is in README/INSTALL files.. i did something like this:
QCA:
configure --debug-and-release
make
installwin

qca-ossl2:
configwin rd
qmake
make
copy lib*.dll qtdir\plugins\crypto

chinnisasi

hi,
I followed all the steps mentioned in the above post. but still i m unable to load qca-ossl plugin. when i m using QCA::supportedFeatures().. this is the following response (sha1", "key"random", "md5", "storelist")

macav

do you have dlls from openssl in the folder where exe file is? i'm not sure, but i think the necessary are ssleay32.dll and libeay32.dll

chinnisasi

still not able to load the plugin

macav

I ran out of ideas, check one more time that you have all necessary files in the folder with exe, and qca-ossl2.dll in subfolder "crypto" ..
if you're still not able to load the plguin, you can try openssl library directly, without qca

zhangjunhua

i also followed all the steps given in the below link
http://www.essentialunix.org/index.php?option=com_content&view=article&id=48:qcatutorial&catid=34:qttutorials&Itemid=53.

i can using the QCA's funtion,when i deploy the nessary dlls and exe to other computers.
there is a error with QCA.
I have checked it.the QCA can not loaded ,so i call the QCA's funtion and get a panic.

so i need help ,every one ,thanks