[Interest] Qt 5.12 Beta 3 slows down ext Javascript library (RSA encrypt)

[ekke]

created a example app and now noticed, the app doesn't freeze,
but the exection of encrypt() slows down from

5 sec (Qt 5.11.2) to
92 sec (Qt 5.12 Beta3)

will open a bug report

Am 05.11.18 um 12:00 schrieb ekke:
> Qt 5.12 Beta 3. Android and iOS
>
> in one of my apps I had to encrypt the user password using a JavaScript
> library
>
> http://www-cs-students.stanford.edu/%7Etjw/jsbn/
>
> from there I put these .js into resources:
>
> <RCC>
>     <qresource prefix="/">
>         <file>js/rsbn/base64.js</file>
>         <file>js/rsbn/jsbn.js</file>
>         <file>js/rsbn/prng4.js</file>
>         <file>js/rsbn/rng.js</file>
>         <file>js/rsbn/rsa.js</file>
>     </qresource>
> </RCC>
>
> in QML:
>
> import "../../js/rsbn/jsbn.js" as MyJsbn
> import "../../js/rsbn/rsa.js" as MyRsa
> import "../../js/rsbn/rng.js" as MyRng
> import "../../js/rsbn/prng4.js" as MyPrng4
> import "../../js/rsbn/base64.js" as MyBase64
>
> function doEncrypt() {
>     var rsa = new MyRsa.RSAKey();
>     rsa.setPublic(dataServer.modulusHex(), "10001")
>     console.log("5.12 OK")
>     var res = rsa.encrypt(pwText.text)
>     console.log("5.12 freeze")
>     if(res) {
>         return MyRsa.linebrk(res, 64)
>     } else {
>         return ""
>     }
> }
>
> in 5.10.1 or 5.11.2 this is working fine
>
> in 5.12 Beta 3 it freezes as soon as calling rsa.encrypt()
>
> any idea what could be different in 5.12 ?
>
> thx
>
> ekke
>
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