NewLC - File Encryption - Comments

Re: File Encryption

N_A — Mon, 10 Sep 2007 20:28:30 +0200

It depends which device(s) you mean. Some won't have any E-drive in the first place, others might have protected files/directories not accessible to the Java VM (your MIDlet) and there can also be device where the access is not restricted. There is no universal truth in this matter.

Re: File Encryption

Truf — Mon, 10 Sep 2007 15:36:46 +0200

What you mean:

From Java, all files/directories on the device are not accessible in any case.

So, i can't read a file content on e:\ drive in J2ME?

Re: File Encryption

N_A — Mon, 10 Sep 2007 10:03:37 +0200

For direct file access from J2ME, a prerequisite is JSR-75 support.

Per device, at least for Nokia devices, you will find it listed here: http://forum.nokia.com/devices (I don't know anyone that has extracted the data to a single list of devices with JSR-75 support, but in general you assume it based on the S60 or S40 version where the support first appeared, and then assume that all devices based on that release and later will still have it).

From Java, all files/directories on the device are not accessible in any case.

File Encryption

Truf — Sun, 09 Sep 2007 08:03:26 +0200

Hi,
I going to encrypt some files on my Memory card by MIDLet. I know what i need JSR-75 support. Also i hear what not all directories accessable (for ex root folders).
Where can i see a list of devices which support JSR-75 (i don't like idea to view every phone specs separetely)?
Is any way to avoid JSR-75 requirement?
Can i read and write data to files in a memory card root folder?