Search found 595 matches

by paulej
Thu Nov 04, 2021 1:07 am
Forum: AES Crypt
Topic: How to build AES Crypt for Android shared Library ( JNI )
Replies: 21
Views: 39103

Re: How to build AES Crypt for Android shared Library ( JNI )

Simple API to perform AES encryption on Android with no dependancies. This is the Android counterpart to the AESCrypt library Ruby and AESCrypt-ObjC created by Gurpartap Singh . It used the same weak :'( security defaults i.e Blank IV noted below. For compatiblity with AESCrypt, AESCrypt-Android ha...
by paulej
Sun Oct 24, 2021 5:31 pm
Forum: AES Crypt
Topic: Decryption tools?
Replies: 4
Views: 12575

Re: Decryption tools?

GnuPG and AES Crypt are not compatible. Only AES Crypt will open AES Crypt files. That's also true of encrypted file created with OpenSSL. Only OpenSSL can open those. RSA is a public/private key algorithm. It is not generally used to encrypt data. Rather, it is usually just used to encrypt a key th...
by paulej
Fri Jul 16, 2021 6:31 pm
Forum: AES Crypt
Topic: AES Crypt Error message: Message has been altered and shou
Replies: 11
Views: 32104

Re: AES Crypt Error message: Message has been altered and shou

Oh, I can definitely fake a tampered file. I tested that rather extensively when writing AES Crypt, after all. Guarding against that is why there is an HMAC. Sadly, there is a bug in the logic, though, that I did fail to find. There is one octet near the end of the file called the "modulo"...
by paulej
Thu Jul 15, 2021 5:45 pm
Forum: AES Crypt
Topic: AES Crypt Error message: Message has been altered and shou
Replies: 11
Views: 32104

Re: AES Crypt Error message: Message has been altered and shou

I checked the source and, indeed, the call to remove the file happens only after the decrypt_stream() call is made to decrypt the file and an error value is returned. So, the approach I suggested would work to get around the unwanted delete on failure. I'd suggest that as opposed to changing the cod...
by paulej
Thu Jul 15, 2021 5:11 am
Forum: AES Crypt
Topic: AES Crypt Error message: Message has been altered and shou
Replies: 11
Views: 32104

Re: AES Crypt Error message: Message has been altered and shou

Sorry you had that issue. The simplest solution to this is to use the command line version and direct output to stdout (-) and direct it to a file. For example: aescrypt -d -p foo -o - file.doc.aes >file.doc I didn't check the code to see if that last block is written, but I can look. If you want to...
by paulej
Tue Jul 06, 2021 2:38 am
Forum: AES Crypt
Topic: Cannot load AES Crypt
Replies: 9
Views: 16138

Re: Cannot load AES Crypt

I have both a business and personal OneDrive. I use my personal OneDrive to share files with people since the business account shares user or domain information as a part of the link, if I recall. I did not like that. This is something I wish Microsoft would change, but I'll readily admit I haven't ...
by paulej
Mon Jul 05, 2021 7:07 pm
Forum: AES Crypt
Topic: Cannot load AES Crypt
Replies: 9
Views: 16138

Re: Cannot load AES Crypt

I appreciate you doing that, because I had never tried it, myself. Indeed, the context menu does not appear for files out in the cloud. I forget how I wrote that code, but I do recall making an effort to only present that menu for "regular" files, so certain types of "links" woul...
by paulej
Mon Jul 05, 2021 2:59 pm
Forum: AES Crypt
Topic: Cannot load AES Crypt
Replies: 9
Views: 16138

Re: Cannot load AES Crypt

Once you run the .msi file, you're set. Just right-click on a file you want to encrypt and you should see an option that says "AES Encrypt" or "AES Decrypt". Choose that option and a box will appear prompting you for a password. Once you provide a password, it will do it's job an...
by paulej
Thu Jul 01, 2021 2:46 am
Forum: AES Crypt
Topic: Bruteforcer tool
Replies: 4
Views: 19403

Re: Bruteforcer tool

@radium, Here ya go: http://www.aescrypt.com/download/v3/linux/aescrack.tgz Have a look at decrypt.c, and specifically decrypt_optimized(). You can integrate that logic with the generation of passwords you're using to see if a v1 or greater file can be decrypted using the password you try. The v0 fi...
by paulej
Sat Jun 19, 2021 2:11 pm
Forum: AES Crypt
Topic: AESCRYPT SOFTWARE AUDITS
Replies: 3
Views: 8057

Re: AESCRYPT SOFTWARE AUDITS

Yes. Issues have been fixed over the years. There are less important issues on the to-do list.