encryptedfile | Easily encrypted OpenPGP compatible files with python | Encryption library
kandi X-RAY | encryptedfile Summary
kandi X-RAY | encryptedfile Summary
Easily encrypted OpenPGP compatible files with python
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Top functions reviewed by kandi - BETA
- Write data to the buffer
- Write the buffer
- Return the length of the given length
- Encrypt the literal buffer
- Write the encrypted data to the file
- Generate the semi - packet length
- Write lines
- Close the file
encryptedfile Key Features
encryptedfile Examples and Code Snippets
Community Discussions
Trending Discussions on encryptedfile
QUESTION
I am attempting to encrypt/decrypt files in C# ASP NET 5.0 and I can get it to work for .txt files and regular strings of course. But if I attempt to encrypt a PDF file then decrypt it, it is corrupted and I cannot open it. I am just using EBC right now, I know it isn't secure but I am just trying to test it out before I add in the other options.
...ANSWER
Answered 2021-May-02 at 19:17As stated in my comment above, there is an error in your code that is not visible because you hide the exceptions with an empty catch block. The exception is a NotSupportedException and the message is
FlushFinalBlock() method was called twice on a CryptoStream. It can only be called once
The encryption works fine with text files that are under 1024 bytes in length but any file (also text files) with a larger size will crash because the code tries to call two or more time the cryptoStream.FlushFinalBlock();
So, I have tested this change to your code and it works
QUESTION
I am using Kotlin to create and write to an encrypted file stored locally within the app to temporarily store login credentials, On Logout, I want to delete this file.
To create the file I am using the EncryptedFile.Builder method as below;
...ANSWER
Answered 2021-Apr-20 at 04:46You can simply delete the file using this -
QUESTION
I am trying to XOR a .png file (in this case a simple triangle picture).
I can read the bytes, put them into a bytearray object, XOR each byte by the key (100) and then save them to a new file.
However, I can't open the new picture. Ubuntu says it is not a PNG file. What error I am making and how can I fix it?
Code:
...ANSWER
Answered 2021-Feb-20 at 19:05The issue with my code is that a PNG file is composed of a header and chunks with some other information (Thanks to @wjandrea for the tip).
By encrypting this information, you won't be able to open the new encrypted file as image editing software won't know how to read the file.
An image editing library (Like PIL for Python) should be used instead to XOR the contents of the picture.
QUESTION
I want to encrypt a large video file called largefile.mp4 most efficiently and then decrypt it again, but there it is not working as expected.
actually there is not any error, and the files gets generated. but the new generated file is too small than the main file.
here largefile.mp4 is 100mb but newEncryptedFile.txt is 107kb and the newDecryptedFile.mp4 is 210 bytes
What is the problem ?
...ANSWER
Answered 2020-Dec-15 at 10:06I'm sorry that I did not inspect your code because you are using the UNSECURE mode ECB that should be no longer used in new projects.
Below you find a sample code for file encryption & decryption with AES in CBC mode. The program generates a random key for encryption and decryption (with an out of the key in base64 encoding for better storage), generates a random initialization vector (IV) that is written at the beginning of the encrypted file.
For decryption the first 16 bytes get read as unencrypted data, all other data go through the decryption stream.
The encryption is done in chunks of 8192 bytes with the kindly help of a CipherOutput-/InputStream.
Security warning: the code does not have any exception handling and is for educational purpose only. Kindly note that for better security you may change to an authenticated encryption (e.g. secured with an HMAC or using GCM mode).
output:
QUESTION
google introduced security-crypto jetpack library
i want to use this library for encrypt image files, in documents of library there is no sample for encryption of image files.
i converted image to bitmap - bitmap to byte array - then used library As mentioned in the document finaly file is encrypted, but when the file is decoded, a black image appears i donot get any exception where is the problem?
...ANSWER
Answered 2020-Oct-14 at 09:28You have two ways to encrypt / decrypt bitmaps.
Solution 1To use the streams provided by EncryptedFile. No need to use Base64 encoding/decoding at all.
Encrypt:
QUESTION
how to modify this AES encryption code so that it can encrypt and decrypt any type of file (pdf, docx....), because when I decrypt a pdf file or other I don't get the original file.
...ANSWER
Answered 2020-Jul-13 at 22:17As some important information regarding your source code is missing (method writeToFile, no information about the cipherAlgorithm, no information about the used key) your code is not executable.
Therefore I'm providing a sample program to encrypt and decrypt any kind of files using the AES mode ECB.
Security warning: do NOT use AES ECB Mode in production because it is UNSECURE ! It's better to use a mode like AES GCM.
Provide the filenames for the original file (plaintextfile), the encrypted file (ciphertextfile) and the decrypted file (decryptedfile) and run the program - the decrypted file is equal to the original file.
I'm using a static key (32 byte/256 bit key length) for this example - to run this program you need the unlimited crypto policies enabled on your Java system.
That's the result:
QUESTION
I am attempting to playback video files, via ExoPlayer, that I have encrypted within my app, but anytime I try to playback a video any longer than a couple of seconds, the video will not play.
I am encrypting the media with "AES/GCM/NoPadding" encryption.
Below is my custom DataSource class that I am using with Exoplayer to play the encrypted stream:
...ANSWER
Answered 2020-Jul-04 at 11:40Thanks to the following blog:
http://blog.moagrius.com/android/android-play-encrypted-video-in-exoplayer/
I was able to solve my issue.
QUESTION
Following code is written to encrypt the plain text, I am using IAIK Twofish encryption/decryption code in java below sample code works fine with 128 bit key but when i try it with 192 and 156 bit key it gives an exception that java.security.InvalidKeyException: Key must be 128, 192, or 256 bit long!-
ANSWER
Answered 2020-Jun-10 at 07:43QUESTION
i need to save and load String savedText in SharedPreferences so I need to encrypt and decrypt my string. I save my string at saveText() and load at loadText(String UNIC). UNIC is an ID to save my string. I have this code, It works, but it doesn't crypt.
...ANSWER
Answered 2020-May-15 at 08:45You can use Hawk, it supports encryption and decryption of data and uses shared prefs to store the encrypted data.
Here's the flow:
(source: https://github.com/orhanobut/hawk)
QUESTION
I'm working on testing the beta version of Google's Android Jetpack for security.
The sample code here is simple enough, but it will not compile:
...ANSWER
Answered 2020-Apr-29 at 15:55The Kotlin version also have some error, I think there has been a mistake or a typo.
Based on the code for writing files in the sample code, can you try as:
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Vulnerabilities
No vulnerabilities reported
Install encryptedfile
You can use encryptedfile like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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