pycrypto | The Python Cryptography Toolkit | Cryptography library

 by   pycrypto Python Version: v2.7a1 License: Non-SPDX

kandi X-RAY | pycrypto Summary

kandi X-RAY | pycrypto Summary

pycrypto is a Python library typically used in Security, Cryptography applications. pycrypto has no bugs, it has build file available and it has high support. However pycrypto has 4 vulnerabilities and it has a Non-SPDX License. You can download it from GitHub.

This is a collection of both secure hash functions (such as SHA256 and RIPEMD160), and various encryption algorithms (AES, DES, RSA, ElGamal, etc.). The package is structured to make adding new modules easy. This section is essentially complete, and the software interface will almost certainly not change in an incompatible way in the future; all that remains to be done is to fix any bugs that show up. If you encounter a bug, please report it in the GitHub issue tracker at.

            kandi-support Support

              pycrypto has a highly active ecosystem.
              It has 2402 star(s) with 647 fork(s). There are 120 watchers for this library.
              It had no major release in the last 6 months.
              There are 153 open issues and 29 have been closed. On average issues are closed in 222 days. There are 60 open pull requests and 0 closed requests.
              It has a negative sentiment in the developer community.
              The latest version of pycrypto is v2.7a1

            kandi-Quality Quality

              pycrypto has 0 bugs and 0 code smells.

            kandi-Security Security

              pycrypto has 4 vulnerability issues reported (1 critical, 1 high, 2 medium, 0 low).
              pycrypto code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              pycrypto has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              pycrypto releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              pycrypto saves you 6955 person hours of effort in developing the same functionality from scratch.
              It has 14410 lines of code, 954 functions and 129 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed pycrypto and discovered the below as its top functions. This is intended to give you an instant insight into pycrypto implemented functionality, and help decide if they suit your requirements.
            • Return the SSH private key
            • Encrypt data
            • Pads data to block_size
            • Build a PBKDF1 hash of a password
            • Decrypt a PBK2 object
            • Decodes an object from binary string
            • Pads padding to block_size
            • Decrypts a PEM encoded string
            • Sign M and K
            • Update the state of a component
            • Update the state of a smooth mac
            • Returns a copy of the CMAC object
            • Verify that a MAC is valid
            • Verify that a mac is valid
            • Return hexadecimal digest
            • Verify the signature
            • Export the Key object
            • Encrypt a private key
            • Imports an SSH key
            • Imports the given extern key
            • Decrypts a private key
            • Decrypts a private key from a private key
            • Generate a random prime
            • Builds the extension modules
            • Sign a HMAC - SHA1 hash
            • Generate a RSA key
            Get all kandi verified functions for this library.

            pycrypto Key Features

            No Key Features are available at this moment for pycrypto.

            pycrypto Examples and Code Snippets

            No Code Snippets are available at this moment for pycrypto.

            Community Discussions


            How to install Crypto using pip in windows
            Asked 2022-Apr-05 at 09:33

            I tried with pycrypto, pycryptodome, and crypto seperately.. But it shows ModuleNotFoundError: No module named 'Crypto'



            Answered 2022-Feb-07 at 10:58

            simply deleted my existing folder of pycrpto/pycryptodome-3.11.0 located at ..\Python\Python310\Lib\site-packages (if any..), then tried

            pip install pycryptodome



            Alternative for pycrypto package
            Asked 2022-Mar-18 at 15:24

            I'm trying to install pycrypto package, but I got still getting an error i don't know why ? i have python 3.9, is there any alternatives ?

            As you can see bellow, this is the error that I got :



            Answered 2022-Mar-18 at 15:24

            pycrypto doesn't work with python3, you can use instead pycryptodome :



            can't install pycrypto, python 3.10, how to fix?
            Asked 2022-Jan-18 at 21:46

            Cannot install pycrypto. Windows 10, build tools have. P.S(pycryptodome is not installing, required version of python < 3.5) Error



            Answered 2021-Oct-10 at 15:31

            I'd wager something is missing, or that version of Pycrypto just doesn't work on your Python 3.10 on 64-bit Windows. (Pycrypto hasn't been updated since 2013. You probably don't want to use it.)

            Could you get whatever you want done with cryptography, i.e. pip install cryptography? There seem to be pre-compiled wheels for Windows for it.

            There's also a fork of pycryptodome, pycryptodomex, that might help.



            Fail to build Yocto extensible SDK
            Asked 2022-Jan-02 at 13:11

            I'm new to Yocto and I've been trying to setup for developing with devtool.

            I've followed the instructions from from the Yocto Linux Kernel Development Manual, but I've made a change to Step #2, setting MACHINE = stm32mp1 since I'm targeting the STM32MP157D-DK1. However, Step #5 fails, where it asks you to build the SDK using the command bitbake core-image-minimal -c populate_sdk_ext with the following error:



            Answered 2022-Jan-02 at 13:11

            I've fixed the build issue. It required adding meta-python2 as I did; but instead of IMAGE_INSTALL_append = " python-dev", TOOLCHAIN_HOST_TASK_append = " nativesdk-python-core" is needed instead in local.conf.



            from import Mega ModuleNotFoundError: No module named 'mega'
            Asked 2021-Dec-26 at 17:18

            I have a problem. For my project, I need to move files from the directory to the mega cloud. But when trying to run the code, it gives an error. Also when trying to pip install it turns out the following:



            Answered 2021-Dec-26 at 17:13

            Go to your terminal/cmd and write this command if you have pip/pip3:



            pycharm error happening at random time: Process finished with exit code 134 (interrupted by signal 6: SIGABRT)
            Asked 2021-Nov-30 at 20:26

            I am working with pycharm community on a tensorflow model with keras backend, sometimes this error appears in a random time, specially after I call pyplot and close the window:



            Answered 2021-Nov-30 at 20:26

            Looks like this is part of an actively tracked issue with Tkinter in PyCharm. You can find the reference on the Pycharm's developer's issue tracker. The issue is undiagnosed, but if looking at similar problems with Tk on StackOverflow, one can see that it's an issue with thread safety and/or multithreading.

            All I can do is speculate as to the cause, which is not helpful, however, I can at least collate the suggested workarounds:

            1. Switch to a different Matplotlib backend (See docs: What is a backend?). Such as Qt5, but you will need to make sure they are available in your environment.

              This approach is the most promising as other backends are better able to deal with not being the main thread or are explicitly safe for multi-threading. It's also the simplest unless you have a really specific reason for preferring TkAgg.

            2. Do not use the debugger with interactive plots.

            3. Set "Variables Loading Policy" to "Synchronously" in Debugger as suggested by a PyCharm dev in the linked issue.

            4. Enable "Scientific mode" in Pycharm.

            5. More esoteric workarounds such as closing your figures within the code before drawing the second one. Example, after plotting the first figure:



            AES Encryption in Java porting to Python
            Asked 2021-Nov-20 at 14:13

            DISCLAIMER: This is INSECURE encryption that I've inherited and everyone involved knows that. What I'm trying to do here is a first step in getting off this legacy system that has even bigger problems that this.

            I have an existing system in Java that I am attempting to port to Python that performs an AES encryption as such:



            Answered 2021-Nov-20 at 00:45

            You need everything to be the exact same between both versions. This is not currently true; fix that.

            Your java code uses:

            • AES at block size 128, because that's just how AES rolls. Nothing to configure.
            • AES key size of 128, 192, or 256 bits.
            • The key.
            • The Mode of Operation. Your java code uses ECB (which is insecure). You've told your python code to use GCM. That's, obviously, not going to work. You need to specify ECB there, too.
            • Given that it's ECB, there is no IV.
            • The padding mode. Java code is doing PKCS5Padding here.
            • Crypto is fundamentally byte based but you're trying to encrypt strings, which aren't. That means the string is being converted to bytes, and that means a charset encoding is used. You didn't specify in your java code which means you get 'platform default'. Horrible idea, but if you can't change the java side, figure out what that is, and use the same encoding in your python code.
            • Finally, your java code base64's the result.

            For most of these, I simply can't tell you; the code you pasted is insufficient. For example, AES key size and whether the keys are actually identical? I have no idea - you tell me. How did you make that SecretKey key object?

            I'm not as familiar with python but it sure looks like you base64-encode it, and then decode it again. That's.. no, don't do that. Your java code encodes and that's that. Your python code should base64 encode and that's that.

            I'm pretty sure python also defaults to PKCS5Padding.

            That leaves the encoding mode which you 100% mismatched between java and python give what little code you pasted, and the way you construct the keys. If the text you're encrypting isn't straight ASCII, it's somewhat likely charset encoding is also causing a difference.

            It's crypto. One tiny difference and the outputs will be quite different.



            How do I change the terminal inside Visual Studio code to use the non-Rosetta one i.e. have it use the arm64 one?
            Asked 2021-Sep-16 at 16:47

            I am new to python and am trying to run a python 2.7 script. Got pip for python 2.7 and installed a dependency of pyCrypto from the mac terminal shell.

            The downloaded python script, I want to try, runs fine in the terminal app when I execute it using python2.

            Now I open it in vscode and try to run the script in its terminal and I get



            Answered 2021-Aug-14 at 12:16

            I'm not familiar with VSCode, but you can manually force the chosen architecture slice of anything you launch with the arch command (see man arch).

            If you have a script that you'd normally launch like:



            Type from a custom C++ library within Cython?
            Asked 2021-Sep-10 at 17:07

            I'm working on wrapping some code via Cython. The C++ implementation can be found palisade-python-demo ckks_wrapper.h. For the moment, I'm focusing on wrapping the class CiphertextInterfaceType, copied below for convenience.



            Answered 2021-Sep-10 at 06:44

            Firstly, you don't need to declare it as a private variable. There's no way to do this or purpose in doing this. Responding to your suggestion in the comments that you might be able to use double underscores (__x) analagous to Python: there's no way for Cython to generate C++ code that can access the private variable therefore there's no value in this.

            As a general rule, Cython only needs to know about the parts of the public interface that you want to access. So if you don't need the other functions you can happily omit them too. I'll assume you do though.

            Cython does have some understanding of C++ templates using square brackets. There are limitations here but you can cover most code:



            How can I use Miniconda to create a pure Python virtual environment?
            Asked 2021-Aug-22 at 19:29

            When I use the following command to create a new virtual environment, it succeeds.



            Answered 2021-Aug-22 at 01:23

            When I create my_ven at least with conda 4.9.2 the environment seems to be empty.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            lib/Crypto/PublicKey/ in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto's ElGamal implementation.
            The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it, which makes it easier for context-dependent attackers to obtain sensitive information by leveraging a race condition in which a child process is created and accesses the PRNG within the same rate-limit period as another process.

            Install pycrypto

            PyCrypto is written and tested using Python version 2.1 through 3.3. Python 1.5.2 is not supported. The modules are packaged using the Distutils, so you can simply run "python build" to build the package, and "python install" to install it. Linux installation requires the Python developer tools to be installed. These can be found in the ``python-dev`` package on Debian/Ubuntu and the ``python2-devel`` package on Red Hat/Fedora. If you are using a non-standard Python version for your distribution, you may require a different package. Consult your package manager’s documentation for instructions on how to install these packages. Other distributions may have different package names. To verify that everything is in order, run "python test". It will test all the cryptographic modules, skipping ones that aren’t available. If the test script reports an error on your machine, please report the bug using the bug tracker (URL given above). If possible, track down the bug and include a patch that fixes it, provided that you are able to meet the eligibility requirements at It is possible to test a single sub-package or a single module only, for instance when you investigate why certain tests fail and don’t want to run the whole suite each time. Use "python test --module=name", where name is either a sub-package (Cipher, PublicKey, etc) or a module (Cipher.DES, PublicKey.RSA, etc). To further cut test coverage, pass also the option "--skip-slow-tests". To install the package under the site-packages directory of your Python installation, run "python install".


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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          • HTTPS


          • CLI

            gh repo clone pycrypto/pycrypto

          • sshUrl


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