Computer Tips [https://com.puter.tips/]

Thursday, November 05, 2020

A primer on RSA

Homomorphic Encryption is a way of performing computations on encrypted data. Both RSA and ElGamal encryption techniques possess multiplicative homomorphic properties. These algorithms support only one operation (multiplication) on encrypted data and so they are termed as partial homomorphic encryption schemes. By using RSA and ElGamal, the encrypted data could be multiplied together without performing decryption. If needed, the results after such computations could be returned in decrypted form. This scheme reduces computation time and increases the security and privacy of data being processed. Many organizations rely on third-party to outsource their large amount of electronic data for storage. It may be needed to perform some computations on the encrypted data on the server-side provided by an untrusted third party. Homomorphic Encryption will be much useful in such applications.

Microsoft SEAL installation on macOS

Microsoft SEAL is an easy-to-use open-source (MIT licensed) homomorphic encryption library developed by the Cryptography and Privacy Research Group at Microsoft. Microsoft SEAL is written in modern standard C++ and is easy to compile and run in many different environments. For more information about the Microsoft SEAL project, see sealcrypto.org.

brew install cmake autoconf automake libtool shtool gflags
xcode-select --install
git clone https://github.com/google/googletest
cd googletest-master
cmake .
make
make install
git clone https://github.com/microsoft/SEAL
cd SEAL

Aspect Ratio	Proportion
17:9	1.88
16:9	1.77
5:3	1.66
16:10	1.6
3:2	1.5
4:3	1.33
5:4	1.25

Install git-lfs in MacOS

Git Large File Storage (LFS) replaces large files such as audio samples, videos, datasets, and graphics with text pointers inside Git, while storing the file contents on a remote server like GitHub.com or GitHub Enterprise.

1. Download git-lfs from https://git-lfs.github.com/

2. Extract tarball: $tar zxvf git-lfs-darwin-amd64-v2.10.0.tar.gz

3. Run install script: $sudo ./install.sh

4. Allow git-lfs app from Menu > System Preferences > Security & Privacy > allow git-lfs

5. Intsall git-lfs from git: $git lfs install

Monday, March 30, 2020

Google Search API in Python 3

[image source: https://towardsdatascience.com/current-google-search-packages-using-python-3-7-a-simple-tutorial-3606e459e0d4]

Install the Google package in python:

pip install google

Code:

try :

        from googlesearch import search

except ImportError:

        print("No Module named 'google' Found")

count = 0

for i in search(query="devharsh", tld='co.in', lang='en'):

        count += 1

        print(i)

        if(count > 20):

                break

Output:

(base) devharsh@Devharshs-MBP Downloads % python google_search.py

http://devharshinfotech.com/

http://devharshinfotech.com/aboutus.html

http://devharshinfotech.com/services.html

http://devharshinfotech.com/banking.html

http://devharshinfotech.com/clients.html

https://www.linkedin.com/company/devharsh-infotech-pvt-ltd-

https://www.facebook.com/devharshinfotech/

https://www.glassdoor.com/Overview/Working-at-Devharsh-Infotech-EI_IE1489739.11,28.htm

https://www.zaubacorp.com/company/DEVHARSH-INFOTECH-PRIVATE-LIMITED/U30007MH2004PTC146993

https://www.devharshinfotech.co.in/

https://www.justdial.com/Mumbai/Devharsh-Infotech-Pvt-Ltd-Near-Jaswanti-Landmark-Vikhroli-West/022PXX22-XX22-180816132003-K8B9_BZDET

https://www.indeed.co.in/Devharsh-Infotech-Pvt-Ltd,-Vikroli,-West-jobs-in-Vikhroli,-Mumbai,-Maharashtra

https://www.indiamart.com/luckyforms/profile.html

https://www.dnb.com/business-directory/company-profiles.devharsh_infotech_private_limited.4573fff3e216bfdf56a77b57d67fd683.html

https://panjiva.com/Devharsh-Infotech-Pvt-Ltd/30939713

https://www.fundoodata.com/companies-detail/Devharsh-Infotech-Pvt-Ltd/101820.html

https://www.zoominfo.com/c/devharsh-infotech-limited/358353372

https://github.com/devharsh

https://www.indiamart.com/devharsh-infotech-ltd/

https://hamariweb.com/names/hindu/hindi/boy/devharsh-meaning_25329

http://www.babynology.com/name/devharsh-m.html