mrluanma

import os
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.primitives import padding
from cryptography.hazmat.backends import default_backend
backend = default_backend()
key = os.urandom(16)

text = b'Hello, there!'

padder = padding.PKCS7(algorithms.TripleDES.block_size).padder()

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

ebraminio

// Check Iranian National Code Validity - Clojure, C#, F#, Ruby, JavaScript, Dart, Python, Scala, Java 8, PHP, C, Go, Swift, Kotlin, Groovy, Rust, Haskell, Erlang, Elixir, Power Query M Language, VBA, R, Lua, Fortran, Pascal/Delphi, Excel, Stored Procedure / MySQL
// بررسی صحت کد ملی ایران - کلوژر، سی‌شارپ، اف‌شارپ، روبی، جاوااسکریپت، دارت، پایتون، اسکالا، جاوا ۸، پی‌اچ‌پی، سی، گو، سوئیفت، کاتلین، گرووی، راست، هسکل، ارلنگ، الکسیر، پاورکوئری ام، وی‌بی ای، آر، لوآ، فرترن، پاسکال/دلفی، اکسل، مای‌اس‌کیوال

// در نسخه‌های قبل یکسان بودن اعداد نا معتبر تشخیص داده می‌شد ولی
// اعداد یکسان نامعتبر نیست https://web.archive.org/web/20170706081048/http://www.fardanews.com/fa/news/127747/رندترین-شماره-ملی-بلای-جان-صاحبش-شد

// بعضی از پیاده‌سازی‌ها سریع نیستند، می‌توانید نسخهٔ خود را بر پایهٔ
// نسخهٔ سی یا گو ایجاد کنید که بهترین سرعت را داشته باشد

/**

denji

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

soarez

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

Vestride

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

slezicz

final HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
SSLContextBuilder builder = new SSLContextBuilder();
builder.loadTrustMaterial(null, new TrustSelfSignedStrategy());
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(builder.build());
CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
requestFactory.setHttpClient(httpclient);
RestTemplate template = new RestTemplate(requestFactory);

alibo

kekru

• Open a webpage that uses the CA with Firefox
• Click the lock-icon in the addressbar -> show information -> show certificate
• the certificate viewer will open
• click details and choose the certificate of the certificate-chain, you want to import to CentOS
• click "Export..." and save it as .crt file
• Copy the .crt file to /etc/pki/ca-trust/source/anchors on your CentOS machine
• run update-ca-trust extract
• test it with wget https://thewebsite.org

riversun

package com.example;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

/**
 * Encrypt/Decrypt text2text by using Triple-DES
 * 
 * @author Tom Misawa (riversun.org@gmail.com)