krishnact’s gists

krishnact / gist:37f8ab487fe70b6210b1e735ddc9d08b

Created December 22, 2018 17:27

How to dump certificate using openssl?

echo | openssl s_client -connect ${SERVER}:${PORT} 2>/dev/null | openssl x509 -text

krishnact / gist:315614e2dc402c31893733423fe7747e

Last active January 8, 2019 19:12

How to get CPU ID in Java?

	use following dependency:
	<dependency>
	<artifactId>oshi-core</artifactId>
	<groupId>com.github.oshi</groupId>
	<version>3.11.0</version>
	</dependency>

	and use this code:

	public static String getCPUId() {

krishnact / checkSshAgent.sh

Last active January 8, 2019 14:23

How to use ssh agent in cygwin.

	#!/bin/bash
	#name this file as ~/bin/checkSshAgent.sh and put at the end of your ~/.bash_profile as shown below (remove the ##)
	##
	## . ~/bin/checkSshAgent.sh
	##
	AGENT_PID=`ps -ef \| grep ssh-agent \| grep -v grep \| awk '{print $2;}'`
	if [ -f ~/.ssh/agent-info ]
	then
	echo Agent info exists
	else

krishnact / find.groovy

Last active January 9, 2019 04:54

A small "find" utility implementation using Groovy

	@Grapes([
	@GrabResolver(name='jitpack.io', root='https://jitpack.io') ,
	@Grab('org.slf4j:slf4j-log4j12:1.7.7') ,
	@Grab('com.h2database:h2:1.4.196') ,
	@Grab('com.github.krishnact:commandlinetool-base:0.4.10') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-sql') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-cli-commons') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-json') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-xml') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-templates')

krishnact / HoneypotSshd.groovy

Created January 29, 2019 03:35

A trivial ssh server in groovy using Apache sshd to print username and passwords for use with SecureCRT

	@Grapes([
	@GrabResolver(name='jitpack.io', root='https://jitpack.io'),
	@Grab('org.slf4j:slf4j-log4j12:1.7.7'),
	@Grab('com.h2database:h2:1.4.196'),
	@Grab('com.github.krishnact:commandlinetool-base:0.4.10'),
	@Grab('org.apache.sshd:sshd-core:2.1.0'),
	@Grab('org.apache.sshd:sshd-cli:2.1.0'),
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-sql') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-cli-commons') ,
	@GrabExclude(group = 'org.codehaus.groovy', module='groovy-json') ,

krishnact / log4j.properties

Created January 31, 2019 02:49

	log4j.rootLogger=INFO, consoleAppender, firstFileLogger

	log4j.appender.consoleAppender=org.apache.log4j.ConsoleAppender
	log4j.appender.consoleAppender.layout=org.apache.log4j.PatternLayout
	# Print the date in ISO 8601 format
	log4j.appender.consoleAppender.layout.ConversionPattern=%d [%t] %-5p %c - %m%n

	# Define the file appender
	log4j.appender.firstFileLogger=org.apache.log4j.RollingFileAppender
	# Set the name of the file

krishnact / cl_napalm.py

Created April 26, 2019 02:04

	# Python3 support
	from __future__ import print_function
	from __future__ import unicode_literals
	import socks
	import socket
	# import helpers
	from napalm.base import get_network_driver
	from napalm.base.clitools import helpers

	# stdlib

krishnact / encDec.groovy

Last active June 12, 2019 02:03

Groovy Symmetric Key Encryption/Decryption

	String encrypt_decrypt(String data, String symmKey, int encOrDec) {

	String ALGO = "AES";
	javax.crypto.spec.SecretKeySpec key = new javax.crypto.spec.SecretKeySpec(symmKey.md5().toString().decodeHex(), ALGO);
	javax.crypto.Cipher c = javax.crypto.Cipher.getInstance(ALGO);
	String retVal = "";
	if (encOrDec == 1) {
	c.init(javax.crypto.Cipher.ENCRYPT_MODE, key);
	byte[] encVal = c.doFinal(data.getBytes("UTF-8"));
	retVal= new String(encVal.encodeHex().toString());

krishnact / createInfluxAPIJwtToken.sh

Created October 18, 2020 02:07

Create a JWT token that can be used with InfluxDB API

	#!/bin/bash
	#Creates JWT token for InfluxDB
	INFLUXDB_USER_NAME=$1
	NUMBER_OF_DAYS=$2
	NOW_SEC=$(date +%s)
	NUMBER_OF_SECONDS=$((NUMBER_OF_DAYS*86400))
	EXP_TIME=$((NOW_SEC+NUMBER_OF_SECONDS))
	SECRET=$3

krishnact / gist:db78c41f955c379862cf2c5ead91d9f2

Created March 11, 2021 23:01

openSSHTool.sh

	#!/bin/bash

	ACTION=$1
	KEY=$2
	SRCFILE=$3
	OUTFILE=$4

	function usage(){
	echo $0 '[encrypt\|decrypt] KEYFILE SRCFILE OUTFILE'
	echo for decrypt KEYFILE is private Key file

Krishna C krishnact