Mark Wright markscottwright

I write PKI, cryptographic and payments stuff, mostly.

6 followers · 13 following

Washington, DC

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markscottwright / CertFetcher.java

Created December 12, 2018 17:41

How to fetch certificates from a TLS connection

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.net.UnknownHostException;
	import java.security.KeyManagementException;
	import java.security.KeyStore;
	import java.security.KeyStoreException;

markscottwright / PKCS7.java

Last active June 16, 2024 15:27

How to create a PKCS7/CMS signature using BouncyCastle

	package scratch;

	import java.io.FileInputStream;
	import java.io.IOException;
	import java.security.KeyStore;
	import java.security.KeyStoreException;
	import java.security.NoSuchAlgorithmException;
	import java.security.PrivateKey;
	import java.security.Provider;
	import java.security.Security;

markscottwright / DisableHttpSecurity.java

Created March 1, 2019 20:17

How to disable TLS certificate verification in java

	package scratch;

	import java.io.IOException;
	import java.net.URL;
	import java.security.KeyManagementException;
	import java.security.NoSuchAlgorithmException;
	import java.security.cert.CertificateException;
	import java.security.cert.X509Certificate;

	import javax.net.ssl.HttpsURLConnection;

markscottwright / movemouse.cpp

Last active September 29, 2020 20:53

How to move a mouse cursor to a particular monitor

	#include <windows.h>
	#include <stdio.h>
	#include <string.h>

	RECT monitors[100];
	int numMonitors = 0;

	BOOL SaveMonitorInfo(
	HMONITOR Arg1,
	HDC Arg2,

markscottwright / gist:6b55d9b01d5769e9a7924dfaca40b4b5

Last active August 10, 2021 15:12

How to get an Azure Managed Identity token using curl

token=`curl -s 'http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https%3A%2F%2Fstorage.azure.com' -H Metadata:true  | grep -o 'access.token[": ]\+[^"]\+' | sed s/access_token...//`

markscottwright / Totp.java

Created September 23, 2021 16:27

How to do a totp in Java

	import java.nio.ByteBuffer;
	import java.nio.ByteOrder;
	import java.security.InvalidKeyException;
	import java.security.NoSuchAlgorithmException;
	import java.time.Instant;

	import javax.crypto.Mac;
	import javax.crypto.spec.SecretKeySpec;

	import org.apache.commons.codec.binary.Base32;

markscottwright / QrCodeExtractor.java

Created September 23, 2021 19:57

How to extract the totp secret from a QR code

	package scratch;

	import java.io.File;
	import java.io.IOException;
	import java.net.URI;
	import java.net.URISyntaxException;

	import javax.imageio.ImageIO;

	import com.google.zxing.BinaryBitmap;

markscottwright / .inputrc

Created November 14, 2021 04:14

VI mode inputrc

	set editing-mode vi
	set bell-style none
	$if mode=vi
	set keymap vi-command
	"gg": beginning-of-history
	"G": end-of-history
	set keymap vi-insert
	"kj": vi-movement-mode
	"\C-w": backward-kill-word
	"\C-p": history-search-backward

markscottwright / Main.java

Last active February 9, 2022 00:11

How to use an SSH2 key in Java.

	import static org.bouncycastle.crypto.util.OpenSSHPrivateKeyUtil.parsePrivateKeyBlob;

	import java.io.IOException;
	import java.io.StringReader;
	import java.security.InvalidKeyException;
	import java.security.KeyFactory;
	import java.security.NoSuchAlgorithmException;
	import java.security.Signature;
	import java.security.SignatureException;
	import java.security.spec.InvalidKeySpecException;

markscottwright / ImageOcr.java

Last active May 9, 2022 09:49

A single-file (although depending on Tesseract) tool for extracting text from images.

	package scratch;

	import java.awt.AWTException;
	import java.awt.Color;
	import java.awt.Dimension;
	import java.awt.Font;
	import java.awt.Frame;
	import java.awt.Graphics;
	import java.awt.Graphics2D;
	import java.awt.GraphicsEnvironment;

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