AWS IAM: create role for mediaconvert
Step 1: IAM > Roles > Create role Custom trust policy: Step 2: Choose policy, example: s3-and-mediaconvert Step 3: Fill fields Role name and Description…
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AWS error: You must use the subscription API to subscribe your account to the service before using this operation
AWS error: Solution to fix: Step 1: Install aws-cli Step 2: configure Step 3: Get Endpoint Now you must use API with this endpoint
Create IAM user for AWS
Step 1: Go to page Users: https://us-east-1.console.aws.amazon.com/iamv2/home?region=us-east-1#/users Click button Add Users Step 2: Step 3: Example we need set permissions for S3 and Mediaconvert We…
Windows: how to install tesseract
Step 1: install Cygwin Read this article: http://tutorialspots.com/how-to-install-ssh-daemon-on-windows-2954.html Step 2: install apt-cyg Read this article: http://tutorialspots.com/how-to-add-packages-after-install-cygwin-3237.html Step 3: install tesseract List all tesseract packages: https://cygwin.com/cgi-bin2/package-grep.cgi?grep=tesseract&arch=x86_64…
Windows 7 fix error: Windows cannot verify the digital signature for the drivers required for this device
Windows 7 fix error: Step 1: Permanently disabling driver signature enforcement 1a. Press Windows + R, type “command prompt” in the dialogue box, right-click on…
Google OAuth REST API: getting user’s email address
Step 1: create google authorization url with scope must include https://www.googleapis.com/auth/userinfo.email Example: Step 2: get access_token Documentation: https://developers.google.com/identity/protocols/oauth2/web-server#httprest_3 Step 3: Method 1: Method 2: Result:
Lua: slice table
Code snippet: Example: Result: Online demo
VMPC stream cipher implement in Lua
VMPC (Variably Modified Permutation Composition) is a stream cipher similar to the well known and popular cipher RC4 designed by Ron Rivest. It was designed…
Lua: bitwise xor for Lua < 5.2
Lua: bitwise xor for Lua < 5.2 Example:
Lua + Nginx | Openresty : Using many SSL certificates in a server block
With Nginx you can use many SSL certificates with many server blocks. You can’t do this with only one server block. But with Openresty or…