Below is the list of pages for this tag.

Cryptography on Windows Part 4 - Symmetric cryptography I

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In a prior post, I described the use of Windows CryptoAPI to compute message digests and message authentication codes which ensure integrity of messages. We now move on to the use of symmetric algorithms in cryptography, which can be used for both message confidentiality and integrity. Asymmetric algorithms will be covered in future posts. Refer to the introductory post in this series for the difference between the two.

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Cryptography on Windows Part 3 - Message digests and hashes

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In my prior post, I introduced several abstractions — Cryptographic Service Providers, cryptographic contexts and key containers — that are part of Windows CryptoAPI and promised to look at cryptographic keys next.

Well, I changed my mind, figuring it might be better to first talk about simpler operations that do not require the use of keys at all. This post thus describes the generation of hashes, message digests and message integrity codes using Windows CryptoAPI and TWAPI.

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Cryptography on Windows Part 2 - CSPs, contexts and containers

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This is the second in a series of posts on the use of cryptography on Windows. The previous blog post introduced the basic concepts related to cryptography. Here we delve into how those concepts are implemented in Windows at a system or architectural level and of course, how one accesses them from Tcl. This will lay the ground for discussing the actual cryptographic operations in future posts.

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Cryptography on Windows Part 1 - Introduction

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Security is currently the No. 1 priority for the software industry; and if that's not the case, it should be, given the current state of affairs with daily reports of major computer break-ins, credit card fraud, identity theft etc. It is important for applications, and application writers, to be aware of these issues and make use of all available technologies to protect against attacks.

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Hotkeys on Demand

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There is no shortage of hotkey programs for Windows, many of them of high quality. And of course Windows itself allows you to define hotkeys. However, a hotkey program in Tcl is not only very simple to write, it offers the full flexibility and power of Tcl behind it. Meaning what exactly? Read on.

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Playing God on Windows

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There are times during software development when you want to run in interactive mode with maximum privileges on a system, be God as it were. One might think running as Administrator would do it but it doesn't. To be truly omnipotent on Windows, you have to run under the LocalSystem account[1]. It is easy enough with Tcl and this post shows you how. As a side bonus, it also describes how to inject processes into the interactive user's desktop to run under the user's account as well.

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