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Cossack Labs Blog

29 May 2018

Reducing Docker Image Size for Acra

We tried out and described a few approaches to reducing the size of Docker images for the components of our database encryption proxy Acra. As a result, we found a way to reduce the container size by roughly 62 times.

howto Docker development Acra

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23 Nov 2017

Auditable Macros in C Code

Turning macros into auditable C code in a highly parameterised cross-platform cryptographic library Themis with a help of preprocessor customization.

Themis development cryptography

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6 Mar 2017

Importing with ctypes in Python: fighting overflows

Best cases of boring technical debt are understood when reflected properly. This post addresses a simple one: inelegant flags in core C library ended up breaking Python tests. This is no small case to us: tests breaking sometimes might end up in things seeming to work, but not really working. Not something you can afford yourself when you're doing cryptography, do you?

Themis development Python

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28 Feb 2017

Plugging leaks in Go memory management

Investigating memory leaks can be fun, sometimes. Sometimes it might even teach you a few lessons in how the language you know and like actually works.

development Go Acra

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23 May 2016

Choose your Android crypto (Infographic)

This blog post features infographic on how to choose cryptographic frameworks when developing Android apps and adds a few notes about Native/Java crypto.
 

Themis cryptography infographic applied security howto Android development

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Cossack Labs is a privately-held British company with a team of data security experts based in Kyiv, Ukraine.