https://github.com/awnumar/memguard

Secure software enclave for storage of sensitive information in memory.
https://github.com/awnumar/memguard

crypto cryptography go golang memory security

Last synced: 2 days ago
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Secure software enclave for storage of sensitive information in memory.

• Host: GitHub
• URL: https://github.com/awnumar/memguard
• Owner: awnumar
• License: apache-2.0
• Created: 2017-04-22T07:40:40.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2024-04-26T17:04:26.000Z (8 months ago)
• Last Synced: 2024-12-03T02:05:44.795Z (9 days ago)
• Topics: crypto, cryptography, go, golang, memory, security
• Language: Go
• Homepage:
• Size: 9.08 MB
• Stars: 2,557
• Watchers: 50
• Forks: 125
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Authors: AUTHORS

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README

        


  

  
MemGuard

  
Software enclave for storage of sensitive information in memory.

  


    

    

  


---

This package attempts to reduce the likelihood of sensitive data being exposed when in memory. It aims to support all major operating systems and is written in pure Go.

## Features

* Sensitive data is encrypted and authenticated in memory with XSalsa20Poly1305. The [scheme](https://spacetime.dev/encrypting-secrets-in-memory) used also [defends against cold-boot attacks](https://spacetime.dev/memory-retention-attacks).

* Memory allocation bypasses the language runtime by [using system calls](https://github.com/awnumar/memcall) to query the kernel for resources directly. This avoids interference from the garbage-collector.

* Buffers that store plaintext data are fortified with guard pages and canary values to detect spurious accesses and overflows.

* Effort is taken to prevent sensitive data from touching the disk. This includes locking memory to prevent swapping and handling core dumps.

* Kernel-level immutability is implemented so that attempted modification of protected regions results in an access violation.

* Multiple endpoints provide session purging and safe termination capabilities as well as signal handling to prevent remnant data being left behind.

* Side-channel attacks are mitigated against by making sure that the copying and comparison of data is done in constant-time.

Some features were inspired by [libsodium](https://github.com/jedisct1/libsodium), so credits to them.

Full documentation and a complete overview of the API can be found [here](https://godoc.org/github.com/awnumar/memguard). Interesting and useful code samples can be found within the [examples](examples) subpackage.

## Installation

```

$ go get github.com/awnumar/memguard

```

API is experimental and may have unstable changes. You should pin a version. [[modules](https://github.com/golang/go/wiki/Modules)]

## Contributing

* Submitting program samples to [`./examples`](examples).

* Reporting bugs, vulnerabilities, and any difficulties in using the API.

* Writing useful security and crypto libraries that utilise memguard.

* Implementing kernel-specific/cpu-specific protections.

* Submitting performance improvements.

Issues are for reporting bugs and for discussion on proposals. Pull requests should be made against master.