Description:
Implementation of the TLS/SSL protocols
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Type: Formula
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Tracked Since: Dec 28, 2025
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Links:
Homepage |
@AWS_Amazon |
formulae.brew.sh
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Category: Security
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Tags:
tls
ssl
cryptography
networking
security
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Install:
brew install s2n
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About:
S2n (signal to noise) is a lightweight implementation of the TLS/SSL protocols developed by AWS. It is designed to be small, fast, and secure by default, minimizing the attack surface. The library is written in C and focuses on providing a simple API for securing network communications.
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Key Features:
- Small, readable codebase for easy auditing
- Memory safe (written in C with strict bounds checking)
- High performance with minimal overhead
- Supports TLS 1.2 and 1.3
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Use Cases:
- Securing client-server communications in cloud applications
- Implementing TLS in embedded systems
- Building secure networking into custom applications
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Alternatives:
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OpenSSL
– S2n is significantly smaller and aims to be safer by default, whereas OpenSSL is a full-featured, more complex suite.
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BoringSSL
– S2n is designed to be simpler and more auditable, while BoringSSL is Google's fork of OpenSSL tailored for their specific needs.
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