s2n ☆
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Description:
Implementation of the TLS/SSL protocols
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @AWS_Amazon  |  formulae.brew.sh
Category: Security
Tags: tls ssl cryptography networking security
Install: brew install s2n
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.
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
Use Cases:
  • Securing client-server communications in cloud applications
  • Implementing TLS in embedded systems
  • Building secure networking into custom applications
Alternatives:
  • OpenSSL – S2n is significantly smaller and aims to be safer by default, whereas OpenSSL is a full-featured, more complex suite.
  • BoringSSL – S2n is designed to be simpler and more auditable, while BoringSSL is Google's fork of OpenSSL tailored for their specific needs.
Version History
Detected Version Rev Change Commit
Sep 15, 2025 8:57pm 0 VERSION_BUMP eb4ae733
Dec 17, 2024 3:30am 0 VERSION_BUMP 7a35ae93
Dec 17, 2024 2:37am 0 VERSION_BUMP a9a96fa6
Nov 13, 2024 9:53pm 0 VERSION_BUMP 2db2629e
Oct 23, 2024 6:51pm 0 VERSION_BUMP 22246b61
Oct 10, 2024 1:31am 0 VERSION_BUMP 7f9c35e9
Oct 10, 2024 1:12am 0 VERSION_BUMP fa473c69
Sep 20, 2024 7:01pm 0 VERSION_BUMP b6a31d4f
Sep 10, 2024 11:37pm 0 VERSION_BUMP db2362c6
Aug 9, 2024 9:46pm 0 VERSION_BUMP 0f015976
Jul 19, 2024 9:42pm 0 VERSION_BUMP a463a5bf
May 1, 2024 6:45pm 0 VERSION_BUMP 746b8eb4
Dec 22, 2023 3:48am 0 VERSION_BUMP f67c781f
Oct 18, 2023 2:42pm 0 VERSION_BUMP bf1318bf
Oct 6, 2023 4:04am 0 VERSION_BUMP dd37d1cc
Aug 14, 2023 11:42pm 0 VERSION_BUMP 1be2e01b
Jun 1, 2023 9:48pm 0 VERSION_BUMP 0f1581aa
Mar 14, 2023 3:57am 0 VERSION_BUMP 00bdb687
Mar 14, 2023 3:57am 0 VERSION_BUMP debc4b07
Mar 6, 2023 9:05pm 0 VERSION_BUMP f4f1cf49
Mar 6, 2023 9:05pm 0 VERSION_BUMP 98811e2c
Feb 16, 2023 3:08am 0 VERSION_BUMP 026b6d7a
Feb 16, 2023 3:08am 0 VERSION_BUMP 169dad72
Feb 9, 2023 9:04am 0 VERSION_BUMP b59ec96a
Feb 9, 2023 9:04am 0 VERSION_BUMP 85f076b1
Feb 1, 2023 1:33am 0 VERSION_BUMP ad13a42b
Feb 1, 2023 1:32am 0 VERSION_BUMP bfd302fa
Jan 27, 2023 3:05pm 0 VERSION_BUMP 4024e22f
Jan 27, 2023 3:05pm 0 VERSION_BUMP ff63391c
Jan 19, 2023 4:05am 0 VERSION_BUMP bc5feedc
Jan 19, 2023 4:05am 0 VERSION_BUMP 552bcc6c
Jan 6, 2023 8:05am 0 VERSION_BUMP bd392b1c
Jan 6, 2023 8:05am 0 VERSION_BUMP 6cc1044c
Dec 14, 2022 8:06am 0 VERSION_BUMP ec50f1b1
Dec 14, 2022 8:06am 0 VERSION_BUMP fd62f771
Dec 8, 2022 3:07am 0 VERSION_BUMP 64180158
Dec 8, 2022 3:07am 0 VERSION_BUMP 6fa4641b
Nov 30, 2022 9:42am 0 VERSION_BUMP 312aa53d
Nov 30, 2022 2:32am 0 VERSION_BUMP e7c0a7db
Nov 30, 2022 2:32am 0 VERSION_BUMP fc3b8381
Nov 22, 2022 2:43pm 0 VERSION_BUMP 67aded55
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