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<title>openssl/crypto/ascon, branch master</title>
<subtitle>TLS/SSL and crypto library.</subtitle>
<id>http://git.bktus.com/gpgfrontend/openssl/atom?h=master</id>
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<updated>2026-09-16T14:24:45Z</updated>
<entry>
<title>Add ASCON-AEAD128 cipher implementation per NIST SP 800-232</title>
<updated>2026-09-16T14:24:45Z</updated>
<author>
<name>evil-cry</name>
<email>dac8484@rit.edu</email>
</author>
<published>2025-11-05T20:01:11Z</published>
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<id>urn:sha1:0038f3ef9d524c49fd32c7d87a29942b345e3935</id>
<content type='text'>
Integrate ASCON-AEAD128 authenticated encryption cipher into OpenSSL's
default provider and libcrypto. ASCON-AEAD128 is specified in NIST
SP 800-232 and provides authenticated encryption with associated data
(AEAD) using a 128-bit key and 128-bit nonce.

Implementation details:
- Add cleanroom crypto/ascon implementation
- Add provider cipher implementation following OpenSSL stream cipher
  patterns with generated parameter dispatch tables
- Support standard AEAD operations including AAD handling, tag
  generation/verification, and context reinitialization

Fixes: #28271

Co-authored-by: Billy Brumley &lt;bbb@iki.fi&gt;
Reviewed-by: Neil Horman &lt;nhorman@openssl.org&gt;
Reviewed-by: Andrew Dinh &lt;andrewd@openssl.org&gt;
Merge-date: Wed Sep 16 14:25:19 2026
Merged-from: https://github.com/openssl/openssl/pull/29934
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