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<title>xavi/slcl/README.md, branch libweb-configure</title>
<subtitle>Small and lightweight cloud storage written in C99 and POSIX.1-2008.
</subtitle>
<id>https://gitea.privatedns.org/xavi/slcl/atom?h=libweb-configure</id>
<link rel='self' href='https://gitea.privatedns.org/xavi/slcl/atom?h=libweb-configure'/>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/'/>
<updated>2026-02-13T06:55:08+00:00</updated>
<entry>
<title>README.md: Add packages for Alpine Linux</title>
<updated>2026-02-13T06:55:08+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2026-02-12T22:02:08+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=568eaa63cf3b7a8a7fa2caf126f103f1c63493dd'/>
<id>urn:sha1:568eaa63cf3b7a8a7fa2caf126f103f1c63493dd</id>
<content type='text'>
</content>
</entry>
<entry>
<title>README.md: Fix wrong package name</title>
<updated>2026-02-13T06:55:08+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2026-02-12T21:49:08+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=712c762bec81ef56d83f2a7ab05f7dba1ecf9021'/>
<id>urn:sha1:712c762bec81ef56d83f2a7ab05f7dba1ecf9021</id>
<content type='text'>
</content>
</entry>
<entry>
<title>README.md: Replace OpenSSL with libsodium</title>
<updated>2025-10-10T23:20:02+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2025-10-10T23:20:02+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=a53f6b3975026aeb9f7e0a524f4dfd1cd81dff25'/>
<id>urn:sha1:a53f6b3975026aeb9f7e0a524f4dfd1cd81dff25</id>
<content type='text'>
This was a leftover from the following commit:

commit 10e42591ac72285736d5cc4ee5e7c2f68dbf1e4b
Author: Xavier Del Campo Romero
Date:   Wed Oct 8 13:50:52 2025 +0200

    Replace OpenSSL with libsodium and argon2id
</content>
</entry>
<entry>
<title>README.md: Add build instructions for thumbnail</title>
<updated>2025-10-09T21:03:17+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2025-10-09T21:03:17+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=f15d534796129c53f2c24bf8eb9b69d686b957b0'/>
<id>urn:sha1:f15d534796129c53f2c24bf8eb9b69d686b957b0</id>
<content type='text'>
</content>
</entry>
<entry>
<title>README.md: Update copyright notice</title>
<updated>2025-10-09T21:03:03+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2025-10-09T21:03:03+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=8f21b3e034b65fa82fbd7da8fe841fece21df357'/>
<id>urn:sha1:8f21b3e034b65fa82fbd7da8fe841fece21df357</id>
<content type='text'>
</content>
</entry>
<entry>
<title>Allow building thumbnail from the top-level build</title>
<updated>2025-10-08T20:57:00+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2025-10-08T20:54:47+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=8d8179d3b412cdd2c1af60539b9aec89631f3fe6'/>
<id>urn:sha1:8d8179d3b412cdd2c1af60539b9aec89631f3fe6</id>
<content type='text'>
</content>
</entry>
<entry>
<title>Replace OpenSSL with libsodium and argon2id</title>
<updated>2025-10-08T20:55:44+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2025-10-08T11:50:52+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=10e42591ac72285736d5cc4ee5e7c2f68dbf1e4b'/>
<id>urn:sha1:10e42591ac72285736d5cc4ee5e7c2f68dbf1e4b</id>
<content type='text'>
The SHA256-based password hashing algorithm used by slcl(1) and
usergen(1) is considered insecure against several kinds of attacks,
including brute force attacks. [1]

Therefore, a stronger password hashing algorithm based on the Argon2id
key derivation function is now used by default. While OpenSSL does
support Argon2id, it is only supported by very recent versions [2],
which are still not packaged by most distributions as of the time of
this writing. [3]

As an alternative to OpenSSL, libsodium [4] had several benefits:

- It provides easy-to-use functions for password hashing, base64
encoding/decoding and other cryptographic primitives used by slcl(1)
and usergen(1).

- It is packaged by most distributions [5], and most often only the patch
version differs, which ensures good compatibility across distributions.

Unfortunately, and as opposed to OpenSSL, libsodium does not come with
command-line tools. Therefore, usergen(1) had to be rewritten in C.

In order to maintain backwards compatiblity with existing databases,
slcl(1) and usergen(1) shall support the insecure, SHA256-based password
hashing algorithm. However, Argon2id shall now be the default choice for
usergen(1).

[1]: https://security.stackexchange.com/questions/195563/why-is-sha-256-not-good-for-passwords
[2]: https://docs.openssl.org/3.3/man7/EVP_KDF-ARGON2/
[3]: https://repology.org/project/openssl/versions
[4]: https://www.libsodium.org/
[5]: https://repology.org/project/libsodium/versions
</content>
</entry>
<entry>
<title>Implement directory download as ZIP</title>
<updated>2025-10-08T00:03:05+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi92@disroot.org</email>
</author>
<published>2025-10-06T21:02:51+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=00dd37604d50cbf3fb27ec0631b4d4b6d2ee893a'/>
<id>urn:sha1:00dd37604d50cbf3fb27ec0631b4d4b6d2ee893a</id>
<content type='text'>
Thanks to the fdzipstream library [1] and zlib [2], it is possible to
generate ZIP files on-the-fly, therefore requiring no extra disk space
usage and only a small amount of memory.

Unfortunately, as of the time of this writing fdzipstream is not
packaged by any distributions yet [3], so it had to be imported as a git
submodule as a workaround.

While libarchive [4] could be an interesting alternative, writing ZIP
files is only supported by very recent versions (&gt;= 3.8.0), which are
still not packaged by many distributions [5], either.

Moreover, libarchive is a package with several dependencies other than
zlib and is significantly larger compared to fdzipstreams, so
fdzipstreams was ultimately considered a better fit for this purpose.

[1]: https://github.com/CTrabant/fdzipstream.git
[2]: http://zlib.net/
[3]: https://repology.org/projects/?search=fdzipstream
[4]: https://www.libarchive.org/
[5]: https://repology.org/project/libarchive/versions
</content>
</entry>
<entry>
<title>README.md: Update according to thumbnail generation</title>
<updated>2025-09-24T09:03:39+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi.dcr@tutanota.com</email>
</author>
<published>2023-07-22T02:14:41+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=ebb825d3c622f74f0c47a84e1e388b709dd06c7d'/>
<id>urn:sha1:ebb825d3c622f74f0c47a84e1e388b709dd06c7d</id>
<content type='text'>
</content>
</entry>
<entry>
<title>README.md: Fix CMake build instructions</title>
<updated>2024-05-04T23:07:01+00:00</updated>
<author>
<name>Xavier Del Campo Romero</name>
<email>xavi.dcr@tutanota.com</email>
</author>
<published>2024-05-04T23:00:01+00:00</published>
<link rel='alternate' type='text/html' href='https://gitea.privatedns.org/xavi/slcl/commit/?id=32af8ddd3d63fe0936f9ae5b6ca09285bed1baff'/>
<id>urn:sha1:32af8ddd3d63fe0936f9ae5b6ca09285bed1baff</id>
<content type='text'>
The previous instructions were simply wrong because `cmake ..` would
attempt to configure the project from the parent directory, instead of
the build directory.
</content>
</entry>
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