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Fix Tor v3 onion address checksum: SHA-256 -> SHA3-256
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The Tor v3 spec requires SHA3-256 (FIPS-202) for the .onion address
checksum computation, but ToStringIP() was using SHA-256 (double-hash).
This caused every reconstructed .onion address to have incorrect suffix
characters, making all outbound Tor connections fail with SOCKS5 'general
failure' - the entire network had 0 Tor peers despite working Tor instances.

Fix: Replace Hash() call with OpenSSL EVP_sha3_256() which is available
in OpenSSL 3.0+ and produces the correct FIPS-202 SHA3-256 checksum.

Tested: All 5 onion seed nodes now connect successfully.
This commit is contained in:
Krystie
2026-04-02 14:16:02 -07:00
parent 2fba88bfc5
commit 207e1ed676
2 changed files with 11 additions and 6 deletions
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src/clientversion.h
+1 -1
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@@ -8,7 +8,7 @@
// These need to be macros, as version.cpp's and triangles-qt.rc's voodoo requires it
#define CLIENT_VERSION_MAJOR 5
#define CLIENT_VERSION_MINOR 5
#define CLIENT_VERSION_REVISION 0
#define CLIENT_VERSION_REVISION 1
#define CLIENT_VERSION_BUILD 0
// Converts the parameter X to a string after macro replacement on X has been performed.