Informational 15 Bitcoin Committed Jul 18, 2026 · 05:55 UTC

test: add SipHash-1-3-UJ coverage

3aea8541 View source ↗

Public commit record

What the developer wrote

Authored by Pieter Wuille

90/100 · Strong

test: add SipHash-1-3-UJ coverage

Add SipHash-1-3-UJ outputs to the shared vectors for sequences of 8- and 32-byte blocks.
Check generic writes and applicable fixed-width `Hash` overloads against those outputs, and fuzz their equivalence including mixed normal/jumbo encodings.

The outputs were generated by an independent implementation that Claude Opus 4.8 produced using only the `SipHasher13UJ` class comment as its prompt.

Co-authored-by: Lőrinc <pap.lorinc@gmail.com>

✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context✓ Mentions testing or verification

The short version

What changed, and why it matters

This commit only adds new test cases and fuzzing coverage for an existing SipHash variant called SipHash-1-3-UJ. It does not change any production code, so it cannot introduce a security vulnerability or fix one. The change makes the software's test suite more thorough by verifying that the existing hash implementation produces expected outputs.

Recommended action

No security action required; this is a test-only change. Reviewers may verify the new test vectors independently if desired.

Security signals we found

No strong security signals were identified.

Technical analysis

Evidence from the diff

The commit extends test vectors in src/test/data/siphash.json with ‘siphash13uj’ expected values, adds a CalculateSipHash13UJ helper and corresponding BOOST_CHECK assertions in src/test/hash_tests.cpp, and adds SipHasher13UJ fuzzing equivalence checks in src/test/fuzz/integer.cpp. No implementation code in src/crypto or elsewhere is modified. The outputs were generated by an independent implementation produced by Claude Opus 4.8 from the SipHasher13UJ class comment.

Changed components

src/test/data/siphash.jsonsrc/test/hash_tests.cppsrc/test/fuzz/integer.cpp

Inspect captured patch +131 / −64

diff --git a/src/test/data/siphash.json b/src/test/data/siphash.json
index 6ea34009..19b4aaad 100644
--- a/src/test/data/siphash.json
+++ b/src/test/data/siphash.json
@@ -2,272 +2,272 @@
   {
     "key": ["0000000000000000", "0000000000000000"],
     "input": [],
-    "expected": {"siphash24": "1e924b9d737700d7"}
+    "expected": {"siphash24": "1e924b9d737700d7", "siphash13uj": "74fdd8982aa99156"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": [],
-    "expected": {"siphash24": "726fdb47dd0e0e31"}
+    "expected": {"siphash24": "726fdb47dd0e0e31", "siphash13uj": "feee657d7e331ac3"}
   },
   {
     "key": ["ffffffffffffffff", "ffffffffffffffff"],
     "input": [],
-    "expected": {"siphash24": "35dd279ee86ce565"}
+    "expected": {"siphash24": "35dd279ee86ce565", "siphash13uj": "b2203b65f6fc20f2"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0000000000000000"],
-    "expected": {"siphash24": "39d3851ca07681a7"}
+    "expected": {"siphash24": "39d3851ca07681a7", "siphash13uj": "6a74cba00ddbfeba"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["ffffffffffffffff"],
-    "expected": {"siphash24": "2a68ff30a3d9da34"}
+    "expected": {"siphash24": "2a68ff30a3d9da34", "siphash13uj": "a49b16683645df11"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0001020304050607"],
-    "expected": {"siphash24": "93f5f5799a932462"}
+    "expected": {"siphash24": "93f5f5799a932462", "siphash13uj": "636d75a66b0b2dee"}
   },
   {
     "key": ["0000000000000000", "0000000000000000"],
     "input": ["0000000000000000"],
-    "expected": {"siphash24": "e849e8bb6ffe2567"}
+    "expected": {"siphash24": "e849e8bb6ffe2567", "siphash13uj": "44ba508bb47f860a"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0000000000000000000000000000000000000000000000000000000000000000"],
-    "expected": {"siphash24": "8990d3e4299496f4"}
+    "expected": {"siphash24": "8990d3e4299496f4", "siphash13uj": "6a74cba00ddbfeba"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"],
-    "expected": {"siphash24": "e1041d47f898e431"}
+    "expected": {"siphash24": "e1041d47f898e431", "siphash13uj": "7f745a471ec7c2f6"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"],
-    "expected": {"siphash24": "7127512f72f27cce"}
+    "expected": {"siphash24": "7127512f72f27cce", "siphash13uj": "c67d87b08ca4b5c6"}
   },
   {
     "key": ["0000000000000000", "0000000000000000"],
     "input": ["0000000000000000000000000000000000000000000000000000000000000000"],
-    "expected": {"siphash24": "6c37e103dfa2827d"}
+    "expected": {"siphash24": "6c37e103dfa2827d", "siphash13uj": "44ba508bb47f860a"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["1011121314151617"],
-    "expected": {"siphash24": "76b71a8cb872b528"}
+    "expected": {"siphash24": "76b71a8cb872b528", "siphash13uj": "17bd848a0ddd6294"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["1011121314151617000000000000000000000000000000000000000000000000"],
-    "expected": {"siphash24": "070fb8d2b4264e7e"}
+    "expected": {"siphash24": "070fb8d2b4264e7e", "siphash13uj": "17bd848a0ddd6294"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0102030405060708", "0203040506070809", "030405060708090a"],
-    "expected": {"siphash24": "9b3c1cee5de9caa4"}
+    "expected": {"siphash24": "9b3c1cee5de9caa4", "siphash13uj": "46b8c5978195f0d0"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0102030405060708000000000000000000000000000000000000000000000000", "0203040506070809000000000000000000000000000000000000000000000000", "030405060708090a000000000000000000000000000000000000000000000000"],
-    "expected": {"siphash24": "e9277fda84de2f84"}
+    "expected": {"siphash24": "e9277fda84de2f84", "siphash13uj": "46b8c5978195f0d0"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f"],
-    "expected": {"siphash24": "27bd5ecb84e56c87"}
+    "expected": {"siphash24": "27bd5ecb84e56c87", "siphash13uj": "d2c0b9ab84599147"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["4041424344454647", "48494a4b4c4d4e4f", "5051525354555657", "58595a5b5c5d5e5f"],
-    "expected": {"siphash24": "27bd5ecb84e56c87"}
+    "expected": {"siphash24": "27bd5ecb84e56c87", "siphash13uj": "d630244e335448dd"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0001020304050607", "08090a0b0c0d0e0f"],
-    "expected": {"siphash24": "3f2acc7f57c29bdb"}
+    "expected": {"siphash24": "3f2acc7f57c29bdb", "siphash13uj": "7c25d372353b5aa1"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0001020304050607", "08090a0b0c0d0e0f", "1011121314151617", "18191a1b1c1d1e1f"],
-    "expected": {"siphash24": "7127512f72f27cce"}
+    "expected": {"siphash24": "7127512f72f27cce", "siphash13uj": "1aba99b7cf175f4a"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0001020304050607", "08090a0b0c0d0e0f", "1011121314151617", "18191a1b1c1d1e1f", "2021222324252627", "28292a2b2c2d2e2f", "3031323334353637", "38393a3b3c3d3e3f"],
-    "expected": {"siphash24": "acd2c40b8502cad8"}
+    "expected": {"siphash24": "acd2c40b8502cad8", "siphash13uj": "ba4cdea787bdabb9"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000", "0000000000000000"],
-    "expected": {"siphash24": "d6d266a868d1e17c"}
+    "expected": {"siphash24": "d6d266a868d1e17c", "siphash13uj": "b40ca9149482127a"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", "202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f"],
-    "expected": {"siphash24": "acd2c40b8502cad8"}
+    "expected": {"siphash24": "acd2c40b8502cad8", "siphash13uj": "6bd1d4ec2ccd0192"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", "202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f", "404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f", "606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f"],
-    "expected": {"siphash24": "deb79e256c8736ae"}
+    "expected": {"siphash24": "deb79e256c8736ae", "siphash13uj": "497a4c5f66a6c9ac"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", "202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f", "404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f", "606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f", "808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f", "a0a1a2a3a4a5a6a7a8a9aaabacadaeafb0b1b2b3b4b5b6b7b8b9babbbcbdbebf", "c0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedf", "e0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"],
-    "expected": {"siphash24": "999d0526d2a7bfd7"}
+    "expected": {"siphash24": "999d0526d2a7bfd7", "siphash13uj": "33f9f36a0690842d"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["1112131415161718", "22232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f4041"],
-    "expected": {"siphash24": "2a8b45c236d6964c"}
+    "expected": {"siphash24": "2a8b45c236d6964c", "siphash13uj": "2e989a98fc8ab941"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["22232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f4041", "1112131415161718"],
-    "expected": {"siphash24": "2086c12dd61e796a"}
+    "expected": {"siphash24": "2086c12dd61e796a", "siphash13uj": "6f62e14ce40a8928"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["a0a1a2a3a4a5a6a7", "b0b1b2b3b4b5b6b7"],
-    "expected": {"siphash24": "103eacf2c5a3c798"}
+    "expected": {"siphash24": "103eacf2c5a3c798", "siphash13uj": "3d50654ce19fef0a"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["b0b1b2b3b4b5b6b7", "a0a1a2a3a4a5a6a7"],
-    "expected": {"siphash24": "16098ab961ca74be"}
+    "expected": {"siphash24": "16098ab961ca74be", "siphash13uj": "93d52229e1bf3f12"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0102030405060708", "02030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021", "030405060708090a"],
-    "expected": {"siphash24": "f33f8a1ac89a38a5"}
+    "expected": {"siphash24": "f33f8a1ac89a38a5", "siphash13uj": "93d4844f68473bde"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20", "0203040506070809", "030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122"],
-    "expected": {"siphash24": "83a7e7cb48fcc3f0"}
+    "expected": {"siphash24": "83a7e7cb48fcc3f0", "siphash13uj": "1eeb5627f80ec45e"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0101010101010101", "0202020202020202", "0303030303030303030303030303030303030303030303030303030303030303", "0404040404040404040404040404040404040404040404040404040404040404", "0505050505050505"],
-    "expected": {"siphash24": "2da632417cf98266"}
+    "expected": {"siphash24": "2da632417cf98266", "siphash13uj": "36c183e8c31960ca"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0001020304050607", "08090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021222324252627", "28292a2b2c2d2e2f", "303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f", "5051525354555657", "58595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f7071727374757677"],
-    "expected": {"siphash24": "9fee744ff1c22fcc"}
+    "expected": {"siphash24": "9fee744ff1c22fcc", "siphash13uj": "0373fa0d4680e12a"}
   },
   {
     "key": ["0000000000000000", "0000000000000000"],
     "input": ["3031323334353637", "505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f"],
-    "expected": {"siphash24": "f4b057ed3852ca9c"}
+    "expected": {"siphash24": "f4b057ed3852ca9c", "siphash13uj": "0ca784307a2b3941"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["3031323334353637", "505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f"],
-    "expected": {"siphash24": "b0ecaab557894381"}
+    "expected": {"siphash24": "b0ecaab557894381", "siphash13uj": "40a0e330ade3b826"}
   },
   {
     "key": ["ffffffffffffffff", "ffffffffffffffff"],
     "input": ["3031323334353637", "505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f"],
-    "expected": {"siphash24": "c31e72088331c72c"}
+    "expected": {"siphash24": "c31e72088331c72c", "siphash13uj": "39b802d0fb124208"}
   },
   {
     "key": ["0123456789abcdef", "0000000000000000"],
     "input": ["3031323334353637", "505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f"],
-    "expected": {"siphash24": "f74571f90abc512c"}
+    "expected": {"siphash24": "f74571f90abc512c", "siphash13uj": "21bd1ab2c8db2044"}
   },
   {
     "key": ["0000000000000000", "0123456789abcdef"],
     "input": ["3031323334353637", "505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f"],
-    "expected": {"siphash24": "4b58713a5c1de640"}
+    "expected": {"siphash24": "4b58713a5c1de640", "siphash13uj": "bc66d61864912a68"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0100000000000000"],
-    "expected": {"siphash24": "2b91b2b085e6d1f6"}
+    "expected": {"siphash24": "2b91b2b085e6d1f6", "siphash13uj": "7426afff81e13e5d"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0000000000000080"],
-    "expected": {"siphash24": "45f93120d11c42c2"}
+    "expected": {"siphash24": "45f93120d11c42c2", "siphash13uj": "dbd8592fe9fd3b1b"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0000000000000000000000000000000000000000000000000000000000000080"],
-    "expected": {"siphash24": "52de95ec1fc46cf4"}
+    "expected": {"siphash24": "52de95ec1fc46cf4", "siphash13uj": "c946b5eafdebf91d"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0100000000000000010000000000000001000000000000000100000000000000"],
-    "expected": {"siphash24": "256fc49da00e8ae9"}
+    "expected": {"siphash24": "256fc49da00e8ae9", "siphash13uj": "28193aab7f7f53b5"}
   },
   {
     "key": ["3becfe231ec833e1", "e5fe84a1124e5b76"],
     "input": ["5d6fae7bea1143a44b6a307d8dd3a8d5946d1b50943a0a4edb5390d7f41c6e29", "d22ee74ea5bb4d8d", "8032bbb059b1b9ef", "ec2ae4550dad3c60"],
-    "expected": {"siphash24": "2f57b02b4a7cf7d6"}
+    "expected": {"siphash24": "2f57b02b4a7cf7d6", "siphash13uj": "8f201c9a3e7ca92a"}
   },
   {
     "key": ["cff49392d5b0aefe", "b8a0d7022086fc70"],
     "input": [],
-    "expected": {"siphash24": "9c7123b7b45d0895"}
+    "expected": {"siphash24": "9c7123b7b45d0895", "siphash13uj": "25f929e44740ac55"}
   },
   {
     "key": ["9bf012bb0d65f966", "f15a2c8514da1d9d"],
     "input": [],
-    "expected": {"siphash24": "a5c78c807512368a"}
+    "expected": {"siphash24": "a5c78c807512368a", "siphash13uj": "e317bf983b4cf183"}
   },
   {
     "key": ["4ac23ef0d1555a54", "4a498a3964dd2bc1"],
     "input": ["3e83c8e8b335d732", "539aea9c7872ae8f", "6f14ac803d3a9181"],
-    "expected": {"siphash24": "be7ea59e0e60a59d"}
+    "expected": {"siphash24": "be7ea59e0e60a59d", "siphash13uj": "3adb5b8275ff1694"}
   },
   {
     "key": ["eef84fb309e552b9", "e60195c78faa2ee8"],
     "input": [],
-    "expected": {"siphash24": "001e0c1c4140f9ec"}
+    "expected": {"siphash24": "001e0c1c4140f9ec", "siphash13uj": "2bdc46f9f5e83bdc"}
   },
   {
     "key": ["ecfdd5a1ea62a991", "6448b8f842081342"],
     "input": ["6d72f7bce2f0f751", "e277849660a8af7f"],
-    "expected": {"siphash24": "3bc824e8141dcdd9"}
+    "expected": {"siphash24": "3bc824e8141dcdd9", "siphash13uj": "89510c79ae874736"}
   },
   {
     "key": ["ab7a12b9c8774c7d", "38056b7041eb2098"],
     "input": ["feebaa5f18a92c7e", "192679c9e82e3aa7"],
-    "expected": {"siphash24": "783219f01bb9d829"}
+    "expected": {"siphash24": "783219f01bb9d829", "siphash13uj": "a7cb7379701c754e"}
   },
   {
     "key": ["13551d7a6089e83e", "ec3f8c0f4cbc1f7c"],
     "input": ["7a0704789365d997", "4bb21a07f4b75d0208d5d4638edcc438c9f8ffcc78e2106a0637c629f81ffbdb", "a7d8197a04173065ec896b73a6803d6113201c56fd643b241200b7ea357e6efd", "0202e1ebcf15e1a8", "316c96f5464fa473", "0700f913bbe4dad357c5db1b7e79abd29e6e590e842141a16cb6e97e6933206c"],
-    "expected": {"siphash24": "30cca0cb21a31ffe"}
+    "expected": {"siphash24": "30cca0cb21a31ffe", "siphash13uj": "638ab9733accc61a"}
   },
   {
     "key": ["0000000000000000", "0000000000000000"],
     "input": ["101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f"],
-    "expected": {"siphash24": "1ca45bed0c8a9300"}
+    "expected": {"siphash24": "1ca45bed0c8a9300", "siphash13uj": "071384882b8b1ef6"}
   },
   {
     "key": ["ffffffffffffffff", "ffffffffffffffff"],
     "input": ["101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f"],
-    "expected": {"siphash24": "acb2f25002d4ece5"}
+    "expected": {"siphash24": "acb2f25002d4ece5", "siphash13uj": "6d3cb0c74116cdd5"}
   },
   {
     "key": ["25fd75c04a240044", "4e3816151d29e2ce"],
     "input": ["8940d79240a5bf8acdf428eece829dc27d8cc2ff7b74aaeb134f66062192d308"],
-    "expected": {"siphash24": "135eaef5f79941ad"}
+    "expected": {"siphash24": "135eaef5f79941ad", "siphash13uj": "16823b5389538dba"}
   },
   {
     "key": ["aea4345a0fc4e761", "49456a8e8d82e5ee"],
     "input": ["6e0e507f21292ad46a49aa0b20efec23000474f6203f5ceaf4f9325c4e032bbe"],
-    "expected": {"siphash24": "56e57b1e7d81c846"}
+    "expected": {"siphash24": "56e57b1e7d81c846", "siphash13uj": "36ae52fdbe166c9a"}
   },
   {
     "key": ["f7ce16edcfe54eeb", "81c22c4aed3e516d"],
     "input": ["caf32c2d8d827c8e55ee92253cffc657359af1cab7f24804afabac89a436fc75"],
-    "expected": {"siphash24": "84cad9f91acd36d0"}
+    "expected": {"siphash24": "84cad9f91acd36d0", "siphash13uj": "d8ebd74386d41628"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
@@ -327,52 +327,52 @@
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0000000000000000000000000000000000000000000000000000000000000000", "0000000000000000"],
-    "expected": {"siphash24": "9aef4ef6217cbc9b"}
+    "expected": {"siphash24": "9aef4ef6217cbc9b", "siphash13uj": "71c3a354a6b56058"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", "ffffffffffffffff"],
-    "expected": {"siphash24": "ccf329a45ab38059"}
+    "expected": {"siphash24": "ccf329a45ab38059", "siphash13uj": "958c1a52a5e57e8b"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", "4041424344454647"],
-    "expected": {"siphash24": "50a2be7f0f871937"}
+    "expected": {"siphash24": "50a2be7f0f871937", "siphash13uj": "6cfc788446f0491d"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["0100000000000000000000000000000000000000000000000000000000000000", "0000000000000080"],
-    "expected": {"siphash24": "5c7d5fcb5ea2a305"}
+    "expected": {"siphash24": "5c7d5fcb5ea2a305", "siphash13uj": "9e89e2fc7abb2ba2"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f", "2021222324252627"],
-    "expected": {"siphash24": "ac705932e98104a4"}
+    "expected": {"siphash24": "ac705932e98104a4", "siphash13uj": "cdcd25f7a2ba32c5"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
     "input": ["101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f", "2122232425262728"],
-    "expected": {"siphash24": "7cbaa4ae7acddb81"}
+    "expected": {"siphash24": "7cbaa4ae7acddb81", "siphash13uj": "738d1f7d2d53622b"}
   },
   {
     "key": ["0000000000000000", "0000000000000000"],
     "input": ["101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f", "2021222324252627"],
-    "expected": {"siphash24": "22cfffe8bffea59f"}
+    "expected": {"siphash24": "22cfffe8bffea59f", "siphash13uj": "0f078522df1349f3"}
   },
   {
     "key": ["49b001bc5a213d62", "80a330a42e60a89d"],
     "input": ["6f7438d2dd360dcea691dd40e87426f4af6870315898ccbde0d3b19fcbb5ae6d", "55c36c12f25fffc9"],
-    "expected": {"siphash24": "9a5250a51a9eebfb"}
+    "expected": {"siphash24": "9a5250a51a9eebfb", "siphash13uj": "da1c5bf6cf31653d"}
   },
   {
     "key": ["f4d704fa00ce074d", "6f1a65f3fe494b0a"],
     "input": ["175202cb9f976ebd6c4ddc4a80d63b2b53e2976466041ae43b41397c41fe66ac", "803a01720ad0c5a9"],
-    "expected": {"siphash24": "70552fcc39899ae4"}
+    "expected": {"siphash24": "70552fcc39899ae4", "siphash13uj": "5725ddc762049274"}
   },
   {
     "key": ["c3f929b4cb53785c", "1693fa676a8ee165"],
     "input": ["2ac097c589bc75eb6e294605cafb3198891ff93764032225756aab86de06514b", "5c642eedd61df985"],
-    "expected": {"siphash24": "7b87d628efb69dd7"}
+    "expected": {"siphash24": "7b87d628efb69dd7", "siphash13uj": "49b121224ea53698"}
   },
   {
     "key": ["0706050403020100", "0f0e0d0c0b0a0908"],
diff --git a/src/test/fuzz/integer.cpp b/src/test/fuzz/integer.cpp
index beaec6f7..357b84e5 100644
--- a/src/test/fuzz/integer.cpp
+++ b/src/test/fuzz/integer.cpp
@@ -129,6 +129,38 @@ FUZZ_TARGET(integer, .init = initialize_integer)
         hasher.Write(extra);
         assert(presalted_hasher(u256, u32) == hasher.Finalize());
     }
+    {
+        const uint64_t data0{u160.GetUint64(0)}, data1{u160.GetUint64(1)};
+        SipHasher13UJ hasher{u64, u64_2};
+        const SipHasher13UJ fixed_hasher{u64, u64_2};
+        hasher.WriteJumbo(u256);
+        assert(fixed_hasher.Hash(u256) == hasher.Finalize());
+        hasher.Write(data0);
+        assert(fixed_hasher.Hash(u256, data0) == hasher.Finalize());
+
+        SipHasher13UJ reference{u64, u64_2};
+        SipHasher13UJ mixed{u64, u64_2};
+        reference.WriteJumbo(u256);
+        mixed.WriteJumbo(u256);
+
+        const auto write_normal{[](SipHasher13UJ& hasher, uint64_t data, bool as_jumbo) {
+            if (as_jumbo) {
+                uint256 data256{};
+                WriteLE64(data256.data(), data);
+                hasher.WriteJumbo(data256);
+            } else {
+                hasher.Write(data);
+            }
+        }};
+
+        reference.Write(data0).Write(data1);
+        write_normal(mixed, data0, b);
+        write_normal(mixed, data1, u8 & 1);
+        assert(mixed.Finalize() == reference.Finalize());
+
+        reference.WriteJumbo(u256).Write(data0);
+        assert(mixed.Hash(u256, data0) == reference.Finalize());
+    }
     (void)ToLower(ch);
     (void)ToUpper(ch);
     {
diff --git a/src/test/hash_tests.cpp b/src/test/hash_tests.cpp
index 1b541939..63ef4f5e 100644
--- a/src/test/hash_tests.cpp
+++ b/src/test/hash_tests.cpp
@@ -30,6 +30,29 @@ static uint64_t CalculateSipHash24(const UniValue& input, uint64_t k0, uint64_t
     return result;
 }
 
+static uint64_t CalculateSipHash13UJ(const UniValue& input, uint64_t k0, uint64_t k1, bool normal_as_jumbo)
+{
+    SipHasher13UJ hasher{k0, k1};
+    for (auto& value : input.getValues()) {
+        const auto block{ParseHex(value.get_str())};
+        if (block.size() == sizeof(uint64_t)) {
+            if (!normal_as_jumbo) {
+                hasher.Write(ReadLE64(block.data()));
+            } else {
+                uint256 data256{};
+                WriteLE64(data256.data(), ReadLE64(block.data()));
+                hasher.WriteJumbo(data256);
+            }
+        } else {
+            BOOST_REQUIRE_EQUAL(block.size(), uint256::size());
+            hasher.WriteJumbo(uint256{block});
+        }
+    }
+    const uint64_t result{hasher.Finalize()};
+    BOOST_CHECK_EQUAL(hasher.Finalize(), result);
+    return result;
+}
+
 BOOST_AUTO_TEST_CASE(murmurhash3)
 {
 
@@ -162,6 +185,18 @@ BOOST_AUTO_TEST_CASE(siphash_test_vectors)
             const auto extra{ParseHex(input[1].get_str())};
             BOOST_CHECK_EQUAL(PresaltedSipHasher(k0, k1)(FromHex256(input[0]), ReadLE32(extra.data())), expected24);
         }
+        if (auto& expected_value{test["expected"]["siphash13uj"]}; !expected_value.isNull()) {
+            const uint64_t expected13uj{FromHex64(expected_value)};
+            BOOST_CHECK_EQUAL(CalculateSipHash13UJ(input, k0, k1, /*normal_as_jumbo=*/false), expected13uj);
+            BOOST_CHECK_EQUAL(CalculateSipHash13UJ(input, k0, k1, /*normal_as_jumbo=*/true), expected13uj);
+            const SipHasher13UJ fixed_hasher{k0, k1};
+            if (hash_only) {
+                BOOST_CHECK_EQUAL(fixed_hasher.Hash(FromHex256(input[0])), expected13uj);
+            } else if (hash_extra && HasByteLength(input[1], sizeof(uint64_t))) {
+                const auto extra{ParseHex(input[1].get_str())};
+                BOOST_CHECK_EQUAL(fixed_hasher.Hash(FromHex256(input[0]), ReadLE64(extra.data())), expected13uj);
+            }
+        }
     }
 }

Risk score

Why this scored 15/100

Our methodology →

Potential impact 0/30

Exploitability 0/25

Stealth signal 0/15

Affected reach 0/15

Confidence 10/10

Evidence quality 5/5

Human-validated context

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What the developer wrote

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Security signals we found

Evidence from the diff

Changed components

Why this scored 15/100

Community notes

Related watches

Merge bitcoin/bitcoin#35928: doc: mention -DWITH_ZMQ=ON in macOS build guide

Merge bitcoin/bitcoin#35482: fuzz: exercise the transaction-handling path in process_message(s)

Merge bitcoin/bitcoin#35914: test, fuzz: Remove unused variables