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Merge bitcoin/bitcoin#34295: test: Improve STRICTENC/DERSIG unit tests

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4dfb6eef70 test: Add DERSIG tests to script_tests (billymcbip)
884978f389 test: Fix a STRICTENC test in script_tests (billymcbip)
527e8ca7b5 test: Remove outdated comment in script_tests (billymcbip)

Pull request description:

  1. Remove a comment referencing a file that no longer exists in the codebase: `script_invalid.json`.

  2. Fix a test that isn't implemented as intended. The idea is to test execution order by providing a signature that would cause script failure when parsed. An empty signature does not cause script failure in `CHECKMULTISIG`. Use `OP_1` for the second signature instead of `OP_0`.

  3. Copy existing `STRICTENC` tests and change the flag to `DERSIG`. `DERSIG` is a consensus flag (unlike `STRICTENC`), so it'd be good to have dedicated test cases.

  `script_tests` pass on my end.

ACKs for top commit:
  darosior:
    reACK 4dfb6eef70
  sipa:
    ACK 4dfb6eef70

Tree-SHA512: aea4aa5199530804561e9f597f69d6cffd7a40d4830919f9371fe97e4d04d8f10e8ed29b91e65e007a3f6e3a38e2881f88dff25831e741ad7592a12ed02b801a
This commit is contained in:
merge-script
2026-02-04 09:37:56 +00:00
parent 3532e24213 4dfb6eef70
commit 1e64aeaaec
1 changed files with 29 additions and 8 deletions
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37
src/test/data/script_tests.json
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@@ -680,18 +680,19 @@
["0 0x02 0x0000 0", "CHECKMULTISIGVERIFY 1", "", "OK"],
["While not really correctly DER encoded, the empty signature is allowed by"],
["STRICTENC to provide a compact way to provide a deliberately invalid signature."],
["STRICTENC/DERSIG to provide a compact way to provide a deliberately invalid signature."],
["0", "0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 CHECKSIG NOT", "STRICTENC", "OK"],
["0", "0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 CHECKSIG NOT", "DERSIG", "OK"],
["0 0", "1 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 1 CHECKMULTISIG NOT", "STRICTENC", "OK"],
["0 0", "1 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 1 CHECKMULTISIG NOT", "DERSIG", "OK"],
["CHECKMULTISIG evaluation order tests. CHECKMULTISIG evaluates signatures and"],
["pubkeys in a specific order, and will exit early if the number of signatures"],
["left to check is greater than the number of keys left. As STRICTENC fails the"],
["left to check is greater than the number of keys left. As STRICTENC/DERSIG fails the"],
["script when it reaches an invalidly encoded signature or pubkey, we can use it"],
["to test the exact order in which signatures and pubkeys are evaluated by"],
["distinguishing CHECKMULTISIG returning false on the stack and the script as a"],
["whole failing."],
["See also the corresponding inverted versions of these tests in script_invalid.json"],
[
"0 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501",
"2 0 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 2 CHECKMULTISIG NOT",
@@ -699,10 +700,16 @@
"2-of-2 CHECKMULTISIG NOT with the second pubkey invalid, and both signatures validly encoded. Valid pubkey fails, and CHECKMULTISIG exits early, prior to evaluation of second invalid pubkey."
],
[
"0 0 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501",
"0 1 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501",
"2 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 2 CHECKMULTISIG NOT",
"STRICTENC", "OK",
"2-of-2 CHECKMULTISIG NOT with both pubkeys valid, but second signature invalid. Valid pubkey fails, and CHECKMULTISIG exits early, prior to evaluation of second invalid signature."
"2-of-2 CHECKMULTISIG NOT with both pubkeys valid, but second signature invalid. Valid pubkey fails, and CHECKMULTISIG exits early, prior to evaluation of second invalid signature (STRICTENC enabled)."
],
[
"0 1 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501",
"2 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 2 CHECKMULTISIG NOT",
"DERSIG", "OK",
"2-of-2 CHECKMULTISIG NOT with both pubkeys valid, but second signature invalid. Valid pubkey fails, and CHECKMULTISIG exits early, prior to evaluation of second invalid signature (DERSIG enabled)."
],
["Increase test coverage for DERSIG"],
@@ -1232,7 +1239,7 @@
["Order of CHECKMULTISIG evaluation tests, inverted by swapping the order of"],
["pubkeys/signatures so they fail due to the STRICTENC rules on validly encoded"],
["pubkeys/signatures so they fail due to the STRICTENC/DERSIG rules on validly encoded"],
["signatures and pubkeys."],
[
"0 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501",
@@ -1246,14 +1253,28 @@
"2 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 2 CHECKMULTISIG NOT",
"STRICTENC",
"SIG_DER",
"2-of-2 CHECKMULTISIG NOT with both pubkeys valid, but first signature invalid."
"2-of-2 CHECKMULTISIG NOT with both pubkeys valid, but first signature invalid (STRICTENC enabled)."
],
[
"0 0x47 0x3044022044dc17b0887c161bb67ba9635bf758735bdde503e4b0a0987f587f14a4e1143d022009a215772d49a85dae40d8ca03955af26ad3978a0ff965faa12915e9586249a501 1",
"2 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 0x21 0x02865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac0 2 CHECKMULTISIG NOT",
"DERSIG",
"SIG_DER",
"2-of-2 CHECKMULTISIG NOT with both pubkeys valid, but first signature invalid (DERSIG enabled)."
],
[
"0 0x47 0x304402205451ce65ad844dbb978b8bdedf5082e33b43cae8279c30f2c74d9e9ee49a94f802203fe95a7ccf74da7a232ee523ef4a53cb4d14bdd16289680cdb97a63819b8f42f01 0x46 0x304402205451ce65ad844dbb978b8bdedf5082e33b43cae8279c30f2c74d9e9ee49a94f802203fe95a7ccf74da7a232ee523ef4a53cb4d14bdd16289680cdb97a63819b8f42f",
"2 0x21 0x02a673638cb9587cb68ea08dbef685c6f2d2a751a8b3c6f2a7e9a4999e6e4bfaf5 0x21 0x02a673638cb9587cb68ea08dbef685c6f2d2a751a8b3c6f2a7e9a4999e6e4bfaf5 0x21 0x02a673638cb9587cb68ea08dbef685c6f2d2a751a8b3c6f2a7e9a4999e6e4bfaf5 3 CHECKMULTISIG",
"P2SH,STRICTENC",
"SIG_DER",
"2-of-3 with one valid and one invalid signature due to parse error, nSigs > validSigs"
"2-of-3 with one valid and one invalid signature due to parse error, nSigs > validSigs (STRICTENC enabled)."
],
[
"0 0x47 0x304402205451ce65ad844dbb978b8bdedf5082e33b43cae8279c30f2c74d9e9ee49a94f802203fe95a7ccf74da7a232ee523ef4a53cb4d14bdd16289680cdb97a63819b8f42f01 0x46 0x304402205451ce65ad844dbb978b8bdedf5082e33b43cae8279c30f2c74d9e9ee49a94f802203fe95a7ccf74da7a232ee523ef4a53cb4d14bdd16289680cdb97a63819b8f42f",
"2 0x21 0x02a673638cb9587cb68ea08dbef685c6f2d2a751a8b3c6f2a7e9a4999e6e4bfaf5 0x21 0x02a673638cb9587cb68ea08dbef685c6f2d2a751a8b3c6f2a7e9a4999e6e4bfaf5 0x21 0x02a673638cb9587cb68ea08dbef685c6f2d2a751a8b3c6f2a7e9a4999e6e4bfaf5 3 CHECKMULTISIG",
"P2SH,DERSIG",
"SIG_DER",
"2-of-3 with one valid and one invalid signature due to parse error, nSigs > validSigs (DERSIG enabled)."
],
["Increase DERSIG test coverage"],