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author | Antoine Poinsot <darosior@protonmail.com> | 2022-04-15 14:03:37 +0200 |
---|---|---|
committer | Antoine Poinsot <darosior@protonmail.com> | 2022-04-18 16:03:29 +0200 |
commit | 74175941870347458ba8a0074f88b22cb94d0235 (patch) | |
tree | d1745d112fafeda3b4d68b3611331e5389bb1a86 /src/test/miniscript_tests.cpp | |
parent | e14f0fa6a346afecbb1d5470aef5226a8cc33e57 (diff) | |
download | bitcoin-74175941870347458ba8a0074f88b22cb94d0235.tar.xz |
miniscript: the 'd:' wrapper must not be 'u'
The value it leaves on the stack depends on the last element on the
stack. However, we can't make sure this element is OP_1 (which would
give us the 'u' property) without the MINIMALIF rule.
MINIMALIF is only policy for P2WSH, therefore giving 'd:' the 'u'
property breaks consensus soundness: it makes it possible (by consensus
but not policy) for instance to satisfy a thresh() without satisfying
at least k of its subs.
This bug was found and reported by Andrew Poelstra.
Diffstat (limited to 'src/test/miniscript_tests.cpp')
-rw-r--r-- | src/test/miniscript_tests.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/test/miniscript_tests.cpp b/src/test/miniscript_tests.cpp index 949d30dfd5..930582ea24 100644 --- a/src/test/miniscript_tests.cpp +++ b/src/test/miniscript_tests.cpp @@ -224,7 +224,7 @@ BOOST_AUTO_TEST_CASE(fixed_tests) Test("and_b(hash256(32ba476771d01e37807990ead8719f08af494723de1d228f2c2c07cc0aa40bac),a:and_b(hash256(131772552c01444cd81360818376a040b7c3b2b7b0a53550ee3edde216cec61b),a:older(1)))", "82012088aa2032ba476771d01e37807990ead8719f08af494723de1d228f2c2c07cc0aa40bac876b82012088aa20131772552c01444cd81360818376a040b7c3b2b7b0a53550ee3edde216cec61b876b51b26c9a6c9a", TESTMODE_VALID | TESTMODE_NONMAL, 15, 3); Test("thresh(2,multi(2,03a0434d9e47f3c86235477c7b1ae6ae5d3442d49b1943c2b752a68e2a47e247c7,036d2b085e9e382ed10b69fc311a03f8641ccfff21574de0927513a49d9a688a00),a:multi(1,036d2b085e9e382ed10b69fc311a03f8641ccfff21574de0927513a49d9a688a00),ac:pk_k(022f01e5e15cca351daff3843fb70f3c2f0a1bdd05e5af888a67784ef3e10a2a01))", "522103a0434d9e47f3c86235477c7b1ae6ae5d3442d49b1943c2b752a68e2a47e247c721036d2b085e9e382ed10b69fc311a03f8641ccfff21574de0927513a49d9a688a0052ae6b5121036d2b085e9e382ed10b69fc311a03f8641ccfff21574de0927513a49d9a688a0051ae6c936b21022f01e5e15cca351daff3843fb70f3c2f0a1bdd05e5af888a67784ef3e10a2a01ac6c935287", TESTMODE_VALID | TESTMODE_NONMAL | TESTMODE_NEEDSIG, 13, 7); Test("and_n(sha256(d1ec675902ef1633427ca360b290b0b3045a0d9058ddb5e648b4c3c3224c5c68),t:or_i(v:older(4252898),v:older(144)))", "82012088a820d1ec675902ef1633427ca360b290b0b3045a0d9058ddb5e648b4c3c3224c5c68876400676303e2e440b26967029000b269685168", TESTMODE_VALID, 14, 3); - Test("or_d(d:and_v(v:older(4252898),v:older(4252898)),sha256(38df1c1f64a24a77b23393bca50dff872e31edc4f3b5aa3b90ad0b82f4f089b6))", "766303e2e440b26903e2e440b26968736482012088a82038df1c1f64a24a77b23393bca50dff872e31edc4f3b5aa3b90ad0b82f4f089b68768", TESTMODE_VALID, 14, 3); + Test("or_d(nd:and_v(v:older(4252898),v:older(4252898)),sha256(38df1c1f64a24a77b23393bca50dff872e31edc4f3b5aa3b90ad0b82f4f089b6))", "766303e2e440b26903e2e440b2696892736482012088a82038df1c1f64a24a77b23393bca50dff872e31edc4f3b5aa3b90ad0b82f4f089b68768", TESTMODE_VALID, 15, 3); Test("c:and_v(or_c(sha256(9267d3dbed802941483f1afa2a6bc68de5f653128aca9bf1461c5d0a3ad36ed2),v:multi(1,02c44d12c7065d812e8acf28d7cbb19f9011ecd9e9fdf281b0e6a3b5e87d22e7db)),pk_k(03acd484e2f0c7f65309ad178a9f559abde09796974c57e714c35f110dfc27ccbe))", "82012088a8209267d3dbed802941483f1afa2a6bc68de5f653128aca9bf1461c5d0a3ad36ed28764512102c44d12c7065d812e8acf28d7cbb19f9011ecd9e9fdf281b0e6a3b5e87d22e7db51af682103acd484e2f0c7f65309ad178a9f559abde09796974c57e714c35f110dfc27ccbeac", TESTMODE_VALID | TESTMODE_NEEDSIG, 8, 3); Test("c:and_v(or_c(multi(2,036d2b085e9e382ed10b69fc311a03f8641ccfff21574de0927513a49d9a688a00,02352bbf4a4cdd12564f93fa332ce333301d9ad40271f8107181340aef25be59d5),v:ripemd160(1b0f3c404d12075c68c938f9f60ebea4f74941a0)),pk_k(03fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556))", "5221036d2b085e9e382ed10b69fc311a03f8641ccfff21574de0927513a49d9a688a002102352bbf4a4cdd12564f93fa332ce333301d9ad40271f8107181340aef25be59d552ae6482012088a6141b0f3c404d12075c68c938f9f60ebea4f74941a088682103fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556ac", TESTMODE_VALID | TESTMODE_NONMAL | TESTMODE_NEEDSIG, 10, 6); Test("and_v(andor(hash256(8a35d9ca92a48eaade6f53a64985e9e2afeb74dcf8acb4c3721e0dc7e4294b25),v:hash256(939894f70e6c3a25da75da0cc2071b4076d9b006563cf635986ada2e93c0d735),v:older(50000)),after(499999999))", "82012088aa208a35d9ca92a48eaade6f53a64985e9e2afeb74dcf8acb4c3721e0dc7e4294b2587640350c300b2696782012088aa20939894f70e6c3a25da75da0cc2071b4076d9b006563cf635986ada2e93c0d735886804ff64cd1db1", TESTMODE_VALID, 14, 3); @@ -263,6 +263,15 @@ BOOST_AUTO_TEST_CASE(fixed_tests) BOOST_CHECK(ms_multi); BOOST_CHECK_EQUAL(ms_multi->GetOps(), 4); // 3 pubkeys + CMS BOOST_CHECK_EQUAL(ms_multi->GetStackSize(), 3); // 1 sig + dummy elem + script push + // The 'd:' wrapper leaves on the stack what was DUP'ed at the beginning of its execution. + // Since it contains an OP_IF just after on the same element, we can make sure that the element + // in question must be OP_1 if OP_IF enforces that its argument must only be OP_1 or the empty + // vector (since otherwise the execution would immediately fail). This is the MINIMALIF rule. + // Unfortunately, this rule is consensus for Taproot but only policy for P2WSH. Therefore we can't + // (for now) have 'd:' be 'u'. This tests we can't use a 'd:' wrapper for a thresh, which requires + // its subs to all be 'u' (taken from https://github.com/rust-bitcoin/rust-miniscript/discussions/341). + const auto ms_minimalif = miniscript::FromString("thresh(3,c:pk_k(03d30199d74fb5a22d47b6e054e2f378cedacffcb89904a61d75d0dbd407143e65),sc:pk_k(03fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556),sc:pk_k(0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798),sdv:older(32))", CONVERTER); + BOOST_CHECK(!ms_minimalif); // Timelock tests Test("after(100)", "?", TESTMODE_VALID | TESTMODE_NONMAL); // only heightlock |