Strict DER signatures are always enforced; remove the flag and code t…

…hat used it. Signed-off-by: Daira Hopwood <[email protected]>
warrenween · Jun 17, 2017 · de609b8 · de609b8
1 parent 3c985d2
commit de609b8
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Showing 9 changed files with 57 additions and 230 deletions.
diff --git a/src/main.cpp b/src/main.cpp
@@ -2078,19 +2078,9 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
                              REJECT_INVALID, "bad-txns-BIP30");
     }
 
-    unsigned int flags = SCRIPT_VERIFY_P2SH;
+    unsigned int flags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY;
 
-    // Start enforcing the DERSIG (BIP66) rules, for block.nVersion=3 blocks,
-    // when 75% of the network has upgraded:
-    if (block.nVersion >= 3) {
-        flags |= SCRIPT_VERIFY_DERSIG;
-    }
-
-    // Start enforcing CHECKLOCKTIMEVERIFY, (BIP65) for block.nVersion=4
-    // blocks, when 75% of the network has upgraded:
-    if (block.nVersion >= 4) {
-        flags |= SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY;
-    }
+    // DERSIG (BIP66) is also always enforced, but does not have a flag.
 
     CBlockUndo blockundo;
 

diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
@@ -191,7 +191,7 @@ bool static CheckSignatureEncoding(const valtype &vchSig, unsigned int flags, Sc
     if (vchSig.size() == 0) {
         return true;
     }
-    if ((flags & (SCRIPT_VERIFY_DERSIG | SCRIPT_VERIFY_LOW_S | SCRIPT_VERIFY_STRICTENC)) != 0 && !IsValidSignatureEncoding(vchSig)) {
+    if (!IsValidSignatureEncoding(vchSig)) {
         return set_error(serror, SCRIPT_ERR_SIG_DER);
     } else if ((flags & SCRIPT_VERIFY_LOW_S) != 0 && !IsLowDERSignature(vchSig, serror)) {
         // serror is set

diff --git a/src/script/interpreter.h b/src/script/interpreter.h
@@ -45,7 +45,8 @@ enum
     SCRIPT_VERIFY_STRICTENC = (1U << 1),
 
     // Passing a non-strict-DER signature to a checksig operation causes script failure (softfork safe, BIP62 rule 1)
-    SCRIPT_VERIFY_DERSIG    = (1U << 2),
+    // In Zcash this is required, and validation of non-strict-DER signatures is not implemented.
+    //SCRIPT_VERIFY_DERSIG    = (1U << 2),
 
     // Passing a non-strict-DER signature or one with S > order/2 to a checksig operation causes script failure
     // (softfork safe, BIP62 rule 5).

diff --git a/src/script/standard.h b/src/script/standard.h
@@ -31,9 +31,8 @@ extern unsigned nMaxDatacarrierBytes;
 /**
  * Mandatory script verification flags that all new blocks must comply with for
  * them to be valid. (but old blocks may not comply with) Currently just P2SH,
- * but in the future other flags may be added, such as a soft-fork to enforce
- * strict DER encoding.
- * 
+ * but in the future other flags may be added.
+ *
  * Failing one of these tests may trigger a DoS ban - see CheckInputs() for
  * details.
  */
@@ -45,7 +44,7 @@ static const unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH;
  * blocks and we must accept those blocks.
  */
 static const unsigned int STANDARD_SCRIPT_VERIFY_FLAGS = MANDATORY_SCRIPT_VERIFY_FLAGS |
-                                                         SCRIPT_VERIFY_DERSIG |
+                                                         // SCRIPT_VERIFY_DERSIG is always enforced
                                                          SCRIPT_VERIFY_STRICTENC |
                                                          SCRIPT_VERIFY_MINIMALDATA |
                                                          SCRIPT_VERIFY_NULLDUMMY |

diff --git a/src/script/zcashconsensus.h b/src/script/zcashconsensus.h
@@ -46,7 +46,6 @@ enum
 {
     zcashconsensus_SCRIPT_FLAGS_VERIFY_NONE                = 0,
     zcashconsensus_SCRIPT_FLAGS_VERIFY_P2SH                = (1U << 0), // evaluate P2SH (BIP16) subscripts
-    zcashconsensus_SCRIPT_FLAGS_VERIFY_DERSIG              = (1U << 2), // enforce strict DER (BIP66) compliance
     zcashconsensus_SCRIPT_FLAGS_VERIFY_CHECKLOCKTIMEVERIFY = (1U << 9), // enable CHECKLOCKTIMEVERIFY (BIP65)
 };
 

diff --git a/src/test/data/script_invalid.json b/src/test/data/script_invalid.json
@@ -523,14 +523,14 @@
 ],
 
 ["Increase DERSIG test coverage"],
-["0x4a 0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", "0 CHECKSIG NOT", "DERSIG", "Overly long signature is incorrectly encoded for DERSIG"],
-["0x25 0x30220220000000000000000000000000000000000000000000000000000000000000000000", "0 CHECKSIG NOT", "DERSIG", "Missing S is incorrectly encoded for DERSIG"],
-["0x27 0x3024021077777777777777777777777777777777020a7777777777777777777777777777777701", "0 CHECKSIG NOT", "DERSIG", "S with invalid S length is incorrectly encoded for DERSIG"],
-["0x27 0x302403107777777777777777777777777777777702107777777777777777777777777777777701", "0 CHECKSIG NOT", "DERSIG", "Non-integer R is incorrectly encoded for DERSIG"],
-["0x27 0x302402107777777777777777777777777777777703107777777777777777777777777777777701", "0 CHECKSIG NOT", "DERSIG", "Non-integer S is incorrectly encoded for DERSIG"],
-["0x17 0x3014020002107777777777777777777777777777777701", "0 CHECKSIG NOT", "DERSIG", "Zero-length R is incorrectly encoded for DERSIG"],
-["0x17 0x3014021077777777777777777777777777777777020001", "0 CHECKSIG NOT", "DERSIG", "Zero-length S is incorrectly encoded for DERSIG"],
-["0x27 0x302402107777777777777777777777777777777702108777777777777777777777777777777701", "0 CHECKSIG NOT", "DERSIG", "Negative S is incorrectly encoded for DERSIG"],
+["0x4a 0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", "0 CHECKSIG NOT", "", "Overly long signature is incorrectly encoded"],
+["0x25 0x30220220000000000000000000000000000000000000000000000000000000000000000000", "0 CHECKSIG NOT", "", "Missing S is incorrectly encoded"],
+["0x27 0x3024021077777777777777777777777777777777020a7777777777777777777777777777777701", "0 CHECKSIG NOT", "", "S with invalid S length is incorrectly encoded"],
+["0x27 0x302403107777777777777777777777777777777702107777777777777777777777777777777701", "0 CHECKSIG NOT", "", "Non-integer R is incorrectly encoded"],
+["0x27 0x302402107777777777777777777777777777777703107777777777777777777777777777777701", "0 CHECKSIG NOT", "", "Non-integer S is incorrectly encoded"],
+["0x17 0x3014020002107777777777777777777777777777777701", "0 CHECKSIG NOT", "", "Zero-length R is incorrectly encoded"],
+["0x17 0x3014021077777777777777777777777777777777020001", "0 CHECKSIG NOT", "", "Zero-length S is incorrectly encoded"],
+["0x27 0x302402107777777777777777777777777777777702108777777777777777777777777777777701", "0 CHECKSIG NOT", "", "Negative S is incorrectly encoded"],
 
 ["Automatically generated test cases"],
 [
@@ -578,140 +578,98 @@
 [
     "0x47 0x304402200060558477337b9022e70534f1fea71a318caf836812465a2509931c5e7c4987022078ec32bd50ac9e03a349ba953dfd9fe1c8d2dd8bdb1d38ddca844d3d5c78c11801",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "DERSIG",
+    "",
     "P2PK with too much R padding"
 ],
 [
     "0x48 0x304502202de8c03fc525285c9c535631019a5f2af7c6454fa9eb392a3756a4917c420edd02210046130bf2baf7cfc065067c8b9e33a066d9c15edcea9feb0ca2d233e3597925b401",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "DERSIG",
+    "",
     "P2PK with too much S padding"
 ],
 [
     "0x47 0x30440220d7a0417c3f6d1a15094d1cf2a3378ca0503eb8a57630953a9e2987e21ddd0a6502207a6266d686c99090920249991d3d42065b6d43eb70187b219c0db82e4f94d1a201",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "DERSIG",
+    "",
     "P2PK with too little R padding"
 ],
 [
     "0x47 0x30440220005ece1335e7f757a1a1f476a7fb5bd90964e8a022489f890614a04acfb734c002206c12b8294a6513c7710e8c82d3c23d75cdbfe83200eb7efb495701958501a5d601",
     "0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 CHECKSIG NOT",
-    "DERSIG",
+    "",
     "P2PK NOT with bad sig with too much R padding"
 ],
 [
     "0x47 0x30440220005ece1335e7f657a1a1f476a7fb5bd90964e8a022489f890614a04acfb734c002206c12b8294a6513c7710e8c82d3c23d75cdbfe83200eb7efb495701958501a5d601",
     "0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 CHECKSIG NOT",
     "",
-    "P2PK NOT with too much R padding but no DERSIG"
-],
-[
-    "0x47 0x30440220005ece1335e7f657a1a1f476a7fb5bd90964e8a022489f890614a04acfb734c002206c12b8294a6513c7710e8c82d3c23d75cdbfe83200eb7efb495701958501a5d601",
-    "0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 CHECKSIG NOT",
-    "DERSIG",
     "P2PK NOT with too much R padding"
 ],
 [
     "0x47 0x30440220d7a0417c3f6d1a15094d1cf2a3378ca0503eb8a57630953a9e2987e21ddd0a6502207a6266d686c99090920249991d3d42065b6d43eb70187b219c0db82e4f94d1a201",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "DERSIG",
-    "BIP66 example 1, with DERSIG"
-],
-[
-    "0x47 0x304402208e43c0b91f7c1e5bc58e41c8185f8a6086e111b0090187968a86f2822462d3c902200a58f4076b1133b18ff1dc83ee51676e44c60cc608d9534e0df5ace0424fc0be01",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG NOT",
     "",
-    "BIP66 example 2, without DERSIG"
+    "BIP66 example 1"
 ],
 [
     "0x47 0x304402208e43c0b91f7c1e5bc58e41c8185f8a6086e111b0090187968a86f2822462d3c902200a58f4076b1133b18ff1dc83ee51676e44c60cc608d9534e0df5ace0424fc0be01",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG NOT",
-    "DERSIG",
-    "BIP66 example 2, with DERSIG"
-],
-[
-    "0",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
     "",
-    "BIP66 example 3, without DERSIG"
+    "BIP66 example 2"
 ],
 [
     "0",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "DERSIG",
-    "BIP66 example 3, with DERSIG"
-],
-[
-    "1",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
     "",
-    "BIP66 example 5, without DERSIG"
+    "BIP66 example 3"
 ],
 [
     "1",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "DERSIG",
-    "BIP66 example 5, with DERSIG"
+    "",
+    "BIP66 example 5"
 ],
 [
     "1",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG NOT",
-    "DERSIG",
-    "BIP66 example 6, with DERSIG"
+    "",
+    "BIP66 example 6"
 ],
 [
     "0 0x47 0x30440220cae00b1444babfbf6071b0ba8707f6bd373da3df494d6e74119b0430c5db810502205d5231b8c5939c8ff0c82242656d6e06edb073d42af336c99fe8837c36ea39d501 0x47 0x3044022027c2714269ca5aeecc4d70edc88ba5ee0e3da4986e9216028f489ab4f1b8efce022022bd545b4951215267e4c5ceabd4c5350331b2e4a0b6494c56f361fa5a57a1a201",
     "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG",
-    "DERSIG",
-    "BIP66 example 7, with DERSIG"
-],
-[
-    "0 0x47 0x30440220b119d67d389315308d1745f734a51ff3ec72e06081e84e236fdf9dc2f5d2a64802204b04e3bc38674c4422ea317231d642b56dc09d214a1ecbbf16ecca01ed996e2201 0x47 0x3044022079ea80afd538d9ada421b5101febeb6bc874e01dde5bca108c1d0479aec339a4022004576db8f66130d1df686ccf00935703689d69cf539438da1edab208b0d63c4801",
-    "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG NOT",
     "",
-    "BIP66 example 8, without DERSIG"
+    "BIP66 example 7"
 ],
 [
     "0 0x47 0x30440220b119d67d389315308d1745f734a51ff3ec72e06081e84e236fdf9dc2f5d2a64802204b04e3bc38674c4422ea317231d642b56dc09d214a1ecbbf16ecca01ed996e2201 0x47 0x3044022079ea80afd538d9ada421b5101febeb6bc874e01dde5bca108c1d0479aec339a4022004576db8f66130d1df686ccf00935703689d69cf539438da1edab208b0d63c4801",
     "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG NOT",
-    "DERSIG",
-    "BIP66 example 8, with DERSIG"
-],
-[
-    "0 0 0x47 0x3044022081aa9d436f2154e8b6d600516db03d78de71df685b585a9807ead4210bd883490220534bb6bdf318a419ac0749660b60e78d17d515558ef369bf872eff405b676b2e01",
-    "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG",
     "",
-    "BIP66 example 9, without DERSIG"
+    "BIP66 example 8"
 ],
 [
     "0 0 0x47 0x3044022081aa9d436f2154e8b6d600516db03d78de71df685b585a9807ead4210bd883490220534bb6bdf318a419ac0749660b60e78d17d515558ef369bf872eff405b676b2e01",
     "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG",
-    "DERSIG",
-    "BIP66 example 9, with DERSIG"
+    "",
+    "BIP66 example 9"
 ],
 [
     "0 0 0x47 0x30440220da6f441dc3b4b2c84cfa8db0cd5b34ed92c9e01686de5a800d40498b70c0dcac02207c2cf91b0c32b860c4cd4994be36cfb84caf8bb7c3a8e4d96a31b2022c5299c501",
     "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG NOT",
-    "DERSIG",
-    "BIP66 example 10, with DERSIG"
-],
-[
-    "0 0x47 0x30440220cae00b1444babfbf6071b0ba8707f6bd373da3df494d6e74119b0430c5db810502205d5231b8c5939c8ff0c82242656d6e06edb073d42af336c99fe8837c36ea39d501 0",
-    "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG",
     "",
-    "BIP66 example 11, without DERSIG"
+    "BIP66 example 10"
 ],
 [
     "0 0x47 0x30440220cae00b1444babfbf6071b0ba8707f6bd373da3df494d6e74119b0430c5db810502205d5231b8c5939c8ff0c82242656d6e06edb073d42af336c99fe8837c36ea39d501 0",
     "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG",
-    "DERSIG",
-    "BIP66 example 11, with DERSIG"
+    "",
+    "BIP66 example 11"
 ],
 [
     "0x48 0x304402203e4516da7253cf068effec6b95c41221c0cf3a8e6ccb8cbf1725b562e9afde2c022054e1c258c2981cdfba5df1f46661fb6541c44f77ca0092f3600331abfffb12510101",
     "0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 CHECKSIG",
-    "DERSIG",
-    "P2PK with multi-byte hashtype, with DERSIG"
+    "",
+    "P2PK with multi-byte hashtype"
 ],
 [
     "0x48 0x304502203e4516da7253cf068effec6b95c41221c0cf3a8e6ccb8cbf1725b562e9afde2c022100ab1e3da73d67e32045a20e0b999e049978ea8d6ee5480d485fcf2ce0d03b2ef001",

diff --git a/src/test/data/script_valid.json b/src/test/data/script_valid.json
@@ -743,83 +743,17 @@
     "P2SH",
     "P2SH(2-of-3)"
 ],
-[
-    "0x47 0x304402200060558477337b9022e70534f1fea71a318caf836812465a2509931c5e7c4987022078ec32bd50ac9e03a349ba953dfd9fe1c8d2dd8bdb1d38ddca844d3d5c78c11801",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "",
-    "P2PK with too much R padding but no DERSIG"
-],
-[
-    "0x48 0x304502202de8c03fc525285c9c535631019a5f2af7c6454fa9eb392a3756a4917c420edd02210046130bf2baf7cfc065067c8b9e33a066d9c15edcea9feb0ca2d233e3597925b401",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "",
-    "P2PK with too much S padding but no DERSIG"
-],
-[
-    "0x47 0x30440220d7a0417c3f6d1a15094d1cf2a3378ca0503eb8a57630953a9e2987e21ddd0a6502207a6266d686c99090920249991d3d42065b6d43eb70187b219c0db82e4f94d1a201",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "",
-    "P2PK with too little R padding but no DERSIG"
-],
-[
-    "0x47 0x30440220005ece1335e7f757a1a1f476a7fb5bd90964e8a022489f890614a04acfb734c002206c12b8294a6513c7710e8c82d3c23d75cdbfe83200eb7efb495701958501a5d601",
-    "0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 CHECKSIG NOT",
-    "",
-    "P2PK NOT with bad sig with too much R padding but no DERSIG"
-],
-[
-    "0x47 0x30440220d7a0417c3f6d1a15094d1cf2a3378ca0503eb8a57630953a9e2987e21ddd0a6502207a6266d686c99090920249991d3d42065b6d43eb70187b219c0db82e4f94d1a201",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG",
-    "",
-    "BIP66 example 1, without DERSIG"
-],
-[
-    "0",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG NOT",
-    "",
-    "BIP66 example 4, without DERSIG"
-],
 [
     "0",
     "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG NOT",
-    "DERSIG",
-    "BIP66 example 4, with DERSIG"
-],
-[
-    "1",
-    "0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 CHECKSIG NOT",
-    "",
-    "BIP66 example 6, without DERSIG"
-],
-[
-    "0 0x47 0x30440220cae00b1444babfbf6071b0ba8707f6bd373da3df494d6e74119b0430c5db810502205d5231b8c5939c8ff0c82242656d6e06edb073d42af336c99fe8837c36ea39d501 0x47 0x3044022027c2714269ca5aeecc4d70edc88ba5ee0e3da4986e9216028f489ab4f1b8efce022022bd545b4951215267e4c5ceabd4c5350331b2e4a0b6494c56f361fa5a57a1a201",
-    "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG",
     "",
-    "BIP66 example 7, without DERSIG"
-],
-[
-    "0 0 0x47 0x30440220da6f441dc3b4b2c84cfa8db0cd5b34ed92c9e01686de5a800d40498b70c0dcac02207c2cf91b0c32b860c4cd4994be36cfb84caf8bb7c3a8e4d96a31b2022c5299c501",
-    "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG NOT",
-    "",
-    "BIP66 example 10, without DERSIG"
+    "BIP66 example 4"
 ],
 [
     "0 0x47 0x30440220b119d67d389315308d1745f734a51ff3ec72e06081e84e236fdf9dc2f5d2a64802204b04e3bc38674c4422ea317231d642b56dc09d214a1ecbbf16ecca01ed996e2201 0",
     "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG NOT",
     "",
-    "BIP66 example 12, without DERSIG"
-],
-[
-    "0 0x47 0x30440220b119d67d389315308d1745f734a51ff3ec72e06081e84e236fdf9dc2f5d2a64802204b04e3bc38674c4422ea317231d642b56dc09d214a1ecbbf16ecca01ed996e2201 0",
-    "2 0x21 0x038282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508 0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 2 CHECKMULTISIG NOT",
-    "DERSIG",
-    "BIP66 example 12, with DERSIG"
-],
-[
-    "0x48 0x304402203e4516da7253cf068effec6b95c41221c0cf3a8e6ccb8cbf1725b562e9afde2c022054e1c258c2981cdfba5df1f46661fb6541c44f77ca0092f3600331abfffb12510101",
-    "0x21 0x03363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640 CHECKSIG",
-    "",
-    "P2PK with multi-byte hashtype, without DERSIG"
+    "BIP66 example 12"
 ],
 [
     "0x48 0x304502203e4516da7253cf068effec6b95c41221c0cf3a8e6ccb8cbf1725b562e9afde2c022100ab1e3da73d67e32045a20e0b999e049978ea8d6ee5480d485fcf2ce0d03b2ef001",