This converts the CalcMultiSigStats function to make use of the new
extractMultisigScriptDetails function instead of the far less efficient
parseScript thereby significantly optimizing the function.
The tests are also updated accordingly.
The following is a before and after comparison of analyzing a standard
multisig script:
benchmark old ns/op new ns/op delta
---------------------------------------------------------------
BenchmarkCalcMultiSigStats 972 79.5 -91.82%
benchmark old allocs new allocs delta
---------------------------------------------------------------
BenchmarkCalcMultiSigStats 1 0 -100.00%
benchmark old bytes new bytes delta
---------------------------------------------------------------
BenchmarkCalcMultiSigStats 2304 0 -100.00%
This converts CalcScriptInfo and dependent expectedInputs to make use of
the new script tokenizer as well as several of the other recently added
raw script analysis functions in order to remove the reliance on parsed
opcodes as a step towards utlimately removing them altogether.
It is worth noting that this has the side effect of significantly
optimizing the function as well, however, since it is deprecated, no
benchmarks are provided.
This converts the ExtractCoinbaseNullData function to make use of the
new tokenizer instead of the far less efficient parseScript thereby
significantly optimizing the function.
The following is a before and after comparison of analyzing a typical
coinbase script:
benchmark old ns/op new ns/op delta
-------------------------------------------------------------------
BenchmarkExactCoinbaseNullData 227 31.0 -86.34%
benchmark old allocs new allocs delta
-------------------------------------------------------------------
BenchmarkExactCoinbaseNullData 1 0 -100.00%
benchmark old bytes new bytes delta
-------------------------------------------------------------------
BenchmarkExactCoinbaseNullData 448 0 -100.00%
This converts the ContainsStakeOpCodes function to make use of the new
tokenizer instead of the far less efficient parseScript thereby
significantly optimizing the function.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
------------------------------------------------------------------
BenchmarkContainsStakeOpCodes 134599 968 -99.28%
benchmark old allocs new allocs delta
------------------------------------------------------------------
BenchmarkContainsStakeOpCodes 1 0 -100.00%
benchmark old bytes new bytes delta
------------------------------------------------------------------
BenchmarkContainsStakeOpCodes 466944 0 -100.00%
This completes the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of stake change scripts to use
raw script analysis by introducing a new function named
isStakeChangeScript which makes use of the recently added
extractStakePubKeyHash and extractStakeScriptHash functions and removes
the script parsing fallback from the typeOfScript function since this is
the final case.
The following is a before and after comparison of analyzing a large
script for both the stake change script change and the overall
GetScriptClass function which relies on the now fully converted
typeOfScript function:
benchmark old ns/op new ns/op delta
-----------------------------------------------------------------
BenchmarkIsStakeChangeScript 133810 4.39 -100.00%
BenchmarkGetScriptClass 145001 62.9 -99.96%
benchmark old allocs new allocs delta
-----------------------------------------------------------------
BenchmarkIsStakeChangeScript 1 0 -100.00%
BenchmarkGetScriptClass 1 0 -100.00%
benchmark old bytes new bytes delta
-----------------------------------------------------------------
BenchmarkIsStakeChangeScript 466944 0 -100.00%
BenchmarkGetScriptClass 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of stake revocation scripts to
use raw script analysis.
In order to accomplish this, it introduces a new function named
isStakeGenScript which makes of the recently added
extractStakePubKeyHash and extractStakeScriptHash functions.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
---------------------------------------------------------------------
BenchmarkIsStakeRevocationScript 117699 4.58 -100.00%
benchmark old allocs new allocs delta
---------------------------------------------------------------------
BenchmarkIsStakeRevocationScript 1 0 -100.00%
benchmark old bytes new bytes delta
---------------------------------------------------------------------
BenchmarkIsStakeRevocationScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of stake generation scripts to
use raw script analysis.
In order to accomplish this, it introduces a new function named
isStakeGenScript which makes of the recently added
extractStakePubKeyHash and extractStakeScriptHash functions.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
---------------------------------------------------------------------
BenchmarkIsStakeGenerationScript 121043 4.26 -100.00%
benchmark old allocs new allocs delta
---------------------------------------------------------------------
BenchmarkIsStakeGenerationScript 1 0 -100.00%
benchmark old bytes new bytes delta
---------------------------------------------------------------------
BenchmarkIsStakeGenerationScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of stake submission scripts to
use raw script analysis.
In order to accomplish this, it introduces three new functions. The first
one is named extractStakePubKeyHash and works with the raw script bytes
to simultaneously determine if the script is a stake-tagged
pay-to-pubkey-hash script tagged with a specified stake opcode, and in
the case it is, extract and return the hash. The second new function,
named extractStakeScriptHash, is similar except it detect a stake-tagged
pay-to-script-hash script tagged with a specified stake opcode.
Finally, the third function is named isStakeSubmissionScript and is
defined in terms of the former two functions.
The extract function approach was chosen because it is common for
callers to want to only extract relevant details from a script if the
script is of the specific type. Extracting those details requires
performing the exact same checks to ensure the script is of the correct
type, so it is more efficient to combine the two into one and define the
type determination in terms of the result so long as the extraction does
not require allocations.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
---------------------------------------------------------------------
BenchmarkIsStakeSubmissionScript 140308 4.20 -100.00%
benchmark old allocs new allocs delta
---------------------------------------------------------------------
BenchmarkIsStakeSubmissionScript 1 0 -100.00%
benchmark old bytes new bytes delta
---------------------------------------------------------------------
BenchmarkIsStakeSubmissionScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of nulldata scripts to use both raw
script analysis and the new tokenizer.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
--------------------------------------------------------------
BenchmarkIsNullDataScript 120800 3.81 -100.00%
benchmark old allocs new allocs delta
--------------------------------------------------------------
BenchmarkIsNullDataScript 1 0 -100.00%
benchmark old bytes new bytes delta
--------------------------------------------------------------
BenchmarkIsNullDataScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of pay-to-alt-pubkey-hash
scripts to use raw script analysis.
In order to accomplish this, it introduces two new functions. The first
one is named extractPubKeyHashAltDetails and works with the raw script
bytes to simultaneously determine if the script is a
pay-to-alt-pubkey-hash script, and in the case it is, extract and return
the hash and signature type. The second new function is named
isPubKeyHashAltScript and is defined in terms of the former.
The extract function approach was chosen because it is common for
callers to want to only extract relevant details from a script if the
script is of the specific type. Extracting those details requires
performing the exact same checks to ensure the script is of the correct
type, so it is more efficient to combine the two into one and define the
type determination in terms of the result so long as the extraction does
not require allocations.
It is important to note that this new implementation intentionally has a
semantic difference from the existing implementation in that it will now
only pass when one of two signature types currently supported by
consensus are specified whereas previously it would allow any single
byte data push.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
-------------------------------------------------------------------
BenchmarkIsAltPubKeyHashScript 107100 2.63 -100.00%
benchmark old allocs new allocs delta
-------------------------------------------------------------------
BenchmarkIsAltPubKeyHashScript 1 0 -100.00%
benchmark old bytes new bytes delta
-------------------------------------------------------------------
BenchmarkIsAltPubKeyHashScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of pay-to-pubkey-hash scripts
to use raw script analysis.
In order to accomplish this, it introduces two new functions. The first
one is named extractPubKeyHash and works with the raw script bytes
to simultaneously determine if the script is a pay-to-pubkey-hash script,
and in the case it is, extract and return the hash. The second new
function is named isPubKeyHashScript and is defined in terms of the
former.
The extract function approach was chosen because it is common for
callers to want to only extract relevant details from a script if the
script is of the specific type. Extracting those details requires
performing the exact same checks to ensure the script is of the correct
type, so it is more efficient to combine the two into one and define the
type determination in terms of the result so long as the extraction does
not require allocations.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
----------------------------------------------------------------
BenchmarkIsPubKeyHashScript 165903 0.64 -100.00%
benchmark old allocs new allocs delta
----------------------------------------------------------------
BenchmarkIsPubKeyHashScript 1 0 -100.00%
benchmark old bytes new bytes delta
----------------------------------------------------------------
BenchmarkIsPubKeyHashScript 466945 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of pay-to-alt-pubkey scripts to
use raw script analysis.
In order to accomplish this, it introduces two new functions. The first
one is named extractPubKeyAltDetails and works with the raw script bytes
to simultaneously determine if the script is a pay-to-alt-pubkey script,
and in the case it is, extract and return the relevant details. The
second new function is named isPubKeyAltScript and is defined in terms
of the former.
The extract function approach was chosen because it is common for
callers to want to only extract relevant details from a script if the
script is of the specific type. Extracting those details requires
performing the exact same checks to ensure the script is of the correct
type, so it is more efficient to combine the two into one and define the
type determination in terms of the result so long as the extraction does
not require allocations.
It is important to note that this new implementation intentionally
tightens the following semantics as compared to the existing
implementation:
- The signature type must now be one of the two supported types versus
allowing any single byte data push
- The public key must now be of the correct length for the given
signature type versus allowing any size up to 512 bytes
- The public key for schnorr secp256k1 pubkeys must now be a compressed
public key and adhere to the strict encoding requirements for them
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
---------------------------------------------------------------
BenchmarkIsAltPubKeyScript 143449 2.99 -100.00%
benchmark old allocs new allocs delta
---------------------------------------------------------------
BenchmarkIsAltPubKeyScript 1 0 -100.00%
benchmark old bytes new bytes delta
---------------------------------------------------------------
BenchmarkIsAltPubKeyScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, it converts the detection of pay-to-pubkey scripts to use
raw script analysis.
In order to accomplish this, it introduces four new functions:
extractCompressedPubKey, extractUncompressedPubKey, extractPubKey, and
isPubKeyScript. The extractPubKey function makes use of
extractCompressedPubKey and extractUncompressedPubKey to combine their
functionality as a convenience and isPubKeyScript is defined in terms of
extractPubKey.
The extractCompressedPubKey works with the raw script bytes to
simultaneously determine if the script is a pay-to-compressed-pubkey
script, and in the case it is, extract and return the raw compressed
pubkey bytes.
Similarly, the extractUncompressedPubKey works in the same way except it
determines if the script is a pay-to-uncompressed-pubkey script and
returns the raw uncompressed pubkey bytes in the case it is.
The extract function approach was chosen because it is common for
callers to want to only extract relevant details from a script if the
script is of the specific type. Extracting those details requires
performing the exact same checks to ensure the script is of the correct
type, so it is more efficient to combine the two into one and define the
type determination in terms of the result so long as the extraction does
not require allocations.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
------------------------------------------------------------
BenchmarkIsPubKeyScript 124749 4.01 -100.00%
benchmark old allocs new allocs delta
------------------------------------------------------------
BenchmarkIsPubKeyScript 1 0 -100.00%
benchmark old bytes new bytes delta
------------------------------------------------------------
BenchmarkIsPubKeyScript 466944 0 -100.00%
This continues the process of converting the typeOfScript function to
use a combination of raw script analysis and the new tokenizer instead
of the far less efficient parsed opcodes.
In particular, for this commit, since the ability to detect multisig
scripts via the new tokenizer is now available, the function is simply
updated to make use of it.
This begins the process of converting the typeOfScript function to use a
combination of raw script analysis and the new tokenizer instead of the
far less efficient parsed opcodes with the intent of significantly
optimizing the function.
In order to ease the review process, each script type will be converted
in a separate commit and the typeOfScript function will be updated such
that the script is only parsed as a fallback for the cases that are not
already converted to more efficient raw script variants.
In particular, for this commit, since the ability to detect
pay-to-script-hash via raw script analysis is now available, the
function is simply updated to make use of it.
This converts the typeOfScript function to accept a script version and
raw script instead of an array of internal parsed opcodes in order to
make it more flexible for raw script analysis.
Also, this adds a comment to CalcScriptInfo to call out the specific
version semantics and deprecates the function since nothing currently
uses it, and the relevant information can now be obtained by callers
more directly through the use of the new script tokenizer.
All other callers are updated accordingly.
This converts the GetPreciseSigOpCount function to use a combination of
raw script analysis and the new tokenizer instead of the far less
efficient parseScript thereby significantly optimizing the function.
In particular it uses the recently converted isScriptHashScript,
IsPushOnlyScript, and countSigOpsV0 functions along with the recently
added finalOpcodeData functions.
It also modifies the comment to explicitly call out the script version
semantics.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
------------------------------------------------------------------
BenchmarkGetPreciseSigOpCount 287939 1077 -99.63%
benchmark old allocs new allocs delta
------------------------------------------------------------------
BenchmarkGetPreciseSigOpCount 3 0 -100.00%
benchmark old bytes new bytes delta
------------------------------------------------------------------
BenchmarkGetPreciseSigOpCount 934657 0 -100.00%
This moves the check for non push-only pay-to-script-hash signature
scripts before the script parsing logic when creating a new engine
instance to avoid the extra overhead in the error case.
This modifies the check for whether or not a pay-to-script-hash
signature script is a push only script to make use of the new and more
efficient raw script function.
Also, since the script will have already been checked further above when
the ScriptVerifySigPushOnly flags is set, avoid checking it again in
that case.
This converts the IsPushOnlyScript function to make use of the new
tokenizer instead of the far less efficient parseScript thereby
significantly optimizing the function.
It also deprecates the isPushOnly function that requires opcodes in
favor of the new function and modifies the comment on IsPushOnlyScript
to explicitly call out the script version semantics.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
---------------------------------------------------------------
BenchmarkIsPayToScriptHash 139961 0.66 -100.00%
benchmark old allocs new allocs delta
---------------------------------------------------------------
BenchmarkIsPayToScriptHash 1 0 -100.00%
benchmark old bytes new bytes delta
---------------------------------------------------------------
BenchmarkIsPayToScriptHash 466944 0 -100.00%
This converts the isAnyKindOfScriptHash function to analyze the raw
script instead of requiring far less efficient parsed opcodes thereby
significantly optimizing the function.
Since the function relies on isStakeScriptHash to identify a stake
tagged pay-to-script-hash, and is the only consumer of it, this also
converts that function to analyze the raw script and renames it to
isStakeScriptHashScript for more consistent naming.
Finally, the tests are updated accordingly.
The following is a before and after comparison of analyzing a large
script:
benchmark old ns/op new ns/op delta
-------------------------------------------------------------------
BenchmarkIsAnyKindOfScriptHash 101249 3.83 -100.00%
benchmark old allocs new allocs delta
-------------------------------------------------------------------
BenchmarkIsAnyKindOfScriptHash 1 0 -100.00%
benchmark old bytes new bytes delta
-------------------------------------------------------------------
BenchmarkIsAnyKindOfScriptHash 466944 0 -100.00%
This adds tests to ensure the isAnyKindOfScriptHash function properly
identifies the four stake-tagged pay-to-script-hash possibilities in
addition to ensuring they are not misidentified as standard
pay-to-script-hash scripts.
