Talk:OP CHECKSIG: Difference between revisions
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// or an extra one at the end, this prevents all those possible incompatibilities. | // or an extra one at the end, this prevents all those possible incompatibilities. | ||
In step 2, only OP_CODESEPARATOR before OP_CHECKSIG are removed. In step OP_CODESEPARATOR after OP_CHECKSIG are also removed. | In step 2, only OP_CODESEPARATOR before OP_CHECKSIG are removed. In step OP_CODESEPARATOR after OP_CHECKSIG are also removed. | ||
= More info = | |||
Maybe add short description from here [[Contracts#Theory]] for all SIGHASH_*? [[User:Mad|Mad]] | |||
Revision as of 23:55, 7 February 2012
Redundant step?
Under "How it works", we have steps 2 and 6:
- 2. A new subscript is created from the instruction from the most recent OP_CODESEPARATOR to the end of the script. If there is no OP_CODESEPARATOR the entire script becomes the subscript (hereby referred to as subScript)
- 6. All OP_CODESEPARATORS are removed from subScript
However, doesn't step 6 seem redundant? Vegard
Answer: (sirk390)
The comment for step 6. in the bitcoin sources help to understand this (script.cpp:882)
// In case concatenating two scripts ends up with two codeseparators,
// or an extra one at the end, this prevents all those possible incompatibilities.
In step 2, only OP_CODESEPARATOR before OP_CHECKSIG are removed. In step OP_CODESEPARATOR after OP_CHECKSIG are also removed.
More info
Maybe add short description from here Contracts#Theory for all SIGHASH_*? Mad