Change Details

In preparation for overloading CHECKSIG et al to accept Schnorr signatures, this changes VerifySignature so that it has knowledge of SCRIPT_ flags. The sigcache code (which memoizes VerifySignature positive results) has been upgraded in accordance. In order that the cache does not fill up with duplicate entries and cache misses occur due to distinct policy/consensus flagsets, I have also added an explicit flag-invariants masking so that irrelevant flag permutations can be ignored. The order of parameters in sigcache's internal ComputeEntry has been also changed to mirror VerifySignature, as well as order of hashing.

In preparation for overloading CHECKSIG et al to accept Schnorr signatures, this changes VerifySignature so that it has knowledge of SCRIPT_ flags. The sigcache code (which memoizes VerifySignature positive results) has been upgraded in accordance. In order that the cache does not fill up with duplicate entries and cache misses occur due to distinct policy/consensus flagsets, I have also added an explicit flag-invariants masking so that irrelevant flag permutations can be ignored. The order of parameters in sigcache's internal ComputeEntry has been also changed to mirror the order in VerifySignature, as well as order of hashing.

In preparation for overloading CHECKSIG et al to accept Schnorr signatures, this changes VerifySignature so that it has knowledge of SCRIPT_ flags. The sigcache code (which memoizes VerifySignature positive results) has been upgraded in accordance. In order that the cache does not fill up with duplicate entries and cache misses occur due to distinct policy/consensus flagsets, I have also added an explicit flag-invariants masking so that irrelevant flag permutations can be ignored. The order of parameters in sigcache's internal ComputeEntry has been also changed to mirror the order in VerifySignature, as well as order of hashing.