fix!: fix opcode signatures #5966
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Description --- Fixes opcode signatures to mitigate security issues. Closes tari-project#5817. Motivation and Context --- Handling of signature-related opcodes introduces security issues related to signature forgery as described in tari-project#5817. This PR changes how signature-related message data is handled. Because of the new design, signature arithmetic support is removed. How Has This Been Tested? --- Existing tests pass or have been updated to reflect the new design. What process can a PR reviewer use to test or verify this change? --- Check that the new design matches the intent of the signature-related opcodes. Check that test modifications are correct. BREAKING CHANGE: Changes how some opcodes are processed, which renders some existing scripts and transactions invalid.
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Description
Fixes opcode signatures to mitigate security issues.
Closes #5817.
Motivation and Context
Handling of signature-related opcodes introduces security issues related to signature forgery as described in #5817. This PR changes how signature-related message data is handled. Because of the new design, signature arithmetic support is removed.
How Has This Been Tested?
Existing tests pass or have been updated to reflect the new design.
What process can a PR reviewer use to test or verify this change?
Check that the new design matches the intent of the signature-related opcodes. Check that test modifications are correct.
BREAKING CHANGE: Changes how some opcodes are processed, which renders some existing scripts and transactions invalid.