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Groth’16 trapdoor for simulator

In the zero knowledge definition of the Groth16 scheme (https://eprint.iacr.org/2016/260.pdf) [Section 2.2], why would the simulator be allowed a trap-door in set up? The trap-door information contains the toxic waste that should be destroyed by the set up. In another word, if the simulator (a.k.a modeling a passive attacker) learns the toxic waste, would it hurt the security of the protocol?

Where can I see the requirements for creating a password in Bitcion core?

In 2017 I created a wallet in Bitcoin core and protected it with a password. The password contains characters like ".,;". When I decided to send my bitcoins the wallet wrote an error "invalid password". Where can I see the specification/specification/clear requirements for the password to be created? I have a suspicion that the use::Listen

In 2017 I created a wallet in Bitcoin core and protected it with a password. The password contains characters like ".,;". When I decided to send my bitcoins the wallet wrote an error "invalid password". Where can I see the specification/specification/clear requirements for the password to be created? I have a suspicion that the use of special characters caused problems with the wallet. Thanks in advance for the answers.

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Groth’16 trapdoor for simulator

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