A fast and simple app that can generate function name to match your desired signature. For example, you have function doSomething(address) and need signature 0x12345678
$ cargo run --release -- -x 0x12345678 -f doSomething -p address
[2024-01-28T10:25:33Z INFO vanity_4b] Start searching vanity function name for doSomething(address)
[2024-01-28T10:35:59Z INFO vanity_4b::utils] Vanity function name found:
[2024-01-28T10:35:59Z INFO vanity_4b::utils] Signature: 0x12345678
[2024-01-28T10:35:59Z INFO vanity_4b::utils] Function name: doSomething533813959(address)
[2024-01-28T10:35:59Z INFO vanity_4b] Elapsed time 625 seconds
$ Or function doSomethingOther() and need signature 0xffffffff
$ cargo run --release -- -x 0xffffffff -f doSomethingOther
[2024-01-28T10:46:51Z INFO vanity_4b] Start searching vanity function name for doSomethingOther()
[2024-01-28T10:48:40Z INFO vanity_4b::utils] Vanity function name found:
[2024-01-28T10:48:40Z INFO vanity_4b::utils] Signature: 0xffffffff
[2024-01-28T10:48:40Z INFO vanity_4b::utils] Function name: doSomethingOther4611686018518633616()
[2024-01-28T10:48:40Z INFO vanity_4b] Elapsed time 109 seconds
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