Generating accounts with defined "internal" hex digits using cast wallet vanity

[radeksvarz]

Component

Cast

Describe the feature you would like

cast wallet vanity has --start-with and --end-with options

That is useful for gas savings when starting / ending with zeros.

Another use case emerged - the vanity addresses with "labels" , ie. some specific hex digits - like 0xdead

The problem is that starting/ending with these "labels" has impact on the security when phishing actors try to mimic the accounts. ( The root cause is that the wallets are presenting the account with 4 starting and 4 ending hex digits.)

The proposal is to add option --having (<what>, <position>), where are the desired hex digits and is the starting 0 based position of these hex digits in the account address.

Examples:

cast wallet vanity --having (0xbeef, 4)
Address: 0xCe11beef58de187b01804dBC35393BEa04EB3405

Additional context

No response

[DaniPopes]

Maybe it should be documented better, but you can already achieve this with a regex:

$ cast wallet vanity --starts-with '.{4}beef'
Starting to generate vanity address...
Successfully found vanity address in 0 seconds.
Address: 0x6c81beEf97f0B1b3bab68c6465033BA8FD854DA1
Private Key: 0x59e00586d198ce469ee2c6f31a1c21e806c03eb0bccb795bb39dd0e5d86830ca

[radeksvarz]

Maybe it should be documented better, but you can already achieve this with a regex:

$ cast wallet vanity --starts-with '.{4}beef'

This is even better. I already wanted to suggest pattern like templating.

Can we reopen this ticket for the doc improvement? (Just checked the book, indeed it is not there.)