Feature Request: zkey new flag for using crypto.randomBytes

[kumavis]

while user generated entropy is a nice option, using the platform's source of secure entropy would be nice for non-interactive usage

[weijiekoh]

Looks like snarkjs already uses crypto.randomBytes in addition to user-provided entropy:

https://github.com/iden3/snarkjs/blob/master/src/zkey_contribute.js#L45

https://github.com/iden3/snarkjs/blob/master/src/misc.js#L123

Non-interactive usage can be achieved using a shell pipe:

const cmd = `node ./node_modules/snarkjs/build/cli.cjs zkey contribute ${o} ${n}`
const out = shelljs.exec(`echo ${currentEntropy} | ${cmd}`, { silent: true })

https://github.com/appliedzkp/multisetups/blob/master/ts/contribute.ts#L116-L117

Hope this helps!

[phated]

Going to close this because (as stated above) it should already be supported. Please re-open if it isn't true.