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BlockApps bloc - extract private key
I am trying to use blockapps-js to invoke functions on my smart contract deployed in blockapps. Since I need the private key for it, I am looking at the app/users/admin/.json file. Problem is I cannot figure out which of these fields to use. Is it encPrivKeys.key? My code is not working yet, and am trying to figure out whether that is the cause.
{
"encSeed": {
"encStr": "...",
"iv": "...",
"salt": "..."
},
"encHdRootPriv": {
"encStr": "...",
"iv": "",
"salt": ""
},
"hdIndex": 1,
"encPrivKeys": {
"": {
"key": "...",
"iv": "",
"salt": ""
}
},
"addresses": ["..."],
"keyHash": "...",
"salt": {
"words": [, -,,],
"sigBytes": 16
}
}
{
"encSeed": {
"encStr": "...",
"iv": "...",
"salt": "..."
},
"encHdRootPriv": {
"encStr": "...",
"iv": "",
"salt": ""
},
"hdIndex": 1,
"encPrivKeys": {
"": {
"key": "...",
"iv": "",
"salt": ""
}
},
"addresses": ["..."],
"keyHash": "...",
"salt": {
"words": [, -,,],
"sigBytes": 16
}
}
Best Answer
-
andras Member Posts: 14 ✭
OK, not sure if it's the best way of doing it, but I finally made it happen. Here is how.
npm install eth-lightwallet
node
>var lightwallet = require("eth-lightwallet")
>var upgrade = require("eth-lightwallet/lib/upgrade")
>var jsonStr='contents of ./app/users/admin/*.json file'
>var newJSON
>upgrade.upgradeOldSerialized(jsonStr, , function(err, tmpJSON) {newJSON=tmpJSON;console.log(newJSON);});
>keystore = lightwallet.keystore.deserialize(newJSON);
>var derivedKey;
>lightwallet.keystore.deriveKeyFromPassword('', function (err, pwDerivedKey) {derivedKey = pwDerivedKey;});
>var addresses = keystore.getAddresses();
>keystore.exportPrivateKey(addresses[0], derivedKey);
I used advice from this post, however, sdk-s have changed since:
http://ethereum.stackexchange.com/questions/630/how-do-i-transfer-funds-to-another-account-from-a-lightwallet-dat-file