Help spread awareness for build reproducibility
Please help us spread the word, asking Trustee Wallet bitcoin wallet to support reproducible builds via their Twitter!
Do your own research!
Try out searching for "lost bitcoins", "stole my money" or "scammers" together with the wallet's name, even if you think the wallet is generally trustworthy. For all the bigger wallets you will find accusations. Make sure you understand why they were made and if you are comfortable with the provider's reaction.
The Analysis ¶
Update 2021-02-07: This wallet has its issues you might want to take into consideration, too.
On the App Store the provider claims:
Trustee doesn’t authorize third parties to store private keys and details of your assets, so operations remain only yours!
Any time you buy or sell bitcoin we guarantee that no one else will save your transaction details. Everything is stored solely on your Trustee wallet and you are the only owner of your private keys and the seed phrase.
This is weirdly worded but the final sentence is very clear about who owns the private keys: You alone on your phone.
On public source their website claims:
Trustee Wallet is an open-source mobile multi-currency crypto wallet, this is the ideal solution for the safe storage and operational management of your crypto assets
and we found their GitHub.
There they comment in length on the issue of reproducibility for their Android appbut make no such claims for their iPhone product which leads us to the verdict: not verifiable.
We could not verify that the provided code matches the binary!
As part of our Methodology, we ask:Is the published binary matching the published source code? If not, we tag it
Published code doesn’t help much if it is not what the published binary was built from. That is why we try to reproduce the binary. We
- obtain the binary from the provider
- compile the published source code using the published build instructions into a binary
- compare the two binaries
- we might spend some time working around issues that are easy to work around
If this fails, we might search if other revisions match or if we can deduct the source of the mismatch but generally consider it on the provider to provide the correct source code and build instructions to reproduce the build, so we usually open a ticket in their code repository.
In any case, the result is a discrepancy between the binary we can create and the binary we can find for download and any discrepancy might leak your backup to the server on purpose or by accident.
As we cannot verify that the source provided is the source the binary was compiled from, this category is only slightly better than closed source but for now we have hope projects come around and fix verifiability issues.
Share onTwitter Facebook LinkedIn
Or embed a widget in your website
<iframe src="https://walletscrutiny.com/widget/#appId=iphone/com.trusteewallet&theme=auto&style=short" name="_ts" style="min-width:180px;border:0;border-radius:10px;max-width:280px;min-height:30px;"> </iframe>
<iframe src="https://walletscrutiny.com/widget/#appId=iphone/com.trusteewallet&theme=auto&style=long" style="max-width:100%;width:342px;border:0;border-radius:10px;min-height:290px;"> </iframe>