Green: Bitcoin Walletlatest release: 3.7.3 ( 30th September 2021 ) last analysed 4th October 2021 Reproducible when tested
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The following Analysis is not a full code review! We plan to make code reviews available in the future but even then it will never be a stamp of approval but rather a list of incidents and questionable coding practice. Nasa sends probes to space that crash due to software bugs despite a huge budget and stringent scrutiny.
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 ¶
With this script we get:
Results: appId: com.greenaddress.greenbits_android_wallet signer: 32f9cc00b13fbeace51e2fb51df482044e42ad34a9bd912f179fedb16a42970e apkVersionName: 3.7.3 apkVersionCode: 22000373 verdict: reproducible appHash: f43452d74790aa086fbd2c73718e81a0fc24cb238258fda67cd5602193236e2f commit: a2ce021d7752fe489314728ef6a6e25225aecb5d Diff: Only in /tmp/fromPlay_com.greenaddress.greenbits_android_wallet_22000373/META-INF: GREENADD.RSA Only in /tmp/fromPlay_com.greenaddress.greenbits_android_wallet_22000373/META-INF: GREENADD.SF Only in /tmp/fromPlay_com.greenaddress.greenbits_android_wallet_22000373/META-INF: MANIFEST.MF Revision, tag (and its signature): object a2ce021d7752fe489314728ef6a6e25225aecb5d type commit tag release_3.7.3 tagger Luca Vaccaro <email@example.com> 1632963637 +0200 Release 3.7.3
which is what we want to see to give it the verdict reproducible.
The binary provided was reproducible from the code provided.
As part of our Methodology, we ask:Does the binary we built differ from what we downloaded? If not, we tag it Reproducible
If we can reproduce the binary we downloaded from the public source code, with all bytes accounted for, we call the product reproducible. This does not mean we audited the code but it’s the precondition to make sure the public code has relevance for the provided binary.
If the provider puts your funds at risk on purpose or by accident, security researchers can see this if they care to look. It also means that inside the company, engineers can verify that the release manager is releasing the product based on code known to all engineers on the team. A scammer would have to work under the potential eyes of security researchers. He would have to take more effort in hiding any exploit.
“Reproducible” does not mean “verified”. There is good reason to believe that security researchers as of today would not detect very blatant backdoors in the public source code before it gets exploited, much less if the attacker takes moderate efforts to hide it. This is especially true for less popular projects.
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<iframe src="https://walletscrutiny.com/widget/#appId=android/com.greenaddress.greenbits_android_wallet&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=android/com.greenaddress.greenbits_android_wallet&theme=auto&style=long" style="max-width:100%;width:342px;border:0;border-radius:10px;min-height:290px;"> </iframe>