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Verify your download

So no one can slip you a tampered app, you can check two things: that it's signed by us (the real guarantee) and that the file is exactly the one we published.

1. Signature fingerprint (the real guarantee)

All our APKs are signed with the same key. Android requires that signature on install and rejects any update with a different signature: that's why a tampered app CANNOT be installed over yours. This is the fingerprint (SHA-256) of our signing certificate; it's the same across all versions:

7379394507e8311c3a1d73bfc0e737c46032bc97e829eee9fa179dab63bf0246

Check it with: apksigner verify --print-certs looklock-v3.0.xx.apk (it will give a "certificate SHA-256 digest": it must match the one above).

2. File SHA-256

Additionally, this is the SHA-256 hash of each build. It confirms the downloaded file is identical to what we published, without a single changed byte.

looklock-v3.0.79.apk (latest):

1d87430dee291ab2235f32a7ebbeebdf03eea0c802e00740baf66b1e061ccebe

How to check it

  • Windows: certutil -hashfile looklock-v3.0.xx.apk SHA256
  • Linux / Mac: sha256sum looklock-v3.0.xx.apk
  • Android: a hashing app (e.g. "Hash Droid") on the downloaded APK.

The value you get must match, character by character, the one on this page.

Hashes of all versions

VersionSHA-256
looklock-v3.0.79.apk1d87430dee291ab2235f32a7ebbeebdf03eea0c802e00740baf66b1e061ccebe
looklock-v3.0.78.apk4efc3fca888573290b3350d25cd9887befbf41ae5c77eb10fb98530a99e7c7cf
looklock-v3.0.77.apk569d5e82bfceae96aa5ec05cda7715d7bf010a92808dcf3f008f4e8992fde9a1
looklock-v3.0.76.apk29748e4bc4ef76230d6c918aaeb4ecc1770a0735c8c031f1c6454773567618be
looklock-v3.0.75.apk588af206c0c56155e5d444ef74f04e411ccaaab354a20cedfa66368e17c69d67
looklock-v3.0.74.apk1282e601d15e13dbfd53db50f5bc1860e61dcf83bfbc52696c64c93211968933
looklock-v3.0.73.apkd59678960ae301755543b2599e1b1aad50071ff2834b8cdd63701b248137d435
looklock-v3.0.72.apk3b0d790bfd41ea99865e5931dbcae57c805d95c2854f74324b0f5ba0c0e81517
looklock-v3.0.71.apk7eec9efc275519a19e2e104c2de2f07ac1af519ea01c7838b652769db4d768ea
looklock-v3.0.70.apkc859ed9807884d7f2cc51a0f224abd4d715f63cafc67aeb93bd7098aca33ec6a
looklock-v3.0.69.apk6513b8b4529cb9ee7175f773025e3b33200eba5f38976192d3218e4b88cc908f
looklock-v3.0.68.apk9ec1e834588709d34f32fd0bb92be12bfb1404bae81bb70377f32f92d597755f
looklock-v3.0.67.apk6e3cffac341c43d907cd05b5a5339e02c9e407e61d9fe4aca3de134ee951a5c5
looklock-v3.0.66.apkdf76203a4856d630d54b1db9f0185dfb93b429c84905a9095bf8696b70b215b0
looklock-v3.0.65.apkd5f7a8653ca59c74617fd7c5a03eef383f7b627a1ac2ddb7cb62a51bf0b261e1
looklock-v3.0.64.apk3fda32a095ef1e191d9d046a7e90389d5e39ff26bc21accd0584e89206e70ebc
looklock-v3.0.63.apkdfc6748cefb8bc918309837951553ba64775d168e8b629eb444f46a16a6e3d8f
looklock-v3.0.62.apka8375dc0de4f1cb52baf2ba1f505cec5b187d427618eb9e8f767f78bb61fb824
looklock-v3.0.61.apk6595387ffadd6d416515d0c23293ac180239d20da2dd589fa84a526664b23f0e

View the manifest (checksums.json)

Honest note: this hash is published on our server. If someone fully compromised the server, they could change the APK and its hash at the same time. That's why the strongest guarantee is the SIGNATURE (our key is offline): that fingerprint can't be forged by anyone without the key, and Android always checks it.

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