QRSA OTP Authentication v1.4
APK · 35.5 KB · version code 5 · Android 6.0+ · uploaded Jan 13, 2018
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
File information
- Version
- v1.4 (5)
- Uploaded
- Jan 13, 2018
- Size
- 35.5 KB
- Requires
- Android 6.0+ (API 23)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 99ef26d3f484b26e116314afabc339dc
- Signing certificate (SHA-1)
- 7D:76:8B:BD:F9:FA:0E:30:E5:A7:B6:EC:8C:F9:91:B3:B6:64:84:80
- Signed by
- CN=Sebastian Nielsen, L=Goteborg, ST=Vastra Gotaland, C=SE
- File name
- eu-sebbe-www-qrsa-5-34423908-99ef26d3f484b26e116314afabc339dc.apk
- Package
- eu.sebbe.www.qrsa
- Downloads (all versions)
- 100+
- Age rating
- PEGI 3 · Everyone
What's new in v1.4
1.4:
- Added Md5 hash verification, to further protect against malleability attacks.
1.3:
- Improved code so the app can more reliable kill itself.
1.2:
- Added OTP into @string/app_name to match Google Play app name.
1.1:
- Changed enroll function to exclude linebreaks in the public key.
- Added new "u" enroll function. Read the description or GitHub page for more information. The "u" enroll function is recommended when enrolling from a computer.
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jan 14, 2018.
- Certificate issued to “Sebastian Nielsen” This is the certificate of the Google Play version.
Store checks
- Developer signature verified Jun 2, 2020
- Validated against Google Play Jan 14, 2018
- Antivirus scan passed Nov 10, 2020
- Uploaded by “devjam” Silver tier · 6,469 followers · uploading since 2016
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself.
How to install QRSA OTP Authentication on Android 6.0+
You'll need about 71 KB of free space.
- Download the APK — tap Download APK above (35.5 KB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap eu-sebbe-www-qrsa-5-34423908-99ef26d3f484b26e116314afabc339dc.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 99ef26d3f484b26e116314afabc339dc. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open QRSA OTP Authentication — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 6.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.