IIT EndUser CA-1 v1.3.300.121.1
APK · 56.9 MB · version code 121 · Android 5.0+ · uploaded Aug 26, 2026
- Signature matches the Google Play version Details
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File information
- Version
- v1.3.300.121.1 (121)
- Uploaded
- Aug 26, 2026
- Size
- 56.9 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- e19b68117a5d406ef199f21cce4bfe05
- Signing certificate (SHA-1)
- 9C:44:58:2C:89:AE:E5:B7:E6:6C:1A:EB:4E:BA:91:90:BB:2E:0A:BF
- Signed by
- CN=JSC Institute of Informational Technologies, OU=Secure Software Development Department, O=JSC Institute of Informational Technologies, L=Kharkov, ST=Kharkovska, C=UA
- File name
- ua-com-iit-121-76272948-e19b68117a5d406ef199f21cce4bfe05.apk
- Package
- ua.com.iit
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v1.3.300.121.1
DSTU:7564 and DSTU:7624 algo support has been added
Permissions (14)
This version requests 14 permissions, 2 of them sensitive.
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Foreground service connected device android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) ua.com.iit.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Nfc android.permission.NFC
- Request ignore battery optimizations android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- Usb permission android.permission.USB_PERMISSION
- Use biometric hardware android.permission.USE_BIOMETRIC
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Aug 26, 2026.
- Certificate issued to “JSC Institute of Informational Technologies” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature verified Aug 26, 2026
- Validated against Google Play Aug 26, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install IIT EndUser CA-1 on Android 5.0+
You'll need about 113.8 MB of free space.
- Download the APK — tap Download APK above (56.9 MB). 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 ua-com-iit-121-76272948-e19b68117a5d406ef199f21cce4bfe05.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 e19b68117a5d406ef199f21cce4bfe05. 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 IIT EndUser CA-1 — 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 5.0+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.