What does Android SHA 1 mean? SHA 1 is a secure hash algorithm, which converts input data into fixed-length output strings. In the development of Android, SHA 1 algorithm is used to ensure the integrity and security of the application. Each application has a unique SHA 1 fingerprint, which can be used to verify the uniqueness of the APK package.

How does the Android SHA 1 algorithm work? Its basic principle is to group the original data blocks according to 5 12bit, and then perform a series of complex calculations for each group. In the calculation process, each grouping will use the results of the previous grouping to avoid the repeated use of data. The final output result is an output string of 160bit, namely SHA 1 fingerprint.

Why do you need to use the Android SHA 1 algorithm? SHA 1 fingerprint is safe and reliable, which is used to check the signature of APK package to ensure the integrity and reliability of application. In addition, SHA 1 algorithm is also used in cryptography, digital signature and other aspects to ensure the privacy of users and the security of data. In the development of Android applications, using SHA 1 algorithm to generate fingerprints and sign them can effectively ensure the security and reliability of data and provide users with a better experience.