copy/extract/patch android apk signatures & compare apks


apksigcopier is a tool for copying android APK signatures from a signed APK to an unsigned one (in order to verify reproducible builds). It can also be used to compare two APKs with different signatures. Its command-line tool offers four operations:

 * copy signatures directly from a signed to an unsigned APK
 * extract signatures from a signed APK to a directory
 * patch previously extracted signatures onto an unsigned APK
 * compare two APKs with different signatures (requires apksigner)

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