How to find signature of apk file?

android signature
user3548321 picture user3548321 · Jul 25, 2016 · Viewed 17.3k times · Source

What's the easiest way to find signature of an apk file? Please note that I'm not asking about code. I just want to find it from my pc. Signature like this one 975yYkKAQF+KST7g3ASHvHkYopq=

Answer

Heath Borders picture Heath Borders · May 14, 2020 
$ $ANDROID_SDK/build-tools/$BUILD_TOOLS_VERSION/apksigner verify --print-certs -v $APK_FILE

Example:

$ /Users/hborders/android/build-tools/29.0.2/apksigner verify --print-certs -v ~/Desktop/my-apk.apk

Verifies
Verified using v1 scheme (JAR signing): true
Verified using v2 scheme (APK Signature Scheme v2): true
Verified using v3 scheme (APK Signature Scheme v3): false
Number of signers: 1
Signer #1 certificate DN: CN=Bob Smith, OU=Acme, O=Acme, L=San Francisco, ST=California, C=US
Signer #1 certificate SHA-256 digest: f1f2f3f3f21f26a67s76a6a76a76a76a76a67c78c8c78c709c90c90c09932451
Signer #1 certificate SHA-1 digest: 839103847abdefcbade123713957358920
Signer #1 certificate MD5 digest: 182831983712923f2e2e2f2a2c2fbc25
Signer #1 key algorithm: RSA
Signer #1 key size (bits): 1024
Signer #1 public key SHA-256 digest: 8acaca8cabcaabdadc8cc99cc695ace47aec4c747c746c476cae4657c47c4765
Signer #1 public key SHA-1 digest: b11bca4123bea24befbe5b8be9768ef078

apksigner is part of the Android SDK in the build-tools directory. It's the tool print-apk-signature uses.

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