signapk - A cross-platform standalone tool to sign the Android APK file v2.0 2023-12-15

Download signapk for Windows x86 (0.2 MB)
Download signapk for Windows x64 (0.3 MB)
Download signapk for Windows ARM64 (0.3 MB)
Download signapk for macOS (0.5 MB)
Download signapk for Ubuntu (0.2 MB)
Download signapk docs in CHM format (16 KB)

signapk is a free cross-platform standalone tool to sign the Android APK file, it's written in C/C++ and has compatible command line arguments with Google ApkSigner.

signapk is implemented from scratch in C/C++ according to ApkSigner docs, because there are many factors involved in APK signing. If you have problems with the signature, please submit an issue at https://github.com/dvdforge/signapk/issues.

Features

• Written in C/C++, with no third-party dependencies
• Native binaries for Windows (x86/x64/ARM64), macOS (x86_64/ARM64) and Linux (Ubuntu)
• Compatible command line arguments with ApkSigner
• Support APK Signature Scheme v1
• Support APK Signature Scheme v2
• Support APK Signature Scheme v3

Todo

• Loading PKCS#12 keystore
  v2.0 only supports keystore in jks format, if you are using PKCS#12 format, please convert it to jks first:

  keytool -importkeystore -srckeystore -srcstoretype PKCS12 -destkeystore -deststoretype JKS -srcstorepass mysecret -deststorepass mysecret -srcalias myalias -destalias myalias -srckeypass mykeypass -destkeypass mykeypass -noprompt
  

• Support APK Signature Scheme v4
• Verify APK Signature Scheme v1

Usage

signapk [options]

Command	Description
sign	Sign the provided APK
verify	Check whether the provided APK is expected to verify on Android

Options	Description
--ks	KeyStore file
--ks-key-alias	KeyStore key alias
--ks-pass	KeyStore password
--key-pass	Key password
--in	Input file
--out	Output file
--help -h	Help
--verbose -v	Verbose output
--v1-signing-enabled	Whether to enable signing using APK Signature Scheme v1
--v2-signing-enabled	Whether to enable signing using APK Signature Scheme v2
--v3-signing-enabled	Whether to enable signing using APK Signature Scheme v3
--min-sdk-version	Lowest API Level
--max-sdk-version	Highest API Level

Example

# Sign the in.apk with signing scheme v1/v2/v3, output to out.apk
signapk sign --ks rsa_1024.jks --ks-pass pass:android --key-pass pass:android --v1-signing-enabled true --v2-signing-enabled true --v3-signing-enabled true --out out.apk in.apk

# Verify app.apk
signapk verify --verbose app.apk

Changelog

Version 2.0 2023-12-15

• Changed: implement complatible command line arguments with ApkSigner
• Added: support signature algorithm DSA-1024, DSA-2048 and DSA-3072
• Added: native binaries for macOS (x86-x64 and ARM64)
• Added: native binaries for Linux (Unbuntu)

Version 1.0 2023-06-01

• First public release