Eclipse project is very convenient to view and modify MD5 on Eclipse, as shown in the following figure:

(1) Utilize the keystore file of the project.

(2) Query MD5 signature through certificate. RSA file.

The specific steps are as follows:

1) to get the RSA file.

APK is opened as a zip file, and one of them has. The RSA suffix in the \META-INF\ directory, usually named CERT. Republic of South Africa (Republic of South Africa)

2) Use the keytool command to obtain the MD5 signature.