本文实例讲述了android实现获取签名及公钥的方法。分享给大家供大家参考。具体如下：
1. java代码如下：
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private byte[] getsign(context context) {
packagemanager pm = context.getpackagemanager();
list<packageinfo> apps = pm
.getinstalledpackages(packagemanager.get_signatures);
iterator<packageinfo> iter = apps.iterator();
while (iter.hasnext()) {
packageinfo info = iter.next();
string packagename = info.packagename;
//按包名 取签名
if (packagename.equals("com.test.test")) {
return info.signatures[0].tobytearray();
}
}
return null;
}
2. java代码如下：
public static string getpublickey(byte[] signature) {
try {
certificatefactory certfactory = certificatefactory
.getinstance("x.509");
x509certificate cert = (x509certificate) certfactory
.generatecertificate(new bytearrayinputstream(signature));
string publickey = cert.getpublickey().tostring();
publickey = publickey.substring(publickey.indexof("modulus: ") + 9,
publickey.indexof("\n", publickey.indexof("modulus:")));
log.d("track", publickey);
return publickey;
} catch (certificateexception e) {
e.printstacktrace();
}
return null;
}
希望本文所述对大家的android程序设计有所帮助。
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