http://lbs.amap.com/faq/top/hot-questions/249
keytool
cmd
cd .android
// //debug.keystore
keytool -list -v -keystore debug.keystore
android //默认密码
// //自定义的 keystor
keytool -list -v -keystore apk的keystore
Java源码
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
System.out.println("SHA1: "+getCertificateSHA1Fingerprint(this));
}
//这个是获取 SHA1 的方法
public static String getCertificateSHA1Fingerprint(Context context) {
//获取包管理器
PackageManager pm = context.getPackageManager();
//获取当前要获取 SHA1 值的包名,也可以用其他的包名,但需要注意,
//在用其他包名的前提是,此方法传递的参数 Context 应该是对应包的上下文。
String packageName = context.getPackageName();
//返回包括在包中的签名信息
int flags = PackageManager.GET_SIGNATURES;
PackageInfo packageInfo = null;
try {
//获得包的所有内容信息类
packageInfo = pm.getPackageInfo(packageName, flags);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
//签名信息
Signature[] signatures = packageInfo.signatures;
byte[] cert = signatures[0].toByteArray();
//将签名转换为字节数组流
InputStream input = new ByteArrayInputStream(cert);
//证书工厂类,这个类实现了出厂合格证算法的功能
CertificateFactory cf = null;
try {
cf = CertificateFactory.getInstance("X509");
} catch (Exception e) {
e.printStackTrace();
}
//X509 证书,X.509 是一种非常通用的证书格式
X509Certificate c = null;
try {
c = (X509Certificate) cf.generateCertificate(input);
} catch (Exception e) {
e.printStackTrace();
}
String hexString = null;
try {
//加密算法的类,这里的参数可以使 MD4,MD5 等加密算法
MessageDigest md = MessageDigest.getInstance("SHA1");
//获得公钥
byte[] publicKey = md.digest(c.getEncoded());
//字节到十六进制的格式转换
hexString = byte2HexFormatted(publicKey);
} catch (NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (CertificateEncodingException e) {
e.printStackTrace();
}
return hexString;
}
//这里是将获取到得编码进行 16 进制转换
private static String byte2HexFormatted(byte[] arr) {
StringBuilder str = new StringBuilder(arr.length * 2);
for (int i = 0; i < arr.length; i++) {
String h = Integer.toHexString(arr[i]);
int l = h.length();
if (l == 1)
h = "0" + h;
if (l > 2)
h = h.substring(l - 2, l);
str.append(h.toUpperCase());
if (i < (arr.length - 1))
str.append(':');
}
return str.toString();
}
在输出栏中搜索“SHA1”可看到SHA1: