import android.content.Context
import android.content.pm.PackageInfo
import android.content.pm.PackageManager
import android.content.pm.Signature
import java.security.MessageDigest
import java.util.ArrayList
import java.util.HashMap
/**
* 获取签名工具类
*/
public class AppSigning {
public final static String MD5 = "MD5"
public final static String SHA1 = "SHA1"
public final static String SHA256 = "SHA256"
private static HashMap> mSignMap = new HashMap<>()
/**
* 返回一个签名的对应类型的字符串
*
* @param context
* @param type
* @return 因为一个安装包可以被多个签名文件签名，所以返回一个签名信息的list
*/
public static ArrayList getSignInfo(Context context, String type) {
if (context == null || type == null) {
return null
}
String packageName = context.getPackageName()
if (packageName == null) {
return null
}
if (mSignMap.get(type) != null) {
return mSignMap.get(type)
}
ArrayList mList = new ArrayList()
try {
Signature[] signs = getSignatures(context, packageName)
for (Signature sig : signs) {
String tmp = "error!"
if (MD5.equals(type)) {
tmp = getSignatureByteString(sig, MD5)
} else if (SHA1.equals(type)) {
tmp = getSignatureByteString(sig, SHA1)
} else if (SHA256.equals(type)) {
tmp = getSignatureByteString(sig, SHA256)
}
mList.add(tmp)
}
} catch (Exception e) {
// LogUtil.e(e.toString())
}
mSignMap.put(type, mList)
return mList
}
/**
* 获取签名sha1值
*
* @param context
* @return
*/
public static String getSha1(Context context) {
String res = ""
ArrayList mlist = getSignInfo(context, SHA1)
if (mlist != null && mlist.size() != 0) {
res = mlist.get(0)
}
return res
}
/**
* 获取签名MD5值
*
* @return
*/
public static String getMD5(Context context) {
String res = ""
ArrayList mlist = getSignInfo(context, MD5)
if (mlist != null && mlist.size() != 0) {
res = mlist.get(0)
}
return res
}
/**
* 获取签名SHA256值
*
* @param context
* @return
*/
public static String getSHA256(Context context) {
String res = ""
ArrayList mlist = getSignInfo(context, SHA256)
if (mlist != null && mlist.size() != 0) {
res = mlist.get(0)
}
return res
}
/**
* 返回对应包的签名信息
*
* @param context
* @param packageName
* @return
*/
private static Signature[] getSignatures(Context context, String packageName) {
PackageInfo packageInfo = null
try {
packageInfo = context.getPackageManager().getPackageInfo(packageName, PackageManager.GET_SIGNATURES)
return packageInfo.signatures
} catch (Exception e) {
// LogUtil.e(e.toString())
}
return null
}
/**
* 获取相应的类型的字符串（把签名的byte[]信息转换成16进制）
*
* @param sig
* @param type
* @return
*/
private static String getSignatureString(Signature sig, String type) {
byte[] hexBytes = sig.toByteArray()
String fingerprint = "error!"
try {
MessageDigest digest = MessageDigest.getInstance(type)
if (digest != null) {
byte[] digestBytes = digest.digest(hexBytes)
StringBuilder sb = new StringBuilder()
for (byte digestByte : digestBytes) {
sb.append((Integer.toHexString((digestByte & 0xFF) | 0x100)).substring(1, 3))
}
fingerprint = sb.toString()
}
} catch (Exception e) {
// LogUtil.e(e.toString())
}
return fingerprint
}
/**
* 获取相应的类型的字符串（把签名的byte[]信息转换成 95:F4:D4:FG 这样的字符串形式）
*
* @param sig
* @param type
* @return
*/
private static String getSignatureByteString(Signature sig, String type) {
byte[] hexBytes = sig.toByteArray()
String fingerprint = "error!"
try {
MessageDigest digest = MessageDigest.getInstance(type)
if (digest != null) {
byte[] digestBytes = digest.digest(hexBytes)
StringBuilder sb = new StringBuilder()
for (byte digestByte : digestBytes) {
sb.append(((Integer.toHexString((digestByte & 0xFF) | 0x100)).substring(1, 3)).toUpperCase())
sb.append(":")
}
fingerprint = sb.substring(0, sb.length() - 1).toString()
}
} catch (Exception e) {
// LogUtil.e(e.toString())
}
return fingerprint
}
}
