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How to use PackageInfo.GET_SIGNING_CERTIFICATES in API 28?
1
The documentation of PackageManager.GET_SIGNATURES says "This constant was deprecated in API level 28. Use GET_SIGNING_CERTIFICATES instead".
Unfortunately it was not secure and was easily hacked.
How can you use the new "GET_SIGNING_CERTIFICATES" introduced with Android P?
android signature asked Aug 27 '18 at 14:46
EttoreEttore
968
add a comment |
1
The documentation of PackageManager.GET_SIGNATURES says "This constant was deprecated in API level 28. Use GET_SIGNING_CERTIFICATES instead".
Unfortunately it was not secure and was easily hacked.
How can you use the new "GET_SIGNING_CERTIFICATES" introduced with Android P?
android signature asked Aug 27 '18 at 14:46
EttoreEttore
968
"Unfortunately it was not secure and was easily hacked." Please elaborate.
– Michael
Aug 27 '18 at 15:22
Answers should be posted as answers, not as an edit to a question.
– Michael
Aug 27 '18 at 15:42
add a comment |
1
1
1
The documentation of PackageManager.GET_SIGNATURES says "This constant was deprecated in API level 28. Use GET_SIGNING_CERTIFICATES instead".
Unfortunately it was not secure and was easily hacked.
How can you use the new "GET_SIGNING_CERTIFICATES" introduced with Android P?
android signature asked Aug 27 '18 at 14:46
EttoreEttore
968
The documentation of PackageManager.GET_SIGNATURES says "This constant was deprecated in API level 28. Use GET_SIGNING_CERTIFICATES instead".
Unfortunately it was not secure and was easily hacked.
How can you use the new "GET_SIGNING_CERTIFICATES" introduced with Android P?
android signature android signature asked Aug 27 '18 at 14:46
EttoreEttore
968
asked Aug 27 '18 at 14:46
EttoreEttore
968
edited Aug 27 '18 at 16:00
Ettore
asked Aug 27 '18 at 14:46
EttoreEttore
968
asked Aug 27 '18 at 14:46
EttoreEttore
968
asked Aug 27 '18 at 14:46
EttoreEttore
968
968
"Unfortunately it was not secure and was easily hacked." Please elaborate.
– Michael
Aug 27 '18 at 15:22
Answers should be posted as answers, not as an edit to a question.
– Michael
Aug 27 '18 at 15:42
add a comment |
"Unfortunately it was not secure and was easily hacked." Please elaborate.
– Michael
Aug 27 '18 at 15:22
Answers should be posted as answers, not as an edit to a question.
– Michael
Aug 27 '18 at 15:42
"Unfortunately it was not secure and was easily hacked." Please elaborate.
– Michael
Aug 27 '18 at 15:22
"Unfortunately it was not secure and was easily hacked." Please elaborate.
– Michael
Aug 27 '18 at 15:22
Answers should be posted as answers, not as an edit to a question.
– Michael
Aug 27 '18 at 15:42
Answers should be posted as answers, not as an edit to a question.
– Michael
Aug 27 '18 at 15:42
add a comment |
2 Answers
2
active
oldest
votes
3
My solution is:
In the gradle build set "compileSdkVersion 28" and "targetSdkVersion 28", now you can use this sample code:
try {
if(Build.VERSION.SDK_INT >= 28) {
@SuppressLint("WrongConstant") final PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNING_CERTIFICATES);
final Signature signatures = packageInfo.signingInfo.getApkContentsSigners();
final MessageDigest md = MessageDigest.getInstance("SHA");
for (Signature signature : signatures) {
md.update(signature.toByteArray());
final String signatureBase64 = new String(Base64.encode(md.digest(), Base64.DEFAULT));
Log.d("Signature Base64", signatureBase64);
}
}
} catch (PackageManager.NameNotFoundException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
If strangely Android Studio does not recognize the constant GET_SIGNING_CERTIFICATES you can use the @SuppressLint ("WrongConstant") annotation.
answered Aug 27 '18 at 16:00
EttoreEttore
968
add a comment |
3
In API28 you should check for multipleSigners too.
This function will do the job(It's in kotlin):
fun getApplicationSignature(packageName: String = context.packageName): List<String> {
val signatureList: List<String>
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
// New signature
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNING_CERTIFICATES).signingInfo
signatureList = if (sig.hasMultipleSigners()) {
// Send all with apkContentsSigners
sig.apkContentsSigners.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
} else {
// Send one with signingCertificateHistory
sig.signingCertificateHistory.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
} else {
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES).signatures
signatureList = sig.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
return signatureList
} catch (e: Exception) {
// Handle error
}
return emptyList()
}
And byteToHex is:
fun bytesToHex(bytes: ByteArray): String {
val hexArray = charArrayOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F')
val hexChars = CharArray(bytes.size * 2)
var v: Int
for (j in bytes.indices) {
v = bytes[j].toInt() and 0xFF
hexChars[j * 2] = hexArray[v.ushr(4)]
hexChars[j * 2 + 1] = hexArray[v and 0x0F]
}
return String(hexChars)
}
This'll handle App signature in android 9 (or lower)
answered Nov 21 '18 at 7:31
MalvMalv
884716
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
3
My solution is:
In the gradle build set "compileSdkVersion 28" and "targetSdkVersion 28", now you can use this sample code:
try {
if(Build.VERSION.SDK_INT >= 28) {
@SuppressLint("WrongConstant") final PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNING_CERTIFICATES);
final Signature signatures = packageInfo.signingInfo.getApkContentsSigners();
final MessageDigest md = MessageDigest.getInstance("SHA");
for (Signature signature : signatures) {
md.update(signature.toByteArray());
final String signatureBase64 = new String(Base64.encode(md.digest(), Base64.DEFAULT));
Log.d("Signature Base64", signatureBase64);
}
}
} catch (PackageManager.NameNotFoundException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
If strangely Android Studio does not recognize the constant GET_SIGNING_CERTIFICATES you can use the @SuppressLint ("WrongConstant") annotation.
answered Aug 27 '18 at 16:00
EttoreEttore
968
add a comment |
3
My solution is:
In the gradle build set "compileSdkVersion 28" and "targetSdkVersion 28", now you can use this sample code:
try {
if(Build.VERSION.SDK_INT >= 28) {
@SuppressLint("WrongConstant") final PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNING_CERTIFICATES);
final Signature signatures = packageInfo.signingInfo.getApkContentsSigners();
final MessageDigest md = MessageDigest.getInstance("SHA");
for (Signature signature : signatures) {
md.update(signature.toByteArray());
final String signatureBase64 = new String(Base64.encode(md.digest(), Base64.DEFAULT));
Log.d("Signature Base64", signatureBase64);
}
}
} catch (PackageManager.NameNotFoundException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
If strangely Android Studio does not recognize the constant GET_SIGNING_CERTIFICATES you can use the @SuppressLint ("WrongConstant") annotation.
answered Aug 27 '18 at 16:00
EttoreEttore
968
add a comment |
3
3
3
My solution is:
In the gradle build set "compileSdkVersion 28" and "targetSdkVersion 28", now you can use this sample code:
try {
if(Build.VERSION.SDK_INT >= 28) {
@SuppressLint("WrongConstant") final PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNING_CERTIFICATES);
final Signature signatures = packageInfo.signingInfo.getApkContentsSigners();
final MessageDigest md = MessageDigest.getInstance("SHA");
for (Signature signature : signatures) {
md.update(signature.toByteArray());
final String signatureBase64 = new String(Base64.encode(md.digest(), Base64.DEFAULT));
Log.d("Signature Base64", signatureBase64);
}
}
} catch (PackageManager.NameNotFoundException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
If strangely Android Studio does not recognize the constant GET_SIGNING_CERTIFICATES you can use the @SuppressLint ("WrongConstant") annotation.
answered Aug 27 '18 at 16:00
EttoreEttore
968
My solution is:
In the gradle build set "compileSdkVersion 28" and "targetSdkVersion 28", now you can use this sample code:
try {
if(Build.VERSION.SDK_INT >= 28) {
@SuppressLint("WrongConstant") final PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNING_CERTIFICATES);
final Signature signatures = packageInfo.signingInfo.getApkContentsSigners();
final MessageDigest md = MessageDigest.getInstance("SHA");
for (Signature signature : signatures) {
md.update(signature.toByteArray());
final String signatureBase64 = new String(Base64.encode(md.digest(), Base64.DEFAULT));
Log.d("Signature Base64", signatureBase64);
}
}
} catch (PackageManager.NameNotFoundException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
If strangely Android Studio does not recognize the constant GET_SIGNING_CERTIFICATES you can use the @SuppressLint ("WrongConstant") annotation.
answered Aug 27 '18 at 16:00
EttoreEttore
968
answered Aug 27 '18 at 16:00
EttoreEttore
968
answered Aug 27 '18 at 16:00
EttoreEttore
968
answered Aug 27 '18 at 16:00
EttoreEttore
968
968
add a comment |
add a comment |
3
In API28 you should check for multipleSigners too.
This function will do the job(It's in kotlin):
fun getApplicationSignature(packageName: String = context.packageName): List<String> {
val signatureList: List<String>
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
// New signature
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNING_CERTIFICATES).signingInfo
signatureList = if (sig.hasMultipleSigners()) {
// Send all with apkContentsSigners
sig.apkContentsSigners.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
} else {
// Send one with signingCertificateHistory
sig.signingCertificateHistory.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
} else {
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES).signatures
signatureList = sig.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
return signatureList
} catch (e: Exception) {
// Handle error
}
return emptyList()
}
And byteToHex is:
fun bytesToHex(bytes: ByteArray): String {
val hexArray = charArrayOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F')
val hexChars = CharArray(bytes.size * 2)
var v: Int
for (j in bytes.indices) {
v = bytes[j].toInt() and 0xFF
hexChars[j * 2] = hexArray[v.ushr(4)]
hexChars[j * 2 + 1] = hexArray[v and 0x0F]
}
return String(hexChars)
}
This'll handle App signature in android 9 (or lower)
answered Nov 21 '18 at 7:31
MalvMalv
884716
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
add a comment |
3
In API28 you should check for multipleSigners too.
This function will do the job(It's in kotlin):
fun getApplicationSignature(packageName: String = context.packageName): List<String> {
val signatureList: List<String>
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
// New signature
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNING_CERTIFICATES).signingInfo
signatureList = if (sig.hasMultipleSigners()) {
// Send all with apkContentsSigners
sig.apkContentsSigners.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
} else {
// Send one with signingCertificateHistory
sig.signingCertificateHistory.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
} else {
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES).signatures
signatureList = sig.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
return signatureList
} catch (e: Exception) {
// Handle error
}
return emptyList()
}
And byteToHex is:
fun bytesToHex(bytes: ByteArray): String {
val hexArray = charArrayOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F')
val hexChars = CharArray(bytes.size * 2)
var v: Int
for (j in bytes.indices) {
v = bytes[j].toInt() and 0xFF
hexChars[j * 2] = hexArray[v.ushr(4)]
hexChars[j * 2 + 1] = hexArray[v and 0x0F]
}
return String(hexChars)
}
This'll handle App signature in android 9 (or lower)
answered Nov 21 '18 at 7:31
MalvMalv
884716
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
add a comment |
3
3
3
In API28 you should check for multipleSigners too.
This function will do the job(It's in kotlin):
fun getApplicationSignature(packageName: String = context.packageName): List<String> {
val signatureList: List<String>
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
// New signature
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNING_CERTIFICATES).signingInfo
signatureList = if (sig.hasMultipleSigners()) {
// Send all with apkContentsSigners
sig.apkContentsSigners.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
} else {
// Send one with signingCertificateHistory
sig.signingCertificateHistory.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
} else {
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES).signatures
signatureList = sig.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
return signatureList
} catch (e: Exception) {
// Handle error
}
return emptyList()
}
And byteToHex is:
fun bytesToHex(bytes: ByteArray): String {
val hexArray = charArrayOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F')
val hexChars = CharArray(bytes.size * 2)
var v: Int
for (j in bytes.indices) {
v = bytes[j].toInt() and 0xFF
hexChars[j * 2] = hexArray[v.ushr(4)]
hexChars[j * 2 + 1] = hexArray[v and 0x0F]
}
return String(hexChars)
}
This'll handle App signature in android 9 (or lower)
answered Nov 21 '18 at 7:31
MalvMalv
884716
In API28 you should check for multipleSigners too.
This function will do the job(It's in kotlin):
fun getApplicationSignature(packageName: String = context.packageName): List<String> {
val signatureList: List<String>
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
// New signature
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNING_CERTIFICATES).signingInfo
signatureList = if (sig.hasMultipleSigners()) {
// Send all with apkContentsSigners
sig.apkContentsSigners.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
} else {
// Send one with signingCertificateHistory
sig.signingCertificateHistory.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
} else {
val sig = context.packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES).signatures
signatureList = sig.map {
val digest = MessageDigest.getInstance("SHA")
digest.update(it.toByteArray())
bytesToHex(digest.digest())
}
}
return signatureList
} catch (e: Exception) {
// Handle error
}
return emptyList()
}
And byteToHex is:
fun bytesToHex(bytes: ByteArray): String {
val hexArray = charArrayOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F')
val hexChars = CharArray(bytes.size * 2)
var v: Int
for (j in bytes.indices) {
v = bytes[j].toInt() and 0xFF
hexChars[j * 2] = hexArray[v.ushr(4)]
hexChars[j * 2 + 1] = hexArray[v and 0x0F]
}
return String(hexChars)
}
This'll handle App signature in android 9 (or lower)
answered Nov 21 '18 at 7:31
MalvMalv
884716
answered Nov 21 '18 at 7:31
MalvMalv
884716
answered Nov 21 '18 at 7:31
MalvMalv
884716
answered Nov 21 '18 at 7:31
MalvMalv
884716
884716
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
add a comment |
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
@Ettore Feel free to vote and accept if the answer was helpful to you.
– Malv
Jan 20 at 18:16
add a comment |
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"Unfortunately it was not secure and was easily hacked." Please elaborate.
– Michael
Aug 27 '18 at 15:22
Answers should be posted as answers, not as an edit to a question.
– Michael
Aug 27 '18 at 15:42