CodeCow/PCAPdroid
1
0
Fork 0
mirror of https://github.com/emanuele-f/PCAPdroid.git synced 2026-06-16 21:10:57 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Improve ID comments

Browse Source
This commit is contained in:
emanuele-f 2021-12-02 23:20:13 +01:00
parent cc11790f0e
commit 62bb11b251
1 changed files with 11 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
app/src/main/java/com/emanuelef/remote_capture/Billing.java
View File

@ -118,12 +118,13 @@ public class Billing {
}
public String getSystemId() {
// NOTE: On Android >= O, the ID is unique to each combination of package, key, user and device
String system_id = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) ?
Settings.Secure.getString(mContext.getContentResolver(), Settings.Secure.ANDROID_ID) :
Build.SERIAL;
try {
// Calculate the MD5 to increase privacy
// Calculate the MD5 to provide a consistent output and to increase privacy on Android < O
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] digest = md5.digest(system_id.getBytes());
system_id = "M" + Utils.byteArrayToHex(digest, 8);
@ -145,20 +146,20 @@ public class Billing {
int r_extra = (signature[offset] < 0) ? 1 : 0;
int n_extra = (signature[offset + r_len] < 0) ? 1 : 0;
int tot_len = 2*r_len + 6 + r_extra + n_extra;
byte[] der = new byte[tot_len];
byte[] rv = new byte[tot_len];
int i = 0;
der[i++] = 0x30; der[i++] = (byte)(tot_len - 2);
rv[i++] = 0x30; rv[i++] = (byte)(tot_len - 2);
der[i++] = 0x02; der[i++] = (byte)(r_len + r_extra);
if(r_extra > 0) der[i++] = 0x00;
System.arraycopy(signature, offset, der, i, r_len);
rv[i++] = 0x02; rv[i++] = (byte)(r_len + r_extra);
if(r_extra > 0) rv[i++] = 0x00;
System.arraycopy(signature, offset, rv, i, r_len);
i += 28;
der[i++] = 0x02; der[i++] = (byte)(r_len + n_extra);
if(n_extra > 0) der[i++] = 0x00;
System.arraycopy(signature, offset + r_len, der, i, r_len);
rv[i++] = 0x02; rv[i++] = (byte)(r_len + n_extra);
if(n_extra > 0) rv[i++] = 0x00;
System.arraycopy(signature, offset + r_len, rv, i, r_len);
return der;
return rv;
}
}