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Fix sha1 generation for savedata.

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codestation 2011-07-23 02:21:17 -04:30
parent 39d2736f9b
commit 2d0e8a3188
1 changed files with 7 additions and 5 deletions
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12
src/crypt/SavedataCypher.java
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@ -110,15 +110,17 @@ public class SavedataCypher extends DecryptUtils implements SavedataKeys {
}
private void update_sha1(byte buf[]) {
int len = buf.length - 24;
len += savedata_sha1_key.length();
byte replace[] = new byte[20];
System.arraycopy(buf, buf.length - 36, replace, 0, 20);
System.arraycopy(savedata_sha1_key.getBytes(), 0, buf, buf.length - 36, 20);
int len = buf.length - 16;
byte buffer[] = new byte[len];
System.arraycopy(buf, 0, buffer, 0, len-savedata_sha1_key.length());
System.arraycopy(savedata_sha1_key.getBytes(), 0, buffer, len-savedata_sha1_key.length(), savedata_sha1_key.length());
System.arraycopy(buf, 0, buffer, 0, len);
try {
MessageDigest md = MessageDigest.getInstance("sha-1");
byte digest[] = md.digest(buffer);
System.arraycopy(digest, 0, buf, buf.length - 24, 0x10);
System.arraycopy(replace, 0, buf, buf.length - 36, 20);
System.arraycopy(digest, 0, buf, buf.length - 24, digest.length);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}