Xu Yaning created DIRKRB-220:
--------------------------------
Summary: Fix random2Key function in Des3KeyMaker.java
Key: DIRKRB-220
URL: https://issues.apache.org/jira/browse/DIRKRB-220
Project: Directory Kerberos
Issue Type: Bug
Reporter: Xu Yaning
There is a problem in random2Key function that it dosen't calculate the 8th
byte for every 7 bytes.
{code}
byte[] key = new byte[encProvider().keySize()];
byte[] tmp1 = new byte[7];
byte[] tmp2;
for (int i = 0; i < 3; i++) {
System.arraycopy(randomBits, i * 7, key, i * 8, 7);
System.arraycopy(randomBits, i * 7, tmp1, 0, 7);
tmp2 = getEightBits(tmp1);
key[8 * (i + 1) - 1] = tmp2[7];
int nthByte = i * 8;
key[nthByte + 7] = (byte) (((key[nthByte + 0] & 1) << 1) |
((key[nthByte + 1] & 1) << 2) |
((key[nthByte + 2] & 1) << 3) |
((key[nthByte + 3] & 1) << 4) |
((key[nthByte + 4] & 1) << 5) |
((key[nthByte + 5] & 1) << 6) |
((key[nthByte + 6] & 1) << 7));
for (int j = 0; j < 8; j++) {
int tmp = key[nthByte + j] & 0xfe;
tmp |= (Integer.bitCount(tmp) & 1) ^ 1;
key[nthByte + j] = (byte) tmp;
}
}
{code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
