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Data: Fix compressible padding detection and expansion

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zzz
2025-02-04 00:45:53 +00:00
committed by idk
parent b5a8d84dbd
commit 2166d6bf99
1 changed files with 3 additions and 3 deletions
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6
core/java/src/net/i2p/data/KeysAndCert.java
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@ -132,7 +132,7 @@ public class KeysAndCert extends DataStructureImpl {
return _padding;
byte[] rv = new byte[PAD_COMP_LEN * _paddingBlocks];
for (int i = 0; i <_paddingBlocks; i++) {
System.arraycopy(_padding, 0, _paddingBlocks, i * PAD_COMP_LEN, PAD_COMP_LEN);
System.arraycopy(_padding, 0, rv, i * PAD_COMP_LEN, PAD_COMP_LEN);
}
return rv;
}
@ -196,11 +196,11 @@ public class KeysAndCert extends DataStructureImpl {
private void compressPadding() {
_paddingBlocks = 0;
// > 32 and a mult. of 32
if (_padding == null || (_padding.length & (2 * PAD_COMP_LEN) - 1) != PAD_COMP_LEN)
if (_padding == null || _padding.length <= 32 || (_padding.length & (PAD_COMP_LEN - 1)) != 0)
return;
int blks = _padding.length / PAD_COMP_LEN;
for (int i = 1; i < blks; i++) {
if (!DataHelper.eq(_padding, 0, _padding, i, PAD_COMP_LEN)) {
if (!DataHelper.eq(_padding, 0, _padding, i * PAD_COMP_LEN, PAD_COMP_LEN)) {
return;
}
}