47 lines
1.9 KiB
Java
47 lines
1.9 KiB
Java
|
package org.bouncycastle.crypto.engines;
|
||
|
|
|
||
|
|
import org.bouncycastle.util.Pack;
|
||
|
|
|
||
|
|
/* loaded from: classes6.dex */
|
||
|
|
public class XSalsa20Engine extends Salsa20Engine {
|
||
|
|
@Override // org.bouncycastle.crypto.engines.Salsa20Engine
|
||
|
|
protected int getNonceSize() {
|
||
|
|
return 24;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* JADX INFO: Access modifiers changed from: protected */
|
||
|
|
@Override // org.bouncycastle.crypto.engines.Salsa20Engine
|
||
|
|
public void setKey(byte[] bArr, byte[] bArr2) {
|
||
|
|
if (bArr == null) {
|
||
|
|
StringBuilder sb = new StringBuilder();
|
||
|
|
sb.append(getAlgorithmName());
|
||
|
|
sb.append(" doesn't support re-init with null key");
|
||
|
|
throw new IllegalArgumentException(sb.toString());
|
||
|
|
}
|
||
|
|
if (bArr.length != 32) {
|
||
|
|
StringBuilder sb2 = new StringBuilder();
|
||
|
|
sb2.append(getAlgorithmName());
|
||
|
|
sb2.append(" requires a 256 bit key");
|
||
|
|
throw new IllegalArgumentException(sb2.toString());
|
||
|
|
}
|
||
|
|
super.setKey(bArr, bArr2);
|
||
|
|
Pack.littleEndianToInt(bArr2, 8, this.engineState, 8, 2);
|
||
|
|
int[] iArr = new int[this.engineState.length];
|
||
|
|
salsaCore(20, this.engineState, iArr);
|
||
|
|
this.engineState[1] = iArr[0] - this.engineState[0];
|
||
|
|
this.engineState[2] = iArr[5] - this.engineState[5];
|
||
|
|
this.engineState[3] = iArr[10] - this.engineState[10];
|
||
|
|
this.engineState[4] = iArr[15] - this.engineState[15];
|
||
|
|
this.engineState[11] = iArr[6] - this.engineState[6];
|
||
|
|
this.engineState[12] = iArr[7] - this.engineState[7];
|
||
|
|
this.engineState[13] = iArr[8] - this.engineState[8];
|
||
|
|
this.engineState[14] = iArr[9] - this.engineState[9];
|
||
|
|
Pack.littleEndianToInt(bArr2, 16, this.engineState, 6, 2);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override // org.bouncycastle.crypto.engines.Salsa20Engine, org.bouncycastle.crypto.StreamCipher
|
||
|
|
public String getAlgorithmName() {
|
||
|
|
return "XSalsa20";
|
||
|
|
}
|
||
|
|
}
|