65 lines
2.5 KiB
Java
65 lines
2.5 KiB
Java
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package o;
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import java.security.GeneralSecurityException;
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import java.security.NoSuchAlgorithmException;
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import java.security.spec.InvalidKeySpecException;
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import java.util.Arrays;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.SecretKeyFactory;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.PBEKeySpec;
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import javax.crypto.spec.SecretKeySpec;
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/* loaded from: classes2.dex */
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public final class wac {
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public static SecretKey c(WuW wuW) throws NoSuchAlgorithmException, InvalidKeySpecException {
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if (wuW == null || !wuW.a()) {
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throw new IllegalArgumentException("invalid data for generating the key.");
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}
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int i = wuW.i;
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byte[] b = KzA.b(wuW.d);
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byte[] b2 = KzA.b(wuW.e);
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return new SecretKeySpec(SecretKeyFactory.getInstance(wuW.c).generateSecret(new PBEKeySpec(KzA.e(d(c(d(c(b, -4), b2), 6), KzA.b(wuW.b))).toCharArray(), KzA.b(wuW.a), wuW.i, wuW.j << 3)).getEncoded(), "AES");
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}
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private static byte[] d(byte[] bArr, byte[] bArr2) {
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if (bArr == null || bArr2 == null) {
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throw new NullPointerException("left or right must not be null.");
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}
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if (bArr.length != bArr2.length) {
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throw new IllegalArgumentException("left and right must be the same length.");
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}
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byte[] bArr3 = new byte[bArr.length];
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for (int i = 0; i < bArr.length; i++) {
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bArr3[i] = (byte) (bArr[i] ^ bArr2[i]);
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}
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return bArr3;
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}
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private static byte[] c(byte[] bArr, int i) {
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if (bArr == null) {
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throw new NullPointerException("bytes must not be null.");
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}
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for (int i2 = 0; i2 < bArr.length; i2++) {
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if (i < 0) {
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bArr[i2] = (byte) (bArr[i2] << (-i));
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} else {
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bArr[i2] = (byte) (bArr[i2] >> i);
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}
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}
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return bArr;
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public static byte[] e(SecretKey secretKey, byte[] bArr) throws GeneralSecurityException {
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if (secretKey == null || bArr == null) {
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throw new NullPointerException("key or cipherText must not be null.");
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}
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byte[] copyOfRange = Arrays.copyOfRange(bArr, 1, 17);
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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cipher.init(2, secretKey, new IvParameterSpec(copyOfRange));
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return cipher.doFinal(bArr, copyOfRange.length + 1, (bArr.length - copyOfRange.length) - 1);
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}
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}
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