72 lines
2.8 KiB
Java
72 lines
2.8 KiB
Java
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package com.pingan.ai;
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import java.security.InvalidKeyException;
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import java.security.Key;
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import java.security.KeyFactory;
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import java.security.NoSuchAlgorithmException;
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import java.security.spec.InvalidKeySpecException;
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import java.security.spec.PKCS8EncodedKeySpec;
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import java.security.spec.X509EncodedKeySpec;
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import javax.crypto.BadPaddingException;
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import javax.crypto.Cipher;
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import javax.crypto.IllegalBlockSizeException;
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import javax.crypto.NoSuchPaddingException;
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/* loaded from: classes3.dex */
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public final class w {
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public static byte[] a(byte[] bArr, byte[] bArr2, int i, String str) {
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return a(bArr, bArr2, i, str, true);
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}
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public static byte[] a(byte[] bArr, byte[] bArr2, int i, String str, boolean z) {
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Key generatePrivate;
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if (bArr != null && bArr.length != 0 && bArr2 != null && bArr2.length != 0) {
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try {
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if (z) {
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generatePrivate = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(bArr2));
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} else {
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generatePrivate = KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(bArr2));
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}
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if (generatePrivate == null) {
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return null;
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}
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Cipher cipher = Cipher.getInstance(str);
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cipher.init(z ? 1 : 2, generatePrivate);
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int length = bArr.length;
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int i2 = i / 8;
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if (z && str.toLowerCase().endsWith("pkcs1padding")) {
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i2 -= 11;
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}
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int i3 = length / i2;
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if (i3 > 0) {
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byte[] bArr3 = new byte[0];
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byte[] bArr4 = new byte[i2];
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int i4 = 0;
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for (int i5 = 0; i5 < i3; i5++) {
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System.arraycopy(bArr, i4, bArr4, 0, i2);
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bArr3 = a(bArr3, cipher.doFinal(bArr4));
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i4 += i2;
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}
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if (i4 == length) {
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return bArr3;
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}
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int i6 = length - i4;
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byte[] bArr5 = new byte[i6];
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System.arraycopy(bArr, i4, bArr5, 0, i6);
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return a(bArr3, cipher.doFinal(bArr5));
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}
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return cipher.doFinal(bArr);
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} catch (InvalidKeyException | NoSuchAlgorithmException | InvalidKeySpecException | BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException unused) {
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}
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}
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return null;
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}
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public static byte[] a(byte[] bArr, byte[] bArr2) {
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byte[] bArr3 = new byte[bArr.length + bArr2.length];
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System.arraycopy(bArr, 0, bArr3, 0, bArr.length);
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System.arraycopy(bArr2, 0, bArr3, bArr.length, bArr2.length);
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return bArr3;
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}
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}
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