83 lines
2.6 KiB
Java
83 lines
2.6 KiB
Java
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package o;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.util.Base64;
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import java.security.Key;
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import java.security.SecureRandom;
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import java.security.spec.AlgorithmParameterSpec;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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/* renamed from: o.cnV, reason: case insensitive filesystem */
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/* loaded from: classes3.dex */
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public class C7395cnV implements Xwp {
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private final SecureRandom a = new SecureRandom();
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private Key b;
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private final Cipher c;
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protected int e() {
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return 16;
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}
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public C7395cnV(Context context, zVr zvr) throws Exception {
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String d = d();
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SharedPreferences sharedPreferences = context.getSharedPreferences("FlutterSecureKeyStorage", 0);
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SharedPreferences.Editor edit = sharedPreferences.edit();
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String string = sharedPreferences.getString(d, null);
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this.c = a();
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if (string != null) {
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try {
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this.b = zvr.c(Base64.decode(string, 0), "AES");
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return;
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} catch (Exception unused) {
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}
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}
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byte[] bArr = new byte[16];
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this.a.nextBytes(bArr);
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SecretKeySpec secretKeySpec = new SecretKeySpec(bArr, "AES");
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this.b = secretKeySpec;
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edit.putString(d, Base64.encodeToString(zvr.a(secretKeySpec), 0));
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edit.apply();
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}
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protected Cipher a() throws Exception {
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return Cipher.getInstance("AES/CBC/PKCS7Padding");
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}
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@Override // o.Xwp
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public final byte[] c(byte[] bArr) throws Exception {
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int e = e();
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byte[] bArr2 = new byte[e];
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this.a.nextBytes(bArr2);
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this.c.init(1, this.b, d(bArr2));
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byte[] doFinal = this.c.doFinal(bArr);
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byte[] bArr3 = new byte[doFinal.length + e];
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System.arraycopy(bArr2, 0, bArr3, 0, e);
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System.arraycopy(doFinal, 0, bArr3, e, doFinal.length);
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return bArr3;
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}
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@Override // o.Xwp
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public final byte[] a(byte[] bArr) throws Exception {
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int e = e();
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byte[] bArr2 = new byte[e];
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System.arraycopy(bArr, 0, bArr2, 0, e);
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AlgorithmParameterSpec d = d(bArr2);
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int length = bArr.length - e();
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byte[] bArr3 = new byte[length];
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System.arraycopy(bArr, e, bArr3, 0, length);
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this.c.init(2, this.b, d);
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return this.c.doFinal(bArr3);
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}
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protected AlgorithmParameterSpec d(byte[] bArr) {
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return new IvParameterSpec(bArr);
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}
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protected String d() {
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return "VGhpcyBpcyB0aGUga2V5IGZvciBhIHNlY3VyZSBzdG9yYWdlIEFFUyBLZXkK";
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}
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}
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