package o;

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import java.io.CharConversionException;
import java.io.FileNotFoundException;
import java.io.IOException;

/* loaded from: classes2.dex */
public final class Tll implements gEg {
    private final SharedPreferences a;
    private final String b;

    public Tll(Context context, String str, String str2) throws IOException {
        if (str == null) {
            throw new IllegalArgumentException("keysetName cannot be null");
        }
        this.b = str;
        Context applicationContext = context.getApplicationContext();
        if (str2 == null) {
            this.a = PreferenceManager.getDefaultSharedPreferences(applicationContext);
        } else {
            this.a = applicationContext.getSharedPreferences(str2, 0);
        }
    }

    private byte[] d() throws IOException {
        try {
            String string = this.a.getString(this.b, null);
            if (string == null) {
                throw new FileNotFoundException(String.format("can't read keyset; the pref value %s does not exist", this.b));
            }
            if (string.length() % 2 != 0) {
                throw new IllegalArgumentException("Expected a string of even length");
            }
            int length = string.length() / 2;
            byte[] bArr = new byte[length];
            for (int i = 0; i < length; i++) {
                int i2 = i << 1;
                int digit = Character.digit(string.charAt(i2), 16);
                int digit2 = Character.digit(string.charAt(i2 + 1), 16);
                if (digit == -1 || digit2 == -1) {
                    throw new IllegalArgumentException("input is not hexadecimal");
                }
                bArr[i] = (byte) ((digit << 4) + digit2);
            }
            return bArr;
        } catch (ClassCastException | IllegalArgumentException unused) {
            throw new CharConversionException(String.format("can't read keyset; the pref value %s is not a valid hex string", this.b));
        }
    }

    @Override // o.gEg
    public final Yzk c() throws IOException {
        return Yzk.c(d(), C1458aEp.c());
    }

    @Override // o.gEg
    public final C0587KSr e() throws IOException {
        return C0587KSr.b(d(), C1458aEp.c());
    }
}