package f7;

import java.nio.charset.StandardCharsets;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

/* loaded from: classes2.dex */
public abstract class a {

    /* renamed from: a, reason: collision with root package name */
    public static byte[] f9592a = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

    /* renamed from: b, reason: collision with root package name */
    private static final char[] f9593b = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

    /* renamed from: c, reason: collision with root package name */
    public static SecretKeySpec f9594c;

    public static String a(String str, String str2) {
        byte[] bytes = str.getBytes(StandardCharsets.UTF_8);
        String substring = str2.substring(0, 16);
        if (f9594c == null) {
            byte[] bArr = new byte[16];
            byte[] bytes2 = str2.getBytes(StandardCharsets.UTF_8);
            int length = bytes2.length;
            System.arraycopy(bytes2, 0, bArr, 0, length <= 16 ? length : 16);
            f9594c = new SecretKeySpec(bArr, "AES");
        }
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(1, f9594c, new IvParameterSpec(substring.getBytes()));
        return new String(b(cipher.doFinal(bytes)));
    }

    public static char[] b(byte[] bArr) {
        char[] cArr = new char[bArr.length << 1];
        int i10 = 0;
        for (byte b10 : bArr) {
            int i11 = i10 + 1;
            char[] cArr2 = f9593b;
            cArr[i10] = cArr2[(b10 & 240) >>> 4];
            i10 = i11 + 1;
            cArr[i11] = cArr2[b10 & 15];
        }
        return cArr;
    }
}