package fa;

import com.google.android.gms.internal.ads.cz1;
import com.google.android.gms.measurement.internal.c2;
import com.google.crypto.tink.config.internal.TinkFipsUtil$AlgorithmFipsCompatibility;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import javax.crypto.AEADBadTagException;

/* JADX INFO: loaded from: classes2.dex */
public abstract class n {

    /* JADX INFO: renamed from: a, reason: collision with root package name */
    public final cz1 f26019a;

    /* JADX INFO: renamed from: b, reason: collision with root package name */
    public final cz1 f26020b;

    public n(byte[] bArr) throws GeneralSecurityException {
        cz1 lVar;
        cz1 lVar2;
        if (!TinkFipsUtil$AlgorithmFipsCompatibility.f23814a.a()) {
            throw new GeneralSecurityException("Can not use ChaCha20Poly1305 in FIPS-mode.");
        }
        int i10 = ((m) this).f26018c;
        switch (i10) {
            case 0:
                lVar = new l(bArr, 1, 2);
                break;
            default:
                lVar = new o(bArr, 1, 2);
                break;
        }
        this.f26019a = lVar;
        switch (i10) {
            case 0:
                lVar2 = new l(bArr, 0, 2);
                break;
            default:
                lVar2 = new o(bArr, 0, 2);
                break;
        }
        this.f26020b = lVar2;
    }

    public static byte[] c(ByteBuffer byteBuffer, byte[] bArr) {
        int length = bArr.length % 16 == 0 ? bArr.length : (bArr.length + 16) - (bArr.length % 16);
        int iRemaining = byteBuffer.remaining();
        int i10 = iRemaining % 16;
        int i11 = (i10 == 0 ? iRemaining : (iRemaining + 16) - i10) + length;
        ByteBuffer byteBufferOrder = ByteBuffer.allocate(i11 + 16).order(ByteOrder.LITTLE_ENDIAN);
        byteBufferOrder.put(bArr);
        byteBufferOrder.position(length);
        byteBufferOrder.put(byteBuffer);
        byteBufferOrder.position(i11);
        byteBufferOrder.putLong(bArr.length);
        byteBufferOrder.putLong(iRemaining);
        return byteBufferOrder.array();
    }

    public final byte[] a(ByteBuffer byteBuffer, byte[] bArr, byte[] bArr2) throws GeneralSecurityException {
        if (byteBuffer.remaining() < 16) {
            throw new GeneralSecurityException("ciphertext too short");
        }
        int iPosition = byteBuffer.position();
        byte[] bArr3 = new byte[16];
        byteBuffer.position(byteBuffer.limit() - 16);
        byteBuffer.get(bArr3);
        byteBuffer.position(iPosition);
        byteBuffer.limit(byteBuffer.limit() - 16);
        if (bArr2 == null) {
            bArr2 = new byte[0];
        }
        try {
            byte[] bArr4 = new byte[32];
            this.f26020b.a(0, bArr).get(bArr4);
            if (!MessageDigest.isEqual(c2.e(bArr4, c(byteBuffer, bArr2)), bArr3)) {
                throw new GeneralSecurityException("invalid MAC");
            }
            byteBuffer.position(iPosition);
            cz1 cz1Var = this.f26019a;
            cz1Var.getClass();
            ByteBuffer byteBufferAllocate = ByteBuffer.allocate(byteBuffer.remaining());
            cz1Var.e(bArr, byteBufferAllocate, byteBuffer);
            return byteBufferAllocate.array();
        } catch (GeneralSecurityException e10) {
            throw new AEADBadTagException(e10.toString());
        }
    }

    public final void b(ByteBuffer byteBuffer, byte[] bArr, byte[] bArr2, byte[] bArr3) throws GeneralSecurityException {
        if (byteBuffer.remaining() < bArr2.length + 16) {
            throw new IllegalArgumentException("Given ByteBuffer output is too small");
        }
        int iPosition = byteBuffer.position();
        cz1 cz1Var = this.f26019a;
        cz1Var.getClass();
        if (byteBuffer.remaining() < bArr2.length) {
            throw new IllegalArgumentException("Given ByteBuffer output is too small");
        }
        cz1Var.e(bArr, byteBuffer, ByteBuffer.wrap(bArr2));
        byteBuffer.position(iPosition);
        byteBuffer.limit(byteBuffer.limit() - 16);
        if (bArr3 == null) {
            bArr3 = new byte[0];
        }
        byte[] bArr4 = new byte[32];
        this.f26020b.a(0, bArr).get(bArr4);
        byte[] bArrE = c2.e(bArr4, c(byteBuffer, bArr3));
        byteBuffer.limit(byteBuffer.limit() + 16);
        byteBuffer.put(bArrE);
    }
}