81 lines
3.1 KiB
Java
81 lines
3.1 KiB
Java
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package o;
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import java.security.GeneralSecurityException;
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import java.security.spec.AlgorithmParameterSpec;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.GCMParameterSpec;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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/* loaded from: classes2.dex */
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public final class OxE implements InterfaceC4280bVg {
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private static final ThreadLocal<Cipher> e = new ThreadLocal<Cipher>() { // from class: o.OxE.5
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@Override // java.lang.ThreadLocal
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protected final /* synthetic */ Cipher initialValue() {
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return d();
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}
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private static Cipher d() {
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try {
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return YYT.a.e("AES/GCM-SIV/NoPadding");
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} catch (GeneralSecurityException e2) {
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throw new IllegalStateException(e2);
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}
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}
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};
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private final SecretKey d;
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public OxE(byte[] bArr) throws GeneralSecurityException {
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ifG.e(bArr.length);
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this.d = new SecretKeySpec(bArr, "AES");
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}
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@Override // o.InterfaceC4280bVg
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public final byte[] b(byte[] bArr, byte[] bArr2) throws GeneralSecurityException {
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if (bArr.length > 2147483619) {
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throw new GeneralSecurityException("plaintext too long");
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}
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byte[] bArr3 = new byte[bArr.length + 28];
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byte[] b = YTf.b(12);
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System.arraycopy(b, 0, bArr3, 0, 12);
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AlgorithmParameterSpec e2 = e(b, b.length);
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ThreadLocal<Cipher> threadLocal = e;
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threadLocal.get().init(1, this.d, e2);
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if (bArr2 != null && bArr2.length != 0) {
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threadLocal.get().updateAAD(bArr2);
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}
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int doFinal = threadLocal.get().doFinal(bArr, 0, bArr.length, bArr3, 12);
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if (doFinal == bArr.length + 16) {
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return bArr3;
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}
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throw new GeneralSecurityException(String.format("encryption failed; GCM tag must be %s bytes, but got only %s bytes", 16, Integer.valueOf(doFinal - bArr.length)));
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}
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@Override // o.InterfaceC4280bVg
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public final byte[] d(byte[] bArr, byte[] bArr2) throws GeneralSecurityException {
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if (bArr.length < 28) {
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throw new GeneralSecurityException("ciphertext too short");
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}
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AlgorithmParameterSpec e2 = e(bArr, 12);
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ThreadLocal<Cipher> threadLocal = e;
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threadLocal.get().init(2, this.d, e2);
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if (bArr2 != null && bArr2.length != 0) {
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threadLocal.get().updateAAD(bArr2);
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}
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return threadLocal.get().doFinal(bArr, 12, bArr.length - 12);
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}
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private static AlgorithmParameterSpec e(byte[] bArr, int i) throws GeneralSecurityException {
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try {
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Class.forName("javax.crypto.spec.GCMParameterSpec");
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return new GCMParameterSpec(128, bArr, 0, i);
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} catch (ClassNotFoundException unused) {
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if ("The Android Project".equals(System.getProperty("java.vendor"))) {
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return new IvParameterSpec(bArr, 0, i);
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}
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throw new GeneralSecurityException("cannot use AES-GCM: javax.crypto.spec.GCMParameterSpec not found");
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}
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}
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}
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