package la;

import java.security.GeneralSecurityException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.KeyStore;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.GCMParameterSpec;

/* JADX INFO: loaded from: classes2.dex */
public final class c implements da.a {

    /* JADX INFO: renamed from: a, reason: collision with root package name */
    public final SecretKey f30195a;

    public c(String str, KeyStore keyStore) throws InvalidKeyException {
        SecretKey secretKey = (SecretKey) keyStore.getKey(str, null);
        this.f30195a = secretKey;
        if (secretKey == null) {
            throw new InvalidKeyException(defpackage.e.i("Keystore cannot load the key with ID: ", str));
        }
    }

    @Override // da.a
    public final byte[] a(byte[] bArr, byte[] bArr2) throws GeneralSecurityException {
        if (bArr.length > 2147483619) {
            throw new GeneralSecurityException("plaintext too long");
        }
        byte[] bArr3 = new byte[bArr.length + 28];
        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
        cipher.init(1, this.f30195a);
        cipher.updateAAD(bArr2);
        if (cipher.doFinal(bArr, 0, bArr.length, bArr3, 12) != bArr.length + 16) {
            throw new GeneralSecurityException("encryption failed: bytesWritten is wrong");
        }
        byte[] iv = cipher.getIV();
        if (iv.length != 12) {
            throw new GeneralSecurityException("IV has unexpected length");
        }
        System.arraycopy(iv, 0, bArr3, 0, 12);
        return bArr3;
    }

    @Override // da.a
    public final byte[] b(byte[] bArr, byte[] bArr2) throws BadPaddingException, NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, InvalidAlgorithmParameterException {
        if (bArr.length < 28) {
            throw new BadPaddingException("ciphertext too short");
        }
        GCMParameterSpec gCMParameterSpec = new GCMParameterSpec(128, bArr, 0, 12);
        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
        cipher.init(2, this.f30195a, gCMParameterSpec);
        cipher.updateAAD(bArr2);
        return cipher.doFinal(bArr, 12, bArr.length - 12);
    }
}