56 lines
2.0 KiB
Java
56 lines
2.0 KiB
Java
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package com.google.android.gms.internal.p002firebaseauthapi;
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import java.security.GeneralSecurityException;
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import java.security.InvalidAlgorithmParameterException;
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import java.util.Arrays;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.SecretKeySpec;
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/* loaded from: classes2.dex */
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public final class zzql implements zzjk {
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private final SecretKey zza;
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private final byte[] zzb;
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private final byte[] zzc;
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public zzql(byte[] bArr) throws GeneralSecurityException {
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zzqs.zzb(bArr.length);
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SecretKeySpec secretKeySpec = new SecretKeySpec(bArr, "AES");
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this.zza = secretKeySpec;
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Cipher zzb = zzb();
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zzb.init(1, secretKeySpec);
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byte[] zzb2 = zziz.zzb(zzb.doFinal(new byte[16]));
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this.zzb = zzb2;
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this.zzc = zziz.zzb(zzb2);
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}
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private static Cipher zzb() throws GeneralSecurityException {
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if (!zzdv.zza(1)) {
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throw new GeneralSecurityException("Can not use AES-CMAC in FIPS-mode.");
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}
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return (Cipher) zzpz.zza.zza("AES/ECB/NoPadding");
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}
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@Override // com.google.android.gms.internal.p002firebaseauthapi.zzjk
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public final byte[] zza(byte[] bArr, int i) throws GeneralSecurityException {
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byte[] zzd;
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if (i > 16) {
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throw new InvalidAlgorithmParameterException("outputLength too large, max is 16 bytes");
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}
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Cipher zzb = zzb();
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zzb.init(1, this.zza);
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int length = bArr.length;
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int max = Math.max(1, (int) Math.ceil(length / 16.0d));
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if (max * 16 == length) {
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zzd = zzpp.zze(bArr, (max - 1) * 16, this.zzb, 0, 16);
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} else {
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zzd = zzpp.zzd(zziz.zza(Arrays.copyOfRange(bArr, (max - 1) * 16, length)), this.zzc);
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}
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byte[] bArr2 = new byte[16];
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for (int i2 = 0; i2 < max - 1; i2++) {
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bArr2 = zzb.doFinal(zzpp.zze(bArr2, 0, bArr, i2 * 16, 16));
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}
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return Arrays.copyOf(zzb.doFinal(zzpp.zzd(zzd, bArr2)), i);
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}
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}
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