103 lines
3.3 KiB
Java
103 lines
3.3 KiB
Java
package com.google.android.gms.internal.p002firebaseauthapi;
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import java.security.GeneralSecurityException;
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import javax.crypto.Mac;
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import javax.crypto.spec.SecretKeySpec;
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/* loaded from: classes2.dex */
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final class zzes {
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private final String zza;
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private final byte[] zzf(byte[] bArr, byte[] bArr2, int i) throws GeneralSecurityException {
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Mac mac = (Mac) zzpz.zzb.zza(this.zza);
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if (i > mac.getMacLength() * 255) {
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throw new GeneralSecurityException("size too large");
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}
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byte[] bArr3 = new byte[i];
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mac.init(new SecretKeySpec(bArr, this.zza));
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byte[] bArr4 = new byte[0];
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int i2 = 1;
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int i3 = 0;
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while (true) {
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mac.update(bArr4);
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mac.update(bArr2);
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mac.update((byte) i2);
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bArr4 = mac.doFinal();
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int length = bArr4.length;
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int i4 = i3 + length;
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if (i4 < i) {
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System.arraycopy(bArr4, 0, bArr3, i3, length);
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i2++;
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i3 = i4;
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} else {
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System.arraycopy(bArr4, 0, bArr3, i3, i - i3);
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return bArr3;
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}
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}
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}
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private final byte[] zzg(byte[] bArr, byte[] bArr2) throws GeneralSecurityException {
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Mac mac = (Mac) zzpz.zzb.zza(this.zza);
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if (bArr2 == null || bArr2.length == 0) {
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mac.init(new SecretKeySpec(new byte[mac.getMacLength()], this.zza));
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} else {
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mac.init(new SecretKeySpec(bArr2, this.zza));
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}
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return mac.doFinal(bArr);
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public final int zza() throws GeneralSecurityException {
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return Mac.getInstance(this.zza).getMacLength();
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}
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public final byte[] zzb(byte[] bArr, byte[] bArr2, String str, byte[] bArr3, String str2, byte[] bArr4, int i) throws GeneralSecurityException {
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return zzf(zzg(zzff.zze("eae_prk", bArr2, bArr4), null), zzff.zzf("shared_secret", bArr3, bArr4, i), i);
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}
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public final byte[] zzd(byte[] bArr, byte[] bArr2, String str, byte[] bArr3, int i) throws GeneralSecurityException {
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return zzf(bArr, zzff.zzf(str, bArr2, bArr3, i), i);
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}
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public final byte[] zze(byte[] bArr, byte[] bArr2, String str, byte[] bArr3) throws GeneralSecurityException {
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return zzg(zzff.zze(str, bArr2, bArr3), bArr);
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}
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public final byte[] zzc() throws GeneralSecurityException {
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char c;
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String str = this.zza;
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int hashCode = str.hashCode();
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if (hashCode == 984523022) {
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if (str.equals("HmacSha256")) {
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c = 0;
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}
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c = 65535;
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} else if (hashCode != 984524074) {
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if (hashCode == 984525777 && str.equals("HmacSha512")) {
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c = 2;
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}
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c = 65535;
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} else {
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if (str.equals("HmacSha384")) {
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c = 1;
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}
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c = 65535;
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}
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if (c == 0) {
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return zzff.zzf;
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}
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if (c == 1) {
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return zzff.zzg;
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}
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if (c == 2) {
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return zzff.zzh;
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}
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throw new GeneralSecurityException("Could not determine HPKE KDF ID");
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public zzes(String str) {
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this.zza = str;
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}
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}
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