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