278 lines
6.2 KiB
Smali
278 lines
6.2 KiB
Smali
.class public final Lcom/google/android/gms/internal/ads/zzdyn;
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.super Ljava/lang/Object;
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.source "com.google.android.gms:play-services-ads@@19.1.0"
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# interfaces
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.implements Lcom/google/android/gms/internal/ads/zzdsb;
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# static fields
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.field private static final zzhqg:Ljava/lang/ThreadLocal;
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.annotation system Ldalvik/annotation/Signature;
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value = {
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"Ljava/lang/ThreadLocal<",
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"Ljavax/crypto/Cipher;",
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">;"
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}
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.end annotation
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.end field
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# instance fields
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.field private final zzhqc:Ljavax/crypto/SecretKey;
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# direct methods
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.method public static constructor <clinit>()V
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.locals 1
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.line 1
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new-instance v0, Lcom/google/android/gms/internal/ads/zzdyq;
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invoke-direct {v0}, Lcom/google/android/gms/internal/ads/zzdyq;-><init>()V
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sput-object v0, Lcom/google/android/gms/internal/ads/zzdyn;->zzhqg:Ljava/lang/ThreadLocal;
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return-void
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.end method
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.method public constructor <init>([B)V
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.locals 2
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/security/GeneralSecurityException;
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}
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.end annotation
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.line 1
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invoke-direct {p0}, Ljava/lang/Object;-><init>()V
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.line 2
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array-length v0, p1
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invoke-static {v0}, Lcom/google/android/gms/internal/ads/zzdzy;->zzfj(I)V
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.line 3
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new-instance v0, Ljavax/crypto/spec/SecretKeySpec;
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const-string v1, "AES"
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invoke-direct {v0, p1, v1}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V
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iput-object v0, p0, Lcom/google/android/gms/internal/ads/zzdyn;->zzhqc:Ljavax/crypto/SecretKey;
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return-void
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.end method
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.method private static zzf([BII)Ljava/security/spec/AlgorithmParameterSpec;
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.locals 2
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/security/GeneralSecurityException;
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}
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.end annotation
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const/4 p1, 0x0
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:try_start_0
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const-string v0, "javax.crypto.spec.GCMParameterSpec"
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.line 1
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invoke-static {v0}, Ljava/lang/Class;->forName(Ljava/lang/String;)Ljava/lang/Class;
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.line 2
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new-instance v0, Ljavax/crypto/spec/GCMParameterSpec;
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const/16 v1, 0x80
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invoke-direct {v0, v1, p0, p1, p2}, Ljavax/crypto/spec/GCMParameterSpec;-><init>(I[BII)V
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:try_end_0
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.catch Ljava/lang/ClassNotFoundException; {:try_start_0 .. :try_end_0} :catch_0
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return-object v0
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.line 3
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:catch_0
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invoke-static {}, Lcom/google/android/gms/internal/ads/zzdzv;->zzbcc()Z
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move-result v0
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if-eqz v0, :cond_0
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.line 4
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new-instance v0, Ljavax/crypto/spec/IvParameterSpec;
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invoke-direct {v0, p0, p1, p2}, Ljavax/crypto/spec/IvParameterSpec;-><init>([BII)V
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return-object v0
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.line 5
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:cond_0
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new-instance p0, Ljava/security/GeneralSecurityException;
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const-string p1, "cannot use AES-GCM: javax.crypto.spec.GCMParameterSpec not found"
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invoke-direct {p0, p1}, Ljava/security/GeneralSecurityException;-><init>(Ljava/lang/String;)V
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throw p0
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.end method
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# virtual methods
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.method public final zzc([B[B)[B
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.locals 11
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Ljava/security/GeneralSecurityException;
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}
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.end annotation
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.line 1
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array-length v0, p1
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const v1, 0x7fffffe3
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if-gt v0, v1, :cond_2
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.line 2
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array-length v0, p1
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const/16 v1, 0xc
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add-int/2addr v0, v1
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const/16 v2, 0x10
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add-int/2addr v0, v2
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new-array v0, v0, [B
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.line 3
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invoke-static {v1}, Lcom/google/android/gms/internal/ads/zzdzt;->zzfi(I)[B
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move-result-object v3
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const/4 v9, 0x0
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.line 4
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invoke-static {v3, v9, v0, v9, v1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
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.line 5
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array-length v1, v3
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invoke-static {v3, v9, v1}, Lcom/google/android/gms/internal/ads/zzdyn;->zzf([BII)Ljava/security/spec/AlgorithmParameterSpec;
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move-result-object v1
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.line 6
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sget-object v3, Lcom/google/android/gms/internal/ads/zzdyn;->zzhqg:Ljava/lang/ThreadLocal;
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invoke-virtual {v3}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;
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move-result-object v4
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check-cast v4, Ljavax/crypto/Cipher;
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iget-object v5, p0, Lcom/google/android/gms/internal/ads/zzdyn;->zzhqc:Ljavax/crypto/SecretKey;
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const/4 v10, 0x1
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invoke-virtual {v4, v10, v5, v1}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V
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if-eqz p2, :cond_0
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.line 7
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array-length v1, p2
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if-eqz v1, :cond_0
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.line 8
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invoke-virtual {v3}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;
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move-result-object v1
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check-cast v1, Ljavax/crypto/Cipher;
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invoke-virtual {v1, p2}, Ljavax/crypto/Cipher;->updateAAD([B)V
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.line 9
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:cond_0
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invoke-virtual {v3}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;
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move-result-object p2
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move-object v3, p2
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check-cast v3, Ljavax/crypto/Cipher;
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const/4 v5, 0x0
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array-length v6, p1
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const/16 v8, 0xc
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move-object v4, p1
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move-object v7, v0
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invoke-virtual/range {v3 .. v8}, Ljavax/crypto/Cipher;->doFinal([BII[BI)I
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move-result p2
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.line 10
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array-length v1, p1
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add-int/2addr v1, v2
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if-ne p2, v1, :cond_1
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return-object v0
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.line 11
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:cond_1
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array-length p1, p1
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sub-int/2addr p2, p1
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.line 12
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new-instance p1, Ljava/security/GeneralSecurityException;
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const/4 v0, 0x2
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new-array v0, v0, [Ljava/lang/Object;
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.line 13
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invoke-static {v2}, Ljava/lang/Integer;->valueOf(I)Ljava/lang/Integer;
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move-result-object v1
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aput-object v1, v0, v9
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invoke-static {p2}, Ljava/lang/Integer;->valueOf(I)Ljava/lang/Integer;
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move-result-object p2
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aput-object p2, v0, v10
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const-string p2, "encryption failed; GCM tag must be %s bytes, but got only %s bytes"
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.line 14
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invoke-static {p2, v0}, Ljava/lang/String;->format(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
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move-result-object p2
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invoke-direct {p1, p2}, Ljava/security/GeneralSecurityException;-><init>(Ljava/lang/String;)V
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throw p1
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.line 15
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:cond_2
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new-instance p1, Ljava/security/GeneralSecurityException;
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const-string p2, "plaintext too long"
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invoke-direct {p1, p2}, Ljava/security/GeneralSecurityException;-><init>(Ljava/lang/String;)V
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throw p1
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.end method
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