.class public Lcom/nianticlabs/pokemongoplus/util/Crypt;
.super Ljava/lang/Object;
.source "Crypt.java"
# static fields
.field private static final ALGORITHM:Ljava/lang/String; = "AES/CTR/NoPadding"
.field private static final secureRandom:Ljava/security/SecureRandom;
# direct methods
.method static constructor <clinit>()V
.locals 1
.prologue
.line 17
new-instance v0, Ljava/security/SecureRandom;
invoke-direct {v0}, Ljava/security/SecureRandom;-><init>()V
sput-object v0, Lcom/nianticlabs/pokemongoplus/util/Crypt;->secureRandom:Ljava/security/SecureRandom;
return-void
.end method
.method public constructor <init>()V
.locals 0
.prologue
.line 15
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
return-void
.end method
.method public static encryptNonce([B[B)[B
.locals 10
.param p0, "key" # [B
.param p1, "nonce" # [B
.prologue
const/4 v9, 0x0
.line 47
const/16 v6, 0x10
:try_start_0
new-array v4, v6, [B
.line 48
.local v4, "iv":[B
sget-object v6, Lcom/nianticlabs/pokemongoplus/util/Crypt;->secureRandom:Ljava/security/SecureRandom;
invoke-virtual {v6, v4}, Ljava/security/SecureRandom;->nextBytes([B)V
.line 49
new-instance v5, Ljavax/crypto/spec/SecretKeySpec;
const-string v6, "AES"
invoke-direct {v5, p0, v6}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String

V
.line 50
.local v5, "secretKey":Ljavax/crypto/SecretKey;
const-string v6, "AES/CTR/NoPadding"
invoke-static {v6}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String

Ljavax/crypto/Cipher;
move-result-object v0
.line 51
.local v0, "c":Ljavax/crypto/Cipher;
const/4 v6, 0x1
new-instance v7, Ljavax/crypto/spec/IvParameterSpec;
invoke-direct {v7, v4}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V
invoke-virtual {v0, v6, v5, v7}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec

V
.line 52
invoke-virtual {v0, p1}, Ljavax/crypto/Cipher;->doFinal([B)[B
move-result-object v3
.line 53
.local v3, "encrypted":[B
array-length v6, v4
array-length v7, v3
add-int/2addr v6, v7
new-array v1, v6, [B
.line 55
.local v1, "combined":[B
const/4 v6, 0x0
const/4 v7, 0x0
array-length v8, v4
invoke-static {v4, v6, v1, v7, v8}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 56
const/4 v6, 0x0
array-length v7, v4
array-length v8, v3
invoke-static {v3, v6, v1, v7, v8}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
:try_end_0
.catch Ljava/security/GeneralSecurityException; {:try_start_0 .. :try_end_0} :catch_0
.line 62
.end local v0 # "c":Ljavax/crypto/Cipher;
.end local v1 # "combined":[B
.end local v3 # "encrypted":[B
.end local v4 # "iv":[B
.end local v5 # "secretKey":Ljavax/crypto/SecretKey;
:goto_0
return-object v1
.line 59
:catch_0
move-exception v2
.line 60
.local v2, "e":Ljava/security/GeneralSecurityException;
invoke-virtual {v2}, Ljava/security/GeneralSecurityException;->printStackTrace()V
.line 62
new-array v1, v9, [B
goto :goto_0
.end method
.method public static generateNonce()[B
.locals 2
.prologue
.line 20
const/16 v1, 0x10
new-array v0, v1, [B
.line 21
.local v0, "nonce":[B
sget-object v1, Lcom/nianticlabs/pokemongoplus/util/Crypt;->secureRandom:Ljava/security/SecureRandom;
invoke-virtual {v1, v0}, Ljava/security/SecureRandom;->nextBytes([B)V
.line 22
return-object v0
.end method
.method public static getPersistedByteArray(Ljava/lang/String

[B
.locals 5
.param p0, "key" # Ljava/lang/String;
.prologue
const/4 v4, 0x0
.line 73
invoke-static {}, Lcom/nianticlabs/pokemongoplus/util/Crypt;->getPreferences()Landroid/content/SharedPreferences;
move-result-object v2
const/4 v3, 0x0
invoke-interface {v2, p0, v3}, Landroid/content/SharedPreferences;->getString(Ljava/lang/String;Ljava/lang/String

Ljava/lang/String;
move-result-object v1
.line 74
.local v1, "encoded":Ljava/lang/String;
if-eqz v1, :cond_0
.line 75
invoke-static {v1, v4}, Landroid/util/Base64;->decode(Ljava/lang/String;I)[B
move-result-object v0
.line 78
:goto_0
return-object v0
:cond_0
new-array v0, v4, [B
goto :goto_0
.end method
.method private static getPreferences()Landroid/content/SharedPreferences;
.locals 3
.prologue
.line 83
sget-object v0, Lcom/nianticlabs/pokemongoplus/bridge/BackgroundBridge;->currentContext:Landroid/content/Context;
const-string v1, "pgp"
const/4 v2, 0x0
invoke-virtual {v0, v1, v2}, Landroid/content/Context;->getSharedPreferences(Ljava/lang/String;I)Landroid/content/SharedPreferences;
move-result-object v0
return-object v0
.end method
.method public static persistByteArray(Ljava/lang/String;[B)V
.locals 2
.param p0, "key" # Ljava/lang/String;
.param p1, "bytes" # [B
.prologue
.line 66
const/4 v1, 0x0
invoke-static {p1, v1}, Landroid/util/Base64;->encodeToString([BI)Ljava/lang/String;
move-result-object v0
.line 67
.local v0, "encoded":Ljava/lang/String;
invoke-static {}, Lcom/nianticlabs/pokemongoplus/util/Crypt;->getPreferences()Landroid/content/SharedPreferences;
move-result-object v1
invoke-interface {v1}, Landroid/content/SharedPreferences;->edit()Landroid/content/SharedPreferences$Editor;
move-result-object v1
.line 68
invoke-interface {v1, p0, v0}, Landroid/content/SharedPreferences$Editor;->putString(Ljava/lang/String;Ljava/lang/String

Landroid/content/SharedPreferences$Editor;
move-result-object v1
.line 69
invoke-interface {v1}, Landroid/content/SharedPreferences$Editor;->commit()Z
.line 70
return-void
.end method
.method public static unencryptNonce([B[B)[B
.locals 10
.param p0, "key" # [B
.param p1, "encrypted" # [B
.prologue
const/4 v9, 0x0
.line 27
array-length v6, p1
const/16 v7, 0x20
if-ne v6, v7, :cond_0
.line 29
:try_start_0
new-instance v5, Ljavax/crypto/spec/SecretKeySpec;
const-string v6, "AES"
invoke-direct {v5, p0, v6}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String

V
.line 30
.local v5, "secretKey":Ljavax/crypto/SecretKey;
const/16 v6, 0x10
new-array v3, v6, [B
.line 31
.local v3, "iv":[B
const/16 v6, 0x10
new-array v4, v6, [B
.line 32
.local v4, "nonce":[B
const/4 v6, 0x0
const/4 v7, 0x0
const/16 v8, 0x10
invoke-static {p1, v6, v3, v7, v8}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 33
const/16 v6, 0x10
const/4 v7, 0x0
const/16 v8, 0x10
invoke-static {p1, v6, v4, v7, v8}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 34
const-string v6, "AES/CTR/NoPadding"
invoke-static {v6}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String

Ljavax/crypto/Cipher;
move-result-object v0
.line 35
.local v0, "c":Ljavax/crypto/Cipher;
const/4 v6, 0x2
new-instance v7, Ljavax/crypto/spec/IvParameterSpec;
invoke-direct {v7, v3}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V
invoke-virtual {v0, v6, v5, v7}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec

V
.line 36
invoke-virtual {v0, v4}, Ljavax/crypto/Cipher;->doFinal([B)[B
:try_end_0
.catch Ljava/security/GeneralSecurityException; {:try_start_0 .. :try_end_0} :catch_0
move-result-object v1
.line 42
.end local v0 # "c":Ljavax/crypto/Cipher;
.end local v3 # "iv":[B
.end local v4 # "nonce":[B
.end local v5 # "secretKey":Ljavax/crypto/SecretKey;
:goto_0
return-object v1
.line 38
:catch_0
move-exception v2
.line 39
.local v2, "e":Ljava/security/GeneralSecurityException;
invoke-virtual {v2}, Ljava/security/GeneralSecurityException;->printStackTrace()V
.line 42
.end local v2 # "e":Ljava/security/GeneralSecurityException;
:cond_0
new-array v1, v9, [B
goto :goto_0
.end method