RCDHCodecTool.smali

.class public Lio/rong/message/utils/RCDHCodecTool;
.super Ljava/lang/Object;
.source "RCDHCodecTool.java"


# annotations
.annotation system Ldalvik/annotation/MemberClasses;
    value = {
        Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;,
        Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;,
        Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;
    }
.end annotation


# static fields
.field private static final TAG:Ljava/lang/String; = "io.rong.message.utils.RCDHCodecTool"

.field private static final gStrDefault:Ljava/lang/String; = "3"

.field private static final lSize:I = 0x800

.field private static final pStrDefault:Ljava/lang/String; = "25135566567101483196994790440833279750474660393232382279277736257066266618532493517139001963526957179514521981877335815379755618191324858392834843718048308951653115284529736874534289456833723962912807104017411854314007953484461899139734367756070456068592886771130491355511301923675421649355211882120329692353507392677087555292357140606251171702417804959957862991259464749806480821163999054978911727901705780417863120490095024926067731615229486812312187386108568833026386220686253160504779704721744600638258183939573405528962511242337923530869616215532193967628076922234051908977996352800560160181197923404454023908443"

.field private static sToolBag:Ljava/util/Map;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "Ljava/util/Map<",
            "Ljava/lang/String;",
            "Lio/rong/message/utils/RCDHCodecTool;",
            ">;"
        }
    .end annotation
.end field


# instance fields
.field private mLocalKeyPair:Ljava/security/KeyPair;

.field private mRCSecretKey:Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;


# direct methods
.method static constructor <clinit>()V
    .registers 1

    .line 1
    new-instance v0, Ljava/util/HashMap;

    invoke-direct {v0}, Ljava/util/HashMap;-><init>()V

    sput-object v0, Lio/rong/message/utils/RCDHCodecTool;->sToolBag:Ljava/util/Map;

    return-void
.end method

.method public constructor <init>()V
    .registers 1

    .line 1
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method static synthetic access$000()Ljava/lang/String;
    .registers 1

    .line 1
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    return-object v0
.end method

.method static synthetic access$100([B)[B
    .registers 1

    .line 1
    invoke-static {p0}, Lio/rong/message/utils/RCDHCodecTool;->sha265Digest([B)[B

    move-result-object p0

    return-object p0
.end method

.method private static create()Lio/rong/message/utils/RCDHCodecTool;
    .registers 1

    .line 1
    new-instance v0, Lio/rong/message/utils/RCDHCodecTool;

    invoke-direct {v0}, Lio/rong/message/utils/RCDHCodecTool;-><init>()V

    return-object v0
.end method

.method public static decrypt([BLio/rong/message/utils/RCDHCodecTool$RCSecretKey;)[B
    .registers 7

    const-string v0, "decrypt"

    .line 1
    :try_start_2
    invoke-virtual {p1}, Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;->getEncoded()[B

    move-result-object p1

    .line 2
    new-instance v1, Ljavax/crypto/spec/SecretKeySpec;

    const-string v2, "AES"

    invoke-direct {v1, p1, v2}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    const/16 v2, 0x10

    .line 3
    new-array v3, v2, [B

    const/4 v4, 0x0

    .line 4
    invoke-static {p1, v4, v3, v4, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 5
    new-instance p1, Ljavax/crypto/spec/IvParameterSpec;

    invoke-direct {p1, v3}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V

    const-string v2, "AES/CBC/PKCS5Padding"

    .line 6
    invoke-static {v2}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v2

    const/4 v3, 0x2

    .line 7
    invoke-virtual {v2, v3, v1, p1}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V

    .line 8
    invoke-virtual {v2, p0}, Ljavax/crypto/Cipher;->doFinal([B)[B

    move-result-object p0
    :try_end_28
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_2 .. :try_end_28} :catch_38
    .catch Ljava/security/InvalidKeyException; {:try_start_2 .. :try_end_28} :catch_36
    .catch Ljavax/crypto/IllegalBlockSizeException; {:try_start_2 .. :try_end_28} :catch_34
    .catch Ljavax/crypto/NoSuchPaddingException; {:try_start_2 .. :try_end_28} :catch_32
    .catch Ljavax/crypto/BadPaddingException; {:try_start_2 .. :try_end_28} :catch_30
    .catch Ljava/security/InvalidAlgorithmParameterException; {:try_start_2 .. :try_end_28} :catch_29

    return-object p0

    :catch_29
    move-exception p0

    .line 9
    sget-object p1, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    invoke-static {p1, v0, p0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

    goto :goto_3e

    :catch_30
    move-exception p0

    goto :goto_39

    :catch_32
    move-exception p0

    goto :goto_39

    :catch_34
    move-exception p0

    goto :goto_39

    :catch_36
    move-exception p0

    goto :goto_39

    :catch_38
    move-exception p0

    .line 10
    :goto_39
    sget-object p1, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    invoke-static {p1, v0, p0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

    :goto_3e
    const/4 p0, 0x0

    return-object p0
.end method

.method public static encrypt([BLio/rong/message/utils/RCDHCodecTool$RCSecretKey;)[B
    .registers 6

    const/4 v0, 0x0

    .line 1
    :try_start_1
    invoke-virtual {p1}, Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;->getEncoded()[B

    move-result-object p1

    .line 2
    new-instance v1, Ljavax/crypto/spec/SecretKeySpec;

    const-string v2, "AES"

    invoke-direct {v1, p1, v2}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    const/16 v2, 0x10

    .line 3
    new-array v3, v2, [B

    .line 4
    invoke-static {p1, v0, v3, v0, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 5
    new-instance p1, Ljavax/crypto/spec/IvParameterSpec;

    invoke-direct {p1, v3}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V

    const-string v2, "AES/CBC/PKCS5Padding"

    .line 6
    invoke-static {v2}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v2

    const/4 v3, 0x1

    .line 7
    invoke-virtual {v2, v3, v1, p1}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V

    .line 8
    invoke-virtual {v2, p0}, Ljavax/crypto/Cipher;->doFinal([B)[B

    move-result-object p0
    :try_end_26
    .catch Ljava/lang/Exception; {:try_start_1 .. :try_end_26} :catch_27

    return-object p0

    :catch_27
    move-exception p0

    .line 9
    sget-object p1, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    new-instance v1, Ljava/lang/StringBuilder;

    invoke-direct {v1}, Ljava/lang/StringBuilder;-><init>()V

    const-string v2, "return byte[0],exception occurs while calling encrypt() "

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p0}, Ljava/lang/Exception;->getLocalizedMessage()Ljava/lang/String;

    move-result-object p0

    invoke-virtual {v1, p0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p0

    invoke-static {p1, p0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;)I

    .line 10
    new-array p0, v0, [B

    return-object p0
.end method

.method public static fromString2RCDHPrivateKey(Ljava/lang/String;)Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;
    .registers 3

    .line 1
    :try_start_0
    new-instance v0, Ljava/math/BigInteger;

    invoke-direct {v0, p0}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;)V
    :try_end_5
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_5} :catch_b

    .line 2
    new-instance p0, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;

    invoke-direct {p0, v0}, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;-><init>(Ljava/math/BigInteger;)V

    return-object p0

    :catch_b
    move-exception p0

    .line 3
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v1, "fromString2RCDHPrivateKey exception occurs when transforming keyString to BigInger."

    invoke-static {v0, v1, p0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

    const/4 p0, 0x0

    return-object p0
.end method

.method public static fromString2RCDHPublicKey(Ljava/lang/String;)Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;
    .registers 3

    .line 1
    :try_start_0
    new-instance v0, Ljava/math/BigInteger;

    invoke-direct {v0, p0}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;)V
    :try_end_5
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_5} :catch_b

    .line 2
    new-instance p0, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;

    invoke-direct {p0, v0}, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;-><init>(Ljava/math/BigInteger;)V

    return-object p0

    :catch_b
    move-exception p0

    .line 3
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v1, "fromString2RCDHPublicKey exception occurs when transforming keyString to BigInger."

    invoke-static {v0, v1, p0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

    const/4 p0, 0x0

    return-object p0
.end method

.method public static fromString2RCSecretKey(Ljava/lang/String;)Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;
    .registers 2

    .line 1
    :try_start_0
    new-instance v0, Ljava/math/BigInteger;

    invoke-direct {v0, p0}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;)V
    :try_end_5
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_5} :catch_b

    .line 2
    new-instance p0, Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;

    invoke-direct {p0, v0}, Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;-><init>(Ljava/math/BigInteger;)V

    return-object p0

    .line 3
    :catch_b
    sget-object p0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v0, "exception occurs when transforming keyString to BigInger."

    invoke-static {p0, v0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;)I

    const/4 p0, 0x0

    return-object p0
.end method

.method public static genEncId()Ljava/lang/String;
    .registers 5

    .line 1
    invoke-static {}, Ljava/lang/System;->currentTimeMillis()J

    move-result-wide v0

    .line 2
    new-instance v2, Ljava/util/Random;

    invoke-direct {v2}, Ljava/util/Random;-><init>()V

    :cond_9
    const/16 v3, 0x270f

    .line 3
    invoke-virtual {v2, v3}, Ljava/util/Random;->nextInt(I)I

    move-result v3

    .line 4
    div-int/lit16 v4, v3, 0x3e8

    if-lez v4, :cond_9

    .line 5
    new-instance v2, Ljava/lang/StringBuilder;

    invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

    invoke-static {v0, v1}, Ljava/lang/String;->valueOf(J)Ljava/lang/String;

    move-result-object v0

    invoke-virtual {v2, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v0

    return-object v0
.end method

.method private genLocalKeyPair(Ljavax/crypto/spec/DHParameterSpec;)Ljava/security/KeyPair;
    .registers 9

    :try_start_0
    const-string v0, "SHA1PRNG"

    .line 1
    invoke-static {v0}, Ljava/security/SecureRandom;->getInstance(Ljava/lang/String;)Ljava/security/SecureRandom;

    move-result-object v0
    :try_end_6
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_0 .. :try_end_6} :catch_68

    if-nez p1, :cond_1d

    .line 2
    new-instance p1, Ljavax/crypto/spec/DHParameterSpec;

    new-instance v1, Ljava/math/BigInteger;

    const-string v2, "25135566567101483196994790440833279750474660393232382279277736257066266618532493517139001963526957179514521981877335815379755618191324858392834843718048308951653115284529736874534289456833723962912807104017411854314007953484461899139734367756070456068592886771130491355511301923675421649355211882120329692353507392677087555292357140606251171702417804959957862991259464749806480821163999054978911727901705780417863120490095024926067731615229486812312187386108568833026386220686253160504779704721744600638258183939573405528962511242337923530869616215532193967628076922234051908977996352800560160181197923404454023908443"

    invoke-direct {v1, v2}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;)V

    new-instance v2, Ljava/math/BigInteger;

    const-string v3, "3"

    invoke-direct {v2, v3}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;)V

    const/16 v3, 0x800

    invoke-direct {p1, v1, v2, v3}, Ljavax/crypto/spec/DHParameterSpec;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;I)V

    .line 3
    :cond_1d
    invoke-virtual {p1}, Ljavax/crypto/spec/DHParameterSpec;->getP()Ljava/math/BigInteger;

    move-result-object v1

    .line 4
    invoke-virtual {p1}, Ljavax/crypto/spec/DHParameterSpec;->getG()Ljava/math/BigInteger;

    move-result-object v2

    .line 5
    invoke-virtual {p1}, Ljavax/crypto/spec/DHParameterSpec;->getL()I

    move-result p1

    const-wide/16 v3, 0x2

    .line 6
    invoke-static {v3, v4}, Ljava/math/BigInteger;->valueOf(J)Ljava/math/BigInteger;

    move-result-object v3

    invoke-virtual {v1, v3}, Ljava/math/BigInteger;->subtract(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v3

    .line 7
    :cond_33
    new-instance v4, Ljava/math/BigInteger;

    invoke-direct {v4, p1, v0}, Ljava/math/BigInteger;-><init>(ILjava/util/Random;)V

    const-wide/16 v5, 0x1

    .line 8
    invoke-static {v5, v6}, Ljava/math/BigInteger;->valueOf(J)Ljava/math/BigInteger;

    move-result-object v5

    invoke-virtual {v4, v5}, Ljava/math/BigInteger;->compareTo(Ljava/math/BigInteger;)I

    move-result v5

    if-ltz v5, :cond_33

    .line 9
    invoke-virtual {v4, v3}, Ljava/math/BigInteger;->compareTo(Ljava/math/BigInteger;)I

    move-result v5

    if-gtz v5, :cond_33

    invoke-virtual {v4}, Ljava/math/BigInteger;->bitLength()I

    move-result v5

    if-ne v5, p1, :cond_33

    .line 10
    invoke-virtual {v2, v4, v1}, Ljava/math/BigInteger;->modPow(Ljava/math/BigInteger;Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p1

    .line 11
    new-instance v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;

    invoke-direct {v0, p1}, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;-><init>(Ljava/math/BigInteger;)V

    .line 12
    new-instance p1, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;

    invoke-direct {p1, v4}, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;-><init>(Ljava/math/BigInteger;)V

    .line 13
    new-instance v1, Ljava/security/KeyPair;

    invoke-direct {v1, v0, p1}, Ljava/security/KeyPair;-><init>(Ljava/security/PublicKey;Ljava/security/PrivateKey;)V

    iput-object v1, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    .line 14
    iget-object p1, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    return-object p1

    :catch_68
    move-exception p1

    .line 15
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v1, "genLocalKeyPair could not get the NativePRNG random algorithm , generate local keypair failed!"

    invoke-static {v0, v1, p1}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

    const/4 p1, 0x0

    return-object p1
.end method

.method public static getRCSecretKeyByEncId(Ljava/lang/String;)Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;
    .registers 1

    .line 1
    invoke-static {p0}, Lio/rong/message/utils/RCDHCodecTool;->obtainWithEncId(Ljava/lang/String;)Lio/rong/message/utils/RCDHCodecTool;

    move-result-object p0

    if-nez p0, :cond_8

    const/4 p0, 0x0

    return-object p0

    .line 2
    :cond_8
    iget-object p0, p0, Lio/rong/message/utils/RCDHCodecTool;->mRCSecretKey:Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;

    return-object p0
.end method

.method public static obtainWithEncId(Ljava/lang/String;)Lio/rong/message/utils/RCDHCodecTool;
    .registers 3

    if-eqz p0, :cond_24

    .line 1
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v0

    if-nez v0, :cond_9

    goto :goto_24

    .line 2
    :cond_9
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->sToolBag:Ljava/util/Map;

    invoke-interface {v0, p0}, Ljava/util/Map;->containsKey(Ljava/lang/Object;)Z

    move-result v0

    if-eqz v0, :cond_1a

    .line 3
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->sToolBag:Ljava/util/Map;

    invoke-interface {v0, p0}, Ljava/util/Map;->get(Ljava/lang/Object;)Ljava/lang/Object;

    move-result-object p0

    check-cast p0, Lio/rong/message/utils/RCDHCodecTool;

    return-object p0

    .line 4
    :cond_1a
    invoke-static {}, Lio/rong/message/utils/RCDHCodecTool;->create()Lio/rong/message/utils/RCDHCodecTool;

    move-result-object v0

    .line 5
    sget-object v1, Lio/rong/message/utils/RCDHCodecTool;->sToolBag:Ljava/util/Map;

    invoke-interface {v1, p0, v0}, Ljava/util/Map;->put(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;

    return-object v0

    .line 6
    :cond_24
    :goto_24
    sget-object p0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v0, "encId is null or empty while creating RCDHTool,so create a normal one."

    invoke-static {p0, v0}, Lio/rong/common/RLog;->w(Ljava/lang/String;Ljava/lang/String;)I

    .line 7
    invoke-static {}, Lio/rong/message/utils/RCDHCodecTool;->create()Lio/rong/message/utils/RCDHCodecTool;

    move-result-object p0

    return-object p0
.end method

.method public static parseEncTargetId(Ljava/lang/String;)[Ljava/lang/String;
    .registers 2

    if-eqz p0, :cond_10

    .line 1
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v0

    if-nez v0, :cond_9

    goto :goto_10

    :cond_9
    const-string v0, ";;;"

    .line 2
    invoke-virtual {p0, v0}, Ljava/lang/String;->split(Ljava/lang/String;)[Ljava/lang/String;

    move-result-object p0

    return-object p0

    .line 3
    :cond_10
    :goto_10
    sget-object p0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v0, "targetId is null or empty!"

    invoke-static {p0, v0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;)I

    const/4 p0, 0x0

    return-object p0
.end method

.method private static sha265Digest([B)[B
    .registers 3

    :try_start_0
    const-string v0, "SHA-256"

    .line 1
    invoke-static {v0}, Ljava/security/MessageDigest;->getInstance(Ljava/lang/String;)Ljava/security/MessageDigest;

    move-result-object v0

    .line 2
    invoke-virtual {v0, p0}, Ljava/security/MessageDigest;->update([B)V

    .line 3
    invoke-virtual {v0}, Ljava/security/MessageDigest;->digest()[B

    move-result-object p0
    :try_end_d
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_0 .. :try_end_d} :catch_e

    return-object p0

    :catch_e
    move-exception p0

    .line 4
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v1, "sha265Digest"

    invoke-static {v0, v1, p0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

    const/4 p0, 0x0

    return-object p0
.end method


# virtual methods
.method public genSecretKey(Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;)Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;
    .registers 6

    .line 1
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    const/4 v1, 0x0

    if-eqz v0, :cond_b

    invoke-virtual {v0}, Ljava/security/KeyPair;->getPrivate()Ljava/security/PrivateKey;

    move-result-object v0

    if-nez v0, :cond_e

    .line 2
    :cond_b
    invoke-direct {p0, v1}, Lio/rong/message/utils/RCDHCodecTool;->genLocalKeyPair(Ljavax/crypto/spec/DHParameterSpec;)Ljava/security/KeyPair;

    :cond_e
    if-eqz p1, :cond_73

    .line 3
    invoke-virtual {p1}, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;->getY()Ljava/math/BigInteger;

    move-result-object v0

    if-nez v0, :cond_17

    goto :goto_73

    .line 4
    :cond_17
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    invoke-virtual {v0}, Ljava/security/KeyPair;->getPrivate()Ljava/security/PrivateKey;

    move-result-object v0

    instance-of v0, v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;

    if-eqz v0, :cond_2a

    .line 5
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    invoke-virtual {v0}, Ljava/security/KeyPair;->getPrivate()Ljava/security/PrivateKey;

    move-result-object v0

    check-cast v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;

    goto :goto_2b

    :cond_2a
    move-object v0, v1

    :goto_2b
    if-nez v0, :cond_35

    .line 6
    sget-object p1, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v0, "private key is null ,can not generate the SecretKey."

    invoke-static {p1, v0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;)I

    return-object v1

    .line 7
    :cond_35
    :try_start_35
    invoke-virtual {p1}, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;->getY()Ljava/math/BigInteger;

    move-result-object p1

    invoke-virtual {v0}, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;->getX()Ljava/math/BigInteger;

    move-result-object v0

    new-instance v2, Ljava/math/BigInteger;

    const-string v3, "25135566567101483196994790440833279750474660393232382279277736257066266618532493517139001963526957179514521981877335815379755618191324858392834843718048308951653115284529736874534289456833723962912807104017411854314007953484461899139734367756070456068592886771130491355511301923675421649355211882120329692353507392677087555292357140606251171702417804959957862991259464749806480821163999054978911727901705780417863120490095024926067731615229486812312187386108568833026386220686253160504779704721744600638258183939573405528962511242337923530869616215532193967628076922234051908977996352800560160181197923404454023908443"

    invoke-direct {v2, v3}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;)V

    invoke-virtual {p1, v0, v2}, Ljava/math/BigInteger;->modPow(Ljava/math/BigInteger;Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p1

    .line 8
    new-instance v0, Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;

    invoke-direct {v0, p1}, Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;-><init>(Ljava/math/BigInteger;)V

    iput-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mRCSecretKey:Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;

    .line 9
    iget-object p1, p0, Lio/rong/message/utils/RCDHCodecTool;->mRCSecretKey:Lio/rong/message/utils/RCDHCodecTool$RCSecretKey;
    :try_end_51
    .catch Ljava/lang/Exception; {:try_start_35 .. :try_end_51} :catch_52

    return-object p1

    :catch_52
    move-exception p1

    .line 10
    sget-object v0, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    new-instance v2, Ljava/lang/StringBuilder;

    invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

    const-string v3, "exception of "

    invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1}, Ljava/lang/Exception;->getLocalizedMessage()Ljava/lang/String;

    move-result-object p1

    invoke-virtual {v2, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    const-string p1, "occurs,return null."

    invoke-virtual {v2, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-static {v0, p1}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;)I

    return-object v1

    .line 11
    :cond_73
    :goto_73
    sget-object p1, Lio/rong/message/utils/RCDHCodecTool;->TAG:Ljava/lang/String;

    const-string v0, "public key is null ,can not generate the SecretKey."

    invoke-static {p1, v0}, Lio/rong/common/RLog;->e(Ljava/lang/String;Ljava/lang/String;)I

    return-object v1
.end method

.method public getOrCreateLocalKeyPair(Ljavax/crypto/spec/DHParameterSpec;)Ljava/security/KeyPair;
    .registers 3

    .line 1
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    if-nez v0, :cond_a

    .line 2
    invoke-direct {p0, p1}, Lio/rong/message/utils/RCDHCodecTool;->genLocalKeyPair(Ljavax/crypto/spec/DHParameterSpec;)Ljava/security/KeyPair;

    move-result-object p1

    iput-object p1, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    .line 3
    :cond_a
    iget-object p1, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    return-object p1
.end method

.method public getRCPriKey()Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;
    .registers 3

    .line 1
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    const/4 v1, 0x0

    if-nez v0, :cond_6

    return-object v1

    .line 2
    :cond_6
    invoke-virtual {v0}, Ljava/security/KeyPair;->getPrivate()Ljava/security/PrivateKey;

    move-result-object v0

    instance-of v0, v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;

    if-eqz v0, :cond_17

    .line 3
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    invoke-virtual {v0}, Ljava/security/KeyPair;->getPrivate()Ljava/security/PrivateKey;

    move-result-object v0

    check-cast v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPrivateKey;

    return-object v0

    :cond_17
    return-object v1
.end method

.method public getRCPubKey()Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;
    .registers 3

    .line 1
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    const/4 v1, 0x0

    if-nez v0, :cond_6

    return-object v1

    .line 2
    :cond_6
    invoke-virtual {v0}, Ljava/security/KeyPair;->getPublic()Ljava/security/PublicKey;

    move-result-object v0

    instance-of v0, v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;

    if-eqz v0, :cond_17

    .line 3
    iget-object v0, p0, Lio/rong/message/utils/RCDHCodecTool;->mLocalKeyPair:Ljava/security/KeyPair;

    invoke-virtual {v0}, Ljava/security/KeyPair;->getPublic()Ljava/security/PublicKey;

    move-result-object v0

    check-cast v0, Lio/rong/message/utils/RCDHCodecTool$RCDHPublicKey;

    return-object v0

    :cond_17
    return-object v1
.end method