TlsDHKeyExchange.smali

.class public Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;
.super Lorg/spongycastle/crypto/tls/AbstractTlsKeyExchange;
.source "TlsDHKeyExchange.java"


# instance fields
.field protected agreementCredentials:Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

.field protected dhAgreePrivateKey:Lorg/spongycastle/crypto/params/DHPrivateKeyParameters;

.field protected dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

.field protected dhParameters:Lorg/spongycastle/crypto/params/DHParameters;

.field protected serverPublicKey:Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;

.field protected tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;


# direct methods
.method public constructor <init>(ILjava/util/Vector;Lorg/spongycastle/crypto/params/DHParameters;)V
    .registers 6

    .prologue
    .line 34
    invoke-direct {p0, p1, p2}, Lorg/spongycastle/crypto/tls/AbstractTlsKeyExchange;-><init>(ILjava/util/Vector;)V

    .line 36
    packed-switch p1, :pswitch_data_24

    .line 49
    :pswitch_6
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "unsupported key exchange algorithm"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 40
    :pswitch_e
    const/4 v0, 0x0

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    .line 52
    :goto_11
    iput-object p3, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhParameters:Lorg/spongycastle/crypto/params/DHParameters;

    .line 53
    return-void

    .line 43
    :pswitch_14
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsRSASigner;

    invoke-direct {v0}, Lorg/spongycastle/crypto/tls/TlsRSASigner;-><init>()V

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    goto :goto_11

    .line 46
    :pswitch_1c
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsDSSSigner;

    invoke-direct {v0}, Lorg/spongycastle/crypto/tls/TlsDSSSigner;-><init>()V

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    goto :goto_11

    .line 36
    :pswitch_data_24
    .packed-switch 0x3
        :pswitch_1c
        :pswitch_6
        :pswitch_14
        :pswitch_6
        :pswitch_e
        :pswitch_6
        :pswitch_e
    .end packed-switch
.end method


# virtual methods
.method public generateClientKeyExchange(Ljava/io/OutputStream;)V
    .registers 4

    .prologue
    .line 178
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->agreementCredentials:Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

    if-nez v0, :cond_12

    .line 180
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->context:Lorg/spongycastle/crypto/tls/TlsContext;

    invoke-interface {v0}, Lorg/spongycastle/crypto/tls/TlsContext;->getSecureRandom()Ljava/security/SecureRandom;

    move-result-object v0

    iget-object v1, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhParameters:Lorg/spongycastle/crypto/params/DHParameters;

    invoke-static {v0, v1, p1}, Lorg/spongycastle/crypto/tls/TlsDHUtils;->generateEphemeralClientKeyExchange(Ljava/security/SecureRandom;Lorg/spongycastle/crypto/params/DHParameters;Ljava/io/OutputStream;)Lorg/spongycastle/crypto/params/DHPrivateKeyParameters;

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePrivateKey:Lorg/spongycastle/crypto/params/DHPrivateKeyParameters;

    .line 183
    :cond_12
    return-void
.end method

.method public generatePremasterSecret()[B
    .registers 3

    .prologue
    .line 211
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->agreementCredentials:Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

    if-eqz v0, :cond_d

    .line 213
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->agreementCredentials:Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

    iget-object v1, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    invoke-interface {v0, v1}, Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;->generateAgreement(Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;)[B

    move-result-object v0

    .line 218
    :goto_c
    return-object v0

    .line 216
    :cond_d
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePrivateKey:Lorg/spongycastle/crypto/params/DHPrivateKeyParameters;

    if-eqz v0, :cond_1a

    .line 218
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    iget-object v1, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePrivateKey:Lorg/spongycastle/crypto/params/DHPrivateKeyParameters;

    invoke-static {v0, v1}, Lorg/spongycastle/crypto/tls/TlsDHUtils;->calculateDHBasicAgreement(Lorg/spongycastle/crypto/params/DHPublicKeyParameters;Lorg/spongycastle/crypto/params/DHPrivateKeyParameters;)[B

    move-result-object v0

    goto :goto_c

    .line 221
    :cond_1a
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v1, 0x50

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0
.end method

.method protected getMinimumPrimeBits()I
    .registers 2

    .prologue
    .line 226
    const/16 v0, 0x400

    return v0
.end method

.method public init(Lorg/spongycastle/crypto/tls/TlsContext;)V
    .registers 3

    .prologue
    .line 57
    invoke-super {p0, p1}, Lorg/spongycastle/crypto/tls/AbstractTlsKeyExchange;->init(Lorg/spongycastle/crypto/tls/TlsContext;)V

    .line 59
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    if-eqz v0, :cond_c

    .line 61
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    invoke-interface {v0, p1}, Lorg/spongycastle/crypto/tls/TlsSigner;->init(Lorg/spongycastle/crypto/tls/TlsContext;)V

    .line 63
    :cond_c
    return-void
.end method

.method public processClientCertificate(Lorg/spongycastle/crypto/tls/Certificate;)V
    .registers 2

    .prologue
    .line 193
    return-void
.end method

.method public processClientCredentials(Lorg/spongycastle/crypto/tls/TlsCredentials;)V
    .registers 4

    .prologue
    .line 154
    instance-of v0, p1, Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

    if-eqz v0, :cond_9

    .line 158
    check-cast p1, Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

    iput-object p1, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->agreementCredentials:Lorg/spongycastle/crypto/tls/TlsAgreementCredentials;

    .line 168
    :cond_8
    return-void

    .line 160
    :cond_9
    instance-of v0, p1, Lorg/spongycastle/crypto/tls/TlsSignerCredentials;

    if-nez v0, :cond_8

    .line 166
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v1, 0x50

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0
.end method

.method public processClientKeyExchange(Ljava/io/InputStream;)V
    .registers 5

    .prologue
    .line 197
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    if-eqz v0, :cond_5

    .line 206
    :goto_4
    return-void

    .line 203
    :cond_5
    invoke-static {p1}, Lorg/spongycastle/crypto/tls/TlsDHUtils;->readDHParameter(Ljava/io/InputStream;)Ljava/math/BigInteger;

    move-result-object v0

    .line 205
    new-instance v1, Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    iget-object v2, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhParameters:Lorg/spongycastle/crypto/params/DHParameters;

    invoke-direct {v1, v0, v2}, Lorg/spongycastle/crypto/params/DHPublicKeyParameters;-><init>(Ljava/math/BigInteger;Lorg/spongycastle/crypto/params/DHParameters;)V

    invoke-static {v1}, Lorg/spongycastle/crypto/tls/TlsDHUtils;->validateDHPublicKey(Lorg/spongycastle/crypto/params/DHPublicKeyParameters;)Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    goto :goto_4
.end method

.method public processServerCertificate(Lorg/spongycastle/crypto/tls/Certificate;)V
    .registers 6

    .prologue
    const/16 v3, 0x2e

    .line 74
    invoke-virtual {p1}, Lorg/spongycastle/crypto/tls/Certificate;->isEmpty()Z

    move-result v0

    if-eqz v0, :cond_10

    .line 76
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v1, 0x2a

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0

    .line 79
    :cond_10
    const/4 v0, 0x0

    invoke-virtual {p1, v0}, Lorg/spongycastle/crypto/tls/Certificate;->getCertificateAt(I)Lorg/spongycastle/asn1/x509/Certificate;

    move-result-object v1

    .line 81
    invoke-virtual {v1}, Lorg/spongycastle/asn1/x509/Certificate;->getSubjectPublicKeyInfo()Lorg/spongycastle/asn1/x509/SubjectPublicKeyInfo;

    move-result-object v0

    .line 84
    :try_start_19
    invoke-static {v0}, Lorg/spongycastle/crypto/util/PublicKeyFactory;->createKey(Lorg/spongycastle/asn1/x509/SubjectPublicKeyInfo;)Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->serverPublicKey:Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;
    :try_end_1f
    .catch Ljava/lang/RuntimeException; {:try_start_19 .. :try_end_1f} :catch_42

    .line 91
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    if-nez v0, :cond_52

    .line 95
    :try_start_23
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->serverPublicKey:Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;

    check-cast v0, Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    invoke-static {v0}, Lorg/spongycastle/crypto/tls/TlsDHUtils;->validateDHPublicKey(Lorg/spongycastle/crypto/params/DHPublicKeyParameters;)Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    .line 96
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhAgreePublicKey:Lorg/spongycastle/crypto/params/DHPublicKeyParameters;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/DHPublicKeyParameters;->getParameters()Lorg/spongycastle/crypto/params/DHParameters;

    move-result-object v0

    invoke-virtual {p0, v0}, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->validateDHParameters(Lorg/spongycastle/crypto/params/DHParameters;)Lorg/spongycastle/crypto/params/DHParameters;

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->dhParameters:Lorg/spongycastle/crypto/params/DHParameters;
    :try_end_39
    .catch Ljava/lang/ClassCastException; {:try_start_23 .. :try_end_39} :catch_4b

    .line 103
    const/16 v0, 0x8

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/tls/TlsUtils;->validateKeyUsage(Lorg/spongycastle/asn1/x509/Certificate;I)V

    .line 115
    :goto_3e
    invoke-super {p0, p1}, Lorg/spongycastle/crypto/tls/AbstractTlsKeyExchange;->processServerCertificate(Lorg/spongycastle/crypto/tls/Certificate;)V

    .line 116
    return-void

    .line 86
    :catch_42
    move-exception v0

    .line 88
    new-instance v1, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v2, 0x2b

    invoke-direct {v1, v2, v0}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(SLjava/lang/Throwable;)V

    throw v1

    .line 98
    :catch_4b
    move-exception v0

    .line 100
    new-instance v1, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    invoke-direct {v1, v3, v0}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(SLjava/lang/Throwable;)V

    throw v1

    .line 107
    :cond_52
    iget-object v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->tlsSigner:Lorg/spongycastle/crypto/tls/TlsSigner;

    iget-object v2, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->serverPublicKey:Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;

    invoke-interface {v0, v2}, Lorg/spongycastle/crypto/tls/TlsSigner;->isValidPublicKey(Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;)Z

    move-result v0

    if-nez v0, :cond_62

    .line 109
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    invoke-direct {v0, v3}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0

    .line 112
    :cond_62
    const/16 v0, 0x80

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/tls/TlsUtils;->validateKeyUsage(Lorg/spongycastle/asn1/x509/Certificate;I)V

    goto :goto_3e
.end method

.method public requiresServerKeyExchange()Z
    .registers 2

    .prologue
    .line 120
    iget v0, p0, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->keyExchange:I

    sparse-switch v0, :sswitch_data_a

    .line 127
    const/4 v0, 0x0

    :goto_6
    return v0

    .line 125
    :sswitch_7
    const/4 v0, 0x1

    goto :goto_6

    .line 120
    nop

    :sswitch_data_a
    .sparse-switch
        0x3 -> :sswitch_7
        0x5 -> :sswitch_7
        0xb -> :sswitch_7
    .end sparse-switch
.end method

.method public skipServerCredentials()V
    .registers 3

    .prologue
    .line 68
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v1, 0xa

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0
.end method

.method public validateCertificateRequest(Lorg/spongycastle/crypto/tls/CertificateRequest;)V
    .registers 5

    .prologue
    .line 134
    invoke-virtual {p1}, Lorg/spongycastle/crypto/tls/CertificateRequest;->getCertificateTypes()[S

    move-result-object v1

    .line 135
    const/4 v0, 0x0

    :goto_5
    array-length v2, v1

    if-ge v0, v2, :cond_18

    .line 137
    aget-short v2, v1, v0

    sparse-switch v2, :sswitch_data_1a

    .line 146
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v1, 0x2f

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0

    .line 135
    :sswitch_15
    add-int/lit8 v0, v0, 0x1

    goto :goto_5

    .line 149
    :cond_18
    return-void

    .line 137
    nop

    :sswitch_data_1a
    .sparse-switch
        0x1 -> :sswitch_15
        0x2 -> :sswitch_15
        0x3 -> :sswitch_15
        0x4 -> :sswitch_15
        0x40 -> :sswitch_15
    .end sparse-switch
.end method

.method protected validateDHParameters(Lorg/spongycastle/crypto/params/DHParameters;)Lorg/spongycastle/crypto/params/DHParameters;
    .registers 4

    .prologue
    .line 231
    invoke-virtual {p1}, Lorg/spongycastle/crypto/params/DHParameters;->getP()Ljava/math/BigInteger;

    move-result-object v0

    invoke-virtual {v0}, Ljava/math/BigInteger;->bitLength()I

    move-result v0

    invoke-virtual {p0}, Lorg/spongycastle/crypto/tls/TlsDHKeyExchange;->getMinimumPrimeBits()I

    move-result v1

    if-ge v0, v1, :cond_16

    .line 233
    new-instance v0, Lorg/spongycastle/crypto/tls/TlsFatalAlert;

    const/16 v1, 0x47

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/tls/TlsFatalAlert;-><init>(S)V

    throw v0

    .line 236
    :cond_16
    invoke-static {p1}, Lorg/spongycastle/crypto/tls/TlsDHUtils;->validateDHParameters(Lorg/spongycastle/crypto/params/DHParameters;)Lorg/spongycastle/crypto/params/DHParameters;

    move-result-object v0

    return-object v0
.end method