AES$AlgParamGenGCM.smali

.class public Lorg/spongycastle/jcajce/provider/symmetric/AES$AlgParamGenGCM;
.super Lorg/spongycastle/jcajce/provider/symmetric/util/BaseAlgorithmParameterGenerator;
.source "AES.java"


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

    .prologue
    .line 470
    invoke-direct {p0}, Lorg/spongycastle/jcajce/provider/symmetric/util/BaseAlgorithmParameterGenerator;-><init>()V

    return-void
.end method


# virtual methods
.method protected engineGenerateParameters()Ljava/security/AlgorithmParameters;
    .registers 5

    .prologue
    const/16 v0, 0xc

    .line 483
    new-array v0, v0, [B

    .line 485
    iget-object v1, p0, Lorg/spongycastle/jcajce/provider/symmetric/AES$AlgParamGenGCM;->random:Ljava/security/SecureRandom;

    if-nez v1, :cond_f

    .line 487
    new-instance v1, Ljava/security/SecureRandom;

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

    iput-object v1, p0, Lorg/spongycastle/jcajce/provider/symmetric/AES$AlgParamGenGCM;->random:Ljava/security/SecureRandom;

    .line 490
    :cond_f
    iget-object v1, p0, Lorg/spongycastle/jcajce/provider/symmetric/AES$AlgParamGenGCM;->random:Ljava/security/SecureRandom;

    invoke-virtual {v1, v0}, Ljava/security/SecureRandom;->nextBytes([B)V

    .line 496
    :try_start_14
    const-string v1, "GCM"

    invoke-virtual {p0, v1}, Lorg/spongycastle/jcajce/provider/symmetric/AES$AlgParamGenGCM;->createParametersInstance(Ljava/lang/String;)Ljava/security/AlgorithmParameters;

    move-result-object v1

    .line 497
    new-instance v2, Lorg/spongycastle/asn1/cms/GCMParameters;

    const/16 v3, 0xc

    invoke-direct {v2, v0, v3}, Lorg/spongycastle/asn1/cms/GCMParameters;-><init>([BI)V

    invoke-virtual {v2}, Lorg/spongycastle/asn1/cms/GCMParameters;->getEncoded()[B

    move-result-object v0

    invoke-virtual {v1, v0}, Ljava/security/AlgorithmParameters;->init([B)V
    :try_end_28
    .catch Ljava/lang/Exception; {:try_start_14 .. :try_end_28} :catch_29

    .line 504
    return-object v1

    .line 499
    :catch_29
    move-exception v0

    .line 501
    new-instance v1, Ljava/lang/RuntimeException;

    invoke-virtual {v0}, Ljava/lang/Exception;->getMessage()Ljava/lang/String;

    move-result-object v0

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

    throw v1
.end method

.method protected engineInit(Ljava/security/spec/AlgorithmParameterSpec;Ljava/security/SecureRandom;)V
    .registers 5

    .prologue
    .line 478
    new-instance v0, Ljava/security/InvalidAlgorithmParameterException;

    const-string v1, "No supported AlgorithmParameterSpec for AES parameter generation."

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

    throw v0
.end method