CramerShoupParametersGenerator.smali

.class public Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;
.super Ljava/lang/Object;
.source "CramerShoupParametersGenerator.java"


# static fields
.field private static final ONE:Ljava/math/BigInteger;


# instance fields
.field private certainty:I

.field private random:Ljava/security/SecureRandom;

.field private size:I


# direct methods
.method static constructor <clinit>()V
    .registers 2

    .prologue
    .line 13
    const-wide/16 v0, 0x1

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

    move-result-object v0

    sput-object v0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->ONE:Ljava/math/BigInteger;

    return-void
.end method

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

    .prologue
    .line 11
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method static synthetic access$000()Ljava/math/BigInteger;
    .registers 1

    .prologue
    .line 11
    sget-object v0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->ONE:Ljava/math/BigInteger;

    return-object v0
.end method


# virtual methods
.method public generateParameters()Lorg/spongycastle/crypto/params/CramerShoupParameters;
    .registers 6

    .prologue
    .line 47
    iget v0, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->size:I

    iget v1, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->certainty:I

    iget-object v2, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    invoke-static {v0, v1, v2}, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator$ParametersHelper;->generateSafePrimes(IILjava/security/SecureRandom;)[Ljava/math/BigInteger;

    move-result-object v0

    .line 50
    const/4 v1, 0x1

    aget-object v1, v0, v1

    .line 51
    iget-object v0, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator$ParametersHelper;->selectGenerator(Ljava/math/BigInteger;Ljava/security/SecureRandom;)Ljava/math/BigInteger;

    move-result-object v2

    .line 52
    iget-object v0, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator$ParametersHelper;->selectGenerator(Ljava/math/BigInteger;Ljava/security/SecureRandom;)Ljava/math/BigInteger;

    move-result-object v0

    .line 53
    :goto_19
    invoke-virtual {v2, v0}, Ljava/math/BigInteger;->equals(Ljava/lang/Object;)Z

    move-result v3

    if-eqz v3, :cond_26

    .line 55
    iget-object v0, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator$ParametersHelper;->selectGenerator(Ljava/math/BigInteger;Ljava/security/SecureRandom;)Ljava/math/BigInteger;

    move-result-object v0

    goto :goto_19

    .line 58
    :cond_26
    new-instance v3, Lorg/spongycastle/crypto/params/CramerShoupParameters;

    new-instance v4, Lorg/spongycastle/crypto/digests/SHA256Digest;

    invoke-direct {v4}, Lorg/spongycastle/crypto/digests/SHA256Digest;-><init>()V

    invoke-direct {v3, v1, v2, v0, v4}, Lorg/spongycastle/crypto/params/CramerShoupParameters;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Lorg/spongycastle/crypto/Digest;)V

    return-object v3
.end method

.method public generateParameters(Lorg/spongycastle/crypto/params/DHParameters;)Lorg/spongycastle/crypto/params/CramerShoupParameters;
    .registers 7

    .prologue
    .line 63
    invoke-virtual {p1}, Lorg/spongycastle/crypto/params/DHParameters;->getP()Ljava/math/BigInteger;

    move-result-object v1

    .line 64
    invoke-virtual {p1}, Lorg/spongycastle/crypto/params/DHParameters;->getG()Ljava/math/BigInteger;

    move-result-object v2

    .line 67
    iget-object v0, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator$ParametersHelper;->selectGenerator(Ljava/math/BigInteger;Ljava/security/SecureRandom;)Ljava/math/BigInteger;

    move-result-object v0

    .line 68
    :goto_e
    invoke-virtual {v2, v0}, Ljava/math/BigInteger;->equals(Ljava/lang/Object;)Z

    move-result v3

    if-eqz v3, :cond_1b

    .line 70
    iget-object v0, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator$ParametersHelper;->selectGenerator(Ljava/math/BigInteger;Ljava/security/SecureRandom;)Ljava/math/BigInteger;

    move-result-object v0

    goto :goto_e

    .line 73
    :cond_1b
    new-instance v3, Lorg/spongycastle/crypto/params/CramerShoupParameters;

    new-instance v4, Lorg/spongycastle/crypto/digests/SHA256Digest;

    invoke-direct {v4}, Lorg/spongycastle/crypto/digests/SHA256Digest;-><init>()V

    invoke-direct {v3, v1, v2, v0, v4}, Lorg/spongycastle/crypto/params/CramerShoupParameters;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Lorg/spongycastle/crypto/Digest;)V

    return-object v3
.end method

.method public init(IILjava/security/SecureRandom;)V
    .registers 4

    .prologue
    .line 30
    iput p1, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->size:I

    .line 31
    iput p2, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->certainty:I

    .line 32
    iput-object p3, p0, Lorg/spongycastle/crypto/generators/CramerShoupParametersGenerator;->random:Ljava/security/SecureRandom;

    .line 33
    return-void
.end method