DSAUtil.smali

.class public Lorg/spongycastle/jcajce/provider/asymmetric/dsa/DSAUtil;
.super Ljava/lang/Object;
.source "DSAUtil.java"


# static fields
.field public static final dsaOids:[Lorg/spongycastle/asn1/ASN1ObjectIdentifier;


# direct methods
.method static constructor <clinit>()V
    .registers 3

    .prologue
    .line 23
    const/4 v0, 0x2

    new-array v0, v0, [Lorg/spongycastle/asn1/ASN1ObjectIdentifier;

    const/4 v1, 0x0

    sget-object v2, Lorg/spongycastle/asn1/x9/X9ObjectIdentifiers;->id_dsa:Lorg/spongycastle/asn1/ASN1ObjectIdentifier;

    aput-object v2, v0, v1

    const/4 v1, 0x1

    sget-object v2, Lorg/spongycastle/asn1/oiw/OIWObjectIdentifiers;->dsaWithSHA1:Lorg/spongycastle/asn1/ASN1ObjectIdentifier;

    aput-object v2, v0, v1

    sput-object v0, Lorg/spongycastle/jcajce/provider/asymmetric/dsa/DSAUtil;->dsaOids:[Lorg/spongycastle/asn1/ASN1ObjectIdentifier;

    return-void
.end method

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

    .prologue
    .line 21
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static generatePrivateKeyParameter(Ljava/security/PrivateKey;)Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;
    .registers 7

    .prologue
    .line 62
    instance-of v0, p0, Ljava/security/interfaces/DSAPrivateKey;

    if-eqz v0, :cond_2d

    .line 64
    check-cast p0, Ljava/security/interfaces/DSAPrivateKey;

    .line 66
    new-instance v0, Lorg/spongycastle/crypto/params/DSAPrivateKeyParameters;

    invoke-interface {p0}, Ljava/security/interfaces/DSAPrivateKey;->getX()Ljava/math/BigInteger;

    move-result-object v1

    new-instance v2, Lorg/spongycastle/crypto/params/DSAParameters;

    .line 67
    invoke-interface {p0}, Ljava/security/interfaces/DSAPrivateKey;->getParams()Ljava/security/interfaces/DSAParams;

    move-result-object v3

    invoke-interface {v3}, Ljava/security/interfaces/DSAParams;->getP()Ljava/math/BigInteger;

    move-result-object v3

    invoke-interface {p0}, Ljava/security/interfaces/DSAPrivateKey;->getParams()Ljava/security/interfaces/DSAParams;

    move-result-object v4

    invoke-interface {v4}, Ljava/security/interfaces/DSAParams;->getQ()Ljava/math/BigInteger;

    move-result-object v4

    invoke-interface {p0}, Ljava/security/interfaces/DSAPrivateKey;->getParams()Ljava/security/interfaces/DSAParams;

    move-result-object v5

    invoke-interface {v5}, Ljava/security/interfaces/DSAParams;->getG()Ljava/math/BigInteger;

    move-result-object v5

    invoke-direct {v2, v3, v4, v5}, Lorg/spongycastle/crypto/params/DSAParameters;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;)V

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

    return-object v0

    .line 70
    :cond_2d
    new-instance v0, Ljava/security/InvalidKeyException;

    const-string v1, "can\'t identify DSA private key."

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

    throw v0
.end method

.method public static generatePublicKeyParameter(Ljava/security/PublicKey;)Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;
    .registers 7

    .prologue
    .line 47
    instance-of v0, p0, Ljava/security/interfaces/DSAPublicKey;

    if-eqz v0, :cond_2d

    .line 49
    check-cast p0, Ljava/security/interfaces/DSAPublicKey;

    .line 51
    new-instance v0, Lorg/spongycastle/crypto/params/DSAPublicKeyParameters;

    invoke-interface {p0}, Ljava/security/interfaces/DSAPublicKey;->getY()Ljava/math/BigInteger;

    move-result-object v1

    new-instance v2, Lorg/spongycastle/crypto/params/DSAParameters;

    .line 52
    invoke-interface {p0}, Ljava/security/interfaces/DSAPublicKey;->getParams()Ljava/security/interfaces/DSAParams;

    move-result-object v3

    invoke-interface {v3}, Ljava/security/interfaces/DSAParams;->getP()Ljava/math/BigInteger;

    move-result-object v3

    invoke-interface {p0}, Ljava/security/interfaces/DSAPublicKey;->getParams()Ljava/security/interfaces/DSAParams;

    move-result-object v4

    invoke-interface {v4}, Ljava/security/interfaces/DSAParams;->getQ()Ljava/math/BigInteger;

    move-result-object v4

    invoke-interface {p0}, Ljava/security/interfaces/DSAPublicKey;->getParams()Ljava/security/interfaces/DSAParams;

    move-result-object v5

    invoke-interface {v5}, Ljava/security/interfaces/DSAParams;->getG()Ljava/math/BigInteger;

    move-result-object v5

    invoke-direct {v2, v3, v4, v5}, Lorg/spongycastle/crypto/params/DSAParameters;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;)V

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

    return-object v0

    .line 55
    :cond_2d
    new-instance v0, Ljava/security/InvalidKeyException;

    new-instance v1, Ljava/lang/StringBuilder;

    const-string v2, "can\'t identify DSA public key: "

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

    invoke-virtual {p0}, Ljava/lang/Object;->getClass()Ljava/lang/Class;

    move-result-object v2

    invoke-virtual {v2}, Ljava/lang/Class;->getName()Ljava/lang/String;

    move-result-object v2

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

    move-result-object v1

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

    move-result-object v1

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

    throw v0
.end method

.method public static isDsaOid(Lorg/spongycastle/asn1/ASN1ObjectIdentifier;)Z
    .registers 4

    .prologue
    const/4 v1, 0x0

    .line 32
    move v0, v1

    :goto_2
    sget-object v2, Lorg/spongycastle/jcajce/provider/asymmetric/dsa/DSAUtil;->dsaOids:[Lorg/spongycastle/asn1/ASN1ObjectIdentifier;

    array-length v2, v2

    if-eq v0, v2, :cond_12

    .line 34
    sget-object v2, Lorg/spongycastle/jcajce/provider/asymmetric/dsa/DSAUtil;->dsaOids:[Lorg/spongycastle/asn1/ASN1ObjectIdentifier;

    aget-object v2, v2, v0

    invoke-virtual {p0, v2}, Lorg/spongycastle/asn1/ASN1ObjectIdentifier;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-eqz v2, :cond_13

    .line 36
    const/4 v1, 0x1

    .line 40
    :cond_12
    return v1

    .line 32
    :cond_13
    add-int/lit8 v0, v0, 0x1

    goto :goto_2
.end method