DESUtil.smali

.class public Lcom/cleanmaster/hpsharelib/base/util/DESUtil;
.super Ljava/lang/Object;
.source "DESUtil.java"


# static fields
.field public static final CIPHER_ALGORITHM:Ljava/lang/String; = "DES/ECB/PKCS5Padding"


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

    .prologue
    .line 12
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static decrypt([B[B)[B
    .registers 5
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .prologue
    .line 24
    new-instance v0, Ljava/lang/String;

    invoke-direct {v0, p0}, Ljava/lang/String;-><init>([B)V

    invoke-static {v0}, Lcom/cleanmaster/hpsharelib/base/util/DESUtil;->keyGenerator(Ljava/lang/String;)Ljava/security/Key;

    move-result-object v0

    .line 25
    const-string v1, "DES/ECB/PKCS5Padding"

    invoke-static {v1}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v1

    .line 26
    const/4 v2, 0x2

    invoke-virtual {v1, v2, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V

    .line 27
    invoke-virtual {v1, p1}, Ljavax/crypto/Cipher;->doFinal([B)[B

    move-result-object v0

    return-object v0
.end method

.method public static encrypt([B[B)[B
    .registers 5
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .prologue
    .line 16
    new-instance v0, Ljava/lang/String;

    invoke-direct {v0, p0}, Ljava/lang/String;-><init>([B)V

    invoke-static {v0}, Lcom/cleanmaster/hpsharelib/base/util/DESUtil;->keyGenerator(Ljava/lang/String;)Ljava/security/Key;

    move-result-object v0

    .line 17
    const-string v1, "DES/ECB/PKCS5Padding"

    invoke-static {v1}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v1

    .line 18
    const/4 v2, 0x1

    invoke-virtual {v1, v2, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V

    .line 19
    invoke-virtual {v1, p1}, Ljavax/crypto/Cipher;->doFinal([B)[B

    move-result-object v0

    return-object v0
.end method

.method private static keyGenerator(Ljava/lang/String;)Ljava/security/Key;
    .registers 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .prologue
    .line 31
    invoke-static {p0}, Lcom/cleanmaster/hpsharelib/base/util/HexUtil;->HexString2Bytes(Ljava/lang/String;)[B

    move-result-object v0

    .line 32
    new-instance v1, Ljavax/crypto/spec/DESKeySpec;

    invoke-direct {v1, v0}, Ljavax/crypto/spec/DESKeySpec;-><init>([B)V

    .line 33
    const-string v0, "DES"

    invoke-static {v0}, Ljavax/crypto/SecretKeyFactory;->getInstance(Ljava/lang/String;)Ljavax/crypto/SecretKeyFactory;

    move-result-object v0

    .line 34
    invoke-virtual {v0, v1}, Ljavax/crypto/SecretKeyFactory;->generateSecret(Ljava/security/spec/KeySpec;)Ljavax/crypto/SecretKey;

    move-result-object v0

    return-object v0
.end method