AesUtil.smali

.class public Lcom/iwangding/basis/util/AesUtil;
.super Ljava/lang/Object;
.source "AesUtil.java"


# static fields
.field private static final SHA1PRNG:Ljava/lang/String; = "SHA1PRNG"

.field private static final charset:Ljava/lang/String; = "UTF-8"


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

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

    return-void
.end method

.method private static byte2Hex([B)Ljava/lang/String;
    .registers 6

    .prologue
    .line 145
    new-instance v1, Ljava/lang/StringBuilder;

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

    .line 146
    const/4 v0, 0x0

    :goto_6
    array-length v2, p0

    if-ge v0, v2, :cond_27

    .line 147
    aget-byte v2, p0, v0

    and-int/lit16 v2, v2, 0xff

    invoke-static {v2}, Ljava/lang/Integer;->toHexString(I)Ljava/lang/String;

    move-result-object v2

    .line 148
    invoke-virtual {v2}, Ljava/lang/String;->length()I

    move-result v3

    const/4 v4, 0x1

    if-ne v3, v4, :cond_1d

    .line 149
    const-string v3, "0"

    invoke-virtual {v1, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    .line 151
    :cond_1d
    invoke-virtual {v2}, Ljava/lang/String;->toUpperCase()Ljava/lang/String;

    move-result-object v2

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

    .line 146
    add-int/lit8 v0, v0, 0x1

    goto :goto_6

    .line 153
    :cond_27
    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v0

    return-object v0
.end method

.method public static decrypt(Ljava/lang/String;)Ljava/lang/String;
    .registers 3

    .prologue
    .line 123
    invoke-static {}, Lcom/iwangding/basis/util/AesUtil;->nativeGetAESKey()Ljava/lang/String;

    move-result-object v0

    invoke-static {}, Lcom/iwangding/basis/util/AesUtil;->nativeGetAESIv()Ljava/lang/String;

    move-result-object v1

    invoke-static {p0, v0, v1}, Lcom/iwangding/basis/util/AesUtil;->decrypt(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

    move-result-object v0

    return-object v0
.end method

.method public static decrypt(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
    .registers 8

    .prologue
    const/4 v1, 0x0

    .line 91
    if-eqz p1, :cond_b

    invoke-virtual {p1}, Ljava/lang/String;->length()I

    move-result v0

    const/16 v2, 0x10

    if-eq v0, v2, :cond_d

    :cond_b
    move-object v0, v1

    .line 119
    :goto_c
    return-object v0

    .line 95
    :cond_d
    :try_start_d
    invoke-virtual {p1}, Ljava/lang/String;->getBytes()[B

    move-result-object v0

    .line 96
    new-instance v2, Ljavax/crypto/spec/SecretKeySpec;

    const-string v3, "AES"

    invoke-direct {v2, v0, v3}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    .line 97
    const-string v0, "AES/CBC/PKCS5Padding"

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

    move-result-object v0

    .line 98
    new-instance v3, Ljavax/crypto/spec/IvParameterSpec;

    invoke-virtual {p2}, Ljava/lang/String;->getBytes()[B

    move-result-object v4

    invoke-direct {v3, v4}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V

    .line 99
    const/4 v4, 0x2

    invoke-virtual {v0, v4, v2, v3}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V

    .line 101
    const/4 v2, 0x0

    invoke-static {p0, v2}, Landroid/util/Base64;->decode(Ljava/lang/String;I)[B

    move-result-object v2

    .line 102
    invoke-virtual {v0, v2}, Ljavax/crypto/Cipher;->doFinal([B)[B

    move-result-object v2

    .line 103
    new-instance v0, Ljava/lang/String;

    const-string v3, "UTF-8"

    invoke-direct {v0, v2, v3}, Ljava/lang/String;-><init>([BLjava/lang/String;)V
    :try_end_3b
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_d .. :try_end_3b} :catch_3c
    .catch Ljavax/crypto/NoSuchPaddingException; {:try_start_d .. :try_end_3b} :catch_49
    .catch Ljava/security/InvalidKeyException; {:try_start_d .. :try_end_3b} :catch_47
    .catch Ljavax/crypto/IllegalBlockSizeException; {:try_start_d .. :try_end_3b} :catch_45
    .catch Ljavax/crypto/BadPaddingException; {:try_start_d .. :try_end_3b} :catch_43
    .catch Ljava/io/UnsupportedEncodingException; {:try_start_d .. :try_end_3b} :catch_41
    .catch Ljava/security/InvalidAlgorithmParameterException; {:try_start_d .. :try_end_3b} :catch_3f

    goto :goto_c

    .line 104
    :catch_3c
    move-exception v0

    :goto_3d
    move-object v0, v1

    .line 119
    goto :goto_c

    .line 116
    :catch_3f
    move-exception v0

    goto :goto_3d

    .line 114
    :catch_41
    move-exception v0

    goto :goto_3d

    .line 112
    :catch_43
    move-exception v0

    goto :goto_3d

    .line 110
    :catch_45
    move-exception v0

    goto :goto_3d

    .line 108
    :catch_47
    move-exception v0

    goto :goto_3d

    .line 106
    :catch_49
    move-exception v0

    goto :goto_3d
.end method

.method public static encrypt(Ljava/lang/String;)Ljava/lang/String;
    .registers 3

    .prologue
    .line 80
    invoke-static {}, Lcom/iwangding/basis/util/AesUtil;->nativeGetAESKey()Ljava/lang/String;

    move-result-object v0

    invoke-static {}, Lcom/iwangding/basis/util/AesUtil;->nativeGetAESIv()Ljava/lang/String;

    move-result-object v1

    invoke-static {p0, v0, v1}, Lcom/iwangding/basis/util/AesUtil;->encrypt(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

    move-result-object v0

    return-object v0
.end method

.method public static encrypt(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
    .registers 8

    .prologue
    const/4 v1, 0x0

    .line 45
    if-eqz p1, :cond_b

    invoke-virtual {p1}, Ljava/lang/String;->length()I

    move-result v0

    const/16 v2, 0x10

    if-eq v0, v2, :cond_d

    :cond_b
    move-object v0, v1

    .line 75
    :goto_c
    return-object v0

    .line 49
    :cond_d
    :try_start_d
    invoke-virtual {p1}, Ljava/lang/String;->getBytes()[B

    move-result-object v0

    .line 50
    new-instance v2, Ljavax/crypto/spec/SecretKeySpec;

    const-string v3, "AES"

    invoke-direct {v2, v0, v3}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    .line 51
    new-instance v0, Ljavax/crypto/spec/IvParameterSpec;

    invoke-virtual {p2}, Ljava/lang/String;->getBytes()[B

    move-result-object v3

    invoke-direct {v0, v3}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V

    .line 52
    const-string v3, "AES/CBC/PKCS5Padding"

    invoke-static {v3}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v3

    .line 53
    const/4 v4, 0x1

    invoke-virtual {v3, v4, v2, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V

    .line 54
    const-string v0, "UTF-8"

    invoke-virtual {p0, v0}, Ljava/lang/String;->getBytes(Ljava/lang/String;)[B

    move-result-object v0

    invoke-virtual {v3, v0}, Ljavax/crypto/Cipher;->doFinal([B)[B

    move-result-object v0

    .line 56
    const/4 v2, 0x2

    invoke-static {v0, v2}, Landroid/util/Base64;->encode([BI)[B

    move-result-object v2

    .line 57
    new-instance v0, Ljava/lang/String;

    invoke-direct {v0, v2}, Ljava/lang/String;-><init>([B)V
    :try_end_3f
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_d .. :try_end_3f} :catch_40
    .catch Ljavax/crypto/NoSuchPaddingException; {:try_start_d .. :try_end_3f} :catch_4f
    .catch Ljava/io/UnsupportedEncodingException; {:try_start_d .. :try_end_3f} :catch_4d
    .catch Ljava/security/InvalidKeyException; {:try_start_d .. :try_end_3f} :catch_4b
    .catch Ljavax/crypto/IllegalBlockSizeException; {:try_start_d .. :try_end_3f} :catch_49
    .catch Ljavax/crypto/BadPaddingException; {:try_start_d .. :try_end_3f} :catch_47
    .catch Ljava/security/InvalidAlgorithmParameterException; {:try_start_d .. :try_end_3f} :catch_45
    .catch Ljava/lang/Exception; {:try_start_d .. :try_end_3f} :catch_43

    goto :goto_c

    .line 58
    :catch_40
    move-exception v0

    :goto_41
    move-object v0, v1

    .line 75
    goto :goto_c

    .line 72
    :catch_43
    move-exception v0

    goto :goto_41

    .line 70
    :catch_45
    move-exception v0

    goto :goto_41

    .line 68
    :catch_47
    move-exception v0

    goto :goto_41

    .line 66
    :catch_49
    move-exception v0

    goto :goto_41

    .line 64
    :catch_4b
    move-exception v0

    goto :goto_41

    .line 62
    :catch_4d
    move-exception v0

    goto :goto_41

    .line 60
    :catch_4f
    move-exception v0

    goto :goto_41
.end method

.method public static generateKey()Ljava/lang/String;
    .registers 2

    .prologue
    .line 131
    :try_start_0
    const-string v0, "SHA1PRNG"

    invoke-static {v0}, Ljava/security/SecureRandom;->getInstance(Ljava/lang/String;)Ljava/security/SecureRandom;

    move-result-object v0

    .line 132
    const/16 v1, 0x14

    new-array v1, v1, [B

    .line 133
    invoke-virtual {v0, v1}, Ljava/security/SecureRandom;->nextBytes([B)V

    .line 134
    invoke-static {v1}, Lcom/iwangding/basis/util/AesUtil;->byte2Hex([B)Ljava/lang/String;
    :try_end_10
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_10} :catch_12

    move-result-object v0

    .line 138
    :goto_11
    return-object v0

    .line 135
    :catch_12
    move-exception v0

    .line 138
    const/4 v0, 0x0

    goto :goto_11
.end method

.method private static hex2Byte(Ljava/lang/String;)[B
    .registers 6

    .prologue
    .line 160
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v0

    div-int/lit8 v1, v0, 0x2

    .line 161
    new-array v2, v1, [B

    .line 162
    const/4 v0, 0x0

    :goto_9
    if-ge v0, v1, :cond_25

    .line 163
    mul-int/lit8 v3, v0, 0x2

    mul-int/lit8 v4, v0, 0x2

    add-int/lit8 v4, v4, 0x2

    invoke-virtual {p0, v3, v4}, Ljava/lang/String;->substring(II)Ljava/lang/String;

    move-result-object v3

    const/16 v4, 0x10

    invoke-static {v3, v4}, Ljava/lang/Integer;->valueOf(Ljava/lang/String;I)Ljava/lang/Integer;

    move-result-object v3

    invoke-virtual {v3}, Ljava/lang/Integer;->intValue()I

    move-result v3

    int-to-byte v3, v3

    .line 164
    aput-byte v3, v2, v0

    .line 162
    add-int/lit8 v0, v0, 0x1

    goto :goto_9

    .line 166
    :cond_25
    return-object v2
.end method

.method public static nativeGetAESIv()Ljava/lang/String;
    .registers 2

    .prologue
    .line 33
    new-instance v0, Ljava/lang/String;

    sget-object v1, Lcom/iwangding/ssmp/function/p2p/a;->b:[B

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

    return-object v0
.end method

.method public static nativeGetAESKey()Ljava/lang/String;
    .registers 2

    .prologue
    .line 28
    new-instance v0, Ljava/lang/String;

    sget-object v1, Lcom/iwangding/ssmp/function/p2p/a;->a:[B

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

    return-object v0
.end method