.class public Lcom/brplug/encrypt/BRRSA;
.super Ljava/lang/Object;
.source "BRRSA.java"


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

.field private static final KEY_LENGTH:I = 0x400


# instance fields
.field private mKey:Ljava/lang/String;


# direct methods
.method public constructor <init>(Ljava/lang/String;)V
    .locals 0

    .line 33
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 34
    iput-object p1, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    return-void
.end method

.method public static generatorKey()[Ljava/lang/String;
    .locals 4

    const/4 v0, 0x2

    .line 43
    :try_start_0
    new-array v0, v0, [Ljava/lang/String;

    const-string v1, "RSA"

    .line 45
    invoke-static {v1}, Ljava/security/KeyPairGenerator;->getInstance(Ljava/lang/String;)Ljava/security/KeyPairGenerator;

    move-result-object v1

    const/16 v2, 0x400

    .line 46
    invoke-virtual {v1, v2}, Ljava/security/KeyPairGenerator;->initialize(I)V

    .line 47
    invoke-virtual {v1}, Ljava/security/KeyPairGenerator;->generateKeyPair()Ljava/security/KeyPair;

    move-result-object v1

    .line 48
    invoke-virtual {v1}, Ljava/security/KeyPair;->getPublic()Ljava/security/PublicKey;

    move-result-object v2

    check-cast v2, Ljava/security/interfaces/RSAPublicKey;

    .line 49
    invoke-virtual {v1}, Ljava/security/KeyPair;->getPrivate()Ljava/security/PrivateKey;

    move-result-object v1

    check-cast v1, Ljava/security/interfaces/RSAPrivateKey;

    const/4 v3, 0x0

    .line 51
    invoke-static {v2}, Lcom/brplug/encrypt/BRRSA;->getPublicKey(Ljava/security/PublicKey;)Ljava/lang/String;

    move-result-object v2

    aput-object v2, v0, v3

    const/4 v2, 0x1

    .line 52
    invoke-static {v1}, Lcom/brplug/encrypt/BRRSA;->getPrivateKey(Ljava/security/PrivateKey;)Ljava/lang/String;

    move-result-object v1

    aput-object v1, v0, v2
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return-object v0

    :catch_0
    move-exception v0

    .line 56
    invoke-virtual {v0}, Ljava/lang/Throwable;->printStackTrace()V

    const-string v0, ""

    .line 59
    filled-new-array {v0, v0}, [Ljava/lang/String;

    move-result-object v0

    return-object v0
.end method

.method private static getPrivateKey(Ljava/security/PrivateKey;)Ljava/lang/String;
    .locals 0
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .line 63
    invoke-interface {p0}, Ljava/security/PrivateKey;->getEncoded()[B

    move-result-object p0

    invoke-static {p0}, Lcom/brplug/encrypt/BRBase64;->encode([B)Ljava/lang/String;

    move-result-object p0

    return-object p0
.end method

.method private static getPublicKey(Ljava/security/PublicKey;)Ljava/lang/String;
    .locals 0
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .line 67
    invoke-interface {p0}, Ljava/security/PublicKey;->getEncoded()[B

    move-result-object p0

    invoke-static {p0}, Lcom/brplug/encrypt/BRBase64;->encode([B)Ljava/lang/String;

    move-result-object p0

    return-object p0
.end method

.method private outputDecrypt(Ljavax/crypto/Cipher;Ljava/lang/String;)[B
    .locals 6
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .line 92
    invoke-static {p2}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object p2

    .line 93
    array-length v0, p2

    .line 96
    new-instance v1, Ljava/io/ByteArrayOutputStream;

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

    const/4 v2, 0x0

    move v3, v2

    :goto_0
    sub-int v4, v0, v2

    if-lez v4, :cond_1

    const/16 v5, 0x80

    if-le v4, v5, :cond_0

    .line 100
    invoke-virtual {p1, p2, v2, v5}, Ljavax/crypto/Cipher;->doFinal([BII)[B

    move-result-object v2

    goto :goto_1

    .line 102
    :cond_0
    invoke-virtual {p1, p2, v2, v4}, Ljavax/crypto/Cipher;->doFinal([BII)[B

    move-result-object v2

    .line 104
    :goto_1
    invoke-virtual {v1, v2}, Ljava/io/ByteArrayOutputStream;->write([B)V

    add-int/lit8 v3, v3, 0x1

    mul-int/lit16 v2, v3, 0x80

    goto :goto_0

    .line 108
    :cond_1
    invoke-virtual {v1}, Ljava/io/ByteArrayOutputStream;->close()V

    .line 109
    invoke-virtual {v1}, Ljava/io/ByteArrayOutputStream;->toByteArray()[B

    move-result-object p1

    return-object p1
.end method

.method private outputEncrypt(Ljavax/crypto/Cipher;Ljava/lang/String;)[B
    .locals 6
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .line 71
    invoke-virtual {p2}, Ljava/lang/String;->getBytes()[B

    move-result-object p2

    .line 72
    array-length v0, p2

    .line 75
    new-instance v1, Ljava/io/ByteArrayOutputStream;

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

    const/4 v2, 0x0

    move v3, v2

    :goto_0
    sub-int v4, v0, v2

    if-lez v4, :cond_1

    const/16 v5, 0x75

    if-le v4, v5, :cond_0

    .line 79
    invoke-virtual {p1, p2, v2, v5}, Ljavax/crypto/Cipher;->doFinal([BII)[B

    move-result-object v2

    goto :goto_1

    .line 81
    :cond_0
    invoke-virtual {p1, p2, v2, v4}, Ljavax/crypto/Cipher;->doFinal([BII)[B

    move-result-object v2

    .line 83
    :goto_1
    invoke-virtual {v1, v2}, Ljava/io/ByteArrayOutputStream;->write([B)V

    add-int/lit8 v3, v3, 0x1

    mul-int/lit8 v2, v3, 0x75

    goto :goto_0

    .line 87
    :cond_1
    invoke-virtual {v1}, Ljava/io/ByteArrayOutputStream;->close()V

    .line 88
    invoke-virtual {v1}, Ljava/io/ByteArrayOutputStream;->toByteArray()[B

    move-result-object p1

    return-object p1
.end method


# virtual methods
.method public decryptByPrivate(Ljava/lang/String;)Ljava/lang/String;
    .locals 3

    .line 141
    :try_start_0
    iget-object v0, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v0}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object v0

    .line 142
    new-instance v1, Ljava/security/spec/PKCS8EncodedKeySpec;

    invoke-direct {v1, v0}, Ljava/security/spec/PKCS8EncodedKeySpec;-><init>([B)V

    const-string v0, "RSA"

    .line 143
    invoke-static {v0}, Ljava/security/KeyFactory;->getInstance(Ljava/lang/String;)Ljava/security/KeyFactory;

    move-result-object v0

    .line 144
    invoke-virtual {v0, v1}, Ljava/security/KeyFactory;->generatePrivate(Ljava/security/spec/KeySpec;)Ljava/security/PrivateKey;

    move-result-object v0

    check-cast v0, Ljava/security/interfaces/RSAPrivateKey;

    const-string v1, "RSA/ECB/PKCS1Padding"

    .line 145
    invoke-static {v1}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v1

    const/4 v2, 0x2

    .line 146
    invoke-virtual {v1, v2, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V

    .line 147
    new-instance v0, Ljava/lang/String;

    invoke-direct {p0, v1, p1}, Lcom/brplug/encrypt/BRRSA;->outputDecrypt(Ljavax/crypto/Cipher;Ljava/lang/String;)[B

    move-result-object p1

    invoke-direct {v0, p1}, Ljava/lang/String;-><init>([B)V
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return-object v0

    :catch_0
    move-exception p1

    .line 149
    invoke-virtual {p1}, Ljava/lang/Throwable;->printStackTrace()V

    const-string p1, ""

    return-object p1
.end method

.method public decryptByPublic(Ljava/lang/String;)Ljava/lang/String;
    .locals 3

    .line 181
    :try_start_0
    iget-object v0, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v0}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object v0

    .line 182
    new-instance v1, Ljava/security/spec/X509EncodedKeySpec;

    invoke-direct {v1, v0}, Ljava/security/spec/X509EncodedKeySpec;-><init>([B)V

    const-string v0, "RSA"

    .line 183
    invoke-static {v0}, Ljava/security/KeyFactory;->getInstance(Ljava/lang/String;)Ljava/security/KeyFactory;

    move-result-object v0

    .line 184
    invoke-virtual {v0, v1}, Ljava/security/KeyFactory;->generatePublic(Ljava/security/spec/KeySpec;)Ljava/security/PublicKey;

    move-result-object v0

    check-cast v0, Ljava/security/interfaces/RSAPublicKey;

    const-string v1, "RSA/ECB/PKCS1Padding"

    .line 185
    invoke-static {v1}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v1

    const/4 v2, 0x2

    .line 186
    invoke-virtual {v1, v2, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V

    .line 187
    new-instance v0, Ljava/lang/String;

    invoke-direct {p0, v1, p1}, Lcom/brplug/encrypt/BRRSA;->outputDecrypt(Ljavax/crypto/Cipher;Ljava/lang/String;)[B

    move-result-object p1

    invoke-direct {v0, p1}, Ljava/lang/String;-><init>([B)V
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return-object v0

    :catch_0
    move-exception p1

    .line 189
    invoke-virtual {p1}, Ljava/lang/Throwable;->printStackTrace()V

    const-string p1, ""

    return-object p1
.end method

.method public encryptByPrivate(Ljava/lang/String;)Ljava/lang/String;
    .locals 4

    .line 118
    iget-object v0, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v0}, Landroid/text/TextUtils;->isEmpty(Ljava/lang/CharSequence;)Z

    move-result v0

    const-string v1, ""

    if-nez v0, :cond_1

    invoke-static {p1}, Landroid/text/TextUtils;->isEmpty(Ljava/lang/CharSequence;)Z

    move-result v0

    if-eqz v0, :cond_0

    goto :goto_0

    .line 121
    :cond_0
    :try_start_0
    iget-object v0, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v0}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object v0

    .line 122
    new-instance v2, Ljava/security/spec/PKCS8EncodedKeySpec;

    invoke-direct {v2, v0}, Ljava/security/spec/PKCS8EncodedKeySpec;-><init>([B)V

    const-string v0, "RSA"

    .line 123
    invoke-static {v0}, Ljava/security/KeyFactory;->getInstance(Ljava/lang/String;)Ljava/security/KeyFactory;

    move-result-object v0

    .line 124
    invoke-virtual {v0, v2}, Ljava/security/KeyFactory;->generatePrivate(Ljava/security/spec/KeySpec;)Ljava/security/PrivateKey;

    move-result-object v0

    check-cast v0, Ljava/security/interfaces/RSAPrivateKey;

    const-string v2, "RSA/ECB/PKCS1Padding"

    .line 125
    invoke-static {v2}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v2

    const/4 v3, 0x1

    .line 126
    invoke-virtual {v2, v3, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V

    .line 127
    invoke-direct {p0, v2, p1}, Lcom/brplug/encrypt/BRRSA;->outputEncrypt(Ljavax/crypto/Cipher;Ljava/lang/String;)[B

    move-result-object p1

    invoke-static {p1}, Lcom/brplug/encrypt/BRBase64;->encode([B)Ljava/lang/String;

    move-result-object p1
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return-object p1

    :catch_0
    move-exception p1

    .line 129
    invoke-virtual {p1}, Ljava/lang/Throwable;->printStackTrace()V

    :cond_1
    :goto_0
    return-object v1
.end method

.method public encryptByPublic(Ljava/lang/String;)Ljava/lang/String;
    .locals 3

    .line 161
    :try_start_0
    iget-object v0, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v0}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object v0

    .line 162
    new-instance v1, Ljava/security/spec/X509EncodedKeySpec;

    invoke-direct {v1, v0}, Ljava/security/spec/X509EncodedKeySpec;-><init>([B)V

    const-string v0, "RSA"

    .line 163
    invoke-static {v0}, Ljava/security/KeyFactory;->getInstance(Ljava/lang/String;)Ljava/security/KeyFactory;

    move-result-object v0

    .line 164
    invoke-virtual {v0, v1}, Ljava/security/KeyFactory;->generatePublic(Ljava/security/spec/KeySpec;)Ljava/security/PublicKey;

    move-result-object v0

    check-cast v0, Ljava/security/interfaces/RSAPublicKey;

    const-string v1, "RSA/ECB/PKCS1Padding"

    .line 165
    invoke-static {v1}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v1

    const/4 v2, 0x1

    .line 166
    invoke-virtual {v1, v2, v0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V

    .line 167
    invoke-direct {p0, v1, p1}, Lcom/brplug/encrypt/BRRSA;->outputEncrypt(Ljavax/crypto/Cipher;Ljava/lang/String;)[B

    move-result-object p1

    invoke-static {p1}, Lcom/brplug/encrypt/BRBase64;->encode([B)Ljava/lang/String;

    move-result-object p1
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return-object p1

    :catch_0
    move-exception p1

    .line 169
    invoke-virtual {p1}, Ljava/lang/Throwable;->printStackTrace()V

    const-string p1, ""

    return-object p1
.end method

.method public privateSign(Ljava/lang/String;)Ljava/lang/String;
    .locals 3

    :try_start_0
    const-string v0, "SHA1withRSA"

    .line 201
    invoke-static {v0}, Ljava/security/Signature;->getInstance(Ljava/lang/String;)Ljava/security/Signature;

    move-result-object v0

    .line 202
    iget-object v1, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v1}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object v1

    .line 204
    new-instance v2, Ljava/security/spec/PKCS8EncodedKeySpec;

    invoke-direct {v2, v1}, Ljava/security/spec/PKCS8EncodedKeySpec;-><init>([B)V

    const-string v1, "RSA"

    .line 205
    invoke-static {v1}, Ljava/security/KeyFactory;->getInstance(Ljava/lang/String;)Ljava/security/KeyFactory;

    move-result-object v1

    .line 207
    invoke-virtual {v1, v2}, Ljava/security/KeyFactory;->generatePrivate(Ljava/security/spec/KeySpec;)Ljava/security/PrivateKey;

    move-result-object v1

    check-cast v1, Ljava/security/interfaces/RSAPrivateKey;

    .line 208
    invoke-virtual {v0, v1}, Ljava/security/Signature;->initSign(Ljava/security/PrivateKey;)V

    .line 209
    invoke-virtual {p1}, Ljava/lang/String;->getBytes()[B

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/security/Signature;->update([B)V

    .line 211
    invoke-virtual {v0}, Ljava/security/Signature;->sign()[B

    move-result-object p1

    invoke-static {p1}, Lcom/brplug/encrypt/BRBase64;->encode([B)Ljava/lang/String;

    move-result-object p1
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return-object p1

    :catch_0
    move-exception p1

    .line 213
    invoke-virtual {p1}, Ljava/lang/Throwable;->printStackTrace()V

    const-string p1, ""

    return-object p1
.end method

.method public publicVerify(Ljava/lang/String;Ljava/lang/String;)Z
    .locals 3

    :try_start_0
    const-string v0, "SHA1withRSA"

    .line 226
    invoke-static {v0}, Ljava/security/Signature;->getInstance(Ljava/lang/String;)Ljava/security/Signature;

    move-result-object v0

    .line 227
    iget-object v1, p0, Lcom/brplug/encrypt/BRRSA;->mKey:Ljava/lang/String;

    invoke-static {v1}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object v1

    .line 229
    new-instance v2, Ljava/security/spec/X509EncodedKeySpec;

    invoke-direct {v2, v1}, Ljava/security/spec/X509EncodedKeySpec;-><init>([B)V

    const-string v1, "RSA"

    .line 230
    invoke-static {v1}, Ljava/security/KeyFactory;->getInstance(Ljava/lang/String;)Ljava/security/KeyFactory;

    move-result-object v1

    .line 232
    invoke-virtual {v1, v2}, Ljava/security/KeyFactory;->generatePublic(Ljava/security/spec/KeySpec;)Ljava/security/PublicKey;

    move-result-object v1

    check-cast v1, Ljava/security/interfaces/RSAPublicKey;

    .line 233
    invoke-virtual {v0, v1}, Ljava/security/Signature;->initVerify(Ljava/security/PublicKey;)V

    .line 234
    invoke-virtual {p2}, Ljava/lang/String;->getBytes()[B

    move-result-object p2

    invoke-virtual {v0, p2}, Ljava/security/Signature;->update([B)V

    .line 236
    invoke-static {p1}, Lcom/brplug/encrypt/BRBase64;->decode(Ljava/lang/String;)[B

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/security/Signature;->verify([B)Z

    move-result p1
    :try_end_0
    .catch Ljava/lang/Throwable; {:try_start_0 .. :try_end_0} :catch_0

    return p1

    :catch_0
    move-exception p1

    .line 238
    invoke-virtual {p1}, Ljava/lang/Throwable;->printStackTrace()V

    const/4 p1, 0x0

    return p1
.end method