MnemonicCode.smali

.class public Lorg/bitcoinj/crypto/MnemonicCode;
.super Ljava/lang/Object;
.source "MnemonicCode.java"


# static fields
.field private static final BIP39_ENGLISH_RESOURCE_NAME:Ljava/lang/String; = "mnemonic/wordlist/english.txt"

.field private static final BIP39_ENGLISH_SHA256:Ljava/lang/String; = "ad90bf3beb7b0eb7e5acd74727dc0da96e0a280a258354e7293fb7e211ac03db"

.field public static BIP39_STANDARDISATION_TIME_SECS:J = 0x0L

.field public static INSTANCE:Lorg/bitcoinj/crypto/MnemonicCode; = null

.field private static final PBKDF2_ROUNDS:I = 0x800

.field private static final log:Lorg/slf4j/Logger;


# instance fields
.field private wordList:Ljava/util/ArrayList;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "Ljava/util/ArrayList",
            "<",
            "Ljava/lang/String;",
            ">;"
        }
    .end annotation
.end field


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

    .prologue
    .line 46
    const-class v0, Lorg/bitcoinj/crypto/MnemonicCode;

    invoke-static {v0}, Lorg/slf4j/LoggerFactory;->getLogger(Ljava/lang/Class;)Lorg/slf4j/Logger;

    move-result-object v0

    sput-object v0, Lorg/bitcoinj/crypto/MnemonicCode;->log:Lorg/slf4j/Logger;

    .line 54
    const-wide/32 v0, 0x52549c80

    sput-wide v0, Lorg/bitcoinj/crypto/MnemonicCode;->BIP39_STANDARDISATION_TIME_SECS:J

    .line 62
    :try_start_d
    new-instance v0, Lorg/bitcoinj/crypto/MnemonicCode;

    invoke-direct {v0}, Lorg/bitcoinj/crypto/MnemonicCode;-><init>()V

    sput-object v0, Lorg/bitcoinj/crypto/MnemonicCode;->INSTANCE:Lorg/bitcoinj/crypto/MnemonicCode;
    :try_end_14
    .catch Ljava/io/FileNotFoundException; {:try_start_d .. :try_end_14} :catch_15
    .catch Ljava/io/IOException; {:try_start_d .. :try_end_14} :catch_24

    .line 70
    :cond_14
    :goto_14
    return-void

    .line 63
    :catch_15
    move-exception v0

    .line 65
    invoke-static {}, Lorg/bitcoinj/core/Utils;->isAndroidRuntime()Z

    move-result v1

    if-nez v1, :cond_14

    .line 66
    sget-object v1, Lorg/bitcoinj/crypto/MnemonicCode;->log:Lorg/slf4j/Logger;

    const-string v2, "Could not find word list"

    invoke-interface {v1, v2, v0}, Lorg/slf4j/Logger;->error(Ljava/lang/String;Ljava/lang/Throwable;)V

    goto :goto_14

    .line 67
    :catch_24
    move-exception v0

    .line 68
    sget-object v1, Lorg/bitcoinj/crypto/MnemonicCode;->log:Lorg/slf4j/Logger;

    const-string v2, "Failed to load word list"

    invoke-interface {v1, v2, v0}, Lorg/slf4j/Logger;->error(Ljava/lang/String;Ljava/lang/Throwable;)V

    goto :goto_14
.end method

.method public constructor <init>()V
    .registers 3

    .prologue
    .line 74
    invoke-static {}, Lorg/bitcoinj/crypto/MnemonicCode;->openDefaultWords()Ljava/io/InputStream;

    move-result-object v0

    const-string v1, "ad90bf3beb7b0eb7e5acd74727dc0da96e0a280a258354e7293fb7e211ac03db"

    invoke-direct {p0, v0, v1}, Lorg/bitcoinj/crypto/MnemonicCode;-><init>(Ljava/io/InputStream;Ljava/lang/String;)V

    .line 75
    return-void
.end method

.method public constructor <init>(Ljava/io/InputStream;Ljava/lang/String;)V
    .registers 8

    .prologue
    const/16 v4, 0x800

    .line 88
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 89
    new-instance v0, Ljava/io/BufferedReader;

    new-instance v1, Ljava/io/InputStreamReader;

    const-string v2, "UTF-8"

    invoke-direct {v1, p1, v2}, Ljava/io/InputStreamReader;-><init>(Ljava/io/InputStream;Ljava/lang/String;)V

    invoke-direct {v0, v1}, Ljava/io/BufferedReader;-><init>(Ljava/io/Reader;)V

    .line 90
    new-instance v1, Ljava/util/ArrayList;

    invoke-direct {v1, v4}, Ljava/util/ArrayList;-><init>(I)V

    iput-object v1, p0, Lorg/bitcoinj/crypto/MnemonicCode;->wordList:Ljava/util/ArrayList;

    .line 91
    invoke-static {}, Lorg/bitcoinj/core/Sha256Hash;->newDigest()Ljava/security/MessageDigest;

    move-result-object v1

    .line 93
    :goto_1c
    invoke-virtual {v0}, Ljava/io/BufferedReader;->readLine()Ljava/lang/String;

    move-result-object v2

    if-eqz v2, :cond_2f

    .line 94
    invoke-virtual {v2}, Ljava/lang/String;->getBytes()[B

    move-result-object v3

    invoke-virtual {v1, v3}, Ljava/security/MessageDigest;->update([B)V

    .line 95
    iget-object v3, p0, Lorg/bitcoinj/crypto/MnemonicCode;->wordList:Ljava/util/ArrayList;

    invoke-virtual {v3, v2}, Ljava/util/ArrayList;->add(Ljava/lang/Object;)Z

    goto :goto_1c

    .line 97
    :cond_2f
    invoke-virtual {v0}, Ljava/io/BufferedReader;->close()V

    .line 99
    iget-object v0, p0, Lorg/bitcoinj/crypto/MnemonicCode;->wordList:Ljava/util/ArrayList;

    invoke-virtual {v0}, Ljava/util/ArrayList;->size()I

    move-result v0

    if-eq v0, v4, :cond_42

    .line 100
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "input stream did not contain 2048 words"

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

    throw v0

    .line 103
    :cond_42
    if-eqz p2, :cond_5c

    .line 104
    invoke-virtual {v1}, Ljava/security/MessageDigest;->digest()[B

    move-result-object v0

    .line 105
    sget-object v1, Lorg/bitcoinj/core/Utils;->HEX:Lcom/google/common/io/BaseEncoding;

    invoke-virtual {v1, v0}, Lcom/google/common/io/BaseEncoding;->encode([B)Ljava/lang/String;

    move-result-object v0

    .line 106
    invoke-virtual {v0, p2}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v0

    if-nez v0, :cond_5c

    .line 107
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "wordlist digest mismatch"

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

    throw v0

    .line 109
    :cond_5c
    return-void
.end method

.method private static bytesToBits([B)[Z
    .registers 9

    .prologue
    const/4 v3, 0x1

    const/4 v1, 0x0

    .line 242
    array-length v0, p0

    shl-int/lit8 v0, v0, 0x3

    new-array v5, v0, [Z

    move v0, v1

    .line 243
    :goto_8
    array-length v2, p0

    if-ge v0, v2, :cond_29

    move v4, v1

    .line 244
    :goto_c
    const/16 v2, 0x8

    if-ge v4, v2, :cond_26

    .line 245
    shl-int/lit8 v2, v0, 0x3

    add-int v6, v2, v4

    aget-byte v2, p0, v0

    rsub-int/lit8 v7, v4, 0x7

    shl-int v7, v3, v7

    and-int/2addr v2, v7

    if-eqz v2, :cond_24

    move v2, v3

    :goto_1e
    aput-boolean v2, v5, v6

    .line 244
    add-int/lit8 v2, v4, 0x1

    move v4, v2

    goto :goto_c

    :cond_24
    move v2, v1

    .line 245
    goto :goto_1e

    .line 243
    :cond_26
    add-int/lit8 v0, v0, 0x1

    goto :goto_8

    .line 246
    :cond_29
    return-object v5
.end method

.method private static openDefaultWords()Ljava/io/InputStream;
    .registers 2

    .prologue
    .line 78
    const-class v0, Lorg/bitcoinj/crypto/MnemonicCode;

    const-string v1, "mnemonic/wordlist/english.txt"

    invoke-virtual {v0, v1}, Ljava/lang/Class;->getResourceAsStream(Ljava/lang/String;)Ljava/io/InputStream;

    move-result-object v0

    .line 79
    if-nez v0, :cond_12

    .line 80
    new-instance v0, Ljava/io/FileNotFoundException;

    const-string v1, "mnemonic/wordlist/english.txt"

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

    throw v0

    .line 81
    :cond_12
    return-object v0
.end method

.method public static toSeed(Ljava/util/List;Ljava/lang/String;)[B
    .registers 7
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Ljava/util/List",
            "<",
            "Ljava/lang/String;",
            ">;",
            "Ljava/lang/String;",
            ")[B"
        }
    .end annotation

    .prologue
    .line 130
    invoke-static {p0}, Lorg/bitcoinj/core/Utils;->join(Ljava/lang/Iterable;)Ljava/lang/String;

    move-result-object v0

    .line 131
    new-instance v1, Ljava/lang/StringBuilder;

    const-string v2, "mnemonic"

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

    invoke-virtual {v1, p1}, 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

    .line 133
    invoke-static {}, Lcom/google/common/base/s;->wT()Lcom/google/common/base/s;

    move-result-object v2

    .line 134
    const/16 v3, 0x800

    const/16 v4, 0x40

    invoke-static {v0, v1, v3, v4}, Lorg/bitcoinj/crypto/PBKDF2SHA512;->derive(Ljava/lang/String;Ljava/lang/String;II)[B

    move-result-object v0

    .line 135
    invoke-virtual {v2}, Lcom/google/common/base/s;->wU()Lcom/google/common/base/s;

    .line 136
    sget-object v1, Lorg/bitcoinj/crypto/MnemonicCode;->log:Lorg/slf4j/Logger;

    const-string v3, "PBKDF2 took {}"

    invoke-interface {v1, v3, v2}, Lorg/slf4j/Logger;->info(Ljava/lang/String;Ljava/lang/Object;)V

    .line 137
    return-object v0
.end method


# virtual methods
.method public check(Ljava/util/List;)V
    .registers 2
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Ljava/util/List",
            "<",
            "Ljava/lang/String;",
            ">;)V"
        }
    .end annotation

    .prologue
    .line 238
    invoke-virtual {p0, p1}, Lorg/bitcoinj/crypto/MnemonicCode;->toEntropy(Ljava/util/List;)[B

    .line 239
    return-void
.end method

.method public getWordList()Ljava/util/List;
    .registers 2
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "()",
            "Ljava/util/List",
            "<",
            "Ljava/lang/String;",
            ">;"
        }
    .end annotation

    .prologue
    .line 115
    iget-object v0, p0, Lorg/bitcoinj/crypto/MnemonicCode;->wordList:Ljava/util/ArrayList;

    return-object v0
.end method

.method public toEntropy(Ljava/util/List;)[B
    .registers 12
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Ljava/util/List",
            "<",
            "Ljava/lang/String;",
            ">;)[B"
        }
    .end annotation

    .prologue
    const/4 v3, 0x1

    const/4 v2, 0x0

    .line 144
    invoke-interface {p1}, Ljava/util/List;->size()I

    move-result v0

    rem-int/lit8 v0, v0, 0x3

    if-lez v0, :cond_12

    .line 145
    new-instance v0, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;

    const-string v1, "Word list size must be multiple of three words."

    invoke-direct {v0, v1}, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 147
    :cond_12
    invoke-interface {p1}, Ljava/util/List;->size()I

    move-result v0

    if-nez v0, :cond_20

    .line 148
    new-instance v0, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;

    const-string v1, "Word list is empty."

    invoke-direct {v0, v1}, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 153
    :cond_20
    invoke-interface {p1}, Ljava/util/List;->size()I

    move-result v0

    mul-int/lit8 v5, v0, 0xb

    .line 154
    new-array v6, v5, [Z

    .line 156
    invoke-interface {p1}, Ljava/util/List;->iterator()Ljava/util/Iterator;

    move-result-object v7

    move v1, v2

    :goto_2d
    invoke-interface {v7}, Ljava/util/Iterator;->hasNext()Z

    move-result v0

    if-eqz v0, :cond_64

    invoke-interface {v7}, Ljava/util/Iterator;->next()Ljava/lang/Object;

    move-result-object v0

    check-cast v0, Ljava/lang/String;

    .line 158
    iget-object v4, p0, Lorg/bitcoinj/crypto/MnemonicCode;->wordList:Ljava/util/ArrayList;

    invoke-static {v4, v0}, Ljava/util/Collections;->binarySearch(Ljava/util/List;Ljava/lang/Object;)I

    move-result v8

    .line 159
    if-gez v8, :cond_47

    .line 160
    new-instance v1, Lorg/bitcoinj/crypto/MnemonicException$MnemonicWordException;

    invoke-direct {v1, v0}, Lorg/bitcoinj/crypto/MnemonicException$MnemonicWordException;-><init>(Ljava/lang/String;)V

    throw v1

    :cond_47
    move v4, v2

    .line 163
    :goto_48
    const/16 v0, 0xb

    if-ge v4, v0, :cond_60

    .line 164
    mul-int/lit8 v0, v1, 0xb

    add-int v9, v0, v4

    rsub-int/lit8 v0, v4, 0xa

    shl-int v0, v3, v0

    and-int/2addr v0, v8

    if-eqz v0, :cond_5e

    move v0, v3

    :goto_58
    aput-boolean v0, v6, v9

    .line 163
    add-int/lit8 v0, v4, 0x1

    move v4, v0

    goto :goto_48

    :cond_5e
    move v0, v2

    .line 164
    goto :goto_58

    .line 165
    :cond_60
    add-int/lit8 v0, v1, 0x1

    move v1, v0

    .line 166
    goto :goto_2d

    .line 168
    :cond_64
    div-int/lit8 v4, v5, 0x21

    .line 169
    sub-int/2addr v5, v4

    .line 172
    div-int/lit8 v0, v5, 0x8

    new-array v7, v0, [B

    move v0, v2

    .line 173
    :goto_6c
    array-length v1, v7

    if-ge v0, v1, :cond_8b

    move v1, v2

    .line 174
    :goto_70
    const/16 v8, 0x8

    if-ge v1, v8, :cond_88

    .line 175
    shl-int/lit8 v8, v0, 0x3

    add-int/2addr v8, v1

    aget-boolean v8, v6, v8

    if-eqz v8, :cond_85

    .line 176
    aget-byte v8, v7, v0

    rsub-int/lit8 v9, v1, 0x7

    shl-int v9, v3, v9

    or-int/2addr v8, v9

    int-to-byte v8, v8

    aput-byte v8, v7, v0

    .line 174
    :cond_85
    add-int/lit8 v1, v1, 0x1

    goto :goto_70

    .line 173
    :cond_88
    add-int/lit8 v0, v0, 0x1

    goto :goto_6c

    .line 179
    :cond_8b
    invoke-static {v7}, Lorg/bitcoinj/core/Sha256Hash;->hash([B)[B

    move-result-object v0

    .line 180
    invoke-static {v0}, Lorg/bitcoinj/crypto/MnemonicCode;->bytesToBits([B)[Z

    move-result-object v0

    .line 183
    :goto_93
    if-ge v2, v4, :cond_a6

    .line 184
    add-int v1, v5, v2

    aget-boolean v1, v6, v1

    aget-boolean v3, v0, v2

    if-eq v1, v3, :cond_a3

    .line 185
    new-instance v0, Lorg/bitcoinj/crypto/MnemonicException$MnemonicChecksumException;

    invoke-direct {v0}, Lorg/bitcoinj/crypto/MnemonicException$MnemonicChecksumException;-><init>()V

    throw v0

    .line 183
    :cond_a3
    add-int/lit8 v2, v2, 0x1

    goto :goto_93

    .line 187
    :cond_a6
    return-object v7
.end method

.method public toMnemonic([B)Ljava/util/List;
    .registers 10
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "([B)",
            "Ljava/util/List",
            "<",
            "Ljava/lang/String;",
            ">;"
        }
    .end annotation

    .prologue
    const/4 v2, 0x0

    .line 194
    array-length v0, p1

    rem-int/lit8 v0, v0, 0x4

    if-lez v0, :cond_e

    .line 195
    new-instance v0, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;

    const-string v1, "Entropy length not multiple of 32 bits."

    invoke-direct {v0, v1}, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 197
    :cond_e
    array-length v0, p1

    if-nez v0, :cond_19

    .line 198
    new-instance v0, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;

    const-string v1, "Entropy is empty."

    invoke-direct {v0, v1}, Lorg/bitcoinj/crypto/MnemonicException$MnemonicLengthException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 203
    :cond_19
    invoke-static {p1}, Lorg/bitcoinj/core/Sha256Hash;->hash([B)[B

    move-result-object v0

    .line 204
    invoke-static {v0}, Lorg/bitcoinj/crypto/MnemonicCode;->bytesToBits([B)[Z

    move-result-object v0

    .line 206
    invoke-static {p1}, Lorg/bitcoinj/crypto/MnemonicCode;->bytesToBits([B)[Z

    move-result-object v1

    .line 207
    array-length v3, v1

    div-int/lit8 v3, v3, 0x20

    .line 210
    array-length v4, v1

    add-int/2addr v4, v3

    new-array v4, v4, [Z

    .line 211
    array-length v5, v1

    invoke-static {v1, v2, v4, v2, v5}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 212
    array-length v1, v1

    invoke-static {v0, v2, v4, v1, v3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 219
    new-instance v5, Ljava/util/ArrayList;

    invoke-direct {v5}, Ljava/util/ArrayList;-><init>()V

    .line 220
    array-length v0, v4

    div-int/lit8 v6, v0, 0xb

    move v3, v2

    .line 221
    :goto_3d
    if-ge v3, v6, :cond_60

    move v1, v2

    move v0, v2

    .line 223
    :goto_41
    const/16 v7, 0xb

    if-ge v1, v7, :cond_53

    .line 224
    shl-int/lit8 v0, v0, 0x1

    .line 225
    mul-int/lit8 v7, v3, 0xb

    add-int/2addr v7, v1

    aget-boolean v7, v4, v7

    if-eqz v7, :cond_50

    .line 226
    or-int/lit8 v0, v0, 0x1

    .line 223
    :cond_50
    add-int/lit8 v1, v1, 0x1

    goto :goto_41

    .line 228
    :cond_53
    iget-object v1, p0, Lorg/bitcoinj/crypto/MnemonicCode;->wordList:Ljava/util/ArrayList;

    invoke-virtual {v1, v0}, Ljava/util/ArrayList;->get(I)Ljava/lang/Object;

    move-result-object v0

    invoke-virtual {v5, v0}, Ljava/util/ArrayList;->add(Ljava/lang/Object;)Z

    .line 221
    add-int/lit8 v0, v3, 0x1

    move v3, v0

    goto :goto_3d

    .line 231
    :cond_60
    return-object v5
.end method