TransactionSignature.smali

.class public Lorg/bitcoinj/crypto/TransactionSignature;
.super Lorg/bitcoinj/core/ECKey$ECDSASignature;
.source "TransactionSignature.java"


# instance fields
.field public final sighashFlags:I


# direct methods
.method public constructor <init>(Ljava/math/BigInteger;Ljava/math/BigInteger;)V
    .registers 4

    .prologue
    .line 43
    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->ALL:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v0, v0, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    invoke-direct {p0, p1, p2, v0}, Lorg/bitcoinj/crypto/TransactionSignature;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;I)V

    .line 44
    return-void
.end method

.method public constructor <init>(Ljava/math/BigInteger;Ljava/math/BigInteger;I)V
    .registers 4

    .prologue
    .line 48
    invoke-direct {p0, p1, p2}, Lorg/bitcoinj/core/ECKey$ECDSASignature;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;)V

    .line 49
    iput p3, p0, Lorg/bitcoinj/crypto/TransactionSignature;->sighashFlags:I

    .line 50
    return-void
.end method

.method public constructor <init>(Lorg/bitcoinj/core/ECKey$ECDSASignature;Lorg/bitcoinj/core/Transaction$SigHash;Z)V
    .registers 6

    .prologue
    .line 54
    iget-object v0, p1, Lorg/bitcoinj/core/ECKey$ECDSASignature;->r:Ljava/math/BigInteger;

    iget-object v1, p1, Lorg/bitcoinj/core/ECKey$ECDSASignature;->s:Ljava/math/BigInteger;

    invoke-direct {p0, v0, v1}, Lorg/bitcoinj/core/ECKey$ECDSASignature;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;)V

    .line 55
    invoke-static {p2, p3}, Lorg/bitcoinj/crypto/TransactionSignature;->calcSigHashValue(Lorg/bitcoinj/core/Transaction$SigHash;Z)I

    move-result v0

    iput v0, p0, Lorg/bitcoinj/crypto/TransactionSignature;->sighashFlags:I

    .line 56
    return-void
.end method

.method public static calcSigHashValue(Lorg/bitcoinj/core/Transaction$SigHash;Z)I
    .registers 4

    .prologue
    .line 71
    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->ALL:Lorg/bitcoinj/core/Transaction$SigHash;

    if-eq v0, p0, :cond_c

    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->NONE:Lorg/bitcoinj/core/Transaction$SigHash;

    if-eq v0, p0, :cond_c

    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->SINGLE:Lorg/bitcoinj/core/Transaction$SigHash;

    if-ne v0, p0, :cond_1a

    :cond_c
    const/4 v0, 0x1

    :goto_d
    invoke-static {v0}, Lcom/google/common/base/n;->checkArgument(Z)V

    .line 72
    iget v0, p0, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    .line 73
    if-eqz p1, :cond_19

    .line 74
    sget-object v1, Lorg/bitcoinj/core/Transaction$SigHash;->ANYONECANPAY:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v1, v1, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    or-int/2addr v0, v1

    .line 75
    :cond_19
    return v0

    .line 71
    :cond_1a
    const/4 v0, 0x0

    goto :goto_d
.end method

.method public static decodeFromBitcoin([BZ)Lorg/bitcoinj/crypto/TransactionSignature;
    .registers 3
    .annotation runtime Ljava/lang/Deprecated;
    .end annotation

    .prologue
    .line 170
    const/4 v0, 0x0

    invoke-static {p0, p1, v0}, Lorg/bitcoinj/crypto/TransactionSignature;->decodeFromBitcoin([BZZ)Lorg/bitcoinj/crypto/TransactionSignature;

    move-result-object v0

    return-object v0
.end method

.method public static decodeFromBitcoin([BZZ)Lorg/bitcoinj/crypto/TransactionSignature;
    .registers 7

    .prologue
    .line 186
    if-eqz p1, :cond_10

    invoke-static {p0}, Lorg/bitcoinj/crypto/TransactionSignature;->isEncodingCanonical([B)Z

    move-result v0

    if-nez v0, :cond_10

    .line 187
    new-instance v0, Lorg/bitcoinj/core/VerificationException;

    const-string v1, "Signature encoding is not canonical."

    invoke-direct {v0, v1}, Lorg/bitcoinj/core/VerificationException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 190
    :cond_10
    :try_start_10
    invoke-static {p0}, Lorg/bitcoinj/core/ECKey$ECDSASignature;->decodeFromDER([B)Lorg/bitcoinj/core/ECKey$ECDSASignature;
    :try_end_13
    .catch Ljava/lang/IllegalArgumentException; {:try_start_10 .. :try_end_13} :catch_24

    move-result-object v0

    .line 194
    if-eqz p2, :cond_2d

    invoke-virtual {v0}, Lorg/bitcoinj/core/ECKey$ECDSASignature;->isCanonical()Z

    move-result v1

    if-nez v1, :cond_2d

    .line 195
    new-instance v0, Lorg/bitcoinj/core/VerificationException;

    const-string v1, "S-value is not canonical."

    invoke-direct {v0, v1}, Lorg/bitcoinj/core/VerificationException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 191
    :catch_24
    move-exception v0

    .line 192
    new-instance v1, Lorg/bitcoinj/core/VerificationException;

    const-string v2, "Could not decode DER"

    invoke-direct {v1, v2, v0}, Lorg/bitcoinj/core/VerificationException;-><init>(Ljava/lang/String;Ljava/lang/Throwable;)V

    throw v1

    .line 199
    :cond_2d
    new-instance v1, Lorg/bitcoinj/crypto/TransactionSignature;

    iget-object v2, v0, Lorg/bitcoinj/core/ECKey$ECDSASignature;->r:Ljava/math/BigInteger;

    iget-object v0, v0, Lorg/bitcoinj/core/ECKey$ECDSASignature;->s:Ljava/math/BigInteger;

    array-length v3, p0

    add-int/lit8 v3, v3, -0x1

    aget-byte v3, p0, v3

    invoke-direct {v1, v2, v0, v3}, Lorg/bitcoinj/crypto/TransactionSignature;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;I)V

    return-object v1
.end method

.method public static dummy()Lorg/bitcoinj/crypto/TransactionSignature;
    .registers 2

    .prologue
    .line 65
    sget-object v0, Lorg/bitcoinj/core/ECKey;->HALF_CURVE_ORDER:Ljava/math/BigInteger;

    .line 66
    new-instance v1, Lorg/bitcoinj/crypto/TransactionSignature;

    invoke-direct {v1, v0, v0}, Lorg/bitcoinj/crypto/TransactionSignature;-><init>(Ljava/math/BigInteger;Ljava/math/BigInteger;)V

    return-object v1
.end method

.method public static isEncodingCanonical([B)Z
    .registers 10

    .prologue
    const/4 v8, 0x4

    const/4 v7, 0x2

    const/16 v6, 0x80

    const/4 v1, 0x1

    const/4 v0, 0x0

    .line 92
    array-length v2, p0

    const/16 v3, 0x9

    if-lt v2, v3, :cond_10

    array-length v2, p0

    const/16 v3, 0x49

    if-le v2, v3, :cond_11

    .line 122
    :cond_10
    :goto_10
    return v0

    .line 95
    :cond_11
    array-length v2, p0

    add-int/lit8 v2, v2, -0x1

    aget-byte v2, p0, v2

    and-int/lit16 v2, v2, 0xff

    sget-object v3, Lorg/bitcoinj/core/Transaction$SigHash;->ANYONECANPAY:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v3, v3, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    xor-int/lit8 v3, v3, -0x1

    and-int/2addr v2, v3

    .line 96
    sget-object v3, Lorg/bitcoinj/core/Transaction$SigHash;->ALL:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v3, v3, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    if-lt v2, v3, :cond_10

    sget-object v3, Lorg/bitcoinj/core/Transaction$SigHash;->SINGLE:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v3, v3, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    if-gt v2, v3, :cond_10

    .line 100
    aget-byte v2, p0, v0

    and-int/lit16 v2, v2, 0xff

    const/16 v3, 0x30

    if-ne v2, v3, :cond_10

    aget-byte v2, p0, v1

    and-int/lit16 v2, v2, 0xff

    array-length v3, p0

    add-int/lit8 v3, v3, -0x3

    if-ne v2, v3, :cond_10

    .line 103
    const/4 v2, 0x3

    aget-byte v2, p0, v2

    and-int/lit16 v2, v2, 0xff

    .line 104
    add-int/lit8 v3, v2, 0x5

    array-length v4, p0

    if-ge v3, v4, :cond_10

    if-eqz v2, :cond_10

    .line 106
    add-int/lit8 v3, v2, 0x5

    aget-byte v3, p0, v3

    and-int/lit16 v3, v3, 0xff

    .line 107
    add-int v4, v2, v3

    add-int/lit8 v4, v4, 0x7

    array-length v5, p0

    if-ne v4, v5, :cond_10

    if-eqz v3, :cond_10

    .line 111
    aget-byte v4, p0, v7

    if-ne v4, v7, :cond_10

    aget-byte v4, p0, v8

    and-int/lit16 v4, v4, 0x80

    if-eq v4, v6, :cond_10

    .line 113
    if-le v2, v1, :cond_6e

    aget-byte v4, p0, v8

    if-nez v4, :cond_6e

    const/4 v4, 0x5

    aget-byte v4, p0, v4

    and-int/lit16 v4, v4, 0x80

    if-ne v4, v6, :cond_10

    .line 117
    :cond_6e
    add-int/lit8 v4, v2, 0x6

    add-int/lit8 v4, v4, -0x2

    aget-byte v4, p0, v4

    if-ne v4, v7, :cond_10

    add-int/lit8 v4, v2, 0x6

    aget-byte v4, p0, v4

    and-int/lit16 v4, v4, 0x80

    if-eq v4, v6, :cond_10

    .line 119
    if-le v3, v1, :cond_90

    add-int/lit8 v3, v2, 0x6

    aget-byte v3, p0, v3

    if-nez v3, :cond_90

    add-int/lit8 v2, v2, 0x6

    add-int/lit8 v2, v2, 0x1

    aget-byte v2, p0, v2

    and-int/lit16 v2, v2, 0x80

    if-ne v2, v6, :cond_10

    :cond_90
    move v0, v1

    .line 122
    goto/16 :goto_10
.end method


# virtual methods
.method public anyoneCanPay()Z
    .registers 3

    .prologue
    .line 126
    iget v0, p0, Lorg/bitcoinj/crypto/TransactionSignature;->sighashFlags:I

    sget-object v1, Lorg/bitcoinj/core/Transaction$SigHash;->ANYONECANPAY:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v1, v1, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    and-int/2addr v0, v1

    if-eqz v0, :cond_b

    const/4 v0, 0x1

    :goto_a
    return v0

    :cond_b
    const/4 v0, 0x0

    goto :goto_a
.end method

.method public encodeToBitcoin()[B
    .registers 3

    .prologue
    .line 146
    :try_start_0
    invoke-virtual {p0}, Lorg/bitcoinj/crypto/TransactionSignature;->derByteStream()Ljava/io/ByteArrayOutputStream;

    move-result-object v0

    .line 147
    iget v1, p0, Lorg/bitcoinj/crypto/TransactionSignature;->sighashFlags:I

    invoke-virtual {v0, v1}, Ljava/io/ByteArrayOutputStream;->write(I)V

    .line 148
    invoke-virtual {v0}, Ljava/io/ByteArrayOutputStream;->toByteArray()[B
    :try_end_c
    .catch Ljava/io/IOException; {:try_start_0 .. :try_end_c} :catch_e

    move-result-object v0

    return-object v0

    .line 149
    :catch_e
    move-exception v0

    .line 150
    new-instance v1, Ljava/lang/RuntimeException;

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

    throw v1
.end method

.method public sigHashMode()Lorg/bitcoinj/core/Transaction$SigHash;
    .registers 3

    .prologue
    .line 130
    iget v0, p0, Lorg/bitcoinj/crypto/TransactionSignature;->sighashFlags:I

    and-int/lit8 v0, v0, 0x1f

    .line 131
    sget-object v1, Lorg/bitcoinj/core/Transaction$SigHash;->NONE:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v1, v1, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    if-ne v0, v1, :cond_d

    .line 132
    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->NONE:Lorg/bitcoinj/core/Transaction$SigHash;

    .line 136
    :goto_c
    return-object v0

    .line 133
    :cond_d
    sget-object v1, Lorg/bitcoinj/core/Transaction$SigHash;->SINGLE:Lorg/bitcoinj/core/Transaction$SigHash;

    iget v1, v1, Lorg/bitcoinj/core/Transaction$SigHash;->value:I

    if-ne v0, v1, :cond_16

    .line 134
    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->SINGLE:Lorg/bitcoinj/core/Transaction$SigHash;

    goto :goto_c

    .line 136
    :cond_16
    sget-object v0, Lorg/bitcoinj/core/Transaction$SigHash;->ALL:Lorg/bitcoinj/core/Transaction$SigHash;

    goto :goto_c
.end method

.method public toCanonicalised()Lorg/bitcoinj/core/ECKey$ECDSASignature;
    .registers 5

    .prologue
    .line 156
    new-instance v0, Lorg/bitcoinj/crypto/TransactionSignature;

    invoke-super {p0}, Lorg/bitcoinj/core/ECKey$ECDSASignature;->toCanonicalised()Lorg/bitcoinj/core/ECKey$ECDSASignature;

    move-result-object v1

    invoke-virtual {p0}, Lorg/bitcoinj/crypto/TransactionSignature;->sigHashMode()Lorg/bitcoinj/core/Transaction$SigHash;

    move-result-object v2

    invoke-virtual {p0}, Lorg/bitcoinj/crypto/TransactionSignature;->anyoneCanPay()Z

    move-result v3

    invoke-direct {v0, v1, v2, v3}, Lorg/bitcoinj/crypto/TransactionSignature;-><init>(Lorg/bitcoinj/core/ECKey$ECDSASignature;Lorg/bitcoinj/core/Transaction$SigHash;Z)V

    return-object v0
.end method