HDKeyDerivation.smali

.class public final Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;
.super Ljava/lang/Object;
.source "HDKeyDerivation.java"


# static fields
.field private static final RAND_INT:Ljava/math/BigInteger;


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

    .prologue
    .line 37
    invoke-static {}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/aq;->isAndroidRuntime()Z

    move-result v0

    if-eqz v0, :cond_b

    .line 38
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/LinuxSecureRandom;

    invoke-direct {v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/LinuxSecureRandom;-><init>()V

    .line 40
    :cond_b
    new-instance v0, Ljava/math/BigInteger;

    const/16 v1, 0x100

    new-instance v2, Ljava/security/SecureRandom;

    invoke-direct {v2}, Ljava/security/SecureRandom;-><init>()V

    invoke-direct {v0, v1, v2}, Ljava/math/BigInteger;-><init>(ILjava/util/Random;)V

    sput-object v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->RAND_INT:Ljava/math/BigInteger;

    .line 41
    return-void
.end method

.method public static a(Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;I)Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;
    .registers 8

    .prologue
    .line 112
    const/4 v0, 0x0

    .line 113
    new-instance v1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;

    invoke-direct {v1, p1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;-><init>(I)V

    .line 2064
    iget v2, v1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->i:I

    invoke-static {v2}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->hasHardenedBit(I)Z

    move-result v3

    move v2, v0

    .line 115
    :goto_d
    const/16 v0, 0x64

    if-ge v2, v0, :cond_29

    .line 117
    :try_start_11
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;

    .line 2073
    iget v4, v1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->i:I

    const v5, 0x7fffffff

    and-int/2addr v4, v5

    .line 117
    add-int/2addr v4, v2

    invoke-direct {v0, v4, v3}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;-><init>(IZ)V
    :try_end_1d
    .catch Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException; {:try_start_11 .. :try_end_1d} :catch_22

    .line 118
    :try_start_1d
    invoke-static {p0, v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->a(Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;)Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;
    :try_end_20
    .catch Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException; {:try_start_1d .. :try_end_20} :catch_31

    move-result-object v0

    return-object v0

    .line 120
    :catch_22
    move-exception v0

    move-object v0, v1

    :goto_24
    add-int/lit8 v1, v2, 0x1

    move v2, v1

    move-object v1, v0

    goto :goto_d

    .line 122
    :cond_29
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;

    const-string v1, "Maximum number of child derivation attempts reached, this is probably an indication of a bug."

    invoke-direct {v0, v1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 120
    :catch_31
    move-exception v1

    goto :goto_24
.end method

.method public static a(Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;)Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;
    .registers 11

    .prologue
    const/16 v8, 0x40

    const/16 v6, 0x21

    const/16 v7, 0x20

    const/4 v2, 0x0

    const/4 v1, 0x1

    .line 131
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->hasPrivKey()Z

    move-result v0

    if-nez v0, :cond_31

    .line 132
    sget-object v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation$PublicDeriveMode;->NORMAL:Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation$PublicDeriveMode;

    invoke-static {p0, p1, v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->a(Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation$PublicDeriveMode;)Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;

    move-result-object v4

    .line 133
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;

    .line 2186
    iget-object v1, p0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->childNumberPath:Lcom/google/common/collect/ImmutableList;

    .line 134
    invoke-static {v1, p1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/f;->b(Ljava/util/List;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;)Lcom/google/common/collect/ImmutableList;

    move-result-object v1

    iget-object v2, v4, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;->chainCode:[B

    new-instance v3, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/g;

    sget-object v5, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->CURVE:Lorg/spongycastle/crypto/params/ECDomainParameters;

    .line 136
    invoke-virtual {v5}, Lorg/spongycastle/crypto/params/ECDomainParameters;->getCurve()Lorg/spongycastle/math/ec/ECCurve;

    move-result-object v5

    iget-object v4, v4, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;->keyBytes:[B

    invoke-direct {v3, v5, v4}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/g;-><init>(Lorg/spongycastle/math/ec/ECCurve;[B)V

    const/4 v4, 0x0

    move-object v5, p0

    invoke-direct/range {v0 .. v5}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;-><init>(Lcom/google/common/collect/ImmutableList;[BLcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/g;Ljava/math/BigInteger;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;)V

    .line 141
    :goto_30
    return-object v0

    .line 3151
    :cond_31
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->hasPrivKey()Z

    move-result v0

    const-string v3, "Parent key must have private key bytes for this method."

    invoke-static {v0, v3}, Lcom/google/common/base/n;->checkArgument(ZLjava/lang/Object;)V

    .line 3152
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->getPubKeyPoint()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    invoke-virtual {v0, v1}, Lorg/spongycastle/math/ec/ECPoint;->getEncoded(Z)[B

    move-result-object v3

    .line 3153
    array-length v0, v3

    if-ne v0, v6, :cond_de

    move v0, v1

    :goto_46
    new-instance v4, Ljava/lang/StringBuilder;

    const-string v5, "Parent pubkey must be 33 bytes, but is "

    invoke-direct {v4, v5}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

    array-length v5, v3

    invoke-virtual {v4, v5}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    move-result-object v4

    invoke-virtual {v4}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v4

    invoke-static {v0, v4}, Lcom/google/common/base/n;->checkState(ZLjava/lang/Object;)V

    .line 3154
    const/16 v0, 0x25

    invoke-static {v0}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v0

    .line 4064
    iget v4, p1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->i:I

    invoke-static {v4}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->hasHardenedBit(I)Z

    move-result v4

    .line 3155
    if-eqz v4, :cond_e1

    .line 4248
    new-array v3, v6, [B

    .line 5027
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->getPrivKey()Ljava/math/BigInteger;

    move-result-object v4

    invoke-static {v4}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/aq;->c(Ljava/math/BigInteger;)[B

    move-result-object v4

    .line 4250
    array-length v5, v4

    rsub-int/lit8 v5, v5, 0x21

    array-length v6, v4

    invoke-static {v4, v2, v3, v5, v6}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 3156
    invoke-virtual {v0, v3}, Ljava/nio/ByteBuffer;->put([B)Ljava/nio/ByteBuffer;

    .line 5061
    :goto_7b
    iget v3, p1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->i:I

    .line 3160
    invoke-virtual {v0, v3}, Ljava/nio/ByteBuffer;->putInt(I)Ljava/nio/ByteBuffer;

    .line 5214
    iget-object v3, p0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->chainCode:[B

    .line 3161
    invoke-virtual {v0}, Ljava/nio/ByteBuffer;->array()[B

    move-result-object v0

    invoke-static {v3, v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/f;->hmacSha512([B[B)[B

    move-result-object v3

    .line 3162
    array-length v0, v3

    if-ne v0, v8, :cond_e5

    move v0, v1

    :goto_8e
    array-length v4, v3

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

    move-result-object v4

    invoke-static {v0, v4}, Lcom/google/common/base/n;->checkState(ZLjava/lang/Object;)V

    .line 3163
    invoke-static {v3, v2, v7}, Ljava/util/Arrays;->copyOfRange([BII)[B

    move-result-object v0

    .line 3164
    invoke-static {v3, v7, v8}, Ljava/util/Arrays;->copyOfRange([BII)[B

    move-result-object v2

    .line 3165
    new-instance v3, Ljava/math/BigInteger;

    invoke-direct {v3, v1, v0}, Ljava/math/BigInteger;-><init>(I[B)V

    .line 3166
    const-string v0, "Illegal derived key: I_L >= n"

    invoke-static {v3, v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->assertLessThanN(Ljava/math/BigInteger;Ljava/lang/String;)V

    .line 3167
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->getPrivKey()Ljava/math/BigInteger;

    move-result-object v0

    .line 3168
    invoke-virtual {v0, v3}, Ljava/math/BigInteger;->add(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    sget-object v3, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->CURVE:Lorg/spongycastle/crypto/params/ECDomainParameters;

    invoke-virtual {v3}, Lorg/spongycastle/crypto/params/ECDomainParameters;->getN()Ljava/math/BigInteger;

    move-result-object v3

    invoke-virtual {v0, v3}, Ljava/math/BigInteger;->mod(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    .line 3169
    const-string v3, "Illegal derived key: derived private key equals 0."

    invoke-static {v0, v3}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->assertNonZero(Ljava/math/BigInteger;Ljava/lang/String;)V

    .line 3170
    new-instance v3, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;

    invoke-virtual {v0}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object v0

    invoke-direct {v3, v0, v2}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;-><init>([B[B)V

    .line 141
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;

    .line 6186
    iget-object v2, p0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->childNumberPath:Lcom/google/common/collect/ImmutableList;

    .line 142
    invoke-static {v2, p1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/f;->b(Ljava/util/List;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;)Lcom/google/common/collect/ImmutableList;

    move-result-object v2

    iget-object v4, v3, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;->chainCode:[B

    new-instance v5, Ljava/math/BigInteger;

    iget-object v3, v3, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;->keyBytes:[B

    invoke-direct {v5, v1, v3}, Ljava/math/BigInteger;-><init>(I[B)V

    invoke-direct {v0, v2, v4, v5, p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;-><init>(Lcom/google/common/collect/ImmutableList;[BLjava/math/BigInteger;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;)V

    goto/16 :goto_30

    :cond_de
    move v0, v2

    .line 3153
    goto/16 :goto_46

    .line 3158
    :cond_e1
    invoke-virtual {v0, v3}, Ljava/nio/ByteBuffer;->put([B)Ljava/nio/ByteBuffer;

    goto :goto_7b

    :cond_e5
    move v0, v2

    .line 3162
    goto :goto_8e
.end method

.method public static a(Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation$PublicDeriveMode;)Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;
    .registers 11

    .prologue
    const/16 v7, 0x40

    const/16 v6, 0x20

    const/4 v2, 0x0

    const/4 v1, 0x1

    .line 179
    .line 7064
    iget v0, p1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->i:I

    invoke-static {v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->hasHardenedBit(I)Z

    move-result v0

    .line 179
    if-nez v0, :cond_82

    move v0, v1

    :goto_f
    const-string v3, "Can\'t use private derivation with public keys only."

    invoke-static {v0, v3}, Lcom/google/common/base/n;->checkArgument(ZLjava/lang/Object;)V

    .line 180
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->getPubKeyPoint()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    invoke-virtual {v0, v1}, Lorg/spongycastle/math/ec/ECPoint;->getEncoded(Z)[B

    move-result-object v3

    .line 181
    array-length v0, v3

    const/16 v4, 0x21

    if-ne v0, v4, :cond_84

    move v0, v1

    :goto_22
    new-instance v4, Ljava/lang/StringBuilder;

    const-string v5, "Parent pubkey must be 33 bytes, but is "

    invoke-direct {v4, v5}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

    array-length v5, v3

    invoke-virtual {v4, v5}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    move-result-object v4

    invoke-virtual {v4}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v4

    invoke-static {v0, v4}, Lcom/google/common/base/n;->checkState(ZLjava/lang/Object;)V

    .line 182
    const/16 v0, 0x25

    invoke-static {v0}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;

    move-result-object v0

    .line 183
    invoke-virtual {v0, v3}, Ljava/nio/ByteBuffer;->put([B)Ljava/nio/ByteBuffer;

    .line 8061
    iget v3, p1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/a;->i:I

    .line 184
    invoke-virtual {v0, v3}, Ljava/nio/ByteBuffer;->putInt(I)Ljava/nio/ByteBuffer;

    .line 8214
    iget-object v3, p0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->chainCode:[B

    .line 185
    invoke-virtual {v0}, Ljava/nio/ByteBuffer;->array()[B

    move-result-object v0

    invoke-static {v3, v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/f;->hmacSha512([B[B)[B

    move-result-object v3

    .line 186
    array-length v0, v3

    if-ne v0, v7, :cond_86

    move v0, v1

    :goto_51
    array-length v4, v3

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

    move-result-object v4

    invoke-static {v0, v4}, Lcom/google/common/base/n;->checkState(ZLjava/lang/Object;)V

    .line 187
    invoke-static {v3, v2, v6}, Ljava/util/Arrays;->copyOfRange([BII)[B

    move-result-object v0

    .line 188
    invoke-static {v3, v6, v7}, Ljava/util/Arrays;->copyOfRange([BII)[B

    move-result-object v2

    .line 189
    new-instance v3, Ljava/math/BigInteger;

    invoke-direct {v3, v1, v0}, Ljava/math/BigInteger;-><init>(I[B)V

    .line 190
    const-string v0, "Illegal derived key: I_L >= n"

    invoke-static {v3, v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->assertLessThanN(Ljava/math/BigInteger;Ljava/lang/String;)V

    .line 192
    sget-object v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->CURVE:Lorg/spongycastle/crypto/params/ECDomainParameters;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/ECDomainParameters;->getN()Ljava/math/BigInteger;

    move-result-object v0

    .line 194
    sget-object v4, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation$1;->Qx:[I

    invoke-virtual {p2}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation$PublicDeriveMode;->ordinal()I

    move-result v5

    aget v4, v4, v5

    packed-switch v4, :pswitch_data_e0

    .line 208
    new-instance v0, Ljava/lang/AssertionError;

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

    throw v0

    :cond_82
    move v0, v2

    .line 179
    goto :goto_f

    :cond_84
    move v0, v2

    .line 181
    goto :goto_22

    :cond_86
    move v0, v2

    .line 186
    goto :goto_51

    .line 196
    :pswitch_88
    invoke-static {v3}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->publicPointFromPrivate(Ljava/math/BigInteger;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->getPubKeyPoint()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    invoke-virtual {v0, v3}, Lorg/spongycastle/math/ec/ECPoint;->add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    .line 211
    :goto_94
    const-string v3, "Illegal derived key: derived public key equals infinity."

    .line 8221
    sget-object v4, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->CURVE:Lorg/spongycastle/crypto/params/ECDomainParameters;

    invoke-virtual {v4}, Lorg/spongycastle/crypto/params/ECDomainParameters;->getCurve()Lorg/spongycastle/math/ec/ECCurve;

    move-result-object v4

    invoke-virtual {v4}, Lorg/spongycastle/math/ec/ECCurve;->getInfinity()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v4

    invoke-virtual {v0, v4}, Lorg/spongycastle/math/ec/ECPoint;->equals(Lorg/spongycastle/math/ec/ECPoint;)Z

    move-result v4

    if-eqz v4, :cond_d5

    .line 8222
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;

    invoke-direct {v0, v3}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 203
    :pswitch_ac
    sget-object v4, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->RAND_INT:Ljava/math/BigInteger;

    invoke-virtual {v3, v4}, Ljava/math/BigInteger;->add(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v3

    invoke-virtual {v3, v0}, Ljava/math/BigInteger;->mod(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v3

    invoke-static {v3}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->publicPointFromPrivate(Ljava/math/BigInteger;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    .line 204
    sget-object v4, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->RAND_INT:Ljava/math/BigInteger;

    invoke-virtual {v4}, Ljava/math/BigInteger;->negate()Ljava/math/BigInteger;

    move-result-object v4

    invoke-virtual {v4, v0}, Ljava/math/BigInteger;->mod(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    .line 205
    invoke-static {v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->publicPointFromPrivate(Ljava/math/BigInteger;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    invoke-virtual {v3, v0}, Lorg/spongycastle/math/ec/ECPoint;->add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    .line 206
    invoke-virtual {p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->getPubKeyPoint()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    invoke-virtual {v0, v3}, Lorg/spongycastle/math/ec/ECPoint;->add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    goto :goto_94

    .line 212
    :cond_d5
    new-instance v3, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;

    invoke-virtual {v0, v1}, Lorg/spongycastle/math/ec/ECPoint;->getEncoded(Z)[B

    move-result-object v0

    invoke-direct {v3, v0, v2}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/e;-><init>([B[B)V

    return-object v3

    .line 194
    nop

    :pswitch_data_e0
    .packed-switch 0x1
        :pswitch_88
        :pswitch_ac
    .end packed-switch
.end method

.method private static assertLessThanN(Ljava/math/BigInteger;Ljava/lang/String;)V
    .registers 3

    .prologue
    .line 226
    sget-object v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/ECKey;->CURVE:Lorg/spongycastle/crypto/params/ECDomainParameters;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/ECDomainParameters;->getN()Ljava/math/BigInteger;

    move-result-object v0

    invoke-virtual {p0, v0}, Ljava/math/BigInteger;->compareTo(Ljava/math/BigInteger;)I

    move-result v0

    if-lez v0, :cond_12

    .line 227
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;

    invoke-direct {v0, p1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 228
    :cond_12
    return-void
.end method

.method private static assertNonZero(Ljava/math/BigInteger;Ljava/lang/String;)V
    .registers 3

    .prologue
    .line 216
    sget-object v0, Ljava/math/BigInteger;->ZERO:Ljava/math/BigInteger;

    invoke-virtual {p0, v0}, Ljava/math/BigInteger;->equals(Ljava/lang/Object;)Z

    move-result v0

    if-eqz v0, :cond_e

    .line 217
    new-instance v0, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;

    invoke-direct {v0, p1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDDerivationException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 218
    :cond_e
    return-void
.end method

.method public static k([B)Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;
    .registers 8

    .prologue
    const/16 v5, 0x40

    const/16 v4, 0x20

    const/4 v1, 0x1

    const/4 v2, 0x0

    .line 64
    array-length v0, p0

    const/16 v3, 0x8

    if-le v0, v3, :cond_58

    move v0, v1

    :goto_c
    const-string v3, "Seed is too short and could be brute forced"

    invoke-static {v0, v3}, Lcom/google/common/base/n;->checkArgument(ZLjava/lang/Object;)V

    .line 66
    const-string v0, "Bitcoin seed"

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

    move-result-object v0

    invoke-static {v0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/f;->createHmacSha512Digest([B)Lorg/spongycastle/crypto/macs/HMac;

    move-result-object v0

    invoke-static {v0, p0}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/f;->hmacSha512(Lorg/spongycastle/crypto/macs/HMac;[B)[B

    move-result-object v0

    .line 69
    invoke-static {v5}, Ljava/lang/Integer;->valueOf(I)Ljava/lang/Integer;

    move-result-object v3

    invoke-static {v1, v3}, Lcom/google/common/base/n;->checkState(ZLjava/lang/Object;)V

    .line 70
    invoke-static {v0, v2, v4}, Ljava/util/Arrays;->copyOfRange([BII)[B

    move-result-object v3

    .line 71
    invoke-static {v0, v4, v5}, Ljava/util/Arrays;->copyOfRange([BII)[B

    move-result-object v4

    .line 72
    invoke-static {v0, v2}, Ljava/util/Arrays;->fill([BB)V

    .line 1085
    new-instance v0, Ljava/math/BigInteger;

    invoke-direct {v0, v1, v3}, Ljava/math/BigInteger;-><init>(I[B)V

    .line 1086
    const-string v1, "Generated master key is invalid."

    invoke-static {v0, v1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->assertNonZero(Ljava/math/BigInteger;Ljava/lang/String;)V

    .line 1087
    const-string v1, "Generated master key is invalid."

    invoke-static {v0, v1}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/HDKeyDerivation;->assertLessThanN(Ljava/math/BigInteger;Ljava/lang/String;)V

    .line 1088
    new-instance v1, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;

    invoke-static {}, Lcom/google/common/collect/ImmutableList;->of()Lcom/google/common/collect/ImmutableList;

    move-result-object v5

    const/4 v6, 0x0

    invoke-direct {v1, v5, v4, v0, v6}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;-><init>(Lcom/google/common/collect/ImmutableList;[BLjava/math/BigInteger;Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;)V

    .line 74
    invoke-static {v3, v2}, Ljava/util/Arrays;->fill([BB)V

    .line 75
    invoke-static {v4, v2}, Ljava/util/Arrays;->fill([BB)V

    .line 77
    invoke-static {}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/core/aq;->currentTimeSeconds()J

    move-result-wide v2

    invoke-virtual {v1, v2, v3}, Lcom/cmcm/safewallet/data/coinprovider/bch/bitcoinj/crypto/c;->setCreationTimeSeconds(J)V

    .line 78
    return-object v1

    :cond_58
    move v0, v2

    .line 64
    goto :goto_c
.end method