IndexGenerator.smali
.class public Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;
.super Ljava/lang/Object;
.source "IndexGenerator.java"
# instance fields
.field private N:I
.field private buf:Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
.field private c:I
.field private counter:I
.field private hLen:I
.field private hashAlg:Lorg/spongycastle/crypto/Digest;
.field private initialized:Z
.field private minCallsR:I
.field private remLen:I
.field private seed:[B
.field private totLen:I
# direct methods
.method constructor <init>([BLorg/spongycastle/pqc/crypto/ntru/NTRUEncryptionParameters;)V
.registers 5
.prologue
const/4 v1, 0x0
.line 30
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
.line 31
iput-object p1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->seed:[B
.line 32
iget v0, p2, Lorg/spongycastle/pqc/crypto/ntru/NTRUEncryptionParameters;->N:I
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->N:I
.line 33
iget v0, p2, Lorg/spongycastle/pqc/crypto/ntru/NTRUEncryptionParameters;->c:I
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
.line 34
iget v0, p2, Lorg/spongycastle/pqc/crypto/ntru/NTRUEncryptionParameters;->minCallsR:I
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->minCallsR:I
.line 36
iput v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->totLen:I
.line 37
iput v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
.line 38
iput v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
.line 39
iget-object v0, p2, Lorg/spongycastle/pqc/crypto/ntru/NTRUEncryptionParameters;->hashAlg:Lorg/spongycastle/crypto/Digest;
iput-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
.line 41
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
invoke-interface {v0}, Lorg/spongycastle/crypto/Digest;->getDigestSize()I
move-result v0
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
.line 42
iput-boolean v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->initialized:Z
.line 43
return-void
.end method
.method static synthetic access$000([BI)[B
.registers 3
.prologue
.line 9
invoke-static {p0, p1}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->copyOf([BI)[B
move-result-object v0
return-object v0
.end method
.method private appendHash(Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;[B)V
.registers 7
.prologue
const/4 v3, 0x0
.line 101
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
iget-object v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->seed:[B
iget-object v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->seed:[B
array-length v2, v2
invoke-interface {v0, v1, v3, v2}, Lorg/spongycastle/crypto/Digest;->update([BII)V
.line 103
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
invoke-direct {p0, v0, v1}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->putInt(Lorg/spongycastle/crypto/Digest;I)V
.line 105
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
invoke-interface {v0, p2, v3}, Lorg/spongycastle/crypto/Digest;->doFinal([BI)I
.line 107
invoke-virtual {p1, p2}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;->appendBits([B)V
.line 108
return-void
.end method
.method private static copyOf([BI)[B
.registers 5
.prologue
const/4 v2, 0x0
.line 231
new-array v0, p1, [B
.line 233
array-length v1, p0
if-ge p1, v1, :cond_a
:goto_6
invoke-static {p0, v2, v0, v2, p1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 235
return-object v0
.line 233
:cond_a
array-length p1, p0
goto :goto_6
.end method
.method private putInt(Lorg/spongycastle/crypto/Digest;I)V
.registers 4
.prologue
.line 112
shr-int/lit8 v0, p2, 0x18
invoke-interface {p1, v0}, Lorg/spongycastle/crypto/Digest;->update(B)V
.line 113
shr-int/lit8 v0, p2, 0x10
int-to-byte v0, v0
invoke-interface {p1, v0}, Lorg/spongycastle/crypto/Digest;->update(B)V
.line 114
shr-int/lit8 v0, p2, 0x8
int-to-byte v0, v0
invoke-interface {p1, v0}, Lorg/spongycastle/crypto/Digest;->update(B)V
.line 115
int-to-byte v0, p2
invoke-interface {p1, v0}, Lorg/spongycastle/crypto/Digest;->update(B)V
.line 116
return-void
.end method
# virtual methods
.method nextIndex()I
.registers 7
.prologue
const/4 v5, 0x1
.line 50
iget-boolean v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->initialized:Z
if-nez v0, :cond_35
.line 52
new-instance v0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
invoke-direct {v0}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;-><init>()V
iput-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->buf:Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
.line 53
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
invoke-interface {v0}, Lorg/spongycastle/crypto/Digest;->getDigestSize()I
move-result v0
new-array v0, v0, [B
.line 54
:goto_14
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->minCallsR:I
if-ge v1, v2, :cond_26
.line 56
iget-object v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->buf:Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
invoke-direct {p0, v1, v0}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->appendHash(Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;[B)V
.line 57
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
add-int/lit8 v1, v1, 0x1
iput v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
goto :goto_14
.line 59
:cond_26
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->minCallsR:I
shl-int/lit8 v0, v0, 0x3
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
mul-int/2addr v0, v1
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->totLen:I
.line 60
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->totLen:I
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
.line 61
iput-boolean v5, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->initialized:Z
.line 66
:cond_35
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->totLen:I
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
add-int/2addr v0, v1
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->totLen:I
.line 67
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->buf:Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
invoke-virtual {v0, v1}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;->getTrailing(I)Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
move-result-object v1
.line 68
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
if-ge v0, v2, :cond_a7
.line 70
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
sub-int/2addr v0, v2
.line 71
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
iget v3, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
add-int/2addr v3, v0
add-int/lit8 v3, v3, -0x1
iget v4, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
div-int/2addr v3, v4
add-int/2addr v2, v3
.line 72
iget-object v3, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hashAlg:Lorg/spongycastle/crypto/Digest;
invoke-interface {v3}, Lorg/spongycastle/crypto/Digest;->getDigestSize()I
move-result v3
new-array v3, v3, [B
.line 73
:cond_62
:goto_62
iget v4, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
if-ge v4, v2, :cond_7b
.line 75
invoke-direct {p0, v1, v3}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->appendHash(Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;[B)V
.line 76
iget v4, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
add-int/lit8 v4, v4, 0x1
iput v4, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->counter:I
.line 77
iget v4, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
mul-int/lit8 v4, v4, 0x8
if-le v0, v4, :cond_62
.line 79
iget v4, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
mul-int/lit8 v4, v4, 0x8
sub-int/2addr v0, v4
goto :goto_62
.line 82
:cond_7b
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->hLen:I
mul-int/lit8 v2, v2, 0x8
sub-int v0, v2, v0
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
.line 83
new-instance v0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
invoke-direct {v0}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;-><init>()V
iput-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->buf:Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
.line 84
iget-object v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->buf:Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;
invoke-virtual {v0, v3}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;->appendBits([B)V
.line 91
:goto_8f
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
invoke-virtual {v1, v0}, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator$BitString;->getLeadingAsInt(I)I
move-result v0
.line 92
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
shl-int v1, v5, v1
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
shl-int v2, v5, v2
iget v3, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->N:I
rem-int/2addr v2, v3
sub-int/2addr v1, v2
if-ge v0, v1, :cond_35
.line 94
iget v1, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->N:I
rem-int/2addr v0, v1
return v0
.line 88
:cond_a7
iget v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
iget v2, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->c:I
sub-int/2addr v0, v2
iput v0, p0, Lorg/spongycastle/pqc/crypto/ntru/IndexGenerator;->remLen:I
goto :goto_8f
.end method