SCrypt.smali
.class public Lorg/spongycastle/crypto/generators/SCrypt;
.super Ljava/lang/Object;
.source "SCrypt.java"
# direct methods
.method public constructor <init>()V
.registers 1
.prologue
.line 17
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
return-void
.end method
.method private static BlockMix([I[I[I[II)V
.registers 12
.prologue
const/16 v6, 0x10
const/4 v1, 0x0
.line 149
array-length v0, p0
add-int/lit8 v0, v0, -0x10
invoke-static {p0, v0, p1, v1, v6}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 151
array-length v0, p0
ushr-int/lit8 v4, v0, 0x1
.line 153
mul-int/lit8 v0, p4, 0x2
move v2, v1
move v3, v0
move v0, v1
:goto_11
if-lez v3, :cond_27
.line 155
invoke-static {p1, p0, v2, p2}, Lorg/spongycastle/crypto/generators/SCrypt;->Xor([I[II[I)V
.line 157
const/16 v5, 0x8
invoke-static {v5, p2, p1}, Lorg/spongycastle/crypto/engines/Salsa20Engine;->salsaCore(I[I[I)V
.line 158
invoke-static {p1, v1, p3, v0, v6}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 160
add-int v5, v4, v2
sub-int v0, v5, v0
.line 161
add-int/lit8 v2, v2, 0x10
.line 153
add-int/lit8 v3, v3, -0x1
goto :goto_11
.line 164
:cond_27
array-length v0, p3
invoke-static {p3, v1, p0, v1, v0}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 165
return-void
.end method
.method private static Clear([B)V
.registers 2
.prologue
.line 177
if-eqz p0, :cond_6
.line 179
const/4 v0, 0x0
invoke-static {p0, v0}, Lorg/spongycastle/util/Arrays;->fill([BB)V
.line 181
:cond_6
return-void
.end method
.method private static Clear([I)V
.registers 2
.prologue
.line 185
if-eqz p0, :cond_6
.line 187
const/4 v0, 0x0
invoke-static {p0, v0}, Lorg/spongycastle/util/Arrays;->fill([II)V
.line 189
:cond_6
return-void
.end method
.method private static ClearAll([[I)V
.registers 3
.prologue
.line 193
const/4 v0, 0x0
:goto_1
array-length v1, p0
if-ge v0, v1, :cond_c
.line 195
aget-object v1, p0, v0
invoke-static {v1}, Lorg/spongycastle/crypto/generators/SCrypt;->Clear([I)V
.line 193
add-int/lit8 v0, v0, 0x1
goto :goto_1
.line 197
:cond_c
return-void
.end method
.method private static MFcrypt([B[BIIII)[B
.registers 12
.prologue
const/4 v0, 0x0
.line 71
shl-int/lit8 v2, p3, 0x7
.line 72
mul-int v1, p4, v2
invoke-static {p0, p1, v1}, Lorg/spongycastle/crypto/generators/SCrypt;->SingleIterationPBKDF2([B[BI)[B
move-result-object v3
.line 74
const/4 v1, 0x0
.line 78
:try_start_a
array-length v4, v3
ushr-int/lit8 v4, v4, 0x2
.line 79
new-array v1, v4, [I
.line 81
const/4 v5, 0x0
invoke-static {v3, v5, v1}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI[I)V
.line 83
ushr-int/lit8 v2, v2, 0x2
.line 84
:goto_15
if-ge v0, v4, :cond_1c
.line 87
invoke-static {v1, v0, p2, p3}, Lorg/spongycastle/crypto/generators/SCrypt;->SMix([IIII)V
.line 84
add-int/2addr v0, v2
goto :goto_15
.line 90
:cond_1c
const/4 v0, 0x0
invoke-static {v1, v3, v0}, Lorg/spongycastle/util/Pack;->intToLittleEndian([I[BI)V
.line 92
invoke-static {p0, v3, p5}, Lorg/spongycastle/crypto/generators/SCrypt;->SingleIterationPBKDF2([B[BI)[B
:try_end_23
.catchall {:try_start_a .. :try_end_23} :catchall_2b
move-result-object v0
.line 96
invoke-static {v3}, Lorg/spongycastle/crypto/generators/SCrypt;->Clear([B)V
.line 97
invoke-static {v1}, Lorg/spongycastle/crypto/generators/SCrypt;->Clear([I)V
return-object v0
.line 96
:catchall_2b
move-exception v0
invoke-static {v3}, Lorg/spongycastle/crypto/generators/SCrypt;->Clear([B)V
.line 97
invoke-static {v1}, Lorg/spongycastle/crypto/generators/SCrypt;->Clear([I)V
throw v0
.end method
.method private static SMix([IIII)V
.registers 14
.prologue
.line 111
shl-int/lit8 v1, p3, 0x5
.line 113
const/16 v0, 0x10
new-array v2, v0, [I
.line 114
const/16 v0, 0x10
new-array v3, v0, [I
.line 115
new-array v4, v1, [I
.line 117
new-array v5, v1, [I
.line 118
new-array v6, p2, [[I
.line 122
const/4 v0, 0x0
:try_start_11
invoke-static {p0, p1, v5, v0, v1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
.line 124
const/4 v0, 0x0
:goto_15
if-ge v0, p2, :cond_23
.line 126
invoke-static {v5}, Lorg/spongycastle/util/Arrays;->clone([I)[I
move-result-object v7
aput-object v7, v6, v0
.line 127
invoke-static {v5, v2, v3, v4, p3}, Lorg/spongycastle/crypto/generators/SCrypt;->BlockMix([I[I[I[II)V
.line 124
add-int/lit8 v0, v0, 0x1
goto :goto_15
.line 130
:cond_23
add-int/lit8 v7, p2, -0x1
.line 131
const/4 v0, 0x0
:goto_26
if-ge v0, p2, :cond_39
.line 133
add-int/lit8 v8, v1, -0x10
aget v8, v5, v8
and-int/2addr v8, v7
.line 134
aget-object v8, v6, v8
const/4 v9, 0x0
invoke-static {v5, v8, v9, v5}, Lorg/spongycastle/crypto/generators/SCrypt;->Xor([I[II[I)V
.line 135
invoke-static {v5, v2, v3, v4, p3}, Lorg/spongycastle/crypto/generators/SCrypt;->BlockMix([I[I[I[II)V
.line 131
add-int/lit8 v0, v0, 0x1
goto :goto_26
.line 138
:cond_39
const/4 v0, 0x0
invoke-static {v5, v0, p0, p1, v1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
:try_end_3d
.catchall {:try_start_11 .. :try_end_3d} :catchall_53
.line 142
invoke-static {v6}, Lorg/spongycastle/crypto/generators/SCrypt;->ClearAll([[I)V
.line 143
const/4 v0, 0x4
new-array v0, v0, [[I
const/4 v1, 0x0
aput-object v5, v0, v1
const/4 v1, 0x1
aput-object v2, v0, v1
const/4 v1, 0x2
aput-object v3, v0, v1
const/4 v1, 0x3
aput-object v4, v0, v1
invoke-static {v0}, Lorg/spongycastle/crypto/generators/SCrypt;->ClearAll([[I)V
.line 144
return-void
.line 142
:catchall_53
move-exception v0
invoke-static {v6}, Lorg/spongycastle/crypto/generators/SCrypt;->ClearAll([[I)V
.line 143
const/4 v1, 0x4
new-array v1, v1, [[I
const/4 v6, 0x0
aput-object v5, v1, v6
const/4 v5, 0x1
aput-object v2, v1, v5
const/4 v2, 0x2
aput-object v3, v1, v2
const/4 v2, 0x3
aput-object v4, v1, v2
invoke-static {v1}, Lorg/spongycastle/crypto/generators/SCrypt;->ClearAll([[I)V
throw v0
.end method
.method private static SingleIterationPBKDF2([B[BI)[B
.registers 5
.prologue
.line 103
new-instance v0, Lorg/spongycastle/crypto/generators/PKCS5S2ParametersGenerator;
new-instance v1, Lorg/spongycastle/crypto/digests/SHA256Digest;
invoke-direct {v1}, Lorg/spongycastle/crypto/digests/SHA256Digest;-><init>()V
invoke-direct {v0, v1}, Lorg/spongycastle/crypto/generators/PKCS5S2ParametersGenerator;-><init>(Lorg/spongycastle/crypto/Digest;)V
.line 104
const/4 v1, 0x1
invoke-virtual {v0, p0, p1, v1}, Lorg/spongycastle/crypto/PBEParametersGenerator;->init([B[BI)V
.line 105
shl-int/lit8 v1, p2, 0x3
invoke-virtual {v0, v1}, Lorg/spongycastle/crypto/PBEParametersGenerator;->generateDerivedMacParameters(I)Lorg/spongycastle/crypto/CipherParameters;
move-result-object v0
check-cast v0, Lorg/spongycastle/crypto/params/KeyParameter;
.line 106
invoke-virtual {v0}, Lorg/spongycastle/crypto/params/KeyParameter;->getKey()[B
move-result-object v0
return-object v0
.end method
.method private static Xor([I[II[I)V
.registers 7
.prologue
.line 169
array-length v0, p3
add-int/lit8 v0, v0, -0x1
:goto_3
if-ltz v0, :cond_11
.line 171
aget v1, p0, v0
add-int v2, p2, v0
aget v2, p1, v2
xor-int/2addr v1, v2
aput v1, p3, v0
.line 169
add-int/lit8 v0, v0, -0x1
goto :goto_3
.line 173
:cond_11
return-void
.end method
.method public static generate([B[BIIII)[B
.registers 10
.prologue
const/4 v0, 0x1
.line 35
if-nez p0, :cond_b
.line 37
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Passphrase P must be provided."
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
.line 39
:cond_b
if-nez p1, :cond_15
.line 41
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Salt S must be provided."
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
.line 43
:cond_15
if-gt p2, v0, :cond_1f
.line 45
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Cost parameter N must be > 1."
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
.line 48
:cond_1f
if-ne p3, v0, :cond_2d
const/high16 v0, 0x10000
if-le p2, v0, :cond_2d
.line 50
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Cost parameter N must be > 1 and < 65536."
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
.line 52
:cond_2d
if-gtz p3, :cond_37
.line 54
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Block size r must be >= 1."
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
.line 56
:cond_37
const v0, 0x7fffffff
shl-int/lit8 v1, p3, 0x7
shl-int/lit8 v1, v1, 0x3
div-int/2addr v0, v1
.line 57
if-lez p4, :cond_43
if-le p4, v0, :cond_68
.line 59
:cond_43
new-instance v1, Ljava/lang/IllegalArgumentException;
new-instance v2, Ljava/lang/StringBuilder;
const-string v3, "Parallelisation parameter p must be >= 1 and <= "
invoke-direct {v2, v3}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V
invoke-virtual {v2, v0}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;
move-result-object v0
const-string v2, " (based on block size r of "
invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
move-result-object v0
invoke-virtual {v0, p3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;
move-result-object v0
const-string v2, ")"
invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
move-result-object v0
invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;
move-result-object v0
invoke-direct {v1, v0}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v1
.line 62
:cond_68
if-gtz p5, :cond_72
.line 64
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Generated key length dkLen must be >= 1."
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
.line 66
:cond_72
invoke-static/range {p0 .. p5}, Lorg/spongycastle/crypto/generators/SCrypt;->MFcrypt([B[BIIII)[B
move-result-object v0
return-object v0
.end method