GCMUtil.smali

.class public abstract Lorg/spongycastle/crypto/modes/gcm/GCMUtil;
.super Ljava/lang/Object;
.source "GCMUtil.java"


# static fields
.field private static final E1:I = -0x1f000000

.field private static final E1L:J = -0x1f00000000000000L

.field private static final LOOKUP:[I


# direct methods
.method static constructor <clinit>()V
    .registers 1

    .prologue
    .line 30
    invoke-static {}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->generateLookup()[I

    move-result-object v0

    sput-object v0, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->LOOKUP:[I

    return-void
.end method

.method public constructor <init>()V
    .registers 1

    .prologue
    .line 5
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static asBytes([I[B)V
    .registers 3

    .prologue
    .line 62
    const/4 v0, 0x0

    invoke-static {p0, p1, v0}, Lorg/spongycastle/util/Pack;->intToBigEndian([I[BI)V

    .line 63
    return-void
.end method

.method public static asBytes([J[B)V
    .registers 3

    .prologue
    .line 74
    const/4 v0, 0x0

    invoke-static {p0, p1, v0}, Lorg/spongycastle/util/Pack;->longToBigEndian([J[BI)V

    .line 75
    return-void
.end method

.method public static asBytes([I)[B
    .registers 3

    .prologue
    .line 55
    const/16 v0, 0x10

    new-array v0, v0, [B

    .line 56
    const/4 v1, 0x0

    invoke-static {p0, v0, v1}, Lorg/spongycastle/util/Pack;->intToBigEndian([I[BI)V

    .line 57
    return-object v0
.end method

.method public static asBytes([J)[B
    .registers 3

    .prologue
    .line 67
    const/16 v0, 0x10

    new-array v0, v0, [B

    .line 68
    const/4 v1, 0x0

    invoke-static {p0, v0, v1}, Lorg/spongycastle/util/Pack;->longToBigEndian([J[BI)V

    .line 69
    return-object v0
.end method

.method public static asInts([B[I)V
    .registers 3

    .prologue
    .line 86
    const/4 v0, 0x0

    invoke-static {p0, v0, p1}, Lorg/spongycastle/util/Pack;->bigEndianToInt([BI[I)V

    .line 87
    return-void
.end method

.method public static asInts([B)[I
    .registers 3

    .prologue
    .line 79
    const/4 v0, 0x4

    new-array v0, v0, [I

    .line 80
    const/4 v1, 0x0

    invoke-static {p0, v1, v0}, Lorg/spongycastle/util/Pack;->bigEndianToInt([BI[I)V

    .line 81
    return-object v0
.end method

.method public static asLongs([B[J)V
    .registers 3

    .prologue
    .line 98
    const/4 v0, 0x0

    invoke-static {p0, v0, p1}, Lorg/spongycastle/util/Pack;->bigEndianToLong([BI[J)V

    .line 99
    return-void
.end method

.method public static asLongs([B)[J
    .registers 3

    .prologue
    .line 91
    const/4 v0, 0x2

    new-array v0, v0, [J

    .line 92
    const/4 v1, 0x0

    invoke-static {p0, v1, v0}, Lorg/spongycastle/util/Pack;->bigEndianToLong([BI[J)V

    .line 93
    return-object v0
.end method

.method private static generateLookup()[I
    .registers 8

    .prologue
    const/16 v7, 0x100

    const/4 v2, 0x0

    .line 12
    new-array v4, v7, [I

    move v3, v2

    .line 14
    :goto_6
    if-ge v3, v7, :cond_21

    .line 17
    const/4 v0, 0x7

    move v1, v0

    move v0, v2

    :goto_b
    if-ltz v1, :cond_1b

    .line 19
    const/4 v5, 0x1

    shl-int/2addr v5, v1

    and-int/2addr v5, v3

    if-eqz v5, :cond_18

    .line 21
    const/high16 v5, -0x1f000000

    rsub-int/lit8 v6, v1, 0x7

    ushr-int/2addr v5, v6

    xor-int/2addr v0, v5

    .line 17
    :cond_18
    add-int/lit8 v1, v1, -0x1

    goto :goto_b

    .line 24
    :cond_1b
    aput v0, v4, v3

    .line 14
    add-int/lit8 v0, v3, 0x1

    move v3, v0

    goto :goto_6

    .line 27
    :cond_21
    return-object v4
.end method

.method public static multiply([B[B)V
    .registers 4

    .prologue
    .line 103
    invoke-static {p0}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->asInts([B)[I

    move-result-object v0

    .line 104
    invoke-static {p1}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->asInts([B)[I

    move-result-object v1

    .line 105
    invoke-static {v0, v1}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->multiply([I[I)V

    .line 106
    invoke-static {v0, p0}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->asBytes([I[B)V

    .line 107
    return-void
.end method

.method public static multiply([I[I)V
    .registers 15

    .prologue
    .line 111
    const/4 v0, 0x0

    aget v9, p0, v0

    const/4 v0, 0x1

    aget v8, p0, v0

    const/4 v0, 0x2

    aget v7, p0, v0

    const/4 v0, 0x3

    aget v6, p0, v0

    .line 112
    const/4 v5, 0x0

    const/4 v4, 0x0

    const/4 v3, 0x0

    const/4 v2, 0x0

    .line 114
    const/4 v0, 0x0

    move v10, v0

    :goto_12
    const/4 v0, 0x4

    if-ge v10, v0, :cond_4b

    .line 116
    aget v1, p1, v10

    .line 117
    const/4 v0, 0x0

    :goto_18
    const/16 v11, 0x20

    if-ge v0, v11, :cond_47

    .line 119
    shr-int/lit8 v11, v1, 0x1f

    shl-int/lit8 v1, v1, 0x1

    .line 120
    and-int v12, v9, v11

    xor-int/2addr v5, v12

    .line 121
    and-int v12, v8, v11

    xor-int/2addr v4, v12

    .line 122
    and-int v12, v7, v11

    xor-int/2addr v3, v12

    .line 123
    and-int/2addr v11, v6

    xor-int/2addr v2, v11

    .line 125
    shl-int/lit8 v11, v6, 0x1f

    shr-int/lit8 v11, v11, 0x8

    .line 126
    ushr-int/lit8 v6, v6, 0x1

    shl-int/lit8 v12, v7, 0x1f

    or-int/2addr v6, v12

    .line 127
    ushr-int/lit8 v7, v7, 0x1

    shl-int/lit8 v12, v8, 0x1f

    or-int/2addr v7, v12

    .line 128
    ushr-int/lit8 v8, v8, 0x1

    shl-int/lit8 v12, v9, 0x1f

    or-int/2addr v8, v12

    .line 129
    ushr-int/lit8 v9, v9, 0x1

    const/high16 v12, -0x1f000000

    and-int/2addr v11, v12

    xor-int/2addr v9, v11

    .line 117
    add-int/lit8 v0, v0, 0x1

    goto :goto_18

    .line 114
    :cond_47
    add-int/lit8 v0, v10, 0x1

    move v10, v0

    goto :goto_12

    .line 133
    :cond_4b
    const/4 v0, 0x0

    aput v5, p0, v0

    .line 134
    const/4 v0, 0x1

    aput v4, p0, v0

    .line 135
    const/4 v0, 0x2

    aput v3, p0, v0

    .line 136
    const/4 v0, 0x3

    aput v2, p0, v0

    .line 137
    return-void
.end method

.method public static multiply([J[J)V
    .registers 18

    .prologue
    .line 141
    const/4 v0, 0x0

    aget-wide v10, p0, v0

    const/4 v0, 0x1

    aget-wide v8, p0, v0

    const-wide/16 v6, 0x0

    const-wide/16 v4, 0x0

    .line 143
    const/4 v0, 0x0

    move v1, v0

    :goto_c
    const/4 v0, 0x2

    if-ge v1, v0, :cond_3c

    .line 145
    aget-wide v2, p1, v1

    .line 146
    const/4 v0, 0x0

    :goto_12
    const/16 v12, 0x40

    if-ge v0, v12, :cond_38

    .line 148
    const/16 v12, 0x3f

    shr-long v12, v2, v12

    const/4 v14, 0x1

    shl-long/2addr v2, v14

    .line 149
    and-long v14, v10, v12

    xor-long/2addr v6, v14

    .line 150
    and-long/2addr v12, v8

    xor-long/2addr v4, v12

    .line 152
    const/16 v12, 0x3f

    shl-long v12, v8, v12

    const/16 v14, 0x8

    shr-long/2addr v12, v14

    .line 153
    const/4 v14, 0x1

    ushr-long/2addr v8, v14

    const/16 v14, 0x3f

    shl-long v14, v10, v14

    or-long/2addr v8, v14

    .line 154
    const/4 v14, 0x1

    ushr-long/2addr v10, v14

    const-wide/high16 v14, -0x1f00000000000000L    # -1.757388200993436E159

    and-long/2addr v12, v14

    xor-long/2addr v10, v12

    .line 146
    add-int/lit8 v0, v0, 0x1

    goto :goto_12

    .line 143
    :cond_38
    add-int/lit8 v0, v1, 0x1

    move v1, v0

    goto :goto_c

    .line 158
    :cond_3c
    const/4 v0, 0x0

    aput-wide v6, p0, v0

    .line 159
    const/4 v0, 0x1

    aput-wide v4, p0, v0

    .line 160
    return-void
.end method

.method public static multiplyP([I)V
    .registers 5

    .prologue
    .line 165
    invoke-static {p0}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->shiftRight([I)I

    move-result v0

    shr-int/lit8 v0, v0, 0x8

    .line 166
    const/4 v1, 0x0

    aget v2, p0, v1

    const/high16 v3, -0x1f000000

    and-int/2addr v0, v3

    xor-int/2addr v0, v2

    aput v0, p0, v1

    .line 167
    return-void
.end method

.method public static multiplyP([I[I)V
    .registers 6

    .prologue
    .line 171
    invoke-static {p0, p1}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->shiftRight([I[I)I

    move-result v0

    shr-int/lit8 v0, v0, 0x8

    .line 172
    const/4 v1, 0x0

    aget v2, p1, v1

    const/high16 v3, -0x1f000000

    and-int/2addr v0, v3

    xor-int/2addr v0, v2

    aput v0, p1, v1

    .line 173
    return-void
.end method

.method public static multiplyP8([I)V
    .registers 5

    .prologue
    .line 183
    const/16 v0, 0x8

    invoke-static {p0, v0}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->shiftRightN([II)I

    move-result v0

    .line 184
    const/4 v1, 0x0

    aget v2, p0, v1

    sget-object v3, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->LOOKUP:[I

    ushr-int/lit8 v0, v0, 0x18

    aget v0, v3, v0

    xor-int/2addr v0, v2

    aput v0, p0, v1

    .line 185
    return-void
.end method

.method public static multiplyP8([I[I)V
    .registers 6

    .prologue
    .line 189
    const/16 v0, 0x8

    invoke-static {p0, v0, p1}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->shiftRightN([II[I)I

    move-result v0

    .line 190
    const/4 v1, 0x0

    aget v2, p1, v1

    sget-object v3, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->LOOKUP:[I

    ushr-int/lit8 v0, v0, 0x18

    aget v0, v3, v0

    xor-int/2addr v0, v2

    aput v0, p1, v1

    .line 191
    return-void
.end method

.method public static oneAsBytes()[B
    .registers 3

    .prologue
    .line 34
    const/16 v0, 0x10

    new-array v0, v0, [B

    .line 35
    const/4 v1, 0x0

    const/16 v2, -0x80

    aput-byte v2, v0, v1

    .line 36
    return-object v0
.end method

.method public static oneAsInts()[I
    .registers 3

    .prologue
    .line 41
    const/4 v0, 0x4

    new-array v0, v0, [I

    .line 42
    const/4 v1, 0x0

    const/high16 v2, -0x80000000

    aput v2, v0, v1

    .line 43
    return-object v0
.end method

.method public static oneAsLongs()[J
    .registers 4

    .prologue
    .line 48
    const/4 v0, 0x2

    new-array v0, v0, [J

    .line 49
    const/4 v1, 0x0

    const-wide/high16 v2, -0x8000000000000000L

    aput-wide v2, v0, v1

    .line 50
    return-object v0
.end method

.method static shiftRight([I)I
    .registers 7

    .prologue
    const/4 v5, 0x3

    const/4 v4, 0x2

    const/4 v3, 0x1

    const/4 v2, 0x0

    .line 204
    aget v0, p0, v2

    .line 205
    ushr-int/lit8 v1, v0, 0x1

    aput v1, p0, v2

    .line 206
    shl-int/lit8 v0, v0, 0x1f

    .line 207
    aget v1, p0, v3

    .line 208
    ushr-int/lit8 v2, v1, 0x1

    or-int/2addr v0, v2

    aput v0, p0, v3

    .line 209
    shl-int/lit8 v0, v1, 0x1f

    .line 210
    aget v1, p0, v4

    .line 211
    ushr-int/lit8 v2, v1, 0x1

    or-int/2addr v0, v2

    aput v0, p0, v4

    .line 212
    shl-int/lit8 v0, v1, 0x1f

    .line 213
    aget v1, p0, v5

    .line 214
    ushr-int/lit8 v2, v1, 0x1

    or-int/2addr v0, v2

    aput v0, p0, v5

    .line 215
    shl-int/lit8 v0, v1, 0x1f

    return v0
.end method

.method static shiftRight([I[I)I
    .registers 8

    .prologue
    const/4 v5, 0x3

    const/4 v4, 0x2

    const/4 v3, 0x1

    const/4 v2, 0x0

    .line 229
    aget v0, p0, v2

    .line 230
    ushr-int/lit8 v1, v0, 0x1

    aput v1, p1, v2

    .line 231
    shl-int/lit8 v0, v0, 0x1f

    .line 232
    aget v1, p0, v3

    .line 233
    ushr-int/lit8 v2, v1, 0x1

    or-int/2addr v0, v2

    aput v0, p1, v3

    .line 234
    shl-int/lit8 v0, v1, 0x1f

    .line 235
    aget v1, p0, v4

    .line 236
    ushr-int/lit8 v2, v1, 0x1

    or-int/2addr v0, v2

    aput v0, p1, v4

    .line 237
    shl-int/lit8 v0, v1, 0x1f

    .line 238
    aget v1, p0, v5

    .line 239
    ushr-int/lit8 v2, v1, 0x1

    or-int/2addr v0, v2

    aput v0, p1, v5

    .line 240
    shl-int/lit8 v0, v1, 0x1f

    return v0
.end method

.method static shiftRight([J)J
    .registers 9

    .prologue
    const/16 v7, 0x3f

    const/4 v4, 0x0

    const/4 v6, 0x1

    .line 245
    aget-wide v0, p0, v4

    .line 246
    ushr-long v2, v0, v6

    aput-wide v2, p0, v4

    .line 247
    shl-long/2addr v0, v7

    .line 248
    aget-wide v2, p0, v6

    .line 249
    ushr-long v4, v2, v6

    or-long/2addr v0, v4

    aput-wide v0, p0, v6

    .line 250
    shl-long v0, v2, v7

    return-wide v0
.end method

.method static shiftRight([J[J)J
    .registers 10

    .prologue
    const/16 v7, 0x3f

    const/4 v4, 0x0

    const/4 v6, 0x1

    .line 255
    aget-wide v0, p0, v4

    .line 256
    ushr-long v2, v0, v6

    aput-wide v2, p1, v4

    .line 257
    shl-long/2addr v0, v7

    .line 258
    aget-wide v2, p0, v6

    .line 259
    ushr-long v4, v2, v6

    or-long/2addr v0, v4

    aput-wide v0, p1, v6

    .line 260
    shl-long v0, v2, v7

    return-wide v0
.end method

.method static shiftRightN([II)I
    .registers 9

    .prologue
    const/4 v6, 0x3

    const/4 v5, 0x2

    const/4 v4, 0x1

    const/4 v3, 0x0

    .line 274
    aget v0, p0, v3

    rsub-int/lit8 v1, p1, 0x20

    .line 275
    ushr-int v2, v0, p1

    aput v2, p0, v3

    .line 276
    shl-int/2addr v0, v1

    .line 277
    aget v2, p0, v4

    .line 278
    ushr-int v3, v2, p1

    or-int/2addr v0, v3

    aput v0, p0, v4

    .line 279
    shl-int v0, v2, v1

    .line 280
    aget v2, p0, v5

    .line 281
    ushr-int v3, v2, p1

    or-int/2addr v0, v3

    aput v0, p0, v5

    .line 282
    shl-int v0, v2, v1

    .line 283
    aget v2, p0, v6

    .line 284
    ushr-int v3, v2, p1

    or-int/2addr v0, v3

    aput v0, p0, v6

    .line 285
    shl-int v0, v2, v1

    return v0
.end method

.method static shiftRightN([II[I)I
    .registers 10

    .prologue
    const/4 v6, 0x3

    const/4 v5, 0x2

    const/4 v4, 0x1

    const/4 v3, 0x0

    .line 299
    aget v0, p0, v3

    rsub-int/lit8 v1, p1, 0x20

    .line 300
    ushr-int v2, v0, p1

    aput v2, p2, v3

    .line 301
    shl-int/2addr v0, v1

    .line 302
    aget v2, p0, v4

    .line 303
    ushr-int v3, v2, p1

    or-int/2addr v0, v3

    aput v0, p2, v4

    .line 304
    shl-int v0, v2, v1

    .line 305
    aget v2, p0, v5

    .line 306
    ushr-int v3, v2, p1

    or-int/2addr v0, v3

    aput v0, p2, v5

    .line 307
    shl-int v0, v2, v1

    .line 308
    aget v2, p0, v6

    .line 309
    ushr-int v3, v2, p1

    or-int/2addr v0, v3

    aput v0, p2, v6

    .line 310
    shl-int v0, v2, v1

    return v0
.end method

.method public static xor([B[B)V
    .registers 5

    .prologue
    .line 315
    const/4 v0, 0x0

    .line 318
    :cond_1
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p0, v0

    add-int/lit8 v0, v0, 0x1

    .line 319
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p0, v0

    add-int/lit8 v0, v0, 0x1

    .line 320
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p0, v0

    add-int/lit8 v0, v0, 0x1

    .line 321
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p0, v0

    add-int/lit8 v0, v0, 0x1

    .line 323
    const/16 v1, 0x10

    if-lt v0, v1, :cond_1

    .line 324
    return-void
.end method

.method public static xor([B[BII)V
    .registers 6

    .prologue
    .line 328
    :goto_0
    add-int/lit8 p3, p3, -0x1

    if-ltz p3, :cond_f

    .line 330
    aget-byte v0, p0, p3

    add-int v1, p2, p3

    aget-byte v1, p1, v1

    xor-int/2addr v0, v1

    int-to-byte v0, v0

    aput-byte v0, p0, p3

    goto :goto_0

    .line 332
    :cond_f
    return-void
.end method

.method public static xor([B[B[B)V
    .registers 6

    .prologue
    .line 336
    const/4 v0, 0x0

    .line 339
    :cond_1
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p2, v0

    add-int/lit8 v0, v0, 0x1

    .line 340
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p2, v0

    add-int/lit8 v0, v0, 0x1

    .line 341
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p2, v0

    add-int/lit8 v0, v0, 0x1

    .line 342
    aget-byte v1, p0, v0

    aget-byte v2, p1, v0

    xor-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p2, v0

    add-int/lit8 v0, v0, 0x1

    .line 344
    const/16 v1, 0x10

    if-lt v0, v1, :cond_1

    .line 345
    return-void
.end method

.method public static xor([I[I)V
    .registers 8

    .prologue
    const/4 v5, 0x3

    const/4 v4, 0x2

    const/4 v3, 0x1

    const/4 v2, 0x0

    .line 349
    aget v0, p0, v2

    aget v1, p1, v2

    xor-int/2addr v0, v1

    aput v0, p0, v2

    .line 350
    aget v0, p0, v3

    aget v1, p1, v3

    xor-int/2addr v0, v1

    aput v0, p0, v3

    .line 351
    aget v0, p0, v4

    aget v1, p1, v4

    xor-int/2addr v0, v1

    aput v0, p0, v4

    .line 352
    aget v0, p0, v5

    aget v1, p1, v5

    xor-int/2addr v0, v1

    aput v0, p0, v5

    .line 353
    return-void
.end method

.method public static xor([I[I[I)V
    .registers 9

    .prologue
    const/4 v5, 0x3

    const/4 v4, 0x2

    const/4 v3, 0x1

    const/4 v2, 0x0

    .line 357
    aget v0, p0, v2

    aget v1, p1, v2

    xor-int/2addr v0, v1

    aput v0, p2, v2

    .line 358
    aget v0, p0, v3

    aget v1, p1, v3

    xor-int/2addr v0, v1

    aput v0, p2, v3

    .line 359
    aget v0, p0, v4

    aget v1, p1, v4

    xor-int/2addr v0, v1

    aput v0, p2, v4

    .line 360
    aget v0, p0, v5

    aget v1, p1, v5

    xor-int/2addr v0, v1

    aput v0, p2, v5

    .line 361
    return-void
.end method

.method public static xor([J[J)V
    .registers 8

    .prologue
    const/4 v5, 0x1

    const/4 v4, 0x0

    .line 365
    aget-wide v0, p0, v4

    aget-wide v2, p1, v4

    xor-long/2addr v0, v2

    aput-wide v0, p0, v4

    .line 366
    aget-wide v0, p0, v5

    aget-wide v2, p1, v5

    xor-long/2addr v0, v2

    aput-wide v0, p0, v5

    .line 367
    return-void
.end method

.method public static xor([J[J[J)V
    .registers 9

    .prologue
    const/4 v5, 0x1

    const/4 v4, 0x0

    .line 371
    aget-wide v0, p0, v4

    aget-wide v2, p1, v4

    xor-long/2addr v0, v2

    aput-wide v0, p2, v4

    .line 372
    aget-wide v0, p0, v5

    aget-wide v2, p1, v5

    xor-long/2addr v0, v2

    aput-wide v0, p2, v5

    .line 373
    return-void
.end method