ChaChaEngine.smali

.class public Lorg/spongycastle/crypto/engines/ChaChaEngine;
.super Lorg/spongycastle/crypto/engines/Salsa20Engine;
.source "ChaChaEngine.java"


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

    .prologue
    .line 15
    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/Salsa20Engine;-><init>()V

    .line 16
    return-void
.end method

.method public constructor <init>(I)V
    .registers 2

    .prologue
    .line 24
    invoke-direct {p0, p1}, Lorg/spongycastle/crypto/engines/Salsa20Engine;-><init>(I)V

    .line 25
    return-void
.end method

.method public static chachaCore(I[I[I)V
    .registers 22

    .prologue
    .line 175
    move-object/from16 v0, p1

    array-length v1, v0

    const/16 v2, 0x10

    if-eq v1, v2, :cond_d

    .line 177
    new-instance v1, Ljava/lang/IllegalArgumentException;

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

    throw v1

    .line 179
    :cond_d
    move-object/from16 v0, p2

    array-length v1, v0

    const/16 v2, 0x10

    if-eq v1, v2, :cond_1a

    .line 181
    new-instance v1, Ljava/lang/IllegalArgumentException;

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

    throw v1

    .line 183
    :cond_1a
    rem-int/lit8 v1, p0, 0x2

    if-eqz v1, :cond_26

    .line 185
    new-instance v1, Ljava/lang/IllegalArgumentException;

    const-string v2, "Number of rounds must be even"

    invoke-direct {v1, v2}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v1

    .line 188
    :cond_26
    const/4 v1, 0x0

    aget v16, p1, v1

    .line 189
    const/4 v1, 0x1

    aget v15, p1, v1

    .line 190
    const/4 v1, 0x2

    aget v14, p1, v1

    .line 191
    const/4 v1, 0x3

    aget v13, p1, v1

    .line 192
    const/4 v1, 0x4

    aget v12, p1, v1

    .line 193
    const/4 v1, 0x5

    aget v11, p1, v1

    .line 194
    const/4 v1, 0x6

    aget v10, p1, v1

    .line 195
    const/4 v1, 0x7

    aget v9, p1, v1

    .line 196
    const/16 v1, 0x8

    aget v8, p1, v1

    .line 197
    const/16 v1, 0x9

    aget v7, p1, v1

    .line 198
    const/16 v1, 0xa

    aget v6, p1, v1

    .line 199
    const/16 v1, 0xb

    aget v5, p1, v1

    .line 200
    const/16 v1, 0xc

    aget v4, p1, v1

    .line 201
    const/16 v1, 0xd

    aget v3, p1, v1

    .line 202
    const/16 v1, 0xe

    aget v2, p1, v1

    .line 203
    const/16 v1, 0xf

    aget v1, p1, v1

    .line 205
    :goto_5e
    if-lez p0, :cond_1ac

    .line 207
    add-int v16, v16, v12

    xor-int v4, v4, v16

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v4, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v4

    .line 208
    add-int/2addr v8, v4

    xor-int/2addr v12, v8

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v12, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v12

    .line 209
    add-int v16, v16, v12

    xor-int v4, v4, v16

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v4, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v4

    .line 210
    add-int/2addr v8, v4

    xor-int/2addr v12, v8

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v12, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v12

    .line 211
    add-int/2addr v15, v11

    xor-int/2addr v3, v15

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v3, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v3

    .line 212
    add-int/2addr v7, v3

    xor-int/2addr v11, v7

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v11, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v11

    .line 213
    add-int/2addr v15, v11

    xor-int/2addr v3, v15

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v3, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v3

    .line 214
    add-int/2addr v7, v3

    xor-int/2addr v11, v7

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v11, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v11

    .line 215
    add-int/2addr v14, v10

    xor-int/2addr v2, v14

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v2, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v2

    .line 216
    add-int/2addr v6, v2

    xor-int/2addr v10, v6

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v10, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v10

    .line 217
    add-int/2addr v14, v10

    xor-int/2addr v2, v14

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v2, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v2

    .line 218
    add-int/2addr v6, v2

    xor-int/2addr v10, v6

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v10, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v10

    .line 219
    add-int/2addr v13, v9

    xor-int/2addr v1, v13

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v1

    .line 220
    add-int/2addr v5, v1

    xor-int/2addr v9, v5

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v9, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v9

    .line 221
    add-int/2addr v13, v9

    xor-int/2addr v1, v13

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v1

    .line 222
    add-int/2addr v5, v1

    xor-int/2addr v9, v5

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v9, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v9

    .line 223
    add-int v16, v16, v11

    xor-int v1, v1, v16

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v1

    .line 224
    add-int/2addr v6, v1

    xor-int/2addr v11, v6

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v11, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v11

    .line 225
    add-int v16, v16, v11

    xor-int v1, v1, v16

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v1, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v1

    .line 226
    add-int/2addr v6, v1

    xor-int/2addr v11, v6

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v11, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v11

    .line 227
    add-int/2addr v15, v10

    xor-int/2addr v4, v15

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v4, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v4

    .line 228
    add-int/2addr v5, v4

    xor-int/2addr v10, v5

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v10, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v10

    .line 229
    add-int/2addr v15, v10

    xor-int/2addr v4, v15

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v4, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v4

    .line 230
    add-int/2addr v5, v4

    xor-int/2addr v10, v5

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v10, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v10

    .line 231
    add-int/2addr v14, v9

    xor-int/2addr v3, v14

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v3, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v3

    .line 232
    add-int/2addr v8, v3

    xor-int/2addr v9, v8

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v9, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v9

    .line 233
    add-int/2addr v14, v9

    xor-int/2addr v3, v14

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v3, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v3

    .line 234
    add-int/2addr v8, v3

    xor-int/2addr v9, v8

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v9, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v9

    .line 235
    add-int/2addr v13, v12

    xor-int/2addr v2, v13

    const/16 v17, 0x10

    move/from16 v0, v17

    invoke-static {v2, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v2

    .line 236
    add-int/2addr v7, v2

    xor-int/2addr v12, v7

    const/16 v17, 0xc

    move/from16 v0, v17

    invoke-static {v12, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v12

    .line 237
    add-int/2addr v13, v12

    xor-int/2addr v2, v13

    const/16 v17, 0x8

    move/from16 v0, v17

    invoke-static {v2, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v2

    .line 238
    add-int/2addr v7, v2

    xor-int/2addr v12, v7

    const/16 v17, 0x7

    move/from16 v0, v17

    invoke-static {v12, v0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rotl(II)I

    move-result v12

    .line 205
    add-int/lit8 p0, p0, -0x2

    goto/16 :goto_5e

    .line 242
    :cond_1ac
    const/16 v17, 0x0

    const/16 v18, 0x0

    aget v18, p1, v18

    add-int v16, v16, v18

    aput v16, p2, v17

    .line 243
    const/16 v16, 0x1

    const/16 v17, 0x1

    aget v17, p1, v17

    add-int v15, v15, v17

    aput v15, p2, v16

    .line 244
    const/4 v15, 0x2

    const/16 v16, 0x2

    aget v16, p1, v16

    add-int v14, v14, v16

    aput v14, p2, v15

    .line 245
    const/4 v14, 0x3

    const/4 v15, 0x3

    aget v15, p1, v15

    add-int/2addr v13, v15

    aput v13, p2, v14

    .line 246
    const/4 v13, 0x4

    const/4 v14, 0x4

    aget v14, p1, v14

    add-int/2addr v12, v14

    aput v12, p2, v13

    .line 247
    const/4 v12, 0x5

    const/4 v13, 0x5

    aget v13, p1, v13

    add-int/2addr v11, v13

    aput v11, p2, v12

    .line 248
    const/4 v11, 0x6

    const/4 v12, 0x6

    aget v12, p1, v12

    add-int/2addr v10, v12

    aput v10, p2, v11

    .line 249
    const/4 v10, 0x7

    const/4 v11, 0x7

    aget v11, p1, v11

    add-int/2addr v9, v11

    aput v9, p2, v10

    .line 250
    const/16 v9, 0x8

    const/16 v10, 0x8

    aget v10, p1, v10

    add-int/2addr v8, v10

    aput v8, p2, v9

    .line 251
    const/16 v8, 0x9

    const/16 v9, 0x9

    aget v9, p1, v9

    add-int/2addr v7, v9

    aput v7, p2, v8

    .line 252
    const/16 v7, 0xa

    const/16 v8, 0xa

    aget v8, p1, v8

    add-int/2addr v6, v8

    aput v6, p2, v7

    .line 253
    const/16 v6, 0xb

    const/16 v7, 0xb

    aget v7, p1, v7

    add-int/2addr v5, v7

    aput v5, p2, v6

    .line 254
    const/16 v5, 0xc

    const/16 v6, 0xc

    aget v6, p1, v6

    add-int/2addr v4, v6

    aput v4, p2, v5

    .line 255
    const/16 v4, 0xd

    const/16 v5, 0xd

    aget v5, p1, v5

    add-int/2addr v3, v5

    aput v3, p2, v4

    .line 256
    const/16 v3, 0xe

    const/16 v4, 0xe

    aget v4, p1, v4

    add-int/2addr v2, v4

    aput v2, p2, v3

    .line 257
    const/16 v2, 0xf

    const/16 v3, 0xf

    aget v3, p1, v3

    add-int/2addr v1, v3

    aput v1, p2, v2

    .line 258
    return-void
.end method


# virtual methods
.method protected advanceCounter()V
    .registers 4

    .prologue
    .line 54
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v1, 0xc

    aget v2, v0, v1

    add-int/lit8 v2, v2, 0x1

    aput v2, v0, v1

    if-nez v2, :cond_16

    .line 56
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v1, 0xd

    aget v2, v0, v1

    add-int/lit8 v2, v2, 0x1

    aput v2, v0, v1

    .line 58
    :cond_16
    return-void
.end method

.method protected advanceCounter(J)V
    .registers 10

    .prologue
    const/16 v5, 0xd

    const/16 v4, 0xc

    .line 34
    const/16 v0, 0x20

    ushr-long v0, p1, v0

    long-to-int v0, v0

    .line 35
    long-to-int v1, p1

    .line 37
    if-lez v0, :cond_13

    .line 39
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v3, v2, v5

    add-int/2addr v0, v3

    aput v0, v2, v5

    .line 42
    :cond_13
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v0, v0, v4

    .line 44
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v3, v2, v4

    add-int/2addr v1, v3

    aput v1, v2, v4

    .line 46
    if-eqz v0, :cond_2e

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v1, v1, v4

    if-ge v1, v0, :cond_2e

    .line 48
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v1, v0, v5

    add-int/lit8 v1, v1, 0x1

    aput v1, v0, v5

    .line 50
    :cond_2e
    return-void
.end method

.method protected generateKeyStream([B)V
    .registers 5

    .prologue
    .line 164
    iget v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rounds:I

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->x:[I

    invoke-static {v0, v1, v2}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->chachaCore(I[I[I)V

    .line 165
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->x:[I

    const/4 v1, 0x0

    invoke-static {v0, p1, v1}, Lorg/spongycastle/util/Pack;->intToLittleEndian([I[BI)V

    .line 166
    return-void
.end method

.method public getAlgorithmName()Ljava/lang/String;
    .registers 3

    .prologue
    .line 29
    new-instance v0, Ljava/lang/StringBuilder;

    const-string v1, "ChaCha"

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

    iget v1, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->rounds:I

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    move-result-object v0

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v0

    return-object v0
.end method

.method protected getCounter()J
    .registers 7

    .prologue
    .line 110
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v1, 0xd

    aget v0, v0, v1

    int-to-long v0, v0

    const/16 v2, 0x20

    shl-long/2addr v0, v2

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v3, 0xc

    aget v2, v2, v3

    int-to-long v2, v2

    const-wide v4, 0xffffffffL

    and-long/2addr v2, v4

    or-long/2addr v0, v2

    return-wide v0
.end method

.method protected resetCounter()V
    .registers 6

    .prologue
    .line 115
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v1, 0xc

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v3, 0xd

    const/4 v4, 0x0

    aput v4, v2, v3

    aput v4, v0, v1

    .line 116
    return-void
.end method

.method protected retreatCounter()V
    .registers 5

    .prologue
    const/16 v3, 0xd

    const/16 v2, 0xc

    .line 97
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v0, v0, v2

    if-nez v0, :cond_18

    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v0, v0, v3

    if-nez v0, :cond_18

    .line 99
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "attempt to reduce counter past zero."

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

    throw v0

    .line 102
    :cond_18
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v1, v0, v2

    add-int/lit8 v1, v1, -0x1

    aput v1, v0, v2

    const/4 v0, -0x1

    if-ne v1, v0, :cond_2b

    .line 104
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v1, v0, v3

    add-int/lit8 v1, v1, -0x1

    aput v1, v0, v3

    .line 106
    :cond_2b
    return-void
.end method

.method protected retreatCounter(J)V
    .registers 14

    .prologue
    const/16 v7, 0xc

    const-wide v8, 0xffffffffL

    const/16 v6, 0xd

    .line 62
    const/16 v0, 0x20

    ushr-long v0, p1, v0

    long-to-int v0, v0

    .line 63
    long-to-int v1, p1

    .line 65
    if-eqz v0, :cond_25

    .line 67
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v2, v2, v6

    int-to-long v2, v2

    and-long/2addr v2, v8

    int-to-long v4, v0

    and-long/2addr v4, v8

    cmp-long v2, v2, v4

    if-ltz v2, :cond_3a

    .line 69
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v3, v2, v6

    sub-int v0, v3, v0

    aput v0, v2, v6

    .line 77
    :cond_25
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v0, v0, v7

    int-to-long v2, v0

    and-long/2addr v2, v8

    int-to-long v4, v1

    and-long/2addr v4, v8

    cmp-long v0, v2, v4

    if-ltz v0, :cond_42

    .line 79
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v2, v0, v7

    sub-int v1, v2, v1

    aput v1, v0, v7

    .line 86
    :goto_39
    return-void

    .line 73
    :cond_3a
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "attempt to reduce counter past zero."

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

    throw v0

    .line 83
    :cond_42
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v0, v0, v6

    if-eqz v0, :cond_59

    .line 85
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v2, v0, v6

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

    aput v2, v0, v6

    .line 86
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    aget v2, v0, v7

    sub-int v1, v2, v1

    aput v1, v0, v7

    goto :goto_39

    .line 90
    :cond_59
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "attempt to reduce counter past zero."

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

    throw v0
.end method

.method protected setKey([B[B)V
    .registers 12

    .prologue
    const/16 v0, 0x10

    const/16 v8, 0xc

    const/16 v7, 0x8

    const/4 v6, 0x4

    const/4 v1, 0x0

    .line 120
    if-eqz p1, :cond_a8

    .line 122
    array-length v2, p1

    if-eq v2, v0, :cond_2f

    array-length v2, p1

    const/16 v3, 0x20

    if-eq v2, v3, :cond_2f

    .line 124
    new-instance v0, Ljava/lang/IllegalArgumentException;

    new-instance v1, Ljava/lang/StringBuilder;

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

    invoke-virtual {p0}, Lorg/spongycastle/crypto/engines/ChaChaEngine;->getAlgorithmName()Ljava/lang/String;

    move-result-object v2

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v1

    const-string v2, " requires 128 bit or 256 bit key"

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v1

    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v1

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

    throw v0

    .line 128
    :cond_2f
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    invoke-static {p1, v1}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v3

    aput v3, v2, v6

    .line 129
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/4 v3, 0x5

    invoke-static {p1, v6}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v4

    aput v4, v2, v3

    .line 130
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/4 v3, 0x6

    invoke-static {p1, v7}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v4

    aput v4, v2, v3

    .line 131
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/4 v3, 0x7

    invoke-static {p1, v8}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v4

    aput v4, v2, v3

    .line 135
    array-length v2, p1

    const/16 v3, 0x20

    if-ne v2, v3, :cond_bd

    .line 137
    sget-object v2, Lorg/spongycastle/crypto/engines/ChaChaEngine;->sigma:[B

    .line 146
    :goto_59
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

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

    move-result v4

    aput v4, v3, v7

    .line 147
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v4, 0x9

    add-int/lit8 v5, v0, 0x4

    invoke-static {p1, v5}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v5

    aput v5, v3, v4

    .line 148
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v4, 0xa

    add-int/lit8 v5, v0, 0x8

    invoke-static {p1, v5}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v5

    aput v5, v3, v4

    .line 149
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v4, 0xb

    add-int/lit8 v0, v0, 0xc

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

    move-result v0

    aput v0, v3, v4

    .line 151
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    invoke-static {v2, v1}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v3

    aput v3, v0, v1

    .line 152
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/4 v3, 0x1

    invoke-static {v2, v6}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v4

    aput v4, v0, v3

    .line 153
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/4 v3, 0x2

    invoke-static {v2, v7}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v4

    aput v4, v0, v3

    .line 154
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/4 v3, 0x3

    invoke-static {v2, v8}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v2

    aput v2, v0, v3

    .line 158
    :cond_a8
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v2, 0xe

    invoke-static {p2, v1}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v1

    aput v1, v0, v2

    .line 159
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->engineState:[I

    const/16 v1, 0xf

    invoke-static {p2, v6}, Lorg/spongycastle/util/Pack;->littleEndianToInt([BI)I

    move-result v2

    aput v2, v0, v1

    .line 160
    return-void

    .line 142
    :cond_bd
    sget-object v0, Lorg/spongycastle/crypto/engines/ChaChaEngine;->tau:[B

    move-object v2, v0

    move v0, v1

    .line 143
    goto :goto_59
.end method