BinTools.smali

.class Lnet/lingala/zip4j/crypto/PBKDF2/BinTools;
.super Ljava/lang/Object;


# static fields
.field public static final hex:Ljava/lang/String; = "0123456789ABCDEF"


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

    .line 1
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static bin2hex([B)Ljava/lang/String;
    .registers 6

    if-nez p0, :cond_5

    const-string p0, ""

    return-object p0

    .line 1
    :cond_5
    new-instance v0, Ljava/lang/StringBuffer;

    array-length v1, p0

    mul-int/lit8 v1, v1, 0x2

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

    const/4 v1, 0x0

    .line 2
    :goto_e
    array-length v2, p0

    if-ge v1, v2, :cond_32

    .line 3
    aget-byte v2, p0, v1

    add-int/lit16 v2, v2, 0x100

    rem-int/lit16 v2, v2, 0x100

    .line 4
    div-int/lit8 v3, v2, 0x10

    and-int/lit8 v3, v3, 0xf

    const-string v4, "0123456789ABCDEF"

    invoke-virtual {v4, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    invoke-virtual {v0, v3}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 5
    rem-int/lit8 v2, v2, 0x10

    and-int/lit8 v2, v2, 0xf

    invoke-virtual {v4, v2}, Ljava/lang/String;->charAt(I)C

    move-result v2

    invoke-virtual {v0, v2}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    add-int/lit8 v1, v1, 0x1

    goto :goto_e

    .line 7
    :cond_32
    invoke-virtual {v0}, Ljava/lang/StringBuffer;->toString()Ljava/lang/String;

    move-result-object p0

    return-object p0
.end method

.method public static hex2bin(C)I
    .registers 4

    const/16 v0, 0x30

    if-lt p0, v0, :cond_a

    const/16 v1, 0x39

    if-gt p0, v1, :cond_a

    sub-int/2addr p0, v0

    return p0

    :cond_a
    const/16 v0, 0x41

    if-lt p0, v0, :cond_16

    const/16 v1, 0x46

    if-gt p0, v1, :cond_16

    :goto_12
    sub-int/2addr p0, v0

    add-int/lit8 p0, p0, 0xa

    return p0

    :cond_16
    const/16 v0, 0x61

    if-lt p0, v0, :cond_1f

    const/16 v1, 0x66

    if-gt p0, v1, :cond_1f

    goto :goto_12

    .line 10
    :cond_1f
    new-instance v0, Ljava/lang/IllegalArgumentException;

    new-instance v1, Ljava/lang/StringBuilder;

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

    const-string v2, "Input string may only contain hex digits, but found \'"

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

    invoke-virtual {v1, p0}, Ljava/lang/StringBuilder;->append(C)Ljava/lang/StringBuilder;

    const-string p0, "\'"

    invoke-virtual {v1, p0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

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

    move-result-object p0

    invoke-direct {v0, p0}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0
.end method

.method public static hex2bin(Ljava/lang/String;)[B
    .registers 6

    if-nez p0, :cond_5

    const-string p0, ""

    goto :goto_1e

    .line 1
    :cond_5
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v0

    rem-int/lit8 v0, v0, 0x2

    if-eqz v0, :cond_1e

    .line 3
    new-instance v0, Ljava/lang/StringBuilder;

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

    const-string v1, "0"

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

    invoke-virtual {v0, p0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

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

    move-result-object p0

    .line 5
    :cond_1e
    :goto_1e
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v0

    div-int/lit8 v0, v0, 0x2

    new-array v0, v0, [B

    const/4 v1, 0x0

    move v2, v1

    .line 6
    :goto_28
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v3

    if-ge v1, v3, :cond_4c

    add-int/lit8 v3, v1, 0x1

    .line 7
    invoke-virtual {p0, v1}, Ljava/lang/String;->charAt(I)C

    move-result v1

    add-int/lit8 v4, v3, 0x1

    .line 8
    invoke-virtual {p0, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    .line 9
    invoke-static {v1}, Lnet/lingala/zip4j/crypto/PBKDF2/BinTools;->hex2bin(C)I

    move-result v1

    mul-int/lit8 v1, v1, 0x10

    invoke-static {v3}, Lnet/lingala/zip4j/crypto/PBKDF2/BinTools;->hex2bin(C)I

    move-result v3

    add-int/2addr v1, v3

    int-to-byte v1, v1

    aput-byte v1, v0, v2

    add-int/lit8 v2, v2, 0x1

    move v1, v4

    goto :goto_28

    :cond_4c
    return-object v0
.end method