private void method_1(Class68 options)
{
byte[] hash = Md5Helper.ComputeHash(Class69.smethod_1(options.OwnerPassword ?? options.UserPassword));
byte[] dataIn = Class69.smethod_1(options.UserPassword);
Class44 class44 = new Class44(hash, 0, 5);
this.byte_1 = new byte[32];
class44.method_1(dataIn, this.byte_1);
}
internal static bool smethod_2(
string password,
byte[] userEntry,
byte[] ownerEntry,
int permissions,
byte[] fileId)
{
return(Class69.smethod_3(Class69.smethod_1(password), userEntry, ownerEntry, permissions, fileId));
}
internal static bool smethod_4(
string password,
byte[] userEntry,
byte[] ownerEntry,
int permissions,
byte[] fileId)
{
Class44 class44 = new Class44(Md5Helper.ComputeHash(Class69.smethod_1(password)), 0, 5);
byte[] numArray = new byte[32];
class44.method_1(ownerEntry, numArray);
return(Class69.smethod_3(numArray, userEntry, ownerEntry, permissions, fileId));
}
private void method_0(Class68 options, PdfFileIdentifier fileId)
{
this.byte_3 = Class69.smethod_0(Class69.smethod_1(options.UserPassword), this.byte_1, options.Permissions, fileId.CreatedPart);
}
public static void smethod_0(float[] float_1, int[] int_0, int int_1, int int_2, float[] float_2, int int_3, float float_3, float float_4)
{
float num = Class77.float_0 / (float)int_2;
int i;
for (i = 0; i < int_3; i++)
{
float_2[i] = Class69.smethod_0(float_2[i]);
}
int num2 = int_3 / 2 * 2;
i = 0;
while (i < int_1)
{
Class77.Struct15 @struct = default(Class77.Struct15);
int num3 = int_0[i];
float num4 = 0.707106769f;
float num5 = 0.707106769f;
float num6 = Class69.smethod_0(num * (float)num3);
for (int j = 0; j < num2; j += 2)
{
num5 *= float_2[j] - num6;
num4 *= float_2[j + 1] - num6;
}
if ((int_3 & 1) != 0)
{
num5 *= float_2[int_3 - 1] - num6;
num5 *= num5;
num4 *= num4 * (1f - num6 * num6);
}
else
{
num5 *= num5 * (1f + num6);
num4 *= num4 * (1f - num6);
}
num5 = num4 + num5;
@struct.float_0 = num5;
int num7 = @struct.int_0;
int num8 = 2147483647 & num7;
int num9 = 0;
if (num8 < 2139095040 && num8 != 0)
{
if (num8 < 8388608)
{
num5 *= 33554432f;
@struct.float_0 = num5;
num7 = @struct.int_0;
num8 = (2147483647 & num7);
num9 = -25;
}
num9 += (int)(((uint)num8 >> 23) - 126u);
num7 = (int)(((long)num7 & 2155872255L) | 1056964608L);
@struct.int_0 = num7;
num5 = @struct.float_0;
}
num5 = Class69.smethod_3(float_3 * Class69.smethod_1(num5) * Class69.smethod_2(num9 + int_3) - float_4);
do
{
float_1[i] *= num5;
i++;
if (i >= int_1)
{
break;
}
}while (int_0[i] == num3);
}
}