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Fix PRNG code

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This commit is contained in:
brenosilva 2012-06-15 17:06:10 +00:00
parent 4ef3cc8eba
commit 575356f10c
2 changed files with 6 additions and 6 deletions
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10
apache2/msc_crypt.c
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@ -122,20 +122,20 @@ char *normalize_path(modsec_rec *msr, char *input) {
* \retval seed random seed
*/
unsigned long prng() {
short num_matrix1[10]; num_matrix2[10];
short num_matrix1[10], num_matrix2[10];
unsigned long num, num1, num2;
short n, *p;
unsigned short seed_num;
unsigned long seed;
seed_num = seed & N16BITS_MASK;
seed_num = seed & N16BITS_MAX;
num = seed & N31BITS_MASK;
p = num_matrix1;
for(n = 18; n-- ; ) {
num = 30903*seed_num + (num>>16);
*p++ = seed_num = num & N16BITS_MASK;
*p++ = seed_num = num & N16BITS_MAX;
if (n == 9)
p = num_matrix2;
}
@ -160,8 +160,8 @@ unsigned long prng() {
num_matrix1[0] = num1/N16BITS_MASK;
num_matrix2[0] = num2/N16BITS_MASK;
num_matrix1[1] = N16BITS_MASK&num1;
num_matrix2[1] = N16BITS_MASK&num2;
num_matrix1[1] = N16BITS_MAX & num1;
num_matrix2[1] = N16BITS_MAX & num2;
seed = (((long)num_matrix1[1])<<16)+(long)num_matrix2[1];

2
apache2/msc_crypt.h
View File

@ -35,7 +35,7 @@ struct glinear {
};
#define N16BITS_MASK 65536L
#define N16BITS_MASK 0xFFFF
#define N16BITS_MAX 0xFFFF
#define N15BITS_MASK 0x7FFF
#define N31BITS_MASK 0x7FFFFFFF