forked from SabaEskandarian/ObliDB
-
Notifications
You must be signed in to change notification settings - Fork 0
/
definitions.cpp
78 lines (73 loc) · 1.79 KB
/
definitions.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
#include "definitions.h"
int getEncBlockSize(Obliv_Type type){
int encBlockSize = 0;
//note: maybe later I can have all encrypted blocks padded to be the same size and hide the type of structure
switch(type){ //get the correct encrypted block size
case TYPE_LINEAR_SCAN:
encBlockSize = sizeof(Encrypted_Linear_Scan_Block);
break;
case TYPE_TREE_ORAM:
encBlockSize = sizeof(Encrypted_Oram_Block);
break;
case TYPE_ORAM:
encBlockSize = sizeof(Encrypted_Oram_Block);
break;
case TYPE_LINEAR_UNENCRYPTED:
encBlockSize = getBlockSize(TYPE_LINEAR_SCAN);
break;
}
return encBlockSize;
}
int getBlockSize(Obliv_Type type){
int encBlockSize = 0;
//note: maybe later I can have all encrypted blocks padded to be the same size and hide the type of structure
switch(type){ //get the correct encrypted block size
case TYPE_LINEAR_SCAN:
encBlockSize = sizeof(Real_Linear_Scan_Block);
break;
case TYPE_LINEAR_UNENCRYPTED:
encBlockSize = sizeof(Linear_Scan_Block);
break;
case TYPE_TREE_ORAM:
encBlockSize = sizeof(Oram_Block);
break;
case TYPE_ORAM:
encBlockSize = sizeof(Oram_Block);
break;
}
return encBlockSize;
}
int getDBTypeSize(DB_Type type){
int ret = 0;
switch(type){
case INTEGER:
ret = 4;
break;
case TINYTEXT:
ret = 255;
break;
case CHAR:
ret = 1;
break;
}
return ret;
}
int getRowSize(Schema *schema){
int rowSize = 0;
for(int i = 0; i < schema->numFields; i++){
if(schema->fieldOffsets[i] != rowSize) return -i;//offsets wrong
if(i > 0 && schema->fieldOffsets[i] != schema->fieldOffsets[i-1]+getDBTypeSize(schema->fieldTypes[i-1])) return -2; //offsets wrong
rowSize += schema->fieldSizes[i];
}
return rowSize;
}
int nextPowerOfTwo(unsigned int v){
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return v;
}