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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
#include <u.h>
#include <libc.h>
#include <libsec.h>
static void
printblock(uchar *b, usize n)
{
int i;
for(i=0; i+8<=n; i+=8){
print("%#.2ux %#.2ux %#.2ux %#.2ux %#.2ux %#.2ux %#.2ux %#.2ux\n",
b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
b += 8;
}
if(i < n){
print("%#.2ux", *b++);
while(++i < n)
print(" %#.2ux", *b++);
print("\n");
}
}
/* test vector from RFC7539 */
uchar rfckey[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f};
uchar rfcnonce[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x00, 0x00, 0x00};
u32int rfccount = 1;
char rfctext[] = "Ladies and Gentlemen of the class of '99: If I could offer you only one tip for the future, "
"sunscreen would be it.";
uchar rfcout[3*ChachaBsize];
uchar rfcref[] = {
0x6e, 0x2e, 0x35, 0x9a, 0x25, 0x68, 0xf9, 0x80, 0x41, 0xba, 0x07, 0x28, 0xdd, 0x0d, 0x69, 0x81,
0xe9, 0x7e, 0x7a, 0xec, 0x1d, 0x43, 0x60, 0xc2, 0x0a, 0x27, 0xaf, 0xcc, 0xfd, 0x9f, 0xae, 0x0b,
0xf9, 0x1b, 0x65, 0xc5, 0x52, 0x47, 0x33, 0xab, 0x8f, 0x59, 0x3d, 0xab, 0xcd, 0x62, 0xb3, 0x57,
0x16, 0x39, 0xd6, 0x24, 0xe6, 0x51, 0x52, 0xab, 0x8f, 0x53, 0x0c, 0x35, 0x9f, 0x08, 0x61, 0xd8,
0x07, 0xca, 0x0d, 0xbf, 0x50, 0x0d, 0x6a, 0x61, 0x56, 0xa3, 0x8e, 0x08, 0x8a, 0x22, 0xb6, 0x5e,
0x52, 0xbc, 0x51, 0x4d, 0x16, 0xcc, 0xf8, 0x06, 0x81, 0x8c, 0xe9, 0x1a, 0xb7, 0x79, 0x37, 0x36,
0x5a, 0xf9, 0x0b, 0xbf, 0x74, 0xa3, 0x5b, 0xe6, 0xb4, 0x0b, 0x8e, 0xed, 0xf2, 0x78, 0x5e, 0x42,
0x87, 0x4d
};
uchar ccpaad[] = {
0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
};
uchar ccpkey[] = {
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
};
uchar ccpiv[] = {
0x07, 0x00, 0x00, 0x00,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
};
uchar ccptag[] = {
0x1a, 0xe1, 0x0b, 0x59, 0x4f, 0x09, 0xe2, 0x6a, 0x7e, 0x90, 0x2e, 0xcb, 0xd0, 0x60, 0x06, 0x91,
};
uchar ccp64aad[] = {
0x87, 0xe2, 0x29, 0xd4, 0x50, 0x08, 0x45, 0xa0, 0x79, 0xc0,
};
uchar ccp64key[] = {
0x42, 0x90, 0xbc, 0xb1, 0x54, 0x17, 0x35, 0x31, 0xf3, 0x14, 0xaf, 0x57, 0xf3, 0xbe, 0x3b, 0x50,
0x06, 0xda, 0x37, 0x1e, 0xce, 0x27, 0x2a, 0xfa, 0x1b, 0x5d, 0xbd, 0xd1, 0x10, 0x0a, 0x10, 0x07,
};
uchar ccp64iv[] = {
0xcd, 0x7c, 0xf6, 0x7b, 0xe3, 0x9c, 0x79, 0x4a,
};
uchar ccp64inp[] = {
0x86, 0xd0, 0x99, 0x74, 0x84, 0x0b, 0xde, 0xd2, 0xa5, 0xca,
};
uchar ccp64out[] = {
0xe3, 0xe4, 0x46, 0xf7, 0xed, 0xe9, 0xa1, 0x9b, 0x62, 0xa4,
};
uchar ccp64tag[] = {
0x67, 0x7d, 0xab, 0xf4, 0xe3, 0xd2, 0x4b, 0x87, 0x6b, 0xb2, 0x84, 0x75, 0x38, 0x96, 0xe1, 0xd6,
};
void
main(int argc, char **argv)
{
Chachastate s;
uchar tag[16];
int n;
ARGBEGIN{
}ARGEND
print("rfc7539:\n");
print("key:\n");
printblock(rfckey, sizeof(rfckey));
n = strlen(rfctext);
setupChachastate(&s, rfckey, sizeof(rfckey), rfcnonce, sizeof(rfcnonce), 0);
chacha_setblock(&s, rfccount);
print("rfc in:\n");
printblock((uchar*)rfctext, n);
chacha_encrypt2((uchar*)rfctext, rfcout, n, &s);
print("rfc out:\n");
printblock(rfcout, n);
if(memcmp(rfcout, rfcref, sizeof(rfcref)) != 0){
print("failure of vision\n");
exits("wrong");
}
print("\n");
print("ccpoly key:\n");
printblock(ccpkey, sizeof(ccpkey));
print("ccpoly iv:\n");
printblock(ccpiv, sizeof(ccpiv));
setupChachastate(&s, ccpkey, sizeof(ccpkey), ccpiv, sizeof(ccpiv), 20);
memmove(rfcout, rfctext, sizeof(rfctext)-1);
ccpoly_encrypt(rfcout, sizeof(rfctext)-1, ccpaad, sizeof(ccpaad), tag, &s);
print("ccpoly cipher:\n");
printblock(rfcout, sizeof(rfctext)-1);
print("ccpoly tag:\n");
printblock(tag, sizeof(tag));
if(memcmp(tag, ccptag, sizeof(tag)) != 0){
print("bad ccpoly tag\n");
exits("wrong");
}
if(ccpoly_decrypt(rfcout, sizeof(rfctext)-1, ccpaad, sizeof(ccpaad), tag, &s) != 0){
print("ccpoly decryption failed\n");
exits("wrong");
}
if(memcmp(rfcout, rfctext, sizeof(rfctext)-1) != 0){
print("ccpoly bad decryption\n");
exits("wrong");
}
print("\n");
print("ccpoly64 key:\n");
printblock(ccp64key, sizeof(ccp64key));
print("ccpoly64 iv:\n");
printblock(ccp64iv, sizeof(ccp64iv));
setupChachastate(&s, ccp64key, sizeof(ccp64key), ccp64iv, sizeof(ccp64iv), 20);
memmove(rfcout, ccp64inp, sizeof(ccp64inp));
ccpoly_encrypt(rfcout, sizeof(ccp64inp), ccp64aad, sizeof(ccp64aad), tag, &s);
print("ccpoly64 cipher:\n");
printblock(rfcout, sizeof(ccp64inp));
print("ccpoly64 tag:\n");
printblock(tag, sizeof(tag));
if(memcmp(rfcout, ccp64out, sizeof(ccp64out)) != 0){
print("ccpoly64 bad ciphertext\n");
exits("wrong");
}
if(memcmp(tag, ccp64tag, sizeof(ccp64tag)) != 0){
print("ccpoly64 bad encryption tag\n");
exits("wrong");
}
if(ccpoly_decrypt(rfcout, sizeof(ccp64inp), ccp64aad, sizeof(ccp64aad), tag, &s) != 0){
print("ccpoly64 decryption failed\n");
exits("wrong");
}
if(memcmp(rfcout, ccp64inp, sizeof(ccp64inp)) != 0){
print("ccpoly64 bad decryption\n");
exits("wrong");
}
print("passed\n");
exits(nil);
}
|
