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e6ed2b91 AP |
1 | /* |
2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the OpenSSL license (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | #include <stdio.h> | |
10 | #include <string.h> | |
11 | #include <openssl/evp.h> | |
12 | #include <openssl/bio.h> | |
61884b81 | 13 | #include <openssl/rand.h> |
e6ed2b91 AP |
14 | |
15 | int main() | |
16 | { | |
17 | BIO *b; | |
18 | static const unsigned char key[16] = { 0 }; | |
19 | static unsigned char inp[1024] = { 0 }; | |
20 | unsigned char out[1024], ref[1024]; | |
21 | int i, lref, len; | |
22 | ||
61884b81 MC |
23 | /* Fill buffer with non-zero data so that over steps can be detected */ |
24 | if (RAND_bytes(inp, sizeof(inp)) <= 0) | |
e6ed2b91 | 25 | return -1; |
e6ed2b91 AP |
26 | |
27 | /* | |
28 | * Exercise CBC cipher | |
29 | */ | |
30 | ||
31 | /* reference output for single-chunk operation */ | |
32 | b = BIO_new(BIO_f_cipher()); | |
33 | if (!BIO_set_cipher(b, EVP_aes_128_cbc(), key, NULL, 0)) | |
34 | return -1; | |
35 | BIO_push(b, BIO_new_mem_buf(inp, sizeof(inp))); | |
36 | lref = BIO_read(b, ref, sizeof(ref)); | |
37 | BIO_free_all(b); | |
38 | ||
39 | /* perform split operations and compare to reference */ | |
40 | for (i = 1; i < lref; i++) { | |
41 | b = BIO_new(BIO_f_cipher()); | |
42 | if (!BIO_set_cipher(b, EVP_aes_128_cbc(), key, NULL, 0)) | |
43 | return -1; | |
44 | BIO_push(b, BIO_new_mem_buf(inp, sizeof(inp))); | |
45 | memset(out, 0, sizeof(out)); | |
46 | out[i] = ~ref[i]; | |
47 | len = BIO_read(b, out, i); | |
48 | /* check for overstep */ | |
49 | if (out[i] != (unsigned char)~ref[i]) { | |
50 | fprintf(stderr, "CBC output overstep@%d\n", i); | |
51 | return 1; | |
52 | } | |
53 | len += BIO_read(b, out + len, sizeof(out) - len); | |
54 | BIO_free_all(b); | |
55 | ||
56 | if (len != lref || memcmp(out, ref, len)) { | |
57 | fprintf(stderr, "CBC output mismatch@%d\n", i); | |
58 | return 2; | |
59 | } | |
60 | } | |
61 | ||
62 | /* perform small-chunk operations and compare to reference */ | |
63 | for (i = 1; i < lref / 2; i++) { | |
64 | int delta; | |
65 | ||
66 | b = BIO_new(BIO_f_cipher()); | |
67 | if (!BIO_set_cipher(b, EVP_aes_128_cbc(), key, NULL, 0)) | |
68 | return -1; | |
69 | BIO_push(b, BIO_new_mem_buf(inp, sizeof(inp))); | |
70 | memset(out, 0, sizeof(out)); | |
71 | for (len = 0; (delta = BIO_read(b, out + len, i)); ) { | |
72 | len += delta; | |
73 | } | |
74 | BIO_free_all(b); | |
75 | ||
76 | if (len != lref || memcmp(out, ref, len)) { | |
77 | fprintf(stderr, "CBC output mismatch@%d\n", i); | |
78 | return 3; | |
79 | } | |
80 | } | |
81 | ||
82 | /* | |
83 | * Exercise CTR cipher | |
84 | */ | |
85 | ||
86 | /* reference output for single-chunk operation */ | |
87 | b = BIO_new(BIO_f_cipher()); | |
61884b81 | 88 | if (!BIO_set_cipher(b, EVP_aes_128_ctr(), key, NULL, 0)) |
e6ed2b91 AP |
89 | return -1; |
90 | BIO_push(b, BIO_new_mem_buf(inp, sizeof(inp))); | |
91 | lref = BIO_read(b, ref, sizeof(ref)); | |
92 | BIO_free_all(b); | |
93 | ||
94 | /* perform split operations and compare to reference */ | |
95 | for (i = 1; i < lref; i++) { | |
96 | b = BIO_new(BIO_f_cipher()); | |
61884b81 | 97 | if (!BIO_set_cipher(b, EVP_aes_128_ctr(), key, NULL, 0)) |
e6ed2b91 AP |
98 | return -1; |
99 | BIO_push(b, BIO_new_mem_buf(inp, sizeof(inp))); | |
100 | memset(out, 0, sizeof(out)); | |
101 | out[i] = ~ref[i]; | |
102 | len = BIO_read(b, out, i); | |
103 | /* check for overstep */ | |
104 | if (out[i] != (unsigned char)~ref[i]) { | |
105 | fprintf(stderr, "CTR output overstep@%d\n", i); | |
106 | return 4; | |
107 | } | |
108 | len += BIO_read(b, out + len, sizeof(out) - len); | |
109 | BIO_free_all(b); | |
110 | ||
111 | if (len != lref || memcmp(out, ref, len)) { | |
112 | fprintf(stderr, "CTR output mismatch@%d\n", i); | |
113 | return 5; | |
114 | } | |
115 | } | |
116 | ||
117 | /* perform small-chunk operations and compare to reference */ | |
118 | for (i = 1; i < lref / 2; i++) { | |
119 | int delta; | |
120 | ||
121 | b = BIO_new(BIO_f_cipher()); | |
61884b81 | 122 | if (!BIO_set_cipher(b, EVP_aes_128_ctr(), key, NULL, 0)) |
e6ed2b91 AP |
123 | return -1; |
124 | BIO_push(b, BIO_new_mem_buf(inp, sizeof(inp))); | |
125 | memset(out, 0, sizeof(out)); | |
126 | for (len = 0; (delta = BIO_read(b, out + len, i)); ) { | |
127 | len += delta; | |
128 | } | |
129 | BIO_free_all(b); | |
130 | ||
131 | if (len != lref || memcmp(out, ref, len)) { | |
132 | fprintf(stderr, "CTR output mismatch@%d\n", i); | |
133 | return 6; | |
134 | } | |
135 | } | |
136 | ||
137 | return 0; | |
138 | } |