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9e200689 RS |
1 | /* |
2 | * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
5e73e6ba | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
9e200689 RS |
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 | ||
0f113f3e MC |
10 | /* |
11 | * Simple AES CCM test program, uses the same NIST data used for the FIPS | |
e942c154 DSH |
12 | * self test but uses the application level EVP APIs. |
13 | */ | |
14 | #include <stdio.h> | |
15 | #include <openssl/bio.h> | |
16 | #include <openssl/evp.h> | |
17 | ||
18 | /* AES-CCM test data from NIST public test vectors */ | |
19 | ||
20 | static const unsigned char ccm_key[] = { | |
0f113f3e MC |
21 | 0xce, 0xb0, 0x09, 0xae, 0xa4, 0x45, 0x44, 0x51, 0xfe, 0xad, 0xf0, 0xe6, |
22 | 0xb3, 0x6f, 0x45, 0x55, 0x5d, 0xd0, 0x47, 0x23, 0xba, 0xa4, 0x48, 0xe8 | |
e942c154 DSH |
23 | }; |
24 | ||
25 | static const unsigned char ccm_nonce[] = { | |
0f113f3e | 26 | 0x76, 0x40, 0x43, 0xc4, 0x94, 0x60, 0xb7 |
e942c154 DSH |
27 | }; |
28 | ||
29 | static const unsigned char ccm_adata[] = { | |
0f113f3e MC |
30 | 0x6e, 0x80, 0xdd, 0x7f, 0x1b, 0xad, 0xf3, 0xa1, 0xc9, 0xab, 0x25, 0xc7, |
31 | 0x5f, 0x10, 0xbd, 0xe7, 0x8c, 0x23, 0xfa, 0x0e, 0xb8, 0xf9, 0xaa, 0xa5, | |
32 | 0x3a, 0xde, 0xfb, 0xf4, 0xcb, 0xf7, 0x8f, 0xe4 | |
e942c154 DSH |
33 | }; |
34 | ||
35 | static const unsigned char ccm_pt[] = { | |
0f113f3e MC |
36 | 0xc8, 0xd2, 0x75, 0xf9, 0x19, 0xe1, 0x7d, 0x7f, 0xe6, 0x9c, 0x2a, 0x1f, |
37 | 0x58, 0x93, 0x9d, 0xfe, 0x4d, 0x40, 0x37, 0x91, 0xb5, 0xdf, 0x13, 0x10 | |
e942c154 DSH |
38 | }; |
39 | ||
40 | static const unsigned char ccm_ct[] = { | |
0f113f3e MC |
41 | 0x8a, 0x0f, 0x3d, 0x82, 0x29, 0xe4, 0x8e, 0x74, 0x87, 0xfd, 0x95, 0xa2, |
42 | 0x8a, 0xd3, 0x92, 0xc8, 0x0b, 0x36, 0x81, 0xd4, 0xfb, 0xc7, 0xbb, 0xfd | |
e942c154 DSH |
43 | }; |
44 | ||
45 | static const unsigned char ccm_tag[] = { | |
0f113f3e MC |
46 | 0x2d, 0xd6, 0xef, 0x1c, 0x45, 0xd4, 0xcc, 0xb7, 0x23, 0xdc, 0x07, 0x44, |
47 | 0x14, 0xdb, 0x50, 0x6d | |
e942c154 DSH |
48 | }; |
49 | ||
50 | void aes_ccm_encrypt(void) | |
0f113f3e MC |
51 | { |
52 | EVP_CIPHER_CTX *ctx; | |
53 | int outlen, tmplen; | |
54 | unsigned char outbuf[1024]; | |
55 | printf("AES CCM Encrypt:\n"); | |
56 | printf("Plaintext:\n"); | |
57 | BIO_dump_fp(stdout, ccm_pt, sizeof(ccm_pt)); | |
58 | ctx = EVP_CIPHER_CTX_new(); | |
59 | /* Set cipher type and mode */ | |
60 | EVP_EncryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL); | |
61 | /* Set nonce length if default 96 bits is not appropriate */ | |
e640fa02 MC |
62 | EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(ccm_nonce), |
63 | NULL); | |
0f113f3e | 64 | /* Set tag length */ |
e640fa02 | 65 | EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(ccm_tag), NULL); |
0f113f3e MC |
66 | /* Initialise key and IV */ |
67 | EVP_EncryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce); | |
68 | /* Set plaintext length: only needed if AAD is used */ | |
69 | EVP_EncryptUpdate(ctx, NULL, &outlen, NULL, sizeof(ccm_pt)); | |
70 | /* Zero or one call to specify any AAD */ | |
71 | EVP_EncryptUpdate(ctx, NULL, &outlen, ccm_adata, sizeof(ccm_adata)); | |
72 | /* Encrypt plaintext: can only be called once */ | |
73 | EVP_EncryptUpdate(ctx, outbuf, &outlen, ccm_pt, sizeof(ccm_pt)); | |
74 | /* Output encrypted block */ | |
75 | printf("Ciphertext:\n"); | |
76 | BIO_dump_fp(stdout, outbuf, outlen); | |
77 | /* Finalise: note get no output for CCM */ | |
78 | EVP_EncryptFinal_ex(ctx, outbuf, &outlen); | |
79 | /* Get tag */ | |
e640fa02 | 80 | EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, outbuf); |
0f113f3e MC |
81 | /* Output tag */ |
82 | printf("Tag:\n"); | |
83 | BIO_dump_fp(stdout, outbuf, 16); | |
84 | EVP_CIPHER_CTX_free(ctx); | |
85 | } | |
e942c154 DSH |
86 | |
87 | void aes_ccm_decrypt(void) | |
0f113f3e MC |
88 | { |
89 | EVP_CIPHER_CTX *ctx; | |
90 | int outlen, tmplen, rv; | |
91 | unsigned char outbuf[1024]; | |
92 | printf("AES CCM Derypt:\n"); | |
93 | printf("Ciphertext:\n"); | |
94 | BIO_dump_fp(stdout, ccm_ct, sizeof(ccm_ct)); | |
95 | ctx = EVP_CIPHER_CTX_new(); | |
96 | /* Select cipher */ | |
97 | EVP_DecryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL); | |
98 | /* Set nonce length, omit for 96 bits */ | |
e640fa02 MC |
99 | EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(ccm_nonce), |
100 | NULL); | |
0f113f3e | 101 | /* Set expected tag value */ |
e640fa02 | 102 | EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, |
0f113f3e MC |
103 | sizeof(ccm_tag), (void *)ccm_tag); |
104 | /* Specify key and IV */ | |
105 | EVP_DecryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce); | |
106 | /* Set ciphertext length: only needed if we have AAD */ | |
107 | EVP_DecryptUpdate(ctx, NULL, &outlen, NULL, sizeof(ccm_ct)); | |
108 | /* Zero or one call to specify any AAD */ | |
109 | EVP_DecryptUpdate(ctx, NULL, &outlen, ccm_adata, sizeof(ccm_adata)); | |
110 | /* Decrypt plaintext, verify tag: can only be called once */ | |
111 | rv = EVP_DecryptUpdate(ctx, outbuf, &outlen, ccm_ct, sizeof(ccm_ct)); | |
112 | /* Output decrypted block: if tag verify failed we get nothing */ | |
113 | if (rv > 0) { | |
114 | printf("Plaintext:\n"); | |
115 | BIO_dump_fp(stdout, outbuf, outlen); | |
116 | } else | |
117 | printf("Plaintext not available: tag verify failed.\n"); | |
118 | EVP_CIPHER_CTX_free(ctx); | |
119 | } | |
e942c154 DSH |
120 | |
121 | int main(int argc, char **argv) | |
0f113f3e MC |
122 | { |
123 | aes_ccm_encrypt(); | |
124 | aes_ccm_decrypt(); | |
125 | } |