xref: /openssl/demos/pkey/dsa.inc (revision de116410)
1/*-
2 * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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
10#include <openssl/pem.h>
11#include <openssl/core_names.h>
12
13/* Raw DSA params for P, Q and G */
14static const unsigned char dsa_p[] = {
15    0xa2, 0x9b, 0x88, 0x72, 0xce, 0x8b, 0x84, 0x23,
16    0xb7, 0xd5, 0xd2, 0x1d, 0x4b, 0x02, 0xf5, 0x7e,
17    0x03, 0xe9, 0xe6, 0xb8, 0xa2, 0x58, 0xdc, 0x16,
18    0x61, 0x1b, 0xa0, 0x98, 0xab, 0x54, 0x34, 0x15,
19    0xe4, 0x15, 0xf1, 0x56, 0x99, 0x7a, 0x3e, 0xe2,
20    0x36, 0x65, 0x8f, 0xa0, 0x93, 0x26, 0x0d, 0xe3,
21    0xad, 0x42, 0x2e, 0x05, 0xe0, 0x46, 0xf9, 0xec,
22    0x29, 0x16, 0x1a, 0x37, 0x5f, 0x0e, 0xb4, 0xef,
23    0xfc, 0xef, 0x58, 0x28, 0x5c, 0x5d, 0x39, 0xed,
24    0x42, 0x5d, 0x7a, 0x62, 0xca, 0x12, 0x89, 0x6c,
25    0x4a, 0x92, 0xcb, 0x19, 0x46, 0xf2, 0x95, 0x2a,
26    0x48, 0x13, 0x3f, 0x07, 0xda, 0x36, 0x4d, 0x1b,
27    0xdf, 0x6b, 0x0f, 0x71, 0x39, 0x98, 0x3e, 0x69,
28    0x3c, 0x80, 0x05, 0x9b, 0x0e, 0xac, 0xd1, 0x47,
29    0x9b, 0xa9, 0xf2, 0x85, 0x77, 0x54, 0xed, 0xe7,
30    0x5f, 0x11, 0x2b, 0x07, 0xeb, 0xbf, 0x35, 0x34,
31    0x8b, 0xbf, 0x3e, 0x01, 0xe0, 0x2f, 0x2d, 0x47,
32    0x3d, 0xe3, 0x94, 0x53, 0xf9, 0x9d, 0xd2, 0x36,
33    0x75, 0x41, 0xca, 0xca, 0x3b, 0xa0, 0x11, 0x66,
34    0x34, 0x3d, 0x7b, 0x5b, 0x58, 0xa3, 0x7b, 0xd1,
35    0xb7, 0x52, 0x1d, 0xb2, 0xf1, 0x3b, 0x86, 0x70,
36    0x71, 0x32, 0xfe, 0x09, 0xf4, 0xcd, 0x09, 0xdc,
37    0x16, 0x18, 0xfa, 0x34, 0x01, 0xeb, 0xf9, 0xcc,
38    0x7b, 0x19, 0xfa, 0x94, 0xaa, 0x47, 0x20, 0x88,
39    0x13, 0x3d, 0x6c, 0xb2, 0xd3, 0x5c, 0x11, 0x79,
40    0xc8, 0xc8, 0xff, 0x36, 0x87, 0x58, 0xd5, 0x07,
41    0xd9, 0xf9, 0xa1, 0x7d, 0x46, 0xc1, 0x10, 0xfe,
42    0x31, 0x44, 0xce, 0x9b, 0x02, 0x2b, 0x42, 0xe4,
43    0x19, 0xeb, 0x4f, 0x53, 0x88, 0x61, 0x3b, 0xfc,
44    0x3e, 0x26, 0x24, 0x1a, 0x43, 0x2e, 0x87, 0x06,
45    0xbc, 0x58, 0xef, 0x76, 0x11, 0x72, 0x78, 0xde,
46    0xab, 0x6c, 0xf6, 0x92, 0x61, 0x82, 0x91, 0xb7
47};
48
49static const unsigned char dsa_q[] = {
50    0xa3, 0xbf, 0xd9, 0xab, 0x78, 0x84, 0x79, 0x4e,
51    0x38, 0x34, 0x50, 0xd5, 0x89, 0x1d, 0xc1, 0x8b,
52    0x65, 0x15, 0x7b, 0xdc, 0xfc, 0xda, 0xc5, 0x15,
53    0x18, 0x90, 0x28, 0x67
54};
55
56static const unsigned char dsa_g[] = {
57    0x68, 0x19, 0x27, 0x88, 0x69, 0xc7, 0xfd, 0x3d,
58    0x2d, 0x7b, 0x77, 0xf7, 0x7e, 0x81, 0x50, 0xd9,
59    0xad, 0x43, 0x3b, 0xea, 0x3b, 0xa8, 0x5e, 0xfc,
60    0x80, 0x41, 0x5a, 0xa3, 0x54, 0x5f, 0x78, 0xf7,
61    0x22, 0x96, 0xf0, 0x6c, 0xb1, 0x9c, 0xed, 0xa0,
62    0x6c, 0x94, 0xb0, 0x55, 0x1c, 0xfe, 0x6e, 0x6f,
63    0x86, 0x3e, 0x31, 0xd1, 0xde, 0x6e, 0xed, 0x7d,
64    0xab, 0x8b, 0x0c, 0x9d, 0xf2, 0x31, 0xe0, 0x84,
65    0x34, 0xd1, 0x18, 0x4f, 0x91, 0xd0, 0x33, 0x69,
66    0x6b, 0xb3, 0x82, 0xf8, 0x45, 0x5e, 0x98, 0x88,
67    0xf5, 0xd3, 0x1d, 0x47, 0x84, 0xec, 0x40, 0x12,
68    0x02, 0x46, 0xf4, 0xbe, 0xa6, 0x17, 0x94, 0xbb,
69    0xa5, 0x86, 0x6f, 0x09, 0x74, 0x64, 0x63, 0xbd,
70    0xf8, 0xe9, 0xe1, 0x08, 0xcd, 0x95, 0x29, 0xc3,
71    0xd0, 0xf6, 0xdf, 0x80, 0x31, 0x6e, 0x2e, 0x70,
72    0xaa, 0xeb, 0x1b, 0x26, 0xcd, 0xb8, 0xad, 0x97,
73    0xbc, 0x3d, 0x28, 0x7e, 0x0b, 0x8d, 0x61, 0x6c,
74    0x42, 0xe6, 0x5b, 0x87, 0xdb, 0x20, 0xde, 0xb7,
75    0x00, 0x5b, 0xc4, 0x16, 0x74, 0x7a, 0x64, 0x70,
76    0x14, 0x7a, 0x68, 0xa7, 0x82, 0x03, 0x88, 0xeb,
77    0xf4, 0x4d, 0x52, 0xe0, 0x62, 0x8a, 0xf9, 0xcf,
78    0x1b, 0x71, 0x66, 0xd0, 0x34, 0x65, 0xf3, 0x5a,
79    0xcc, 0x31, 0xb6, 0x11, 0x0c, 0x43, 0xda, 0xbc,
80    0x7c, 0x5d, 0x59, 0x1e, 0x67, 0x1e, 0xaf, 0x7c,
81    0x25, 0x2c, 0x1c, 0x14, 0x53, 0x36, 0xa1, 0xa4,
82    0xdd, 0xf1, 0x32, 0x44, 0xd5, 0x5e, 0x83, 0x56,
83    0x80, 0xca, 0xb2, 0x53, 0x3b, 0x82, 0xdf, 0x2e,
84    0xfe, 0x55, 0xec, 0x18, 0xc1, 0xe6, 0xcd, 0x00,
85    0x7b, 0xb0, 0x89, 0x75, 0x8b, 0xb1, 0x7c, 0x2c,
86    0xbe, 0x14, 0x44, 0x1b, 0xd0, 0x93, 0xae, 0x66,
87    0xe5, 0x97, 0x6d, 0x53, 0x73, 0x3f, 0x4f, 0xa3,
88    0x26, 0x97, 0x01, 0xd3, 0x1d, 0x23, 0xd4, 0x67
89};
90
91/* Helper function to retrieve and print a key BIGNUM field */
92static void print_bn(BIO *bio, const EVP_PKEY *pkey, const char *name)
93{
94    BIGNUM *bn = NULL;
95
96    if (EVP_PKEY_get_bn_param(pkey, name, &bn) == 0)
97        return;
98
99    BIO_printf(bio, "  %s = 0x", name);
100    BN_print(bio, bn);
101    BIO_printf(bio, "\n");
102    BN_clear_free(bn);
103}
104
105/*
106 * Print DSA key info
107 *
108 * This method shows how to extract DSA data from an EVP_PKEY.
109 * There are simpler ways to print using EVP_PKEY_print_XXXX().
110 */
111static int dsa_print_key(const EVP_PKEY *pkey, int keypair,
112                         OSSL_LIB_CTX *libctx, const char *propq)
113{
114
115    int rv = 0, gindex, counter;
116    BIO *bio = BIO_new_fp(stdout, BIO_NOCLOSE);
117    unsigned char seed[2048];
118    size_t seedlen;
119
120    if (bio == NULL)
121        return 0;
122
123    /* Output hexadecimal representations of the BIGNUM objects. */
124    BIO_printf(bio, "\nPublic values:\n");
125    print_bn(bio, pkey, OSSL_PKEY_PARAM_FFC_P);
126    print_bn(bio, pkey, OSSL_PKEY_PARAM_FFC_Q);
127    print_bn(bio, pkey, OSSL_PKEY_PARAM_FFC_G);
128
129    if (EVP_PKEY_get_octet_string_param(pkey, OSSL_PKEY_PARAM_FFC_SEED, seed,
130                                        sizeof(seed), &seedlen) > 0) {
131        BIO_printf(bio, "  %s\n", OSSL_PKEY_PARAM_FFC_SEED);
132        BIO_dump(bio, seed, seedlen);
133    }
134    if (EVP_PKEY_get_int_param(pkey, OSSL_PKEY_PARAM_FFC_GINDEX, &gindex) > 0) {
135        if (gindex != -1)
136            BIO_printf(bio, "  %s = %d\n", OSSL_PKEY_PARAM_FFC_GINDEX, gindex);
137    }
138    if (EVP_PKEY_get_int_param(pkey, OSSL_PKEY_PARAM_FFC_PCOUNTER, &counter) > 0) {
139        if (counter != -1)
140            BIO_printf(bio, "  %s = %d\n", OSSL_PKEY_PARAM_FFC_PCOUNTER, counter);
141    }
142
143    if (keypair) {
144        fprintf(stdout, "\nPrivate value:\n");
145        print_bn(bio, pkey, OSSL_PKEY_PARAM_PRIV_KEY);
146
147        /* Output a PEM encoding of the public key. */
148        if (PEM_write_bio_PUBKEY_ex(bio, pkey, libctx, propq) == 0) {
149            fprintf(stderr, "Failed to output PEM-encoded public key\n");
150            goto cleanup;
151        }
152
153        /*
154         * Output a PEM encoding of the private key. Please note that this output is
155         * not encrypted. You may wish to use the arguments to specify encryption of
156         * the key if you are storing it on disk. See PEM_write_bio_PrivateKey_ex(3).
157         */
158        if (PEM_write_bio_PrivateKey_ex(bio, pkey, NULL, NULL, 0, NULL, NULL, libctx, propq) == 0) {
159            fprintf(stderr, "Failed to output PEM-encoded private key\n");
160            goto cleanup;
161        }
162    } else {
163        if (PEM_write_bio_Parameters(bio, pkey) == 0) {
164            fprintf(stderr, "Failed to output PEM-encoded params\n");
165            goto cleanup;
166        }
167    }
168    rv = 1;
169cleanup:
170    BIO_free(bio);
171    return rv;
172}
173