1 /*
2 * Copyright 2000-2023 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/opensslconf.h>
11
12 #include "apps.h"
13 #include "progs.h"
14 #include <string.h>
15 #include <openssl/err.h>
16 #include <openssl/pem.h>
17 #include <openssl/rsa.h>
18
19 #define RSA_SIGN 1
20 #define RSA_VERIFY 2
21 #define RSA_ENCRYPT 3
22 #define RSA_DECRYPT 4
23
24 #define KEY_PRIVKEY 1
25 #define KEY_PUBKEY 2
26 #define KEY_CERT 3
27
28 typedef enum OPTION_choice {
29 OPT_COMMON,
30 OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
31 OPT_RSA_RAW, OPT_OAEP, OPT_PKCS, OPT_X931,
32 OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
33 OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
34 OPT_R_ENUM, OPT_PROV_ENUM
35 } OPTION_CHOICE;
36
37 const OPTIONS rsautl_options[] = {
38 OPT_SECTION("General"),
39 {"help", OPT_HELP, '-', "Display this summary"},
40 {"sign", OPT_SIGN, '-', "Sign with private key"},
41 {"verify", OPT_VERIFY, '-', "Verify with public key"},
42 {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
43 {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
44 #ifndef OPENSSL_NO_ENGINE
45 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
46 #endif
47
48 OPT_SECTION("Input"),
49 {"in", OPT_IN, '<', "Input file"},
50 {"inkey", OPT_INKEY, 's', "Input key, by default an RSA private key"},
51 {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
52 {"pubin", OPT_PUBIN, '-', "Input key is an RSA public pkey"},
53 {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
54 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
55 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
56
57 OPT_SECTION("Output"),
58 {"out", OPT_OUT, '>', "Output file"},
59 {"raw", OPT_RSA_RAW, '-', "Use no padding"},
60 {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
61 {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
62 {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
63 {"asn1parse", OPT_ASN1PARSE, '-',
64 "Run output through asn1parse; useful with -verify"},
65 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
66
67 OPT_R_OPTIONS,
68 OPT_PROV_OPTIONS,
69 {NULL}
70 };
71
rsautl_main(int argc,char ** argv)72 int rsautl_main(int argc, char **argv)
73 {
74 BIO *in = NULL, *out = NULL;
75 ENGINE *e = NULL;
76 EVP_PKEY *pkey = NULL;
77 EVP_PKEY_CTX *ctx = NULL;
78 X509 *x;
79 char *infile = NULL, *outfile = NULL, *keyfile = NULL;
80 char *passinarg = NULL, *passin = NULL, *prog;
81 char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
82 unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
83 size_t rsa_inlen, rsa_outlen = 0;
84 int keyformat = FORMAT_UNDEF, keysize, ret = 1, rv;
85 int hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
86 OPTION_CHOICE o;
87
88 prog = opt_init(argc, argv, rsautl_options);
89 while ((o = opt_next()) != OPT_EOF) {
90 switch (o) {
91 case OPT_EOF:
92 case OPT_ERR:
93 opthelp:
94 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
95 goto end;
96 case OPT_HELP:
97 opt_help(rsautl_options);
98 ret = 0;
99 goto end;
100 case OPT_KEYFORM:
101 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
102 goto opthelp;
103 break;
104 case OPT_IN:
105 infile = opt_arg();
106 break;
107 case OPT_OUT:
108 outfile = opt_arg();
109 break;
110 case OPT_ENGINE:
111 e = setup_engine(opt_arg(), 0);
112 break;
113 case OPT_ASN1PARSE:
114 asn1parse = 1;
115 break;
116 case OPT_HEXDUMP:
117 hexdump = 1;
118 break;
119 case OPT_RSA_RAW:
120 pad = RSA_NO_PADDING;
121 break;
122 case OPT_OAEP:
123 pad = RSA_PKCS1_OAEP_PADDING;
124 break;
125 case OPT_PKCS:
126 pad = RSA_PKCS1_PADDING;
127 break;
128 case OPT_X931:
129 pad = RSA_X931_PADDING;
130 break;
131 case OPT_SIGN:
132 rsa_mode = RSA_SIGN;
133 need_priv = 1;
134 break;
135 case OPT_VERIFY:
136 rsa_mode = RSA_VERIFY;
137 break;
138 case OPT_REV:
139 rev = 1;
140 break;
141 case OPT_ENCRYPT:
142 rsa_mode = RSA_ENCRYPT;
143 break;
144 case OPT_DECRYPT:
145 rsa_mode = RSA_DECRYPT;
146 need_priv = 1;
147 break;
148 case OPT_PUBIN:
149 key_type = KEY_PUBKEY;
150 break;
151 case OPT_CERTIN:
152 key_type = KEY_CERT;
153 break;
154 case OPT_INKEY:
155 keyfile = opt_arg();
156 break;
157 case OPT_PASSIN:
158 passinarg = opt_arg();
159 break;
160 case OPT_R_CASES:
161 if (!opt_rand(o))
162 goto end;
163 break;
164 case OPT_PROV_CASES:
165 if (!opt_provider(o))
166 goto end;
167 break;
168 }
169 }
170
171 /* No extra arguments. */
172 if (!opt_check_rest_arg(NULL))
173 goto opthelp;
174
175 if (!app_RAND_load())
176 goto end;
177
178 if (need_priv && (key_type != KEY_PRIVKEY)) {
179 BIO_printf(bio_err, "A private key is needed for this operation\n");
180 goto end;
181 }
182
183 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
184 BIO_printf(bio_err, "Error getting password\n");
185 goto end;
186 }
187
188 switch (key_type) {
189 case KEY_PRIVKEY:
190 pkey = load_key(keyfile, keyformat, 0, passin, e, "private key");
191 break;
192
193 case KEY_PUBKEY:
194 pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "public key");
195 break;
196
197 case KEY_CERT:
198 x = load_cert(keyfile, FORMAT_UNDEF, "Certificate");
199 if (x) {
200 pkey = X509_get_pubkey(x);
201 X509_free(x);
202 }
203 break;
204 }
205
206 if (pkey == NULL)
207 return 1;
208
209 in = bio_open_default(infile, 'r', FORMAT_BINARY);
210 if (in == NULL)
211 goto end;
212 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
213 if (out == NULL)
214 goto end;
215
216 keysize = EVP_PKEY_get_size(pkey);
217
218 rsa_in = app_malloc(keysize * 2, "hold rsa key");
219 rsa_out = app_malloc(keysize, "output rsa key");
220 rsa_outlen = keysize;
221
222 /* Read the input data */
223 rv = BIO_read(in, rsa_in, keysize * 2);
224 if (rv < 0) {
225 BIO_printf(bio_err, "Error reading input Data\n");
226 goto end;
227 }
228 rsa_inlen = rv;
229 if (rev) {
230 size_t i;
231 unsigned char ctmp;
232
233 for (i = 0; i < rsa_inlen / 2; i++) {
234 ctmp = rsa_in[i];
235 rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
236 rsa_in[rsa_inlen - 1 - i] = ctmp;
237 }
238 }
239
240 if ((ctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL)) == NULL)
241 goto end;
242
243 switch (rsa_mode) {
244 case RSA_VERIFY:
245 rv = EVP_PKEY_verify_recover_init(ctx) > 0
246 && EVP_PKEY_CTX_set_rsa_padding(ctx, pad) > 0
247 && EVP_PKEY_verify_recover(ctx, rsa_out, &rsa_outlen,
248 rsa_in, rsa_inlen) > 0;
249 break;
250 case RSA_SIGN:
251 rv = EVP_PKEY_sign_init(ctx) > 0
252 && EVP_PKEY_CTX_set_rsa_padding(ctx, pad) > 0
253 && EVP_PKEY_sign(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen) > 0;
254 break;
255 case RSA_ENCRYPT:
256 rv = EVP_PKEY_encrypt_init(ctx) > 0
257 && EVP_PKEY_CTX_set_rsa_padding(ctx, pad) > 0
258 && EVP_PKEY_encrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen) > 0;
259 break;
260 case RSA_DECRYPT:
261 rv = EVP_PKEY_decrypt_init(ctx) > 0
262 && EVP_PKEY_CTX_set_rsa_padding(ctx, pad) > 0
263 && EVP_PKEY_decrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen) > 0;
264 break;
265 }
266
267 if (!rv) {
268 BIO_printf(bio_err, "RSA operation error\n");
269 ERR_print_errors(bio_err);
270 goto end;
271 }
272 ret = 0;
273 if (asn1parse) {
274 if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
275 ERR_print_errors(bio_err);
276 }
277 } else if (hexdump) {
278 BIO_dump(out, (char *)rsa_out, rsa_outlen);
279 } else {
280 BIO_write(out, rsa_out, rsa_outlen);
281 }
282 end:
283 EVP_PKEY_CTX_free(ctx);
284 EVP_PKEY_free(pkey);
285 release_engine(e);
286 BIO_free(in);
287 BIO_free_all(out);
288 OPENSSL_free(rsa_in);
289 OPENSSL_free(rsa_out);
290 OPENSSL_free(passin);
291 return ret;
292 }
293
