Coverage Report

Created: 2024-07-27 06:39

/src/openssl31/providers/implementations/signature/rsa_sig.c
Line
Count
Source (jump to first uncovered line)
1
/*
2
 * Copyright 2019-2023 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
/*
11
 * RSA low level APIs are deprecated for public use, but still ok for
12
 * internal use.
13
 */
14
#include "internal/deprecated.h"
15
16
#include <string.h>
17
#include <openssl/crypto.h>
18
#include <openssl/core_dispatch.h>
19
#include <openssl/core_names.h>
20
#include <openssl/err.h>
21
#include <openssl/rsa.h>
22
#include <openssl/params.h>
23
#include <openssl/evp.h>
24
#include <openssl/proverr.h>
25
#include "internal/cryptlib.h"
26
#include "internal/nelem.h"
27
#include "internal/sizes.h"
28
#include "crypto/rsa.h"
29
#include "prov/providercommon.h"
30
#include "prov/implementations.h"
31
#include "prov/provider_ctx.h"
32
#include "prov/der_rsa.h"
33
#include "prov/securitycheck.h"
34
35
0
#define RSA_DEFAULT_DIGEST_NAME OSSL_DIGEST_NAME_SHA1
36
37
static OSSL_FUNC_signature_newctx_fn rsa_newctx;
38
static OSSL_FUNC_signature_sign_init_fn rsa_sign_init;
39
static OSSL_FUNC_signature_verify_init_fn rsa_verify_init;
40
static OSSL_FUNC_signature_verify_recover_init_fn rsa_verify_recover_init;
41
static OSSL_FUNC_signature_sign_fn rsa_sign;
42
static OSSL_FUNC_signature_verify_fn rsa_verify;
43
static OSSL_FUNC_signature_verify_recover_fn rsa_verify_recover;
44
static OSSL_FUNC_signature_digest_sign_init_fn rsa_digest_sign_init;
45
static OSSL_FUNC_signature_digest_sign_update_fn rsa_digest_signverify_update;
46
static OSSL_FUNC_signature_digest_sign_final_fn rsa_digest_sign_final;
47
static OSSL_FUNC_signature_digest_verify_init_fn rsa_digest_verify_init;
48
static OSSL_FUNC_signature_digest_verify_update_fn rsa_digest_signverify_update;
49
static OSSL_FUNC_signature_digest_verify_final_fn rsa_digest_verify_final;
50
static OSSL_FUNC_signature_freectx_fn rsa_freectx;
51
static OSSL_FUNC_signature_dupctx_fn rsa_dupctx;
52
static OSSL_FUNC_signature_get_ctx_params_fn rsa_get_ctx_params;
53
static OSSL_FUNC_signature_gettable_ctx_params_fn rsa_gettable_ctx_params;
54
static OSSL_FUNC_signature_set_ctx_params_fn rsa_set_ctx_params;
55
static OSSL_FUNC_signature_settable_ctx_params_fn rsa_settable_ctx_params;
56
static OSSL_FUNC_signature_get_ctx_md_params_fn rsa_get_ctx_md_params;
57
static OSSL_FUNC_signature_gettable_ctx_md_params_fn rsa_gettable_ctx_md_params;
58
static OSSL_FUNC_signature_set_ctx_md_params_fn rsa_set_ctx_md_params;
59
static OSSL_FUNC_signature_settable_ctx_md_params_fn rsa_settable_ctx_md_params;
60
61
static OSSL_ITEM padding_item[] = {
62
    { RSA_PKCS1_PADDING,        OSSL_PKEY_RSA_PAD_MODE_PKCSV15 },
63
    { RSA_NO_PADDING,           OSSL_PKEY_RSA_PAD_MODE_NONE },
64
    { RSA_X931_PADDING,         OSSL_PKEY_RSA_PAD_MODE_X931 },
65
    { RSA_PKCS1_PSS_PADDING,    OSSL_PKEY_RSA_PAD_MODE_PSS },
66
    { 0,                        NULL     }
67
};
68
69
/*
70
 * What's passed as an actual key is defined by the KEYMGMT interface.
71
 * We happen to know that our KEYMGMT simply passes RSA structures, so
72
 * we use that here too.
73
 */
74
75
typedef struct {
76
    OSSL_LIB_CTX *libctx;
77
    char *propq;
78
    RSA *rsa;
79
    int operation;
80
81
    /*
82
     * Flag to determine if the hash function can be changed (1) or not (0)
83
     * Because it's dangerous to change during a DigestSign or DigestVerify
84
     * operation, this flag is cleared by their Init function, and set again
85
     * by their Final function.
86
     */
87
    unsigned int flag_allow_md : 1;
88
    unsigned int mgf1_md_set : 1;
89
90
    /* main digest */
91
    EVP_MD *md;
92
    EVP_MD_CTX *mdctx;
93
    int mdnid;
94
    char mdname[OSSL_MAX_NAME_SIZE]; /* Purely informational */
95
96
    /* RSA padding mode */
97
    int pad_mode;
98
    /* message digest for MGF1 */
99
    EVP_MD *mgf1_md;
100
    int mgf1_mdnid;
101
    char mgf1_mdname[OSSL_MAX_NAME_SIZE]; /* Purely informational */
102
    /* PSS salt length */
103
    int saltlen;
104
    /* Minimum salt length or -1 if no PSS parameter restriction */
105
    int min_saltlen;
106
107
    /* Temp buffer */
108
    unsigned char *tbuf;
109
110
} PROV_RSA_CTX;
111
112
/* True if PSS parameters are restricted */
113
37.7k
#define rsa_pss_restricted(prsactx) (prsactx->min_saltlen != -1)
114
115
static size_t rsa_get_md_size(const PROV_RSA_CTX *prsactx)
116
9.96k
{
117
9.96k
    if (prsactx->md != NULL)
118
9.96k
        return EVP_MD_get_size(prsactx->md);
119
0
    return 0;
120
9.96k
}
121
122
static int rsa_check_padding(const PROV_RSA_CTX *prsactx,
123
                             const char *mdname, const char *mgf1_mdname,
124
                             int mdnid)
125
81.8k
{
126
81.8k
    switch(prsactx->pad_mode) {
127
0
        case RSA_NO_PADDING:
128
0
            if (mdname != NULL || mdnid != NID_undef) {
129
0
                ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE);
130
0
                return 0;
131
0
            }
132
0
            break;
133
0
        case RSA_X931_PADDING:
134
0
            if (RSA_X931_hash_id(mdnid) == -1) {
135
0
                ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_X931_DIGEST);
136
0
                return 0;
137
0
            }
138
0
            break;
139
31.2k
        case RSA_PKCS1_PSS_PADDING:
140
31.2k
            if (rsa_pss_restricted(prsactx))
141
933
                if ((mdname != NULL && !EVP_MD_is_a(prsactx->md, mdname))
142
933
                    || (mgf1_mdname != NULL
143
916
                        && !EVP_MD_is_a(prsactx->mgf1_md, mgf1_mdname))) {
144
17
                    ERR_raise(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED);
145
17
                    return 0;
146
17
                }
147
31.2k
            break;
148
50.5k
        default:
149
50.5k
            break;
150
81.8k
    }
151
152
81.7k
    return 1;
153
81.8k
}
154
155
static int rsa_check_parameters(PROV_RSA_CTX *prsactx, int min_saltlen)
156
256
{
157
256
    if (prsactx->pad_mode == RSA_PKCS1_PSS_PADDING) {
158
256
        int max_saltlen;
159
160
        /* See if minimum salt length exceeds maximum possible */
161
256
        max_saltlen = RSA_size(prsactx->rsa) - EVP_MD_get_size(prsactx->md);
162
256
        if ((RSA_bits(prsactx->rsa) & 0x7) == 1)
163
12
            max_saltlen--;
164
256
        if (min_saltlen < 0 || min_saltlen > max_saltlen) {
165
10
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH);
166
10
            return 0;
167
10
        }
168
246
        prsactx->min_saltlen = min_saltlen;
169
246
    }
170
246
    return 1;
171
256
}
172
173
static void *rsa_newctx(void *provctx, const char *propq)
174
50.9k
{
175
50.9k
    PROV_RSA_CTX *prsactx = NULL;
176
50.9k
    char *propq_copy = NULL;
177
178
50.9k
    if (!ossl_prov_is_running())
179
0
        return NULL;
180
181
50.9k
    if ((prsactx = OPENSSL_zalloc(sizeof(PROV_RSA_CTX))) == NULL
182
50.9k
        || (propq != NULL
183
50.9k
            && (propq_copy = OPENSSL_strdup(propq)) == NULL)) {
184
0
        OPENSSL_free(prsactx);
185
0
        ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
186
0
        return NULL;
187
0
    }
188
189
50.9k
    prsactx->libctx = PROV_LIBCTX_OF(provctx);
190
50.9k
    prsactx->flag_allow_md = 1;
191
50.9k
    prsactx->propq = propq_copy;
192
    /* Maximum up to digest length for sign, auto for verify */
193
50.9k
    prsactx->saltlen = RSA_PSS_SALTLEN_AUTO_DIGEST_MAX;
194
50.9k
    prsactx->min_saltlen = -1;
195
50.9k
    return prsactx;
196
50.9k
}
197
198
static int rsa_pss_compute_saltlen(PROV_RSA_CTX *ctx)
199
0
{
200
0
    int saltlen = ctx->saltlen;
201
0
    int saltlenMax = -1;
202
203
    /* FIPS 186-4 section 5 "The RSA Digital Signature Algorithm", subsection
204
     * 5.5 "PKCS #1" says: "For RSASSA-PSS […] the length (in bytes) of the
205
     * salt (sLen) shall satisfy 0 <= sLen <= hLen, where hLen is the length of
206
     * the hash function output block (in bytes)."
207
     *
208
     * Provide a way to use at most the digest length, so that the default does
209
     * not violate FIPS 186-4. */
210
0
    if (saltlen == RSA_PSS_SALTLEN_DIGEST) {
211
0
        saltlen = EVP_MD_get_size(ctx->md);
212
0
    } else if (saltlen == RSA_PSS_SALTLEN_AUTO_DIGEST_MAX) {
213
0
        saltlen = RSA_PSS_SALTLEN_MAX;
214
0
        saltlenMax = EVP_MD_get_size(ctx->md);
215
0
    }
216
0
    if (saltlen == RSA_PSS_SALTLEN_MAX || saltlen == RSA_PSS_SALTLEN_AUTO) {
217
0
        saltlen = RSA_size(ctx->rsa) - EVP_MD_get_size(ctx->md) - 2;
218
0
        if ((RSA_bits(ctx->rsa) & 0x7) == 1)
219
0
            saltlen--;
220
0
        if (saltlenMax >= 0 && saltlen > saltlenMax)
221
0
            saltlen = saltlenMax;
222
0
    }
223
0
    if (saltlen < 0) {
224
0
        ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
225
0
        return -1;
226
0
    } else if (saltlen < ctx->min_saltlen) {
227
0
        ERR_raise_data(ERR_LIB_PROV, PROV_R_PSS_SALTLEN_TOO_SMALL,
228
0
                       "minimum salt length: %d, actual salt length: %d",
229
0
                       ctx->min_saltlen, saltlen);
230
0
        return -1;
231
0
    }
232
0
    return saltlen;
233
0
}
234
235
static unsigned char *rsa_generate_signature_aid(PROV_RSA_CTX *ctx,
236
                                                 unsigned char *aid_buf,
237
                                                 size_t buf_len,
238
                                                 size_t *aid_len)
239
0
{
240
0
    WPACKET pkt;
241
0
    unsigned char *aid = NULL;
242
0
    int saltlen;
243
0
    RSA_PSS_PARAMS_30 pss_params;
244
0
    int ret;
245
246
0
    if (!WPACKET_init_der(&pkt, aid_buf, buf_len)) {
247
0
        ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
248
0
        return NULL;
249
0
    }
250
251
0
    switch(ctx->pad_mode) {
252
0
    case RSA_PKCS1_PADDING:
253
0
        ret = ossl_DER_w_algorithmIdentifier_MDWithRSAEncryption(&pkt, -1,
254
0
                                                                 ctx->mdnid);
255
256
0
        if (ret > 0) {
257
0
            break;
258
0
        } else if (ret == 0) {
259
0
            ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
260
0
            goto cleanup;
261
0
        }
262
0
        ERR_raise_data(ERR_LIB_PROV, ERR_R_UNSUPPORTED,
263
0
                       "Algorithm ID generation - md NID: %d",
264
0
                       ctx->mdnid);
265
0
        goto cleanup;
266
0
    case RSA_PKCS1_PSS_PADDING:
267
0
        saltlen = rsa_pss_compute_saltlen(ctx);
268
0
        if (saltlen < 0)
269
0
            goto cleanup;
270
0
        if (!ossl_rsa_pss_params_30_set_defaults(&pss_params)
271
0
            || !ossl_rsa_pss_params_30_set_hashalg(&pss_params, ctx->mdnid)
272
0
            || !ossl_rsa_pss_params_30_set_maskgenhashalg(&pss_params,
273
0
                                                          ctx->mgf1_mdnid)
274
0
            || !ossl_rsa_pss_params_30_set_saltlen(&pss_params, saltlen)
275
0
            || !ossl_DER_w_algorithmIdentifier_RSA_PSS(&pkt, -1,
276
0
                                                       RSA_FLAG_TYPE_RSASSAPSS,
277
0
                                                       &pss_params)) {
278
0
            ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
279
0
            goto cleanup;
280
0
        }
281
0
        break;
282
0
    default:
283
0
        ERR_raise_data(ERR_LIB_PROV, ERR_R_UNSUPPORTED,
284
0
                       "Algorithm ID generation - pad mode: %d",
285
0
                       ctx->pad_mode);
286
0
        goto cleanup;
287
0
    }
288
0
    if (WPACKET_finish(&pkt)) {
289
0
        WPACKET_get_total_written(&pkt, aid_len);
290
0
        aid = WPACKET_get_curr(&pkt);
291
0
    }
292
0
 cleanup:
293
0
    WPACKET_cleanup(&pkt);
294
0
    return aid;
295
0
}
296
297
static int rsa_setup_md(PROV_RSA_CTX *ctx, const char *mdname,
298
                        const char *mdprops)
299
35.7k
{
300
35.7k
    if (mdprops == NULL)
301
35.7k
        mdprops = ctx->propq;
302
303
35.7k
    if (mdname != NULL) {
304
35.7k
        EVP_MD *md = EVP_MD_fetch(ctx->libctx, mdname, mdprops);
305
35.7k
        int sha1_allowed = (ctx->operation != EVP_PKEY_OP_SIGN);
306
35.7k
        int md_nid = ossl_digest_rsa_sign_get_md_nid(ctx->libctx, md,
307
35.7k
                                                     sha1_allowed);
308
35.7k
        size_t mdname_len = strlen(mdname);
309
310
35.7k
        if (md == NULL
311
35.7k
            || md_nid <= 0
312
35.7k
            || !rsa_check_padding(ctx, mdname, NULL, md_nid)
313
35.7k
            || mdname_len >= sizeof(ctx->mdname)) {
314
59
            if (md == NULL)
315
48
                ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
316
48
                               "%s could not be fetched", mdname);
317
59
            if (md_nid <= 0)
318
48
                ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED,
319
48
                               "digest=%s", mdname);
320
59
            if (mdname_len >= sizeof(ctx->mdname))
321
0
                ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
322
0
                               "%s exceeds name buffer length", mdname);
323
59
            EVP_MD_free(md);
324
59
            return 0;
325
59
        }
326
327
35.6k
        if (!ctx->flag_allow_md) {
328
0
            if (ctx->mdname[0] != '\0' && !EVP_MD_is_a(md, ctx->mdname)) {
329
0
                ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED,
330
0
                               "digest %s != %s", mdname, ctx->mdname);
331
0
                EVP_MD_free(md);
332
0
                return 0;
333
0
            }
334
0
            EVP_MD_free(md);
335
0
            return 1;
336
0
        }
337
338
35.6k
        if (!ctx->mgf1_md_set) {
339
35.4k
            if (!EVP_MD_up_ref(md)) {
340
0
                EVP_MD_free(md);
341
0
                return 0;
342
0
            }
343
35.4k
            EVP_MD_free(ctx->mgf1_md);
344
35.4k
            ctx->mgf1_md = md;
345
35.4k
            ctx->mgf1_mdnid = md_nid;
346
35.4k
            OPENSSL_strlcpy(ctx->mgf1_mdname, mdname, sizeof(ctx->mgf1_mdname));
347
35.4k
        }
348
349
35.6k
        EVP_MD_CTX_free(ctx->mdctx);
350
35.6k
        EVP_MD_free(ctx->md);
351
352
35.6k
        ctx->mdctx = NULL;
353
35.6k
        ctx->md = md;
354
35.6k
        ctx->mdnid = md_nid;
355
35.6k
        OPENSSL_strlcpy(ctx->mdname, mdname, sizeof(ctx->mdname));
356
35.6k
    }
357
358
35.6k
    return 1;
359
35.7k
}
360
361
static int rsa_setup_mgf1_md(PROV_RSA_CTX *ctx, const char *mdname,
362
                             const char *mdprops)
363
3.95k
{
364
3.95k
    size_t len;
365
3.95k
    EVP_MD *md = NULL;
366
3.95k
    int mdnid;
367
368
3.95k
    if (mdprops == NULL)
369
3.95k
        mdprops = ctx->propq;
370
371
3.95k
    if ((md = EVP_MD_fetch(ctx->libctx, mdname, mdprops)) == NULL) {
372
0
        ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
373
0
                       "%s could not be fetched", mdname);
374
0
        return 0;
375
0
    }
376
    /* The default for mgf1 is SHA1 - so allow SHA1 */
377
3.95k
    if ((mdnid = ossl_digest_rsa_sign_get_md_nid(ctx->libctx, md, 1)) <= 0
378
3.95k
        || !rsa_check_padding(ctx, NULL, mdname, mdnid)) {
379
0
        if (mdnid <= 0)
380
0
            ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED,
381
0
                           "digest=%s", mdname);
382
0
        EVP_MD_free(md);
383
0
        return 0;
384
0
    }
385
3.95k
    len = OPENSSL_strlcpy(ctx->mgf1_mdname, mdname, sizeof(ctx->mgf1_mdname));
386
3.95k
    if (len >= sizeof(ctx->mgf1_mdname)) {
387
0
        ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
388
0
                       "%s exceeds name buffer length", mdname);
389
0
        EVP_MD_free(md);
390
0
        return 0;
391
0
    }
392
393
3.95k
    EVP_MD_free(ctx->mgf1_md);
394
3.95k
    ctx->mgf1_md = md;
395
3.95k
    ctx->mgf1_mdnid = mdnid;
396
3.95k
    ctx->mgf1_md_set = 1;
397
3.95k
    return 1;
398
3.95k
}
399
400
static int rsa_signverify_init(void *vprsactx, void *vrsa,
401
                               const OSSL_PARAM params[], int operation)
402
35.7k
{
403
35.7k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
404
405
35.7k
    if (!ossl_prov_is_running() || prsactx == NULL)
406
0
        return 0;
407
408
35.7k
    if (vrsa == NULL && prsactx->rsa == NULL) {
409
0
        ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
410
0
        return 0;
411
0
    }
412
413
35.7k
    if (vrsa != NULL) {
414
35.7k
        if (!ossl_rsa_check_key(prsactx->libctx, vrsa, operation))
415
0
            return 0;
416
417
35.7k
        if (!RSA_up_ref(vrsa))
418
0
            return 0;
419
35.7k
        RSA_free(prsactx->rsa);
420
35.7k
        prsactx->rsa = vrsa;
421
35.7k
    }
422
423
35.7k
    prsactx->operation = operation;
424
425
    /* Maximize up to digest length for sign, auto for verify */
426
35.7k
    prsactx->saltlen = RSA_PSS_SALTLEN_AUTO_DIGEST_MAX;
427
35.7k
    prsactx->min_saltlen = -1;
428
429
35.7k
    switch (RSA_test_flags(prsactx->rsa, RSA_FLAG_TYPE_MASK)) {
430
35.4k
    case RSA_FLAG_TYPE_RSA:
431
35.4k
        prsactx->pad_mode = RSA_PKCS1_PADDING;
432
35.4k
        break;
433
240
    case RSA_FLAG_TYPE_RSASSAPSS:
434
240
        prsactx->pad_mode = RSA_PKCS1_PSS_PADDING;
435
436
240
        {
437
240
            const RSA_PSS_PARAMS_30 *pss =
438
240
                ossl_rsa_get0_pss_params_30(prsactx->rsa);
439
440
240
            if (!ossl_rsa_pss_params_30_is_unrestricted(pss)) {
441
240
                int md_nid = ossl_rsa_pss_params_30_hashalg(pss);
442
240
                int mgf1md_nid = ossl_rsa_pss_params_30_maskgenhashalg(pss);
443
240
                int min_saltlen = ossl_rsa_pss_params_30_saltlen(pss);
444
240
                const char *mdname, *mgf1mdname;
445
240
                size_t len;
446
447
240
                mdname = ossl_rsa_oaeppss_nid2name(md_nid);
448
240
                mgf1mdname = ossl_rsa_oaeppss_nid2name(mgf1md_nid);
449
450
240
                if (mdname == NULL) {
451
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
452
0
                                   "PSS restrictions lack hash algorithm");
453
0
                    return 0;
454
0
                }
455
240
                if (mgf1mdname == NULL) {
456
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
457
0
                                   "PSS restrictions lack MGF1 hash algorithm");
458
0
                    return 0;
459
0
                }
460
461
240
                len = OPENSSL_strlcpy(prsactx->mdname, mdname,
462
240
                                      sizeof(prsactx->mdname));
463
240
                if (len >= sizeof(prsactx->mdname)) {
464
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
465
0
                                   "hash algorithm name too long");
466
0
                    return 0;
467
0
                }
468
240
                len = OPENSSL_strlcpy(prsactx->mgf1_mdname, mgf1mdname,
469
240
                                      sizeof(prsactx->mgf1_mdname));
470
240
                if (len >= sizeof(prsactx->mgf1_mdname)) {
471
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
472
0
                                   "MGF1 hash algorithm name too long");
473
0
                    return 0;
474
0
                }
475
240
                prsactx->saltlen = min_saltlen;
476
477
                /* call rsa_setup_mgf1_md before rsa_setup_md to avoid duplication */
478
240
                if (!rsa_setup_mgf1_md(prsactx, mgf1mdname, prsactx->propq)
479
240
                    || !rsa_setup_md(prsactx, mdname, prsactx->propq)
480
240
                    || !rsa_check_parameters(prsactx, min_saltlen))
481
7
                    return 0;
482
240
            }
483
240
        }
484
485
233
        break;
486
233
    default:
487
0
        ERR_raise(ERR_LIB_RSA, PROV_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
488
0
        return 0;
489
35.7k
    }
490
491
35.7k
    if (!rsa_set_ctx_params(prsactx, params))
492
0
        return 0;
493
494
35.7k
    return 1;
495
35.7k
}
496
497
static int setup_tbuf(PROV_RSA_CTX *ctx)
498
11.6k
{
499
11.6k
    if (ctx->tbuf != NULL)
500
0
        return 1;
501
11.6k
    if ((ctx->tbuf = OPENSSL_malloc(RSA_size(ctx->rsa))) == NULL) {
502
13
        ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
503
13
        return 0;
504
13
    }
505
11.6k
    return 1;
506
11.6k
}
507
508
static void clean_tbuf(PROV_RSA_CTX *ctx)
509
68.6k
{
510
68.6k
    if (ctx->tbuf != NULL)
511
12.4k
        OPENSSL_cleanse(ctx->tbuf, RSA_size(ctx->rsa));
512
68.6k
}
513
514
static void free_tbuf(PROV_RSA_CTX *ctx)
515
67.8k
{
516
67.8k
    clean_tbuf(ctx);
517
67.8k
    OPENSSL_free(ctx->tbuf);
518
67.8k
    ctx->tbuf = NULL;
519
67.8k
}
520
521
static int rsa_sign_init(void *vprsactx, void *vrsa, const OSSL_PARAM params[])
522
0
{
523
0
    if (!ossl_prov_is_running())
524
0
        return 0;
525
0
    return rsa_signverify_init(vprsactx, vrsa, params, EVP_PKEY_OP_SIGN);
526
0
}
527
528
static int rsa_sign(void *vprsactx, unsigned char *sig, size_t *siglen,
529
                    size_t sigsize, const unsigned char *tbs, size_t tbslen)
530
6.38k
{
531
6.38k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
532
6.38k
    int ret;
533
6.38k
    size_t rsasize = RSA_size(prsactx->rsa);
534
6.38k
    size_t mdsize = rsa_get_md_size(prsactx);
535
536
6.38k
    if (!ossl_prov_is_running())
537
0
        return 0;
538
539
6.38k
    if (sig == NULL) {
540
3.19k
        *siglen = rsasize;
541
3.19k
        return 1;
542
3.19k
    }
543
544
3.19k
    if (sigsize < rsasize) {
545
0
        ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_SIGNATURE_SIZE,
546
0
                       "is %zu, should be at least %zu", sigsize, rsasize);
547
0
        return 0;
548
0
    }
549
550
3.19k
    if (mdsize != 0) {
551
3.19k
        if (tbslen != mdsize) {
552
0
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH);
553
0
            return 0;
554
0
        }
555
556
3.19k
#ifndef FIPS_MODULE
557
3.19k
        if (EVP_MD_is_a(prsactx->md, OSSL_DIGEST_NAME_MDC2)) {
558
0
            unsigned int sltmp;
559
560
0
            if (prsactx->pad_mode != RSA_PKCS1_PADDING) {
561
0
                ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
562
0
                               "only PKCS#1 padding supported with MDC2");
563
0
                return 0;
564
0
            }
565
0
            ret = RSA_sign_ASN1_OCTET_STRING(0, tbs, tbslen, sig, &sltmp,
566
0
                                             prsactx->rsa);
567
568
0
            if (ret <= 0) {
569
0
                ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
570
0
                return 0;
571
0
            }
572
0
            ret = sltmp;
573
0
            goto end;
574
0
        }
575
3.19k
#endif
576
3.19k
        switch (prsactx->pad_mode) {
577
0
        case RSA_X931_PADDING:
578
0
            if ((size_t)RSA_size(prsactx->rsa) < tbslen + 1) {
579
0
                ERR_raise_data(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL,
580
0
                               "RSA key size = %d, expected minimum = %d",
581
0
                               RSA_size(prsactx->rsa), tbslen + 1);
582
0
                return 0;
583
0
            }
584
0
            if (!setup_tbuf(prsactx)) {
585
0
                ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
586
0
                return 0;
587
0
            }
588
0
            memcpy(prsactx->tbuf, tbs, tbslen);
589
0
            prsactx->tbuf[tbslen] = RSA_X931_hash_id(prsactx->mdnid);
590
0
            ret = RSA_private_encrypt(tbslen + 1, prsactx->tbuf,
591
0
                                      sig, prsactx->rsa, RSA_X931_PADDING);
592
0
            clean_tbuf(prsactx);
593
0
            break;
594
595
2.36k
        case RSA_PKCS1_PADDING:
596
2.36k
            {
597
2.36k
                unsigned int sltmp;
598
599
2.36k
                ret = RSA_sign(prsactx->mdnid, tbs, tbslen, sig, &sltmp,
600
2.36k
                               prsactx->rsa);
601
2.36k
                if (ret <= 0) {
602
0
                    ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
603
0
                    return 0;
604
0
                }
605
2.36k
                ret = sltmp;
606
2.36k
            }
607
0
            break;
608
609
826
        case RSA_PKCS1_PSS_PADDING:
610
            /* Check PSS restrictions */
611
826
            if (rsa_pss_restricted(prsactx)) {
612
0
                switch (prsactx->saltlen) {
613
0
                case RSA_PSS_SALTLEN_DIGEST:
614
0
                    if (prsactx->min_saltlen > EVP_MD_get_size(prsactx->md)) {
615
0
                        ERR_raise_data(ERR_LIB_PROV,
616
0
                                       PROV_R_PSS_SALTLEN_TOO_SMALL,
617
0
                                       "minimum salt length set to %d, "
618
0
                                       "but the digest only gives %d",
619
0
                                       prsactx->min_saltlen,
620
0
                                       EVP_MD_get_size(prsactx->md));
621
0
                        return 0;
622
0
                    }
623
                    /* FALLTHRU */
624
0
                default:
625
0
                    if (prsactx->saltlen >= 0
626
0
                        && prsactx->saltlen < prsactx->min_saltlen) {
627
0
                        ERR_raise_data(ERR_LIB_PROV,
628
0
                                       PROV_R_PSS_SALTLEN_TOO_SMALL,
629
0
                                       "minimum salt length set to %d, but the"
630
0
                                       "actual salt length is only set to %d",
631
0
                                       prsactx->min_saltlen,
632
0
                                       prsactx->saltlen);
633
0
                        return 0;
634
0
                    }
635
0
                    break;
636
0
                }
637
0
            }
638
826
            if (!setup_tbuf(prsactx))
639
0
                return 0;
640
826
            if (!RSA_padding_add_PKCS1_PSS_mgf1(prsactx->rsa,
641
826
                                                prsactx->tbuf, tbs,
642
826
                                                prsactx->md, prsactx->mgf1_md,
643
826
                                                prsactx->saltlen)) {
644
0
                ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
645
0
                return 0;
646
0
            }
647
826
            ret = RSA_private_encrypt(RSA_size(prsactx->rsa), prsactx->tbuf,
648
826
                                      sig, prsactx->rsa, RSA_NO_PADDING);
649
826
            clean_tbuf(prsactx);
650
826
            break;
651
652
0
        default:
653
0
            ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
654
0
                           "Only X.931, PKCS#1 v1.5 or PSS padding allowed");
655
0
            return 0;
656
3.19k
        }
657
3.19k
    } else {
658
0
        ret = RSA_private_encrypt(tbslen, tbs, sig, prsactx->rsa,
659
0
                                  prsactx->pad_mode);
660
0
    }
661
662
3.19k
#ifndef FIPS_MODULE
663
3.19k
 end:
664
3.19k
#endif
665
3.19k
    if (ret <= 0) {
666
0
        ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
667
0
        return 0;
668
0
    }
669
670
3.19k
    *siglen = ret;
671
3.19k
    return 1;
672
3.19k
}
673
674
static int rsa_verify_recover_init(void *vprsactx, void *vrsa,
675
                                   const OSSL_PARAM params[])
676
0
{
677
0
    if (!ossl_prov_is_running())
678
0
        return 0;
679
0
    return rsa_signverify_init(vprsactx, vrsa, params,
680
0
                               EVP_PKEY_OP_VERIFYRECOVER);
681
0
}
682
683
static int rsa_verify_recover(void *vprsactx,
684
                              unsigned char *rout,
685
                              size_t *routlen,
686
                              size_t routsize,
687
                              const unsigned char *sig,
688
                              size_t siglen)
689
0
{
690
0
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
691
0
    int ret;
692
693
0
    if (!ossl_prov_is_running())
694
0
        return 0;
695
696
0
    if (rout == NULL) {
697
0
        *routlen = RSA_size(prsactx->rsa);
698
0
        return 1;
699
0
    }
700
701
0
    if (prsactx->md != NULL) {
702
0
        switch (prsactx->pad_mode) {
703
0
        case RSA_X931_PADDING:
704
0
            if (!setup_tbuf(prsactx))
705
0
                return 0;
706
0
            ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf, prsactx->rsa,
707
0
                                     RSA_X931_PADDING);
708
0
            if (ret < 1) {
709
0
                ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
710
0
                return 0;
711
0
            }
712
0
            ret--;
713
0
            if (prsactx->tbuf[ret] != RSA_X931_hash_id(prsactx->mdnid)) {
714
0
                ERR_raise(ERR_LIB_PROV, PROV_R_ALGORITHM_MISMATCH);
715
0
                return 0;
716
0
            }
717
0
            if (ret != EVP_MD_get_size(prsactx->md)) {
718
0
                ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH,
719
0
                               "Should be %d, but got %d",
720
0
                               EVP_MD_get_size(prsactx->md), ret);
721
0
                return 0;
722
0
            }
723
724
0
            *routlen = ret;
725
0
            if (rout != prsactx->tbuf) {
726
0
                if (routsize < (size_t)ret) {
727
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL,
728
0
                                   "buffer size is %d, should be %d",
729
0
                                   routsize, ret);
730
0
                    return 0;
731
0
                }
732
0
                memcpy(rout, prsactx->tbuf, ret);
733
0
            }
734
0
            break;
735
736
0
        case RSA_PKCS1_PADDING:
737
0
            {
738
0
                size_t sltmp;
739
740
0
                ret = ossl_rsa_verify(prsactx->mdnid, NULL, 0, rout, &sltmp,
741
0
                                      sig, siglen, prsactx->rsa);
742
0
                if (ret <= 0) {
743
0
                    ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
744
0
                    return 0;
745
0
                }
746
0
                ret = sltmp;
747
0
            }
748
0
            break;
749
750
0
        default:
751
0
            ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
752
0
                           "Only X.931 or PKCS#1 v1.5 padding allowed");
753
0
            return 0;
754
0
        }
755
0
    } else {
756
0
        ret = RSA_public_decrypt(siglen, sig, rout, prsactx->rsa,
757
0
                                 prsactx->pad_mode);
758
0
        if (ret < 0) {
759
0
            ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
760
0
            return 0;
761
0
        }
762
0
    }
763
0
    *routlen = ret;
764
0
    return 1;
765
0
}
766
767
static int rsa_verify_init(void *vprsactx, void *vrsa,
768
                           const OSSL_PARAM params[])
769
0
{
770
0
    if (!ossl_prov_is_running())
771
0
        return 0;
772
0
    return rsa_signverify_init(vprsactx, vrsa, params, EVP_PKEY_OP_VERIFY);
773
0
}
774
775
static int rsa_verify(void *vprsactx, const unsigned char *sig, size_t siglen,
776
                      const unsigned char *tbs, size_t tbslen)
777
13.7k
{
778
13.7k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
779
13.7k
    size_t rslen;
780
781
13.7k
    if (!ossl_prov_is_running())
782
0
        return 0;
783
13.7k
    if (prsactx->md != NULL) {
784
13.7k
        switch (prsactx->pad_mode) {
785
2.93k
        case RSA_PKCS1_PADDING:
786
2.93k
            if (!RSA_verify(prsactx->mdnid, tbs, tbslen, sig, siglen,
787
2.93k
                            prsactx->rsa)) {
788
2.62k
                ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
789
2.62k
                return 0;
790
2.62k
            }
791
308
            return 1;
792
0
        case RSA_X931_PADDING:
793
0
            if (!setup_tbuf(prsactx))
794
0
                return 0;
795
0
            if (rsa_verify_recover(prsactx, prsactx->tbuf, &rslen, 0,
796
0
                                   sig, siglen) <= 0)
797
0
                return 0;
798
0
            break;
799
10.8k
        case RSA_PKCS1_PSS_PADDING:
800
10.8k
            {
801
10.8k
                int ret;
802
10.8k
                size_t mdsize;
803
804
                /*
805
                 * We need to check this for the RSA_verify_PKCS1_PSS_mgf1()
806
                 * call
807
                 */
808
10.8k
                mdsize = rsa_get_md_size(prsactx);
809
10.8k
                if (tbslen != mdsize) {
810
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH,
811
0
                                   "Should be %d, but got %d",
812
0
                                   mdsize, tbslen);
813
0
                    return 0;
814
0
                }
815
816
10.8k
                if (!setup_tbuf(prsactx))
817
13
                    return 0;
818
10.8k
                ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf,
819
10.8k
                                         prsactx->rsa, RSA_NO_PADDING);
820
10.8k
                if (ret <= 0) {
821
2.18k
                    ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
822
2.18k
                    return 0;
823
2.18k
                }
824
8.63k
                ret = RSA_verify_PKCS1_PSS_mgf1(prsactx->rsa, tbs,
825
8.63k
                                                prsactx->md, prsactx->mgf1_md,
826
8.63k
                                                prsactx->tbuf,
827
8.63k
                                                prsactx->saltlen);
828
8.63k
                if (ret <= 0) {
829
8.63k
                    ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
830
8.63k
                    return 0;
831
8.63k
                }
832
9
                return 1;
833
8.63k
            }
834
0
        default:
835
0
            ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
836
0
                           "Only X.931, PKCS#1 v1.5 or PSS padding allowed");
837
0
            return 0;
838
13.7k
        }
839
13.7k
    } else {
840
0
        int ret;
841
842
0
        if (!setup_tbuf(prsactx))
843
0
            return 0;
844
0
        ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf, prsactx->rsa,
845
0
                                 prsactx->pad_mode);
846
0
        if (ret <= 0) {
847
0
            ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
848
0
            return 0;
849
0
        }
850
0
        rslen = (size_t)ret;
851
0
    }
852
853
0
    if ((rslen != tbslen) || memcmp(tbs, prsactx->tbuf, rslen))
854
0
        return 0;
855
856
0
    return 1;
857
0
}
858
859
static int rsa_digest_signverify_init(void *vprsactx, const char *mdname,
860
                                      void *vrsa, const OSSL_PARAM params[],
861
                                      int operation)
862
50.9k
{
863
50.9k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
864
865
50.9k
    if (!ossl_prov_is_running())
866
0
        return 0;
867
868
50.9k
    if (!rsa_signverify_init(vprsactx, vrsa, params, operation))
869
10
        return 0;
870
871
50.9k
    if (mdname != NULL
872
        /* was rsa_setup_md already called in rsa_signverify_init()? */
873
50.9k
        && (mdname[0] == '\0' || OPENSSL_strcasecmp(prsactx->mdname, mdname) != 0)
874
50.9k
        && !rsa_setup_md(prsactx, mdname, prsactx->propq))
875
109
        return 0;
876
877
50.7k
    prsactx->flag_allow_md = 0;
878
879
50.7k
    if (prsactx->mdctx == NULL) {
880
50.7k
        prsactx->mdctx = EVP_MD_CTX_new();
881
50.7k
        if (prsactx->mdctx == NULL)
882
0
            goto error;
883
50.7k
    }
884
885
50.7k
    if (!EVP_DigestInit_ex2(prsactx->mdctx, prsactx->md, params))
886
0
        goto error;
887
888
50.7k
    return 1;
889
890
0
 error:
891
0
    EVP_MD_CTX_free(prsactx->mdctx);
892
0
    prsactx->mdctx = NULL;
893
0
    return 0;
894
50.7k
}
895
896
static int rsa_digest_signverify_update(void *vprsactx,
897
                                        const unsigned char *data,
898
                                        size_t datalen)
899
16.9k
{
900
16.9k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
901
902
16.9k
    if (prsactx == NULL || prsactx->mdctx == NULL)
903
0
        return 0;
904
905
16.9k
    return EVP_DigestUpdate(prsactx->mdctx, data, datalen);
906
16.9k
}
907
908
static int rsa_digest_sign_init(void *vprsactx, const char *mdname,
909
                                void *vrsa, const OSSL_PARAM params[])
910
37.0k
{
911
37.0k
    if (!ossl_prov_is_running())
912
0
        return 0;
913
37.0k
    return rsa_digest_signverify_init(vprsactx, mdname, vrsa,
914
37.0k
                                      params, EVP_PKEY_OP_SIGN);
915
37.0k
}
916
917
static int rsa_digest_sign_final(void *vprsactx, unsigned char *sig,
918
                                 size_t *siglen, size_t sigsize)
919
6.38k
{
920
6.38k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
921
6.38k
    unsigned char digest[EVP_MAX_MD_SIZE];
922
6.38k
    unsigned int dlen = 0;
923
924
6.38k
    if (!ossl_prov_is_running() || prsactx == NULL)
925
0
        return 0;
926
6.38k
    prsactx->flag_allow_md = 1;
927
6.38k
    if (prsactx->mdctx == NULL)
928
0
        return 0;
929
    /*
930
     * If sig is NULL then we're just finding out the sig size. Other fields
931
     * are ignored. Defer to rsa_sign.
932
     */
933
6.38k
    if (sig != NULL) {
934
        /*
935
         * The digests used here are all known (see rsa_get_md_nid()), so they
936
         * should not exceed the internal buffer size of EVP_MAX_MD_SIZE.
937
         */
938
3.19k
        if (!EVP_DigestFinal_ex(prsactx->mdctx, digest, &dlen))
939
0
            return 0;
940
3.19k
    }
941
942
6.38k
    return rsa_sign(vprsactx, sig, siglen, sigsize, digest, (size_t)dlen);
943
6.38k
}
944
945
static int rsa_digest_verify_init(void *vprsactx, const char *mdname,
946
                                  void *vrsa, const OSSL_PARAM params[])
947
13.8k
{
948
13.8k
    if (!ossl_prov_is_running())
949
0
        return 0;
950
13.8k
    return rsa_digest_signverify_init(vprsactx, mdname, vrsa,
951
13.8k
                                      params, EVP_PKEY_OP_VERIFY);
952
13.8k
}
953
954
int rsa_digest_verify_final(void *vprsactx, const unsigned char *sig,
955
                            size_t siglen)
956
13.7k
{
957
13.7k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
958
13.7k
    unsigned char digest[EVP_MAX_MD_SIZE];
959
13.7k
    unsigned int dlen = 0;
960
961
13.7k
    if (!ossl_prov_is_running())
962
0
        return 0;
963
964
13.7k
    if (prsactx == NULL)
965
0
        return 0;
966
13.7k
    prsactx->flag_allow_md = 1;
967
13.7k
    if (prsactx->mdctx == NULL)
968
0
        return 0;
969
970
    /*
971
     * The digests used here are all known (see rsa_get_md_nid()), so they
972
     * should not exceed the internal buffer size of EVP_MAX_MD_SIZE.
973
     */
974
13.7k
    if (!EVP_DigestFinal_ex(prsactx->mdctx, digest, &dlen))
975
0
        return 0;
976
977
13.7k
    return rsa_verify(vprsactx, sig, siglen, digest, (size_t)dlen);
978
13.7k
}
979
980
static void rsa_freectx(void *vprsactx)
981
67.8k
{
982
67.8k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
983
984
67.8k
    if (prsactx == NULL)
985
0
        return;
986
987
67.8k
    EVP_MD_CTX_free(prsactx->mdctx);
988
67.8k
    EVP_MD_free(prsactx->md);
989
67.8k
    EVP_MD_free(prsactx->mgf1_md);
990
67.8k
    OPENSSL_free(prsactx->propq);
991
67.8k
    free_tbuf(prsactx);
992
67.8k
    RSA_free(prsactx->rsa);
993
994
67.8k
    OPENSSL_clear_free(prsactx, sizeof(*prsactx));
995
67.8k
}
996
997
static void *rsa_dupctx(void *vprsactx)
998
16.9k
{
999
16.9k
    PROV_RSA_CTX *srcctx = (PROV_RSA_CTX *)vprsactx;
1000
16.9k
    PROV_RSA_CTX *dstctx;
1001
1002
16.9k
    if (!ossl_prov_is_running())
1003
0
        return NULL;
1004
1005
16.9k
    dstctx = OPENSSL_zalloc(sizeof(*srcctx));
1006
16.9k
    if (dstctx == NULL) {
1007
0
        ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
1008
0
        return NULL;
1009
0
    }
1010
1011
16.9k
    *dstctx = *srcctx;
1012
16.9k
    dstctx->rsa = NULL;
1013
16.9k
    dstctx->md = NULL;
1014
16.9k
    dstctx->mgf1_md = NULL;
1015
16.9k
    dstctx->mdctx = NULL;
1016
16.9k
    dstctx->tbuf = NULL;
1017
16.9k
    dstctx->propq = NULL;
1018
1019
16.9k
    if (srcctx->rsa != NULL && !RSA_up_ref(srcctx->rsa))
1020
0
        goto err;
1021
16.9k
    dstctx->rsa = srcctx->rsa;
1022
1023
16.9k
    if (srcctx->md != NULL && !EVP_MD_up_ref(srcctx->md))
1024
0
        goto err;
1025
16.9k
    dstctx->md = srcctx->md;
1026
1027
16.9k
    if (srcctx->mgf1_md != NULL && !EVP_MD_up_ref(srcctx->mgf1_md))
1028
0
        goto err;
1029
16.9k
    dstctx->mgf1_md = srcctx->mgf1_md;
1030
1031
16.9k
    if (srcctx->mdctx != NULL) {
1032
16.9k
        dstctx->mdctx = EVP_MD_CTX_new();
1033
16.9k
        if (dstctx->mdctx == NULL
1034
16.9k
                || !EVP_MD_CTX_copy_ex(dstctx->mdctx, srcctx->mdctx))
1035
0
            goto err;
1036
16.9k
    }
1037
1038
16.9k
    if (srcctx->propq != NULL) {
1039
0
        dstctx->propq = OPENSSL_strdup(srcctx->propq);
1040
0
        if (dstctx->propq == NULL)
1041
0
            goto err;
1042
0
    }
1043
1044
16.9k
    return dstctx;
1045
0
 err:
1046
0
    rsa_freectx(dstctx);
1047
0
    return NULL;
1048
16.9k
}
1049
1050
static int rsa_get_ctx_params(void *vprsactx, OSSL_PARAM *params)
1051
0
{
1052
0
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1053
0
    OSSL_PARAM *p;
1054
1055
0
    if (prsactx == NULL)
1056
0
        return 0;
1057
1058
0
    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_ALGORITHM_ID);
1059
0
    if (p != NULL) {
1060
        /* The Algorithm Identifier of the combined signature algorithm */
1061
0
        unsigned char aid_buf[128];
1062
0
        unsigned char *aid;
1063
0
        size_t  aid_len;
1064
1065
0
        aid = rsa_generate_signature_aid(prsactx, aid_buf,
1066
0
                                         sizeof(aid_buf), &aid_len);
1067
0
        if (aid == NULL || !OSSL_PARAM_set_octet_string(p, aid, aid_len))
1068
0
            return 0;
1069
0
    }
1070
1071
0
    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_PAD_MODE);
1072
0
    if (p != NULL)
1073
0
        switch (p->data_type) {
1074
0
        case OSSL_PARAM_INTEGER:
1075
0
            if (!OSSL_PARAM_set_int(p, prsactx->pad_mode))
1076
0
                return 0;
1077
0
            break;
1078
0
        case OSSL_PARAM_UTF8_STRING:
1079
0
            {
1080
0
                int i;
1081
0
                const char *word = NULL;
1082
1083
0
                for (i = 0; padding_item[i].id != 0; i++) {
1084
0
                    if (prsactx->pad_mode == (int)padding_item[i].id) {
1085
0
                        word = padding_item[i].ptr;
1086
0
                        break;
1087
0
                    }
1088
0
                }
1089
1090
0
                if (word != NULL) {
1091
0
                    if (!OSSL_PARAM_set_utf8_string(p, word))
1092
0
                        return 0;
1093
0
                } else {
1094
0
                    ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
1095
0
                }
1096
0
            }
1097
0
            break;
1098
0
        default:
1099
0
            return 0;
1100
0
        }
1101
1102
0
    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST);
1103
0
    if (p != NULL && !OSSL_PARAM_set_utf8_string(p, prsactx->mdname))
1104
0
        return 0;
1105
1106
0
    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_MGF1_DIGEST);
1107
0
    if (p != NULL && !OSSL_PARAM_set_utf8_string(p, prsactx->mgf1_mdname))
1108
0
        return 0;
1109
1110
0
    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_PSS_SALTLEN);
1111
0
    if (p != NULL) {
1112
0
        if (p->data_type == OSSL_PARAM_INTEGER) {
1113
0
            if (!OSSL_PARAM_set_int(p, prsactx->saltlen))
1114
0
                return 0;
1115
0
        } else if (p->data_type == OSSL_PARAM_UTF8_STRING) {
1116
0
            const char *value = NULL;
1117
1118
0
            switch (prsactx->saltlen) {
1119
0
            case RSA_PSS_SALTLEN_DIGEST:
1120
0
                value = OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST;
1121
0
                break;
1122
0
            case RSA_PSS_SALTLEN_MAX:
1123
0
                value = OSSL_PKEY_RSA_PSS_SALT_LEN_MAX;
1124
0
                break;
1125
0
            case RSA_PSS_SALTLEN_AUTO:
1126
0
                value = OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO;
1127
0
                break;
1128
0
            case RSA_PSS_SALTLEN_AUTO_DIGEST_MAX:
1129
0
                value = OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO_DIGEST_MAX;
1130
0
                break;
1131
0
            default:
1132
0
                {
1133
0
                    int len = BIO_snprintf(p->data, p->data_size, "%d",
1134
0
                                           prsactx->saltlen);
1135
1136
0
                    if (len <= 0)
1137
0
                        return 0;
1138
0
                    p->return_size = len;
1139
0
                    break;
1140
0
                }
1141
0
            }
1142
0
            if (value != NULL
1143
0
                && !OSSL_PARAM_set_utf8_string(p, value))
1144
0
                return 0;
1145
0
        }
1146
0
    }
1147
1148
0
    return 1;
1149
0
}
1150
1151
static const OSSL_PARAM known_gettable_ctx_params[] = {
1152
    OSSL_PARAM_octet_string(OSSL_SIGNATURE_PARAM_ALGORITHM_ID, NULL, 0),
1153
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0),
1154
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
1155
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0),
1156
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0),
1157
    OSSL_PARAM_END
1158
};
1159
1160
static const OSSL_PARAM *rsa_gettable_ctx_params(ossl_unused void *vprsactx,
1161
                                                 ossl_unused void *provctx)
1162
0
{
1163
0
    return known_gettable_ctx_params;
1164
0
}
1165
1166
static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
1167
36.5k
{
1168
36.5k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1169
36.5k
    const OSSL_PARAM *p;
1170
36.5k
    int pad_mode;
1171
36.5k
    int saltlen;
1172
36.5k
    char mdname[OSSL_MAX_NAME_SIZE] = "", *pmdname = NULL;
1173
36.5k
    char mdprops[OSSL_MAX_PROPQUERY_SIZE] = "", *pmdprops = NULL;
1174
36.5k
    char mgf1mdname[OSSL_MAX_NAME_SIZE] = "", *pmgf1mdname = NULL;
1175
36.5k
    char mgf1mdprops[OSSL_MAX_PROPQUERY_SIZE] = "", *pmgf1mdprops = NULL;
1176
1177
36.5k
    if (prsactx == NULL)
1178
0
        return 0;
1179
36.5k
    if (params == NULL)
1180
23.6k
        return 1;
1181
1182
12.9k
    pad_mode = prsactx->pad_mode;
1183
12.9k
    saltlen = prsactx->saltlen;
1184
1185
12.9k
    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST);
1186
12.9k
    if (p != NULL) {
1187
0
        const OSSL_PARAM *propsp =
1188
0
            OSSL_PARAM_locate_const(params,
1189
0
                                    OSSL_SIGNATURE_PARAM_PROPERTIES);
1190
1191
0
        pmdname = mdname;
1192
0
        if (!OSSL_PARAM_get_utf8_string(p, &pmdname, sizeof(mdname)))
1193
0
            return 0;
1194
1195
0
        if (propsp != NULL) {
1196
0
            pmdprops = mdprops;
1197
0
            if (!OSSL_PARAM_get_utf8_string(propsp,
1198
0
                                            &pmdprops, sizeof(mdprops)))
1199
0
                return 0;
1200
0
        }
1201
0
    }
1202
1203
12.9k
    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_PAD_MODE);
1204
12.9k
    if (p != NULL) {
1205
5.68k
        const char *err_extra_text = NULL;
1206
1207
5.68k
        switch (p->data_type) {
1208
5.68k
        case OSSL_PARAM_INTEGER: /* Support for legacy pad mode number */
1209
5.68k
            if (!OSSL_PARAM_get_int(p, &pad_mode))
1210
0
                return 0;
1211
5.68k
            break;
1212
5.68k
        case OSSL_PARAM_UTF8_STRING:
1213
0
            {
1214
0
                int i;
1215
1216
0
                if (p->data == NULL)
1217
0
                    return 0;
1218
1219
0
                for (i = 0; padding_item[i].id != 0; i++) {
1220
0
                    if (strcmp(p->data, padding_item[i].ptr) == 0) {
1221
0
                        pad_mode = padding_item[i].id;
1222
0
                        break;
1223
0
                    }
1224
0
                }
1225
0
            }
1226
0
            break;
1227
0
        default:
1228
0
            return 0;
1229
5.68k
        }
1230
1231
5.68k
        switch (pad_mode) {
1232
0
        case RSA_PKCS1_OAEP_PADDING:
1233
            /*
1234
             * OAEP padding is for asymmetric cipher only so is not compatible
1235
             * with signature use.
1236
             */
1237
0
            err_extra_text = "OAEP padding not allowed for signing / verifying";
1238
0
            goto bad_pad;
1239
5.68k
        case RSA_PKCS1_PSS_PADDING:
1240
5.68k
            if ((prsactx->operation
1241
5.68k
                 & (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY)) == 0) {
1242
0
                err_extra_text =
1243
0
                    "PSS padding only allowed for sign and verify operations";
1244
0
                goto bad_pad;
1245
0
            }
1246
5.68k
            break;
1247
5.68k
        case RSA_PKCS1_PADDING:
1248
0
            err_extra_text = "PKCS#1 padding not allowed with RSA-PSS";
1249
0
            goto cont;
1250
0
        case RSA_NO_PADDING:
1251
0
            err_extra_text = "No padding not allowed with RSA-PSS";
1252
0
            goto cont;
1253
0
        case RSA_X931_PADDING:
1254
0
            err_extra_text = "X.931 padding not allowed with RSA-PSS";
1255
0
        cont:
1256
0
            if (RSA_test_flags(prsactx->rsa,
1257
0
                               RSA_FLAG_TYPE_MASK) == RSA_FLAG_TYPE_RSA)
1258
0
                break;
1259
            /* FALLTHRU */
1260
0
        default:
1261
0
        bad_pad:
1262
0
            if (err_extra_text == NULL)
1263
0
                ERR_raise(ERR_LIB_PROV,
1264
0
                          PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
1265
0
            else
1266
0
                ERR_raise_data(ERR_LIB_PROV,
1267
0
                               PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE,
1268
0
                               err_extra_text);
1269
0
            return 0;
1270
5.68k
        }
1271
5.68k
    }
1272
1273
12.9k
    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_PSS_SALTLEN);
1274
12.9k
    if (p != NULL) {
1275
5.68k
        if (pad_mode != RSA_PKCS1_PSS_PADDING) {
1276
0
            ERR_raise_data(ERR_LIB_PROV, PROV_R_NOT_SUPPORTED,
1277
0
                           "PSS saltlen can only be specified if "
1278
0
                           "PSS padding has been specified first");
1279
0
            return 0;
1280
0
        }
1281
1282
5.68k
        switch (p->data_type) {
1283
0
        case OSSL_PARAM_INTEGER: /* Support for legacy pad mode number */
1284
0
            if (!OSSL_PARAM_get_int(p, &saltlen))
1285
0
                return 0;
1286
0
            break;
1287
5.68k
        case OSSL_PARAM_UTF8_STRING:
1288
5.68k
            if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST) == 0)
1289
4.12k
                saltlen = RSA_PSS_SALTLEN_DIGEST;
1290
1.56k
            else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_MAX) == 0)
1291
0
                saltlen = RSA_PSS_SALTLEN_MAX;
1292
1.56k
            else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO) == 0)
1293
0
                saltlen = RSA_PSS_SALTLEN_AUTO;
1294
1.56k
            else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO_DIGEST_MAX) == 0)
1295
0
                saltlen = RSA_PSS_SALTLEN_AUTO_DIGEST_MAX;
1296
1.56k
            else
1297
1.56k
                saltlen = atoi(p->data);
1298
5.68k
            break;
1299
0
        default:
1300
0
            return 0;
1301
5.68k
        }
1302
1303
        /*
1304
         * RSA_PSS_SALTLEN_AUTO_DIGEST_MAX seems curiously named in this check.
1305
         * Contrary to what it's name suggests, it's the currently lowest
1306
         * saltlen number possible.
1307
         */
1308
5.68k
        if (saltlen < RSA_PSS_SALTLEN_AUTO_DIGEST_MAX) {
1309
0
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH);
1310
0
            return 0;
1311
0
        }
1312
1313
5.68k
        if (rsa_pss_restricted(prsactx)) {
1314
7
            switch (saltlen) {
1315
0
            case RSA_PSS_SALTLEN_AUTO:
1316
0
            case RSA_PSS_SALTLEN_AUTO_DIGEST_MAX:
1317
0
                if (prsactx->operation == EVP_PKEY_OP_VERIFY) {
1318
0
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH,
1319
0
                                   "Cannot use autodetected salt length");
1320
0
                    return 0;
1321
0
                }
1322
0
                break;
1323
0
            case RSA_PSS_SALTLEN_DIGEST:
1324
0
                if (prsactx->min_saltlen > EVP_MD_get_size(prsactx->md)) {
1325
0
                    ERR_raise_data(ERR_LIB_PROV,
1326
0
                                   PROV_R_PSS_SALTLEN_TOO_SMALL,
1327
0
                                   "Should be more than %d, but would be "
1328
0
                                   "set to match digest size (%d)",
1329
0
                                   prsactx->min_saltlen,
1330
0
                                   EVP_MD_get_size(prsactx->md));
1331
0
                    return 0;
1332
0
                }
1333
0
                break;
1334
7
            default:
1335
7
                if (saltlen >= 0 && saltlen < prsactx->min_saltlen) {
1336
0
                    ERR_raise_data(ERR_LIB_PROV,
1337
0
                                   PROV_R_PSS_SALTLEN_TOO_SMALL,
1338
0
                                   "Should be more than %d, "
1339
0
                                   "but would be set to %d",
1340
0
                                   prsactx->min_saltlen, saltlen);
1341
0
                    return 0;
1342
0
                }
1343
7
            }
1344
7
        }
1345
5.68k
    }
1346
1347
12.9k
    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_MGF1_DIGEST);
1348
12.9k
    if (p != NULL) {
1349
1.56k
        const OSSL_PARAM *propsp =
1350
1.56k
            OSSL_PARAM_locate_const(params,
1351
1.56k
                                    OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES);
1352
1353
1.56k
        pmgf1mdname = mgf1mdname;
1354
1.56k
        if (!OSSL_PARAM_get_utf8_string(p, &pmgf1mdname, sizeof(mgf1mdname)))
1355
0
            return 0;
1356
1357
1.56k
        if (propsp != NULL) {
1358
0
            pmgf1mdprops = mgf1mdprops;
1359
0
            if (!OSSL_PARAM_get_utf8_string(propsp,
1360
0
                                            &pmgf1mdprops, sizeof(mgf1mdprops)))
1361
0
                return 0;
1362
0
        }
1363
1364
1.56k
        if (pad_mode != RSA_PKCS1_PSS_PADDING) {
1365
0
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_MGF1_MD);
1366
0
            return  0;
1367
0
        }
1368
1.56k
    }
1369
1370
12.9k
    prsactx->saltlen = saltlen;
1371
12.9k
    prsactx->pad_mode = pad_mode;
1372
1373
12.9k
    if (prsactx->md == NULL && pmdname == NULL
1374
12.9k
        && pad_mode == RSA_PKCS1_PSS_PADDING)
1375
0
        pmdname = RSA_DEFAULT_DIGEST_NAME;
1376
1377
12.9k
    if (pmgf1mdname != NULL
1378
12.9k
        && !rsa_setup_mgf1_md(prsactx, pmgf1mdname, pmgf1mdprops))
1379
0
        return 0;
1380
1381
12.9k
    if (pmdname != NULL) {
1382
0
        if (!rsa_setup_md(prsactx, pmdname, pmdprops))
1383
0
            return 0;
1384
12.9k
    } else {
1385
12.9k
        if (!rsa_check_padding(prsactx, NULL, NULL, prsactx->mdnid))
1386
0
            return 0;
1387
12.9k
    }
1388
12.9k
    return 1;
1389
12.9k
}
1390
1391
static const OSSL_PARAM settable_ctx_params[] = {
1392
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
1393
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PROPERTIES, NULL, 0),
1394
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0),
1395
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0),
1396
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES, NULL, 0),
1397
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0),
1398
    OSSL_PARAM_END
1399
};
1400
1401
static const OSSL_PARAM settable_ctx_params_no_digest[] = {
1402
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0),
1403
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0),
1404
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES, NULL, 0),
1405
    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0),
1406
    OSSL_PARAM_END
1407
};
1408
1409
static const OSSL_PARAM *rsa_settable_ctx_params(void *vprsactx,
1410
                                                 ossl_unused void *provctx)
1411
27.0k
{
1412
27.0k
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1413
1414
27.0k
    if (prsactx != NULL && !prsactx->flag_allow_md)
1415
27.0k
        return settable_ctx_params_no_digest;
1416
4
    return settable_ctx_params;
1417
27.0k
}
1418
1419
static int rsa_get_ctx_md_params(void *vprsactx, OSSL_PARAM *params)
1420
0
{
1421
0
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1422
1423
0
    if (prsactx->mdctx == NULL)
1424
0
        return 0;
1425
1426
0
    return EVP_MD_CTX_get_params(prsactx->mdctx, params);
1427
0
}
1428
1429
static const OSSL_PARAM *rsa_gettable_ctx_md_params(void *vprsactx)
1430
0
{
1431
0
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1432
1433
0
    if (prsactx->md == NULL)
1434
0
        return 0;
1435
1436
0
    return EVP_MD_gettable_ctx_params(prsactx->md);
1437
0
}
1438
1439
static int rsa_set_ctx_md_params(void *vprsactx, const OSSL_PARAM params[])
1440
0
{
1441
0
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1442
1443
0
    if (prsactx->mdctx == NULL)
1444
0
        return 0;
1445
1446
0
    return EVP_MD_CTX_set_params(prsactx->mdctx, params);
1447
0
}
1448
1449
static const OSSL_PARAM *rsa_settable_ctx_md_params(void *vprsactx)
1450
0
{
1451
0
    PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1452
1453
0
    if (prsactx->md == NULL)
1454
0
        return 0;
1455
1456
0
    return EVP_MD_settable_ctx_params(prsactx->md);
1457
0
}
1458
1459
const OSSL_DISPATCH ossl_rsa_signature_functions[] = {
1460
    { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))rsa_newctx },
1461
    { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))rsa_sign_init },
1462
    { OSSL_FUNC_SIGNATURE_SIGN, (void (*)(void))rsa_sign },
1463
    { OSSL_FUNC_SIGNATURE_VERIFY_INIT, (void (*)(void))rsa_verify_init },
1464
    { OSSL_FUNC_SIGNATURE_VERIFY, (void (*)(void))rsa_verify },
1465
    { OSSL_FUNC_SIGNATURE_VERIFY_RECOVER_INIT,
1466
      (void (*)(void))rsa_verify_recover_init },
1467
    { OSSL_FUNC_SIGNATURE_VERIFY_RECOVER,
1468
      (void (*)(void))rsa_verify_recover },
1469
    { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT,
1470
      (void (*)(void))rsa_digest_sign_init },
1471
    { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE,
1472
      (void (*)(void))rsa_digest_signverify_update },
1473
    { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL,
1474
      (void (*)(void))rsa_digest_sign_final },
1475
    { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT,
1476
      (void (*)(void))rsa_digest_verify_init },
1477
    { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_UPDATE,
1478
      (void (*)(void))rsa_digest_signverify_update },
1479
    { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_FINAL,
1480
      (void (*)(void))rsa_digest_verify_final },
1481
    { OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))rsa_freectx },
1482
    { OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))rsa_dupctx },
1483
    { OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))rsa_get_ctx_params },
1484
    { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS,
1485
      (void (*)(void))rsa_gettable_ctx_params },
1486
    { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))rsa_set_ctx_params },
1487
    { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS,
1488
      (void (*)(void))rsa_settable_ctx_params },
1489
    { OSSL_FUNC_SIGNATURE_GET_CTX_MD_PARAMS,
1490
      (void (*)(void))rsa_get_ctx_md_params },
1491
    { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_MD_PARAMS,
1492
      (void (*)(void))rsa_gettable_ctx_md_params },
1493
    { OSSL_FUNC_SIGNATURE_SET_CTX_MD_PARAMS,
1494
      (void (*)(void))rsa_set_ctx_md_params },
1495
    { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
1496
      (void (*)(void))rsa_settable_ctx_md_params },
1497
    { 0, NULL }
1498
};