2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
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
12 #include <openssl/objects.h>
13 #include <openssl/evp.h>
14 #include "internal/cryptlib.h"
15 #include "internal/evp_int.h"
16 #include "internal/provider.h"
19 static EVP_SIGNATURE *evp_signature_new(OSSL_PROVIDER *prov)
21 EVP_SIGNATURE *signature = OPENSSL_zalloc(sizeof(EVP_SIGNATURE));
23 signature->lock = CRYPTO_THREAD_lock_new();
24 if (signature->lock == NULL) {
25 OPENSSL_free(signature);
28 signature->prov = prov;
29 ossl_provider_up_ref(prov);
30 signature->refcnt = 1;
35 static void *evp_signature_from_dispatch(const char *name,
36 const OSSL_DISPATCH *fns,
41 * Signature functions cannot work without a key, and key management
42 * from the same provider to manage its keys. We therefore fetch
43 * a key management method using the same algorithm and properties
44 * and pass that down to evp_generic_fetch to be passed on to our
45 * evp_signature_from_dispatch, which will attach the key management
46 * method to the newly created key exchange method as long as the
49 struct keymgmt_data_st *keymgmt_data = vkeymgmt_data;
50 EVP_KEYMGMT *keymgmt = EVP_KEYMGMT_fetch(keymgmt_data->ctx, name,
51 keymgmt_data->properties);
52 EVP_SIGNATURE *signature = NULL;
55 if (keymgmt == NULL || EVP_KEYMGMT_provider(keymgmt) != prov) {
56 ERR_raise(ERR_LIB_EVP, EVP_R_NO_KEYMGMT_AVAILABLE);
60 if ((signature = evp_signature_new(prov)) == NULL
61 || (signature->name = OPENSSL_strdup(name)) == NULL) {
62 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
66 signature->keymgmt = keymgmt;
67 keymgmt = NULL; /* avoid double free on failure below */
69 for (; fns->function_id != 0; fns++) {
70 switch (fns->function_id) {
71 case OSSL_FUNC_SIGNATURE_NEWCTX:
72 if (signature->newctx != NULL)
74 signature->newctx = OSSL_get_OP_signature_newctx(fns);
77 case OSSL_FUNC_SIGNATURE_SIGN_INIT:
78 if (signature->sign_init != NULL)
80 signature->sign_init = OSSL_get_OP_signature_sign_init(fns);
83 case OSSL_FUNC_SIGNATURE_SIGN:
84 if (signature->sign != NULL)
86 signature->sign = OSSL_get_OP_signature_sign(fns);
89 case OSSL_FUNC_SIGNATURE_FREECTX:
90 if (signature->freectx != NULL)
92 signature->freectx = OSSL_get_OP_signature_freectx(fns);
95 case OSSL_FUNC_SIGNATURE_DUPCTX:
96 if (signature->dupctx != NULL)
98 signature->dupctx = OSSL_get_OP_signature_dupctx(fns);
100 case OSSL_FUNC_SIGNATURE_SET_PARAMS:
101 if (signature->set_params != NULL)
103 signature->set_params = OSSL_get_OP_signature_set_params(fns);
109 * In order to be a consistent set of functions we must have at least
110 * a complete set of "signature" functions: sign_init, sign, newctx,
111 * and freectx. The dupctx function is optional.
113 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
119 EVP_SIGNATURE_free(signature);
120 EVP_KEYMGMT_free(keymgmt);
124 void EVP_SIGNATURE_free(EVP_SIGNATURE *signature)
126 if (signature != NULL) {
129 CRYPTO_DOWN_REF(&signature->refcnt, &i, signature->lock);
132 EVP_KEYMGMT_free(signature->keymgmt);
133 ossl_provider_free(signature->prov);
134 OPENSSL_free(signature->name);
135 CRYPTO_THREAD_lock_free(signature->lock);
136 OPENSSL_free(signature);
140 int EVP_SIGNATURE_up_ref(EVP_SIGNATURE *signature)
144 CRYPTO_UP_REF(&signature->refcnt, &ref, signature->lock);
148 OSSL_PROVIDER *EVP_SIGNATURE_provider(const EVP_SIGNATURE *signature)
150 return signature->prov;
153 EVP_SIGNATURE *EVP_SIGNATURE_fetch(OPENSSL_CTX *ctx, const char *algorithm,
154 const char *properties)
156 struct keymgmt_data_st keymgmt_data;
159 * A signature operation cannot work without a key, so we need key
160 * management from the same provider to manage its keys.
162 keymgmt_data.ctx = ctx;
163 keymgmt_data.properties = properties;
164 return evp_generic_fetch(ctx, OSSL_OP_SIGNATURE, algorithm, properties,
165 evp_signature_from_dispatch, &keymgmt_data,
166 (int (*)(void *))EVP_SIGNATURE_up_ref,
167 (void (*)(void *))EVP_SIGNATURE_free);
170 int EVP_PKEY_sign_init_ex(EVP_PKEY_CTX *ctx, EVP_SIGNATURE *signature)
173 void *provkey = NULL;
176 EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
180 ctx->operation = EVP_PKEY_OP_SIGN;
182 if (ctx->engine != NULL)
185 if (signature != NULL) {
186 if (!EVP_SIGNATURE_up_ref(signature))
189 int nid = ctx->pkey != NULL ? ctx->pkey->type : ctx->pmeth->pkey_id;
192 * TODO(3.0): Check for legacy handling. Remove this once all all
193 * algorithms are moved to providers.
195 if (ctx->pkey != NULL) {
196 switch (ctx->pkey->type) {
200 signature = EVP_SIGNATURE_fetch(NULL, OBJ_nid2sn(nid), NULL);
205 if (signature == NULL) {
206 EVPerr(0, EVP_R_INITIALIZATION_ERROR);
211 if (ctx->sigprovctx != NULL && ctx->signature != NULL)
212 ctx->signature->freectx(ctx->sigprovctx);
213 EVP_SIGNATURE_free(ctx->signature);
214 ctx->signature = signature;
215 if (ctx->pkey != NULL) {
216 provkey = evp_keymgmt_export_to_provider(ctx->pkey, signature->keymgmt);
217 if (provkey == NULL) {
218 EVPerr(0, EVP_R_INITIALIZATION_ERROR);
222 ctx->sigprovctx = signature->newctx(ossl_provider_ctx(signature->prov));
223 if (ctx->sigprovctx == NULL) {
224 /* The provider key can stay in the cache */
225 EVPerr(0, EVP_R_INITIALIZATION_ERROR);
228 ret = signature->sign_init(ctx->sigprovctx, provkey);
232 ctx->operation = EVP_PKEY_OP_UNDEFINED;
236 if (ctx->pmeth == NULL || ctx->pmeth->sign == NULL) {
237 EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
241 if (ctx->pmeth->sign_init == NULL)
243 ret = ctx->pmeth->sign_init(ctx);
245 ctx->operation = EVP_PKEY_OP_UNDEFINED;
249 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
251 return EVP_PKEY_sign_init_ex(ctx, NULL);
254 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
255 unsigned char *sig, size_t *siglen,
256 const unsigned char *tbs, size_t tbslen)
261 EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
265 if (ctx->operation != EVP_PKEY_OP_SIGN) {
266 EVPerr(0, EVP_R_OPERATON_NOT_INITIALIZED);
270 if (ctx->sigprovctx == NULL)
273 ret = ctx->signature->sign(ctx->sigprovctx, sig, siglen, SIZE_MAX,
279 if (ctx->pmeth == NULL || ctx->pmeth->sign == NULL) {
280 EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
284 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
285 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
288 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
291 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
292 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
293 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
296 ctx->operation = EVP_PKEY_OP_VERIFY;
297 if (!ctx->pmeth->verify_init)
299 ret = ctx->pmeth->verify_init(ctx);
301 ctx->operation = EVP_PKEY_OP_UNDEFINED;
305 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
306 const unsigned char *sig, size_t siglen,
307 const unsigned char *tbs, size_t tbslen)
309 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
310 EVPerr(EVP_F_EVP_PKEY_VERIFY,
311 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
314 if (ctx->operation != EVP_PKEY_OP_VERIFY) {
315 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
318 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
321 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
324 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
325 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
326 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
329 ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
330 if (!ctx->pmeth->verify_recover_init)
332 ret = ctx->pmeth->verify_recover_init(ctx);
334 ctx->operation = EVP_PKEY_OP_UNDEFINED;
338 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
339 unsigned char *rout, size_t *routlen,
340 const unsigned char *sig, size_t siglen)
342 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
343 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
344 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
347 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
348 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
351 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
352 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
355 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
358 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
359 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
360 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
363 ctx->operation = EVP_PKEY_OP_ENCRYPT;
364 if (!ctx->pmeth->encrypt_init)
366 ret = ctx->pmeth->encrypt_init(ctx);
368 ctx->operation = EVP_PKEY_OP_UNDEFINED;
372 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
373 unsigned char *out, size_t *outlen,
374 const unsigned char *in, size_t inlen)
376 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
377 EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
378 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
381 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
382 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
385 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
386 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
389 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
392 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
393 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
394 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
397 ctx->operation = EVP_PKEY_OP_DECRYPT;
398 if (!ctx->pmeth->decrypt_init)
400 ret = ctx->pmeth->decrypt_init(ctx);
402 ctx->operation = EVP_PKEY_OP_UNDEFINED;
406 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
407 unsigned char *out, size_t *outlen,
408 const unsigned char *in, size_t inlen)
410 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
411 EVPerr(EVP_F_EVP_PKEY_DECRYPT,
412 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
415 if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
416 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
419 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
420 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);