void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
int selection, const OSSL_PARAM params[])
{
- void *keydata = evp_keymgmt_newdata(keymgmt);
+ void *keydata = NULL;
+ if ((keydata = evp_keymgmt_newdata(keymgmt)) == NULL
+ || !evp_keymgmt_import(keymgmt, keydata, selection, params)
+ || !EVP_PKEY_set_type_by_keymgmt(target, keymgmt)) {
+ evp_keymgmt_freedata(keymgmt, keydata);
+ keydata = NULL;
+ }
if (keydata != NULL) {
- if (!evp_keymgmt_import(keymgmt, keydata, selection, params)
- || !EVP_KEYMGMT_up_ref(keymgmt)) {
- evp_keymgmt_freedata(keymgmt, keydata);
- return NULL;
- }
-
- evp_keymgmt_util_clear_operation_cache(target);
- target->keymgmt = keymgmt;
target->keydata = keydata;
evp_keymgmt_util_cache_keyinfo(target);
}
}
}
/*
- * If we've successfully cross exported one way, there's not point
+ * If we've successfully cross exported one way, there's no point
* doing it the other way, hence the |!ok| check.
*/
if (!ok
}
if (to->keymgmt == NULL
- && !EVP_KEYMGMT_up_ref(to_keymgmt)) {
+ && !EVP_PKEY_set_type_by_keymgmt(to, to_keymgmt)) {
evp_keymgmt_freedata(to_keymgmt, alloc_keydata);
return 0;
}
- evp_keymgmt_util_clear_operation_cache(to);
- to->keymgmt = to_keymgmt;
to->keydata = to_keydata;
evp_keymgmt_util_cache_keyinfo(to);
void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
void *genctx, OSSL_CALLBACK *cb, void *cbarg)
{
- void *keydata = evp_keymgmt_gen(keymgmt, genctx, cb, cbarg);
+ void *keydata = NULL;
+ if ((keydata = evp_keymgmt_gen(keymgmt, genctx, cb, cbarg)) == NULL
+ || !EVP_PKEY_set_type_by_keymgmt(target, keymgmt)) {
+ evp_keymgmt_freedata(keymgmt, keydata);
+ keydata = NULL;
+ }
if (keydata != NULL) {
- if (!EVP_KEYMGMT_up_ref(keymgmt)) {
- evp_keymgmt_freedata(keymgmt, keydata);
- return NULL;
- }
-
- evp_keymgmt_util_clear_operation_cache(target);
- target->keymgmt = keymgmt;
target->keydata = keydata;
evp_keymgmt_util_cache_keyinfo(target);
}
#include "internal/provider.h"
#include "evp_local.h"
+static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
+ int len, EVP_KEYMGMT *keymgmt);
static void evp_pkey_free_it(EVP_PKEY *key);
#ifndef FIPS_MODE
return -2;
}
-
-/*
- * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey
- * is NULL just return 1 or 0 if the algorithm exists.
- */
-
-static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
- int len)
-{
- const EVP_PKEY_ASN1_METHOD *ameth;
- ENGINE **eptr = (e == NULL) ? &e : NULL;
-
- if (pkey) {
- if (pkey->pkey.ptr)
- evp_pkey_free_it(pkey);
- /*
- * If key type matches and a method exists then this lookup has
- * succeeded once so just indicate success.
- */
- if ((type == pkey->save_type) && pkey->ameth)
- return 1;
-# ifndef OPENSSL_NO_ENGINE
- /* If we have ENGINEs release them */
- ENGINE_finish(pkey->engine);
- pkey->engine = NULL;
- ENGINE_finish(pkey->pmeth_engine);
- pkey->pmeth_engine = NULL;
-# endif
- }
- if (str)
- ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
- else
- ameth = EVP_PKEY_asn1_find(eptr, type);
-# ifndef OPENSSL_NO_ENGINE
- if (pkey == NULL && eptr != NULL)
- ENGINE_finish(e);
-# endif
- if (ameth == NULL) {
- EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
- return 0;
- }
- if (pkey) {
- pkey->ameth = ameth;
- pkey->engine = e;
-
- pkey->type = pkey->ameth->pkey_id;
- pkey->save_type = type;
- }
- return 1;
-}
-
EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
const unsigned char *priv,
size_t len)
EVP_PKEY *ret = EVP_PKEY_new();
if (ret == NULL
- || !pkey_set_type(ret, e, type, NULL, -1)) {
+ || !pkey_set_type(ret, e, type, NULL, -1, NULL)) {
/* EVPerr already called */
goto err;
}
EVP_PKEY *ret = EVP_PKEY_new();
if (ret == NULL
- || !pkey_set_type(ret, e, type, NULL, -1)) {
+ || !pkey_set_type(ret, e, type, NULL, -1, NULL)) {
/* EVPerr already called */
goto err;
}
size_t paramsn = 0;
if (ret == NULL
- || cmctx == NULL
- || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1)) {
+ || cmctx == NULL
+ || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1, NULL)) {
/* EVPerr already called */
goto err;
}
int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
{
- return pkey_set_type(pkey, NULL, type, NULL, -1);
+ return pkey_set_type(pkey, NULL, type, NULL, -1, NULL);
}
int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
{
- return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len);
+ return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len, NULL);
}
int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type)
return ret;
}
+/*
+ * Setup a public key management method.
+ *
+ * For legacy keys, either |type| or |str| is expected to have the type
+ * information. In this case, the setup consists of finding an ASN1 method
+ * and potentially an ENGINE, and setting those fields in |pkey|.
+ *
+ * For provider side keys, |keymgmt| is expected to be non-NULL. In this
+ * case, the setup consists of setting the |keymgmt| field in |pkey|.
+ *
+ * If pkey is NULL just return 1 or 0 if the key management method exists.
+ */
+
+static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
+ int len, EVP_KEYMGMT *keymgmt)
+{
+#ifndef FIPS_MODE
+ const EVP_PKEY_ASN1_METHOD *ameth = NULL;
+ ENGINE **eptr = (e == NULL) ? &e : NULL;
+#endif
+
+ /*
+ * The setups can't set both legacy and provider side methods.
+ * It is forbidden
+ */
+ if (!ossl_assert(type == EVP_PKEY_NONE || keymgmt == NULL)
+ || !ossl_assert(e == NULL || keymgmt == NULL)) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ if (pkey != NULL) {
+ int free_it = 0;
+
+#ifndef FIPS_MODE
+ free_it = free_it || pkey->pkey.ptr != NULL;
+#endif
+ free_it = free_it || pkey->keydata != NULL;
+ if (free_it)
+ evp_pkey_free_it(pkey);
+#ifndef FIPS_MODE
+ /*
+ * If key type matches and a method exists then this lookup has
+ * succeeded once so just indicate success.
+ */
+ if (pkey->type != EVP_PKEY_NONE
+ && type == pkey->save_type
+ && pkey->ameth != NULL)
+ return 1;
+# ifndef OPENSSL_NO_ENGINE
+ /* If we have ENGINEs release them */
+ ENGINE_finish(pkey->engine);
+ pkey->engine = NULL;
+ ENGINE_finish(pkey->pmeth_engine);
+ pkey->pmeth_engine = NULL;
+# endif
+#endif
+ }
+#ifndef FIPS_MODE
+ if (str != NULL)
+ ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
+ else if (type != EVP_PKEY_NONE)
+ ameth = EVP_PKEY_asn1_find(eptr, type);
+# ifndef OPENSSL_NO_ENGINE
+ if (pkey == NULL && eptr != NULL)
+ ENGINE_finish(e);
+# endif
+#endif
+
+
+ {
+ int check = 1;
+
+#ifndef FIPS_MODE
+ check = check && ameth == NULL;
+#endif
+ check = check && keymgmt == NULL;
+ if (check) {
+ EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
+ return 0;
+ }
+ }
+ if (pkey != NULL) {
+ if (keymgmt != NULL && !EVP_KEYMGMT_up_ref(keymgmt)) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ pkey->keymgmt = keymgmt;
+
+ pkey->save_type = type;
+ pkey->type = type;
+
+#ifndef FIPS_MODE
+ /*
+ * If the internal "origin" key is provider side, don't save |ameth|.
+ * The main reason is that |ameth| is one factor to detect that the
+ * internal "origin" key is a legacy one.
+ */
+ if (keymgmt == NULL)
+ pkey->ameth = ameth;
+ pkey->engine = e;
+
+ /*
+ * The EVP_PKEY_ASN1_METHOD |pkey_id| serves different purposes,
+ * depending on if we're setting this key to contain a legacy or
+ * a provider side "origin" key. For a legacy key, we assign it
+ * to the |type| field, but for a provider side key, we assign it
+ * to the |save_type| field, because |type| is supposed to be set
+ * to EVP_PKEY_NONE in that case.
+ */
+ if (keymgmt != NULL)
+ pkey->save_type = ameth->pkey_id;
+ else if (pkey->ameth != NULL)
+ pkey->type = ameth->pkey_id;
+#endif
+ }
+ return 1;
+}
+
+#ifndef FIPS_MODE
+static void find_ameth(const char *name, void *data)
+{
+ const char **str = data;
+
+ /*
+ * The error messages from pkey_set_type() are uninteresting here,
+ * and misleading.
+ */
+ ERR_set_mark();
+
+ if (pkey_set_type(NULL, NULL, EVP_PKEY_NONE, name, strlen(name),
+ NULL)) {
+ if (str[0] == NULL)
+ str[0] = name;
+ else if (str[1] == NULL)
+ str[1] = name;
+ }
+
+ ERR_pop_to_mark();
+}
+#endif
+
+int EVP_PKEY_set_type_by_keymgmt(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt)
+{
+#ifndef FIPS_MODE
+# define EVP_PKEY_TYPE_STR str[0]
+# define EVP_PKEY_TYPE_STRLEN (str[0] == NULL ? -1 : (int)strlen(str[0]))
+ /*
+ * Find at most two strings that have an associated EVP_PKEY_ASN1_METHOD
+ * Ideally, only one should be found. If two (or more) are found, the
+ * match is ambiguous. This should never happen, but...
+ */
+ const char *str[2] = { NULL, NULL };
+
+ EVP_KEYMGMT_names_do_all(keymgmt, find_ameth, &str);
+ if (str[1] != NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+#else
+# define EVP_PKEY_TYPE_STR NULL
+# define EVP_PKEY_TYPE_STRLEN -1
+#endif
+ return pkey_set_type(pkey, NULL, EVP_PKEY_NONE,
+ EVP_PKEY_TYPE_STR, EVP_PKEY_TYPE_STRLEN,
+ keymgmt);
+
+#undef EVP_PKEY_TYPE_STR
+#undef EVP_PKEY_TYPE_STRLEN
+}
+
int EVP_PKEY_up_ref(EVP_PKEY *pkey)
{
int i;
if (x->ameth->pkey_free != NULL)
x->ameth->pkey_free(x);
x->pkey.ptr = NULL;
- x->ameth = NULL;
}
# ifndef OPENSSL_NO_ENGINE
ENGINE_finish(x->engine);
ENGINE_finish(x->pmeth_engine);
x->pmeth_engine = NULL;
# endif
- x->type = x->save_type = EVP_PKEY_NONE;
+ x->type = EVP_PKEY_NONE;
}
#endif /* FIPS_MODE */
--- /dev/null
+=pod
+
+=head1 NAME
+
+EVP_PKEY_set_type, EVP_PKEY_set_type_str, EVP_PKEY_set_type_by_keymgmt
+- functions to change the EVP_PKEY type
+
+=head1 SYNOPSIS
+
+ #include <openssl/evp.h>
+
+ int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
+ int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);
+ int EVP_PKEY_set_type_by_keymgmt(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt);
+
+=head1 DESCRIPTION
+
+All the functions described here behave the same in so far that they
+clear all the previous key data and methods from I<pkey>, and reset it
+to be of the type of key given by the different arguments. If
+I<pkey> is NULL, these functions will still return the same return
+values as if it wasn't.
+
+EVP_PKEY_set_type() initialises I<pkey> to contain an internal legacy
+key. When doing this, it finds a L<EVP_PKEY_ASN1_METHOD(3)>
+corresponding to I<type>, and associates I<pkey> with the findings.
+It is an error if no L<EVP_PKEY_ASN1_METHOD(3)> could be found for
+I<type>.
+
+EVP_PKEY_set_type_str() initialises I<pkey> to contain an internal legacy
+key. When doing this, it finds a L<EVP_PKEY_ASN1_METHOD(3)>
+corresponding to I<str> that has then length I<len>, and associates
+I<pkey> with the findings.
+It is an error if no L<EVP_PKEY_ASN1_METHOD(3)> could be found for
+I<type>.
+
+For both EVP_PKEY_set_type() and EVP_PKEY_set_type_str(), I<pkey> gets
+a numeric type, which can be retrieved with L<EVP_PKEY_id(3)>. This
+numeric type is taken from the L<EVP_PKEY_ASN1_METHOD(3)> that was
+found, and is equal to or closely related to I<type> in the case of
+EVP_PKEY_set_type(), or related to I<str> in the case of
+EVP_PKEY_set_type_str().
+
+EVP_PKEY_set_type_by_keymgmt() initialises I<pkey> to contain an
+internal provider side key. When doing this, it associates I<pkey>
+with I<keymgmt>. For keys initialised like this, the numeric type
+retrieved with L<EVP_PKEY_id(3)> will always be B<EVP_PKEY_NONE>.
+
+=head1 RETURN VALUES
+
+All functions described here return 1 if successful, or 0 on error.
+
+=head1 SEE ALSO
+
+L<EVP_PKEY_assign(3)>, L<EVP_PKEY_id(3)>, L<EVP_PKEY_get0_RSA(3)>,
+L<EVP_PKEY_copy_parameters(3)>, L<EVP_PKEY_ASN1_METHOD(3)>,
+L<EVP_KEYMGMT(3)>
+
+=head1 COPYRIGHT
+
+Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the Apache License 2.0 (the "License"). You may not use
+this file except in compliance with the License. You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut
projects / oweals / openssl.git / commitdiff