X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=crypto%2Fasn1%2Fameth_lib.c;h=8c7df51fe41fd55f0fbaf71477857d43ce992444;hb=7674e92324648b59786d86d8e9014bbaed4e6d07;hp=f2c4166f1d655eeb5b09a6ad60250583b3f7e4d0;hpb=6f81892e6ba0bf0840d12e27f695817230dd42c1;p=openssl.git diff --git a/crypto/asn1/ameth_lib.c b/crypto/asn1/ameth_lib.c index f2c4166f1d..8c7df51fe4 100644 --- a/crypto/asn1/ameth_lib.c +++ b/crypto/asn1/ameth_lib.c @@ -1,119 +1,433 @@ -/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL - * project 2006. - */ -/* ==================================================================== - * Copyright (c) 2006 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). +/* + * Copyright 2006-2020 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 + * https://www.openssl.org/source/license.html */ +#include "e_os.h" /* for strncasecmp */ +#include "internal/cryptlib.h" #include -#include "cryptlib.h" #include #include -#include -#include "asn1_locl.h" - -extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[]; -extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[]; -extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth; -extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth; - -/* Keep this sorted in type order !! */ -const EVP_PKEY_ASN1_METHOD *standard_methods[] = - { - &rsa_asn1_meths[0], - &rsa_asn1_meths[1], - &dh_asn1_meth, - &dsa_asn1_meths[0], - &dsa_asn1_meths[1], - &dsa_asn1_meths[2], - &dsa_asn1_meths[3], - &dsa_asn1_meths[4], - &eckey_asn1_meth - }; - -#ifdef TEST -void main() - { - int i; - for (i = 0; - i < sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); - i++) - fprintf(stderr, "Number %d id=%d (%s)\n", i, - standard_methods[i]->pkey_id, - OBJ_nid2sn(standard_methods[i]->pkey_id)); - } +#include +#include "crypto/asn1.h" +#include "crypto/evp.h" + +#include "standard_methods.h" + +typedef int sk_cmp_fn_type(const char *const *a, const char *const *b); +static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL; + +DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, + const EVP_PKEY_ASN1_METHOD *, ameth); + +static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a, + const EVP_PKEY_ASN1_METHOD *const *b) +{ + return ((*a)->pkey_id - (*b)->pkey_id); +} + +IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, + const EVP_PKEY_ASN1_METHOD *, ameth); + +int EVP_PKEY_asn1_get_count(void) +{ + int num = OSSL_NELEM(standard_methods); + if (app_methods) + num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods); + return num; +} + +const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx) +{ + int num = OSSL_NELEM(standard_methods); + if (idx < 0) + return NULL; + if (idx < num) + return standard_methods[idx]; + idx -= num; + return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); +} + +static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type) +{ + EVP_PKEY_ASN1_METHOD tmp; + const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret; + + tmp.pkey_id = type; + if (app_methods) { + int idx; + idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp); + if (idx >= 0) + return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); + } + ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods)); + if (ret == NULL || *ret == NULL) + return NULL; + return *ret; +} + +/* + * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also + * search through engines and set *pe to a functional reference to the engine + * implementing 'type' or NULL if no engine implements it. + */ + +const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type) +{ + const EVP_PKEY_ASN1_METHOD *t; + + for (;;) { + t = pkey_asn1_find(type); + if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS)) + break; + type = t->pkey_base_id; + } + if (pe) { +#ifndef OPENSSL_NO_ENGINE + ENGINE *e; + /* type will contain the final unaliased type */ + e = ENGINE_get_pkey_asn1_meth_engine(type); + if (e) { + *pe = e; + return ENGINE_get_pkey_asn1_meth(e, type); + } #endif + *pe = NULL; + } + return t; +} + +const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, + const char *str, int len) +{ + int i; + const EVP_PKEY_ASN1_METHOD *ameth = NULL; + + if (len == -1) + len = strlen(str); + if (pe) { +#ifndef OPENSSL_NO_ENGINE + ENGINE *e; + ameth = ENGINE_pkey_asn1_find_str(&e, str, len); + if (ameth) { + /* + * Convert structural into functional reference + */ + if (!ENGINE_init(e)) + ameth = NULL; + ENGINE_free(e); + *pe = e; + return ameth; + } +#endif + *pe = NULL; + } + for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) { + ameth = EVP_PKEY_asn1_get0(i); + if (ameth->pkey_flags & ASN1_PKEY_ALIAS) + continue; + if ((int)strlen(ameth->pem_str) == len + && strncasecmp(ameth->pem_str, str, len) == 0) + return ameth; + } + return NULL; +} + +int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) +{ + EVP_PKEY_ASN1_METHOD tmp = { 0, }; + + /* + * One of the following must be true: + * + * pem_str == NULL AND ASN1_PKEY_ALIAS is set + * pem_str != NULL AND ASN1_PKEY_ALIAS is clear + * + * Anything else is an error and may lead to a corrupt ASN1 method table + */ + if (!((ameth->pem_str == NULL + && (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0) + || (ameth->pem_str != NULL + && (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) { + EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, ERR_R_PASSED_INVALID_ARGUMENT); + return 0; + } + + if (app_methods == NULL) { + app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); + if (app_methods == NULL) + return 0; + } + + tmp.pkey_id = ameth->pkey_id; + if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) { + EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, + EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED); + return 0; + } + + if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth)) + return 0; + sk_EVP_PKEY_ASN1_METHOD_sort(app_methods); + return 1; +} + +int EVP_PKEY_asn1_add_alias(int to, int from) +{ + EVP_PKEY_ASN1_METHOD *ameth; + ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL); + if (ameth == NULL) + return 0; + ameth->pkey_base_id = to; + if (!EVP_PKEY_asn1_add0(ameth)) { + EVP_PKEY_asn1_free(ameth); + return 0; + } + return 1; +} + +int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, + int *ppkey_flags, const char **pinfo, + const char **ppem_str, + const EVP_PKEY_ASN1_METHOD *ameth) +{ + if (!ameth) + return 0; + if (ppkey_id) + *ppkey_id = ameth->pkey_id; + if (ppkey_base_id) + *ppkey_base_id = ameth->pkey_base_id; + if (ppkey_flags) + *ppkey_flags = ameth->pkey_flags; + if (pinfo) + *pinfo = ameth->info; + if (ppem_str) + *ppem_str = ameth->pem_str; + return 1; +} + +const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey) +{ + return pkey->ameth; +} + +EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags, + const char *pem_str, const char *info) +{ + EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth)); + + if (ameth == NULL) + return NULL; + + ameth->pkey_id = id; + ameth->pkey_base_id = id; + ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC; + + if (info) { + ameth->info = OPENSSL_strdup(info); + if (!ameth->info) + goto err; + } + + if (pem_str) { + ameth->pem_str = OPENSSL_strdup(pem_str); + if (!ameth->pem_str) + goto err; + } + + return ameth; + + err: + EVP_PKEY_asn1_free(ameth); + return NULL; + +} + +void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, + const EVP_PKEY_ASN1_METHOD *src) +{ + int pkey_id = dst->pkey_id; + int pkey_base_id = dst->pkey_base_id; + unsigned long pkey_flags = dst->pkey_flags; + char *pem_str = dst->pem_str; + char *info = dst->info; + + *dst = *src; + + /* We only copy the function pointers so restore the other values */ + dst->pkey_id = pkey_id; + dst->pkey_base_id = pkey_base_id; + dst->pkey_flags = pkey_flags; + dst->pem_str = pem_str; + dst->info = info; +} + +void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) +{ + if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) { + OPENSSL_free(ameth->pem_str); + OPENSSL_free(ameth->info); + OPENSSL_free(ameth); + } +} + +void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, + int (*pub_decode) (EVP_PKEY *pk, + const X509_PUBKEY *pub), + int (*pub_encode) (X509_PUBKEY *pub, + const EVP_PKEY *pk), + int (*pub_cmp) (const EVP_PKEY *a, + const EVP_PKEY *b), + int (*pub_print) (BIO *out, + const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx), + int (*pkey_size) (const EVP_PKEY *pk), + int (*pkey_bits) (const EVP_PKEY *pk)) +{ + ameth->pub_decode = pub_decode; + ameth->pub_encode = pub_encode; + ameth->pub_cmp = pub_cmp; + ameth->pub_print = pub_print; + ameth->pkey_size = pkey_size; + ameth->pkey_bits = pkey_bits; +} + +void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth, + int (*priv_decode) (EVP_PKEY *pk, + const PKCS8_PRIV_KEY_INFO + *p8inf), + int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, + const EVP_PKEY *pk), + int (*priv_print) (BIO *out, + const EVP_PKEY *pkey, + int indent, + ASN1_PCTX *pctx)) +{ + ameth->priv_decode = priv_decode; + ameth->priv_encode = priv_encode; + ameth->priv_print = priv_print; +} + +void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth, + int (*param_decode) (EVP_PKEY *pkey, + const unsigned char **pder, + int derlen), + int (*param_encode) (const EVP_PKEY *pkey, + unsigned char **pder), + int (*param_missing) (const EVP_PKEY *pk), + int (*param_copy) (EVP_PKEY *to, + const EVP_PKEY *from), + int (*param_cmp) (const EVP_PKEY *a, + const EVP_PKEY *b), + int (*param_print) (BIO *out, + const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx)) +{ + ameth->param_decode = param_decode; + ameth->param_encode = param_encode; + ameth->param_missing = param_missing; + ameth->param_copy = param_copy; + ameth->param_cmp = param_cmp; + ameth->param_print = param_print; +} + +void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth, + void (*pkey_free) (EVP_PKEY *pkey)) +{ + ameth->pkey_free = pkey_free; +} + +void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth, + int (*pkey_ctrl) (EVP_PKEY *pkey, int op, + long arg1, void *arg2)) +{ + ameth->pkey_ctrl = pkey_ctrl; +} + +void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth, + int (*pkey_security_bits) (const EVP_PKEY + *pk)) +{ + ameth->pkey_security_bits = pkey_security_bits; +} + +void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth, + int (*item_verify) (EVP_MD_CTX *ctx, + const ASN1_ITEM *it, + void *asn, + X509_ALGOR *a, + ASN1_BIT_STRING *sig, + EVP_PKEY *pkey), + int (*item_sign) (EVP_MD_CTX *ctx, + const ASN1_ITEM *it, + void *asn, + X509_ALGOR *alg1, + X509_ALGOR *alg2, + ASN1_BIT_STRING *sig)) +{ + ameth->item_sign = item_sign; + ameth->item_verify = item_verify; +} + +void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth, + int (*siginf_set) (X509_SIG_INFO *siginf, + const X509_ALGOR *alg, + const ASN1_STRING *sig)) +{ + ameth->siginf_set = siginf_set; +} + +void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth, + int (*pkey_check) (const EVP_PKEY *pk)) +{ + ameth->pkey_check = pkey_check; +} + +void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth, + int (*pkey_pub_check) (const EVP_PKEY *pk)) +{ + ameth->pkey_public_check = pkey_pub_check; +} + +void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth, + int (*pkey_param_check) (const EVP_PKEY *pk)) +{ + ameth->pkey_param_check = pkey_param_check; +} + +void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth, + int (*set_priv_key) (EVP_PKEY *pk, + const unsigned char + *priv, + size_t len)) +{ + ameth->set_priv_key = set_priv_key; +} + +void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth, + int (*set_pub_key) (EVP_PKEY *pk, + const unsigned char *pub, + size_t len)) +{ + ameth->set_pub_key = set_pub_key; +} -static int ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a, - const EVP_PKEY_ASN1_METHOD * const *b) - { -/*fprintf(stderr, "Comparing %d with %d\n", (*a)->pkey_id, (*b)->pkey_id);*/ - return ((*a)->pkey_id - (*b)->pkey_id); - } - -const EVP_PKEY_ASN1_METHOD *EVP_PKEY_ASN1_find(int type) - { - EVP_PKEY_ASN1_METHOD tmp, *t = &tmp, **ret; - tmp.pkey_id = type; - ret = (EVP_PKEY_ASN1_METHOD **) OBJ_bsearch((char *)&t, - (char *)standard_methods, - sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *), - sizeof(EVP_PKEY_ASN1_METHOD *), - (int (*)(const void *, const void *))ameth_cmp); - if (!ret || !*ret) - return NULL; - if ((*ret)->pkey_flags & ASN1_PKEY_ALIAS) - return EVP_PKEY_ASN1_find((*ret)->pkey_base_id); - return *ret; - } +void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth, + int (*get_priv_key) (const EVP_PKEY *pk, + unsigned char *priv, + size_t *len)) +{ + ameth->get_priv_key = get_priv_key; +} +void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth, + int (*get_pub_key) (const EVP_PKEY *pk, + unsigned char *pub, + size_t *len)) +{ + ameth->get_pub_key = get_pub_key; +}