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Diffstat (limited to 'openssl/crypto/asn1/ameth_lib.c')
| -rw-r--r-- | openssl/crypto/asn1/ameth_lib.c | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/ameth_lib.c b/openssl/crypto/asn1/ameth_lib.c new file mode 100644 index 000000000..18957c669 --- /dev/null +++ b/openssl/crypto/asn1/ameth_lib.c @@ -0,0 +1,446 @@ +/* Written by Dr Stephen N Henson (steve@openssl.org) 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). + * + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/asn1t.h> +#include <openssl/x509.h> +#ifndef OPENSSL_NO_ENGINE +#include <openssl/engine.h> +#endif +#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; +extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth; + +/* Keep this sorted in type order !! */ +static const EVP_PKEY_ASN1_METHOD *standard_methods[] = + { +#ifndef OPENSSL_NO_RSA + &rsa_asn1_meths[0], + &rsa_asn1_meths[1], +#endif +#ifndef OPENSSL_NO_DH + &dh_asn1_meth, +#endif +#ifndef OPENSSL_NO_DSA + &dsa_asn1_meths[0], + &dsa_asn1_meths[1], + &dsa_asn1_meths[2], + &dsa_asn1_meths[3], + &dsa_asn1_meths[4], +#endif +#ifndef OPENSSL_NO_EC + &eckey_asn1_meth, +#endif + &hmac_asn1_meth + }; + +typedef int sk_cmp_fn_type(const char * const *a, const char * const *b); +DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD) +static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL; + + + +#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)); + } +#endif + +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 = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); + 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 = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); + 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, + sizeof(standard_methods) + /sizeof(EVP_PKEY_ASN1_METHOD *)); + if (!ret || !*ret) + 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; + ENGINE *e; + + 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 + /* 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; + 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 = 0; i < EVP_PKEY_asn1_get_count(); i++) + { + 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)) + return ameth; + } + return NULL; + } + +int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) + { + if (app_methods == NULL) + { + app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); + if (!app_methods) + 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) + return 0; + ameth->pkey_base_id = to; + return EVP_PKEY_asn1_add0(ameth); + } + +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(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; + ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD)); + if (!ameth) + return NULL; + + ameth->pkey_id = id; + ameth->pkey_base_id = id; + ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC; + + if (info) + { + ameth->info = BUF_strdup(info); + if (!ameth->info) + goto err; + } + + if (pem_str) + { + ameth->pem_str = BUF_strdup(pem_str); + if (!ameth->pem_str) + goto err; + } + + ameth->pub_decode = 0; + ameth->pub_encode = 0; + ameth->pub_cmp = 0; + ameth->pub_print = 0; + + ameth->priv_decode = 0; + ameth->priv_encode = 0; + ameth->priv_print = 0; + + ameth->old_priv_encode = 0; + ameth->old_priv_decode = 0; + + ameth->pkey_size = 0; + ameth->pkey_bits = 0; + + ameth->param_decode = 0; + ameth->param_encode = 0; + ameth->param_missing = 0; + ameth->param_copy = 0; + ameth->param_cmp = 0; + ameth->param_print = 0; + + ameth->pkey_free = 0; + ameth->pkey_ctrl = 0; + + 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) + { + + dst->pub_decode = src->pub_decode; + dst->pub_encode = src->pub_encode; + dst->pub_cmp = src->pub_cmp; + dst->pub_print = src->pub_print; + + dst->priv_decode = src->priv_decode; + dst->priv_encode = src->priv_encode; + dst->priv_print = src->priv_print; + + dst->old_priv_encode = src->old_priv_encode; + dst->old_priv_decode = src->old_priv_decode; + + dst->pkey_size = src->pkey_size; + dst->pkey_bits = src->pkey_bits; + + dst->param_decode = src->param_decode; + dst->param_encode = src->param_encode; + dst->param_missing = src->param_missing; + dst->param_copy = src->param_copy; + dst->param_cmp = src->param_cmp; + dst->param_print = src->param_print; + + dst->pkey_free = src->pkey_free; + dst->pkey_ctrl = src->pkey_ctrl; + + } + +void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) + { + if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) + { + if (ameth->pem_str) + OPENSSL_free(ameth->pem_str); + if (ameth->info) + OPENSSL_free(ameth->info); + OPENSSL_free(ameth); + } + } + +void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, + int (*pub_decode)(EVP_PKEY *pk, 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, 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; + } |