| /* |
| * Copyright 2006-2022 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 |
| */ |
| |
| /* We need to use some engine deprecated APIs */ |
| #define OPENSSL_SUPPRESS_DEPRECATED |
| |
| #include "internal/cryptlib.h" |
| #include <stdio.h> |
| #include <openssl/asn1t.h> |
| #include <openssl/x509.h> |
| #include <openssl/engine.h> |
| #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 |
| && OPENSSL_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))) { |
| ERR_raise(ERR_LIB_EVP, 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) { |
| ERR_raise(ERR_LIB_EVP, |
| 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) { |
| ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE); |
| 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 == NULL) |
| goto err; |
| } |
| |
| if (pem_str) { |
| ameth->pem_str = OPENSSL_strdup(pem_str); |
| if (ameth->pem_str == NULL) |
| goto err; |
| } |
| |
| return ameth; |
| |
| err: |
| EVP_PKEY_asn1_free(ameth); |
| ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE); |
| 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, |
| const void *data, |
| const X509_ALGOR *a, |
| const ASN1_BIT_STRING *sig, |
| EVP_PKEY *pkey), |
| int (*item_sign) (EVP_MD_CTX *ctx, |
| const ASN1_ITEM *it, |
| const void *data, |
| 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; |
| } |
| |
| 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; |
| } |
