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CloverBootloader/Library/OpensslLib/openssl/providers/implementations/encode_decode/decode_der2key.c

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Take OpenSsl 3.0.9 from acidanthera audk. Doesn't link yet.
2024-01-10 10:22:53 +01:00
/*
* Copyright 2020-2023 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
*/
/*
* low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/core_object.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/params.h>
#include <openssl/pem.h> /* PEM_BUFSIZE and public PEM functions */
#include <openssl/pkcs12.h>
#include <openssl/x509.h>
#include <openssl/proverr.h>
#include "internal/cryptlib.h" /* ossl_assert() */
#include "internal/asn1.h"
#include "crypto/dh.h"
#include "crypto/dsa.h"
#include "crypto/ec.h"
#include "crypto/evp.h"
#include "crypto/ecx.h"
#include "crypto/rsa.h"
#include "crypto/x509.h"
#include "prov/bio.h"
#include "prov/implementations.h"
#include "endecoder_local.h"
struct der2key_ctx_st; /* Forward declaration */
typedef int check_key_fn(void *, struct der2key_ctx_st *ctx);
typedef void adjust_key_fn(void *, struct der2key_ctx_st *ctx);
typedef void free_key_fn(void *);
typedef void *d2i_PKCS8_fn(void **, const unsigned char **, long,
struct der2key_ctx_st *);
struct keytype_desc_st {
const char *keytype_name;
const OSSL_DISPATCH *fns; /* Keymgmt (to pilfer functions from) */
/* The input structure name */
const char *structure_name;
/*
* The EVP_PKEY_xxx type macro. Should be zero for type specific
* structures, non-zero when the outermost structure is PKCS#8 or
* SubjectPublicKeyInfo. This determines which of the function
* pointers below will be used.
*/
int evp_type;
/* The selection mask for OSSL_FUNC_decoder_does_selection() */
int selection_mask;
/* For type specific decoders, we use the corresponding d2i */
d2i_of_void *d2i_private_key; /* From type-specific DER */
d2i_of_void *d2i_public_key; /* From type-specific DER */
d2i_of_void *d2i_key_params; /* From type-specific DER */
d2i_PKCS8_fn *d2i_PKCS8; /* Wrapped in a PrivateKeyInfo */
d2i_of_void *d2i_PUBKEY; /* Wrapped in a SubjectPublicKeyInfo */
/*
* For any key, we may need to check that the key meets expectations.
* This is useful when the same functions can decode several variants
* of a key.
*/
check_key_fn *check_key;
/*
* For any key, we may need to make provider specific adjustments, such
* as ensure the key carries the correct library context.
*/
adjust_key_fn *adjust_key;
/* {type}_free() */
free_key_fn *free_key;
};
/*
* Context used for DER to key decoding.
*/
struct der2key_ctx_st {
PROV_CTX *provctx;
const struct keytype_desc_st *desc;
/* The selection that is passed to der2key_decode() */
int selection;
/* Flag used to signal that a failure is fatal */
unsigned int flag_fatal : 1;
};
typedef void *key_from_pkcs8_t(const PKCS8_PRIV_KEY_INFO *p8inf,
OSSL_LIB_CTX *libctx, const char *propq);
static void *der2key_decode_p8(const unsigned char **input_der,
long input_der_len, struct der2key_ctx_st *ctx,
key_from_pkcs8_t *key_from_pkcs8)
{
PKCS8_PRIV_KEY_INFO *p8inf = NULL;
const X509_ALGOR *alg = NULL;
void *key = NULL;
if ((p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, input_der, input_der_len)) != NULL
&& PKCS8_pkey_get0(NULL, NULL, NULL, &alg, p8inf)
&& OBJ_obj2nid(alg->algorithm) == ctx->desc->evp_type)
key = key_from_pkcs8(p8inf, PROV_LIBCTX_OF(ctx->provctx), NULL);
PKCS8_PRIV_KEY_INFO_free(p8inf);
return key;
}
/* ---------------------------------------------------------------------- */
static OSSL_FUNC_decoder_freectx_fn der2key_freectx;
static OSSL_FUNC_decoder_decode_fn der2key_decode;
static OSSL_FUNC_decoder_export_object_fn der2key_export_object;
static struct der2key_ctx_st *
der2key_newctx(void *provctx, const struct keytype_desc_st *desc)
{
struct der2key_ctx_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx != NULL) {
ctx->provctx = provctx;
ctx->desc = desc;
}
return ctx;
}
static void der2key_freectx(void *vctx)
{
struct der2key_ctx_st *ctx = vctx;
OPENSSL_free(ctx);
}
static int der2key_check_selection(int selection,
const struct keytype_desc_st *desc)
{
/*
* The selections are kinda sorta "levels", i.e. each selection given
* here is assumed to include those following.
*/
int checks[] = {
OSSL_KEYMGMT_SELECT_PRIVATE_KEY,
OSSL_KEYMGMT_SELECT_PUBLIC_KEY,
OSSL_KEYMGMT_SELECT_ALL_PARAMETERS
};
size_t i;
/* The decoder implementations made here support guessing */
if (selection == 0)
return 1;
for (i = 0; i < OSSL_NELEM(checks); i++) {
int check1 = (selection & checks[i]) != 0;
int check2 = (desc->selection_mask & checks[i]) != 0;
/*
* If the caller asked for the currently checked bit(s), return
* whether the decoder description says it's supported.
*/
if (check1)
return check2;
}
/* This should be dead code, but just to be safe... */
return 0;
}
static int der2key_decode(void *vctx, OSSL_CORE_BIO *cin, int selection,
OSSL_CALLBACK *data_cb, void *data_cbarg,
OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
{
struct der2key_ctx_st *ctx = vctx;
unsigned char *der = NULL;
const unsigned char *derp;
long der_len = 0;
void *key = NULL;
int ok = 0;
ctx->selection = selection;
/*
* The caller is allowed to specify 0 as a selection mark, to have the
* structure and key type guessed. For type-specific structures, this
* is not recommended, as some structures are very similar.
* Note that 0 isn't the same as OSSL_KEYMGMT_SELECT_ALL, as the latter
* signifies a private key structure, where everything else is assumed
* to be present as well.
*/
if (selection == 0)
selection = ctx->desc->selection_mask;
if ((selection & ctx->desc->selection_mask) == 0) {
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
return 0;
}
ok = ossl_read_der(ctx->provctx, cin, &der, &der_len);
if (!ok)
goto next;
ok = 0; /* Assume that we fail */
ERR_set_mark();
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
derp = der;
if (ctx->desc->d2i_PKCS8 != NULL) {
key = ctx->desc->d2i_PKCS8(NULL, &derp, der_len, ctx);
if (ctx->flag_fatal) {
ERR_clear_last_mark();
goto end;
}
} else if (ctx->desc->d2i_private_key != NULL) {
key = ctx->desc->d2i_private_key(NULL, &derp, der_len);
}
if (key == NULL && ctx->selection != 0) {
ERR_clear_last_mark();
goto next;
}
}
if (key == NULL && (selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
derp = der;
if (ctx->desc->d2i_PUBKEY != NULL)
key = ctx->desc->d2i_PUBKEY(NULL, &derp, der_len);
else if (ctx->desc->d2i_public_key != NULL)
key = ctx->desc->d2i_public_key(NULL, &derp, der_len);
if (key == NULL && ctx->selection != 0) {
ERR_clear_last_mark();
goto next;
}
}
if (key == NULL && (selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0) {
derp = der;
if (ctx->desc->d2i_key_params != NULL)
key = ctx->desc->d2i_key_params(NULL, &derp, der_len);
if (key == NULL && ctx->selection != 0) {
ERR_clear_last_mark();
goto next;
}
}
if (key == NULL)
ERR_clear_last_mark();
else
ERR_pop_to_mark();
/*
* Last minute check to see if this was the correct type of key. This
* should never lead to a fatal error, i.e. the decoding itself was
* correct, it was just an unexpected key type. This is generally for
* classes of key types that have subtle variants, like RSA-PSS keys as
* opposed to plain RSA keys.
*/
if (key != NULL
&& ctx->desc->check_key != NULL
&& !ctx->desc->check_key(key, ctx)) {
ctx->desc->free_key(key);
key = NULL;
}
if (key != NULL && ctx->desc->adjust_key != NULL)
ctx->desc->adjust_key(key, ctx);
next:
/*
* Indicated that we successfully decoded something, or not at all.
* Ending up "empty handed" is not an error.
*/
ok = 1;
/*
* We free memory here so it's not held up during the callback, because
* we know the process is recursive and the allocated chunks of memory
* add up.
*/
OPENSSL_free(der);
der = NULL;
if (key != NULL) {
OSSL_PARAM params[4];
int object_type = OSSL_OBJECT_PKEY;
params[0] =
OSSL_PARAM_construct_int(OSSL_OBJECT_PARAM_TYPE, &object_type);
params[1] =
OSSL_PARAM_construct_utf8_string(OSSL_OBJECT_PARAM_DATA_TYPE,
(char *)ctx->desc->keytype_name,
0);
/* The address of the key becomes the octet string */
params[2] =
OSSL_PARAM_construct_octet_string(OSSL_OBJECT_PARAM_REFERENCE,
&key, sizeof(key));
params[3] = OSSL_PARAM_construct_end();
ok = data_cb(params, data_cbarg);
}
end:
ctx->desc->free_key(key);
OPENSSL_free(der);
return ok;
}
static int der2key_export_object(void *vctx,
const void *reference, size_t reference_sz,
OSSL_CALLBACK *export_cb, void *export_cbarg)
{
struct der2key_ctx_st *ctx = vctx;
OSSL_FUNC_keymgmt_export_fn *export =
ossl_prov_get_keymgmt_export(ctx->desc->fns);
void *keydata;
if (reference_sz == sizeof(keydata) && export != NULL) {
/* The contents of the reference is the address to our object */
keydata = *(void **)reference;
return export(keydata, ctx->selection, export_cb, export_cbarg);
}
return 0;
}
/* ---------------------------------------------------------------------- */
#ifndef OPENSSL_NO_DH
# define dh_evp_type EVP_PKEY_DH
# define dh_d2i_private_key NULL
# define dh_d2i_public_key NULL
# define dh_d2i_key_params (d2i_of_void *)d2i_DHparams
static void *dh_d2i_PKCS8(void **key, const unsigned char **der, long der_len,
struct der2key_ctx_st *ctx)
{
return der2key_decode_p8(der, der_len, ctx,
(key_from_pkcs8_t *)ossl_dh_key_from_pkcs8);
}
# define dh_d2i_PUBKEY (d2i_of_void *)ossl_d2i_DH_PUBKEY
# define dh_free (free_key_fn *)DH_free
# define dh_check NULL
static void dh_adjust(void *key, struct der2key_ctx_st *ctx)
{
ossl_dh_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx));
}
# define dhx_evp_type EVP_PKEY_DHX
# define dhx_d2i_private_key NULL
# define dhx_d2i_public_key NULL
# define dhx_d2i_key_params (d2i_of_void *)d2i_DHxparams
# define dhx_d2i_PKCS8 dh_d2i_PKCS8
# define dhx_d2i_PUBKEY (d2i_of_void *)ossl_d2i_DHx_PUBKEY
# define dhx_free (free_key_fn *)DH_free
# define dhx_check NULL
# define dhx_adjust dh_adjust
#endif
/* ---------------------------------------------------------------------- */
#ifndef OPENSSL_NO_DSA
# define dsa_evp_type EVP_PKEY_DSA
# define dsa_d2i_private_key (d2i_of_void *)d2i_DSAPrivateKey
# define dsa_d2i_public_key (d2i_of_void *)d2i_DSAPublicKey
# define dsa_d2i_key_params (d2i_of_void *)d2i_DSAparams
static void *dsa_d2i_PKCS8(void **key, const unsigned char **der, long der_len,
struct der2key_ctx_st *ctx)
{
return der2key_decode_p8(der, der_len, ctx,
(key_from_pkcs8_t *)ossl_dsa_key_from_pkcs8);
}
# define dsa_d2i_PUBKEY (d2i_of_void *)ossl_d2i_DSA_PUBKEY
# define dsa_free (free_key_fn *)DSA_free
# define dsa_check NULL
static void dsa_adjust(void *key, struct der2key_ctx_st *ctx)
{
ossl_dsa_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx));
}
#endif
/* ---------------------------------------------------------------------- */
#ifndef OPENSSL_NO_EC
# define ec_evp_type EVP_PKEY_EC
# define ec_d2i_private_key (d2i_of_void *)d2i_ECPrivateKey
# define ec_d2i_public_key NULL
# define ec_d2i_key_params (d2i_of_void *)d2i_ECParameters
static void *ec_d2i_PKCS8(void **key, const unsigned char **der, long der_len,
struct der2key_ctx_st *ctx)
{
return der2key_decode_p8(der, der_len, ctx,
(key_from_pkcs8_t *)ossl_ec_key_from_pkcs8);
}
# define ec_d2i_PUBKEY (d2i_of_void *)d2i_EC_PUBKEY
# define ec_free (free_key_fn *)EC_KEY_free
static int ec_check(void *key, struct der2key_ctx_st *ctx)
{
/* We're trying to be clever by comparing two truths */
int sm2 = (EC_KEY_get_flags(key) & EC_FLAG_SM2_RANGE) != 0;
return sm2 == (ctx->desc->evp_type == EVP_PKEY_SM2);
}
static void ec_adjust(void *key, struct der2key_ctx_st *ctx)
{
ossl_ec_key_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx));
}
/*
* ED25519, ED448, X25519, X448 only implement PKCS#8 and SubjectPublicKeyInfo,
* so no d2i functions to be had.
*/
static void *ecx_d2i_PKCS8(void **key, const unsigned char **der, long der_len,
struct der2key_ctx_st *ctx)
{
return der2key_decode_p8(der, der_len, ctx,
(key_from_pkcs8_t *)ossl_ecx_key_from_pkcs8);
}
static void ecx_key_adjust(void *key, struct der2key_ctx_st *ctx)
{
ossl_ecx_key_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx));
}
# define ed25519_evp_type EVP_PKEY_ED25519
# define ed25519_d2i_private_key NULL
# define ed25519_d2i_public_key NULL
# define ed25519_d2i_key_params NULL
# define ed25519_d2i_PKCS8 ecx_d2i_PKCS8
# define ed25519_d2i_PUBKEY (d2i_of_void *)ossl_d2i_ED25519_PUBKEY
# define ed25519_free (free_key_fn *)ossl_ecx_key_free
# define ed25519_check NULL
# define ed25519_adjust ecx_key_adjust
# define ed448_evp_type EVP_PKEY_ED448
# define ed448_d2i_private_key NULL
# define ed448_d2i_public_key NULL
# define ed448_d2i_key_params NULL
# define ed448_d2i_PKCS8 ecx_d2i_PKCS8
# define ed448_d2i_PUBKEY (d2i_of_void *)ossl_d2i_ED448_PUBKEY
# define ed448_free (free_key_fn *)ossl_ecx_key_free
# define ed448_check NULL
# define ed448_adjust ecx_key_adjust
# define x25519_evp_type EVP_PKEY_X25519
# define x25519_d2i_private_key NULL
# define x25519_d2i_public_key NULL
# define x25519_d2i_key_params NULL
# define x25519_d2i_PKCS8 ecx_d2i_PKCS8
# define x25519_d2i_PUBKEY (d2i_of_void *)ossl_d2i_X25519_PUBKEY
# define x25519_free (free_key_fn *)ossl_ecx_key_free
# define x25519_check NULL
# define x25519_adjust ecx_key_adjust
# define x448_evp_type EVP_PKEY_X448
# define x448_d2i_private_key NULL
# define x448_d2i_public_key NULL
# define x448_d2i_key_params NULL
# define x448_d2i_PKCS8 ecx_d2i_PKCS8
# define x448_d2i_PUBKEY (d2i_of_void *)ossl_d2i_X448_PUBKEY
# define x448_free (free_key_fn *)ossl_ecx_key_free
# define x448_check NULL
# define x448_adjust ecx_key_adjust
# ifndef OPENSSL_NO_SM2
# define sm2_evp_type EVP_PKEY_SM2
# define sm2_d2i_private_key (d2i_of_void *)d2i_ECPrivateKey
# define sm2_d2i_public_key NULL
# define sm2_d2i_key_params (d2i_of_void *)d2i_ECParameters
static void *sm2_d2i_PKCS8(void **key, const unsigned char **der, long der_len,
struct der2key_ctx_st *ctx)
{
return der2key_decode_p8(der, der_len, ctx,
(key_from_pkcs8_t *)ossl_ec_key_from_pkcs8);
}
# define sm2_d2i_PUBKEY (d2i_of_void *)d2i_EC_PUBKEY
# define sm2_free (free_key_fn *)EC_KEY_free
# define sm2_check ec_check
# define sm2_adjust ec_adjust
# endif
#endif
/* ---------------------------------------------------------------------- */
#define rsa_evp_type EVP_PKEY_RSA
#define rsa_d2i_private_key (d2i_of_void *)d2i_RSAPrivateKey
#define rsa_d2i_public_key (d2i_of_void *)d2i_RSAPublicKey
#define rsa_d2i_key_params NULL
static void *rsa_d2i_PKCS8(void **key, const unsigned char **der, long der_len,
struct der2key_ctx_st *ctx)
{
return der2key_decode_p8(der, der_len, ctx,
(key_from_pkcs8_t *)ossl_rsa_key_from_pkcs8);
}
#define rsa_d2i_PUBKEY (d2i_of_void *)d2i_RSA_PUBKEY
#define rsa_free (free_key_fn *)RSA_free
static int rsa_check(void *key, struct der2key_ctx_st *ctx)
{
switch (RSA_test_flags(key, RSA_FLAG_TYPE_MASK)) {
case RSA_FLAG_TYPE_RSA:
return ctx->desc->evp_type == EVP_PKEY_RSA;
case RSA_FLAG_TYPE_RSASSAPSS:
return ctx->desc->evp_type == EVP_PKEY_RSA_PSS;
}
/* Currently unsupported RSA key type */
return 0;
}
static void rsa_adjust(void *key, struct der2key_ctx_st *ctx)
{
ossl_rsa_set0_libctx(key, PROV_LIBCTX_OF(ctx->provctx));
}
#define rsapss_evp_type EVP_PKEY_RSA_PSS
#define rsapss_d2i_private_key (d2i_of_void *)d2i_RSAPrivateKey
#define rsapss_d2i_public_key (d2i_of_void *)d2i_RSAPublicKey
#define rsapss_d2i_key_params NULL
#define rsapss_d2i_PKCS8 rsa_d2i_PKCS8
#define rsapss_d2i_PUBKEY (d2i_of_void *)d2i_RSA_PUBKEY
#define rsapss_free (free_key_fn *)RSA_free
#define rsapss_check rsa_check
#define rsapss_adjust rsa_adjust
/* ---------------------------------------------------------------------- */
/*
* The DO_ macros help define the selection mask and the method functions
* for each kind of object we want to decode.
*/
#define DO_type_specific_keypair(keytype) \
"type-specific", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_KEYPAIR ), \
keytype##_d2i_private_key, \
keytype##_d2i_public_key, \
NULL, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_type_specific_pub(keytype) \
"type-specific", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_PUBLIC_KEY ), \
NULL, \
keytype##_d2i_public_key, \
NULL, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_type_specific_priv(keytype) \
"type-specific", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_PRIVATE_KEY ), \
keytype##_d2i_private_key, \
NULL, \
NULL, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_type_specific_params(keytype) \
"type-specific", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \
NULL, \
NULL, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_type_specific(keytype) \
"type-specific", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_ALL ), \
keytype##_d2i_private_key, \
keytype##_d2i_public_key, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_type_specific_no_pub(keytype) \
"type-specific", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_PRIVATE_KEY \
| OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \
keytype##_d2i_private_key, \
NULL, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_PrivateKeyInfo(keytype) \
"PrivateKeyInfo", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_PRIVATE_KEY ), \
NULL, \
NULL, \
NULL, \
keytype##_d2i_PKCS8, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_SubjectPublicKeyInfo(keytype) \
"SubjectPublicKeyInfo", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_PUBLIC_KEY ), \
NULL, \
NULL, \
NULL, \
NULL, \
keytype##_d2i_PUBKEY, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_DH(keytype) \
"DH", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \
NULL, \
NULL, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_DHX(keytype) \
"DHX", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \
NULL, \
NULL, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_DSA(keytype) \
"DSA", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_ALL ), \
keytype##_d2i_private_key, \
keytype##_d2i_public_key, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_EC(keytype) \
"EC", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_PRIVATE_KEY \
| OSSL_KEYMGMT_SELECT_ALL_PARAMETERS ), \
keytype##_d2i_private_key, \
NULL, \
keytype##_d2i_key_params, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
#define DO_RSA(keytype) \
"RSA", keytype##_evp_type, \
( OSSL_KEYMGMT_SELECT_KEYPAIR ), \
keytype##_d2i_private_key, \
keytype##_d2i_public_key, \
NULL, \
NULL, \
NULL, \
keytype##_check, \
keytype##_adjust, \
keytype##_free
/*
* MAKE_DECODER is the single driver for creating OSSL_DISPATCH tables.
* It takes the following arguments:
*
* keytype_name The implementation key type as a string.
* keytype The implementation key type. This must correspond exactly
* to our existing keymgmt keytype names... in other words,
* there must exist an ossl_##keytype##_keymgmt_functions.
* type The type name for the set of functions that implement the
* decoder for the key type. This isn't necessarily the same
* as keytype. For example, the key types ed25519, ed448,
* x25519 and x448 are all handled by the same functions with
* the common type name ecx.
* kind The kind of support to implement. This translates into
* the DO_##kind macros above, to populate the keytype_desc_st
* structure.
*/
#define MAKE_DECODER(keytype_name, keytype, type, kind) \
static const struct keytype_desc_st kind##_##keytype##_desc = \
{ keytype_name, ossl_##keytype##_keymgmt_functions, \
DO_##kind(keytype) }; \
\
static OSSL_FUNC_decoder_newctx_fn kind##_der2##keytype##_newctx; \
\
static void *kind##_der2##keytype##_newctx(void *provctx) \
{ \
return der2key_newctx(provctx, &kind##_##keytype##_desc); \
} \
static int kind##_der2##keytype##_does_selection(void *provctx, \
int selection) \
{ \
return der2key_check_selection(selection, \
&kind##_##keytype##_desc); \
} \
const OSSL_DISPATCH \
ossl_##kind##_der_to_##keytype##_decoder_functions[] = { \
{ OSSL_FUNC_DECODER_NEWCTX, \
(void (*)(void))kind##_der2##keytype##_newctx }, \
{ OSSL_FUNC_DECODER_FREECTX, \
(void (*)(void))der2key_freectx }, \
{ OSSL_FUNC_DECODER_DOES_SELECTION, \
(void (*)(void))kind##_der2##keytype##_does_selection }, \
{ OSSL_FUNC_DECODER_DECODE, \
(void (*)(void))der2key_decode }, \
{ OSSL_FUNC_DECODER_EXPORT_OBJECT, \
(void (*)(void))der2key_export_object }, \
{ 0, NULL } \
}
#ifndef OPENSSL_NO_DH
MAKE_DECODER("DH", dh, dh, PrivateKeyInfo);
MAKE_DECODER("DH", dh, dh, SubjectPublicKeyInfo);
MAKE_DECODER("DH", dh, dh, type_specific_params);
MAKE_DECODER("DH", dh, dh, DH);
MAKE_DECODER("DHX", dhx, dhx, PrivateKeyInfo);
MAKE_DECODER("DHX", dhx, dhx, SubjectPublicKeyInfo);
MAKE_DECODER("DHX", dhx, dhx, type_specific_params);
MAKE_DECODER("DHX", dhx, dhx, DHX);
#endif
#ifndef OPENSSL_NO_DSA
MAKE_DECODER("DSA", dsa, dsa, PrivateKeyInfo);
MAKE_DECODER("DSA", dsa, dsa, SubjectPublicKeyInfo);
MAKE_DECODER("DSA", dsa, dsa, type_specific);
MAKE_DECODER("DSA", dsa, dsa, DSA);
#endif
#ifndef OPENSSL_NO_EC
MAKE_DECODER("EC", ec, ec, PrivateKeyInfo);
MAKE_DECODER("EC", ec, ec, SubjectPublicKeyInfo);
MAKE_DECODER("EC", ec, ec, type_specific_no_pub);
MAKE_DECODER("EC", ec, ec, EC);
MAKE_DECODER("X25519", x25519, ecx, PrivateKeyInfo);
MAKE_DECODER("X25519", x25519, ecx, SubjectPublicKeyInfo);
MAKE_DECODER("X448", x448, ecx, PrivateKeyInfo);
MAKE_DECODER("X448", x448, ecx, SubjectPublicKeyInfo);
MAKE_DECODER("ED25519", ed25519, ecx, PrivateKeyInfo);
MAKE_DECODER("ED25519", ed25519, ecx, SubjectPublicKeyInfo);
MAKE_DECODER("ED448", ed448, ecx, PrivateKeyInfo);
MAKE_DECODER("ED448", ed448, ecx, SubjectPublicKeyInfo);
# ifndef OPENSSL_NO_SM2
MAKE_DECODER("SM2", sm2, ec, PrivateKeyInfo);
MAKE_DECODER("SM2", sm2, ec, SubjectPublicKeyInfo);
# endif
#endif
MAKE_DECODER("RSA", rsa, rsa, PrivateKeyInfo);
MAKE_DECODER("RSA", rsa, rsa, SubjectPublicKeyInfo);
MAKE_DECODER("RSA", rsa, rsa, type_specific_keypair);
MAKE_DECODER("RSA", rsa, rsa, RSA);
MAKE_DECODER("RSA-PSS", rsapss, rsapss, PrivateKeyInfo);
MAKE_DECODER("RSA-PSS", rsapss, rsapss, SubjectPublicKeyInfo);
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