/*
* Copyright 2006-2018 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
*/
/*
* RSA low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/bn.h>
#include <openssl/cms.h>
#include <openssl/core_names.h>
#include "internal/param_build.h"
#include "crypto/asn1.h"
#include "crypto/evp.h"
#include "crypto/rsa.h"
#include "rsa_local.h"
#ifndef OPENSSL_NO_CMS
static int rsa_cms_sign(CMS_SignerInfo *si);
static int rsa_cms_verify(CMS_SignerInfo *si);
static int rsa_cms_decrypt(CMS_RecipientInfo *ri);
static int rsa_cms_encrypt(CMS_RecipientInfo *ri);
#endif
static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg);
/* Set any parameters associated with pkey */
static int rsa_param_encode(const EVP_PKEY *pkey,
ASN1_STRING **pstr, int *pstrtype)
{
const RSA *rsa = pkey->pkey.rsa;
*pstr = NULL;
/* If RSA it's just NULL type */
if (pkey->ameth->pkey_id != EVP_PKEY_RSA_PSS) {
*pstrtype = V_ASN1_NULL;
return 1;
}
/* If no PSS parameters we omit parameters entirely */
if (rsa->pss == NULL) {
*pstrtype = V_ASN1_UNDEF;
return 1;
}
/* Encode PSS parameters */
if (ASN1_item_pack(rsa->pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), pstr) == NULL)
return 0;
*pstrtype = V_ASN1_SEQUENCE;
return 1;
}
/* Decode any parameters and set them in RSA structure */
static int rsa_param_decode(RSA *rsa, const X509_ALGOR *alg)
{
const ASN1_OBJECT *algoid;
const void *algp;
int algptype;
X509_ALGOR_get0(&algoid, &algptype, &algp, alg);
if (OBJ_obj2nid(algoid) != EVP_PKEY_RSA_PSS)
return 1;
if (algptype == V_ASN1_UNDEF)
return 1;
if (algptype != V_ASN1_SEQUENCE) {
RSAerr