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/*
* COPYRIGHT (C) 2006,2007
* THE REGENTS OF THE UNIVERSITY OF MICHIGAN
* ALL RIGHTS RESERVED
*
* Permission is granted to use, copy, create derivative works
* and redistribute this software and such derivative works
* for any purpose, so long as the name of The University of
* Michigan is not used in any advertising or publicity
* pertaining to the use of distribution of this software
* without specific, written prior authorization. If the
* above copyright notice or any other identification of the
* University of Michigan is included in any copy of any
* portion of this software, then the disclaimer below must
* also be included.
*
* THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION
* FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY
* PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF
* MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
* WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
* REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE
* FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR
* CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING
* OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
* IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGES.
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2018 OmniOS Community Edition (OmniOSce) Association.
* Copyright 2018 RackTop Systems.
*/
#ifndef _PKINIT_CRYPTO_OPENSSL_H
#define _PKINIT_CRYPTO_OPENSSL_H
#include <openssl/bn.h>
#include <openssl/dh.h>
#include <openssl/x509.h>
#include <openssl/pkcs7.h>
#include <openssl/pkcs12.h>
#include <openssl/obj_mac.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/sha.h>
#include <openssl/asn1.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
#include <openssl/asn1_mac.h>
#else
#include <openssl/asn1t.h>
#endif
#include "pkinit.h"
#define DN_BUF_LEN 256
#define MAX_CREDS_ALLOWED 20
struct _pkinit_cred_info {
X509 *cert;
EVP_PKEY *key;
#ifndef WITHOUT_PKCS11
CK_BYTE_PTR cert_id;
int cert_id_len;
#endif
};
typedef struct _pkinit_cred_info * pkinit_cred_info;
struct _pkinit_identity_crypto_context {
pkinit_cred_info creds[MAX_CREDS_ALLOWED+1];
STACK_OF(X509) *my_certs; /* available user certs */
int cert_index; /* cert to use out of available certs*/
EVP_PKEY *my_key; /* available user keys if in filesystem */
STACK_OF(X509) *trustedCAs; /* available trusted ca certs */
STACK_OF(X509) *intermediateCAs; /* available intermediate ca certs */
STACK_OF(X509_CRL) *revoked; /* available crls */
int pkcs11_method;
krb5_prompter_fct prompter;
void *prompter_data;
#ifndef WITHOUT_PKCS11
char *p11_module_name;
CK_SLOT_ID slotid;
char *token_label;
char *cert_label;
char *PIN; /* Solaris Kerberos: */
/* These are crypto-specific */
void *p11_module;
CK_SESSION_HANDLE session;
CK_FUNCTION_LIST_PTR p11;
CK_BYTE_PTR cert_id;
int cert_id_len;
CK_MECHANISM_TYPE mech;
/* Solaris Kerberos: need to keep some state */
uint_t p11flags;
/*
* Solaris Kerberos:
* If PKCS#11 is already being used by the process then C_Finalize should
* not be called by pkinit as it would invalidate any PKCS#11 sessions the
* process was using prior to loading the pkinit plugin. "finalize_pkcs11"
* indicates whether or not C_Finalize should be called by pkinit.
*/
krb5_boolean finalize_pkcs11;
#endif
};
/* Solaris Kerberos: need to know if login was done */
#define C_LOGIN_DONE 0x1 /* The session is logged in. */
#define C_PROMPTED_USER 0x2 /* The user was prompted for token. */
#define C_SKIP_PKCS11_AUTH 0x4 /* User does not want to do PKCS11 auth */
struct _pkinit_plg_crypto_context {
DH *dh_1024;
DH *dh_2048;
DH *dh_4096;
ASN1_OBJECT *id_pkinit_authData;
ASN1_OBJECT *id_pkinit_DHKeyData;
ASN1_OBJECT *id_pkinit_rkeyData;
ASN1_OBJECT *id_pkinit_san;
ASN1_OBJECT *id_ms_san_upn;
ASN1_OBJECT *id_pkinit_KPClientAuth;
ASN1_OBJECT *id_pkinit_KPKdc;
ASN1_OBJECT *id_ms_kp_sc_logon;
ASN1_OBJECT *id_kp_serverAuth;
};
struct _pkinit_req_crypto_context {
X509 *received_cert;
DH *dh;
};
#define CERT_MAGIC 0x53534c43
struct _pkinit_cert_data {
unsigned int magic;
pkinit_plg_crypto_context plgctx;
pkinit_req_crypto_context reqctx;
pkinit_identity_crypto_context idctx;
pkinit_cred_info cred;
unsigned int index; /* Index of this cred in the creds[] array */
};
#define ITER_MAGIC 0x53534c49
struct _pkinit_cert_iter_data {
unsigned int magic;
pkinit_plg_crypto_context plgctx;
pkinit_req_crypto_context reqctx;
pkinit_identity_crypto_context idctx;
unsigned int index;
};
/* Solaris Kerberos */
static krb5_error_code openssl_init(void);
static krb5_error_code pkinit_init_pkinit_oids(pkinit_plg_crypto_context );
static void pkinit_fini_pkinit_oids(pkinit_plg_crypto_context );
static krb5_error_code pkinit_init_dh_params(pkinit_plg_crypto_context );
static void pkinit_fini_dh_params(pkinit_plg_crypto_context );
static krb5_error_code pkinit_init_certs(pkinit_identity_crypto_context ctx);
static void pkinit_fini_certs(pkinit_identity_crypto_context ctx);
static krb5_error_code pkinit_init_pkcs11(pkinit_identity_crypto_context ctx);
static void pkinit_fini_pkcs11(pkinit_identity_crypto_context ctx);
static krb5_error_code pkinit_encode_dh_params
(const BIGNUM *, const BIGNUM *, const BIGNUM *,
unsigned char **, unsigned int *);
static DH *pkinit_decode_dh_params
(DH **, unsigned char **, unsigned int );
static int pkinit_check_dh_params
(const BIGNUM *p1, const BIGNUM *p2, const BIGNUM *g1,
const BIGNUM *q1);
static krb5_error_code pkinit_sign_data
(krb5_context context, pkinit_identity_crypto_context cryptoctx,
unsigned char *data, unsigned int data_len,
unsigned char **sig, unsigned int *sig_len);
static krb5_error_code create_signature
(unsigned char **, unsigned int *, unsigned char *, unsigned int,
EVP_PKEY *pkey);
static krb5_error_code pkinit_decode_data
(krb5_context context, pkinit_identity_crypto_context cryptoctx,
unsigned char *data, unsigned int data_len,
unsigned char **decoded, unsigned int *decoded_len);
static krb5_error_code decode_data
(unsigned char **, unsigned int *, unsigned char *, unsigned int,
EVP_PKEY *pkey, X509 *cert);
#ifdef DEBUG_DH
static void print_dh(DH *, char *);
static void print_pubkey(BIGNUM *, char *);
#endif
static int prepare_enc_data
(unsigned char *indata, int indata_len, unsigned char **outdata,
int *outdata_len);
static int openssl_callback (int, X509_STORE_CTX *);
static int openssl_callback_ignore_crls (int, X509_STORE_CTX *);
static int pkcs7_decrypt
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
PKCS7 *p7, BIO *bio);
static BIO * pkcs7_dataDecode
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
PKCS7 *p7);
static ASN1_OBJECT * pkinit_pkcs7type2oid
(pkinit_plg_crypto_context plg_cryptoctx, int pkcs7_type);
static krb5_error_code pkinit_create_sequence_of_principal_identifiers
(krb5_context context, pkinit_plg_crypto_context plg_cryptoctx,
pkinit_req_crypto_context req_cryptoctx,
pkinit_identity_crypto_context id_cryptoctx,
int type, krb5_data **out_data);
#ifndef WITHOUT_PKCS11
static krb5_error_code pkinit_find_private_key
(pkinit_identity_crypto_context, CK_ATTRIBUTE_TYPE usage,
CK_OBJECT_HANDLE *objp);
static krb5_error_code pkinit_login
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
CK_TOKEN_INFO *tip);
static void * pkinit_C_LoadModule(const char *modname, CK_FUNCTION_LIST_PTR_PTR p11p);
static CK_RV pkinit_C_UnloadModule(void *handle);
#ifdef SILLYDECRYPT
CK_RV pkinit_C_Decrypt
(pkinit_identity_crypto_context id_cryptoctx,
CK_BYTE_PTR pEncryptedData, CK_ULONG ulEncryptedDataLen,
CK_BYTE_PTR pData, CK_ULONG_PTR pulDataLen);
#endif
static krb5_error_code pkinit_sign_data_pkcs11
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
unsigned char *data, unsigned int data_len,
unsigned char **sig, unsigned int *sig_len);
static krb5_error_code pkinit_decode_data_pkcs11
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
unsigned char *data, unsigned int data_len,
unsigned char **decoded_data, unsigned int *decoded_data_len);
#endif /* WITHOUT_PKCS11 */
static krb5_error_code pkinit_sign_data_fs
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
unsigned char *data, unsigned int data_len,
unsigned char **sig, unsigned int *sig_len);
static krb5_error_code pkinit_decode_data_fs
(krb5_context context, pkinit_identity_crypto_context id_cryptoctx,
unsigned char *data, unsigned int data_len,
unsigned char **decoded_data, unsigned int *decoded_data_len);
static krb5_error_code der_decode_data
(unsigned char *, long, unsigned char **, long *);
static krb5_error_code
create_krb5_invalidCertificates(krb5_context context,
pkinit_plg_crypto_context plg_cryptoctx,
pkinit_req_crypto_context req_cryptoctx,
pkinit_identity_crypto_context id_cryptoctx,
krb5_external_principal_identifier *** ids);
static krb5_error_code
create_identifiers_from_stack(STACK_OF(X509) *sk,
krb5_external_principal_identifier *** ids);
#ifdef LONGHORN_BETA_COMPAT
static int
wrap_signeddata(unsigned char *data, unsigned int data_len,
unsigned char **out, unsigned int *out_len,
int is_longhorn_server);
#else
static int
wrap_signeddata(unsigned char *data, unsigned int data_len,
unsigned char **out, unsigned int *out_len);
#endif
/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
#define ku_reject(x, usage) \
(((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
#else
#define ku_reject(x, usage) \
((X509_get_extension_flags(x) & EXFLAG_KUSAGE) && \
!(X509_get_key_usage(x) & (usage)))
#endif
static char *
pkinit_pkcs11_code_to_text(int err);
#endif /* _PKINIT_CRYPTO_OPENSSL_H */
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