1 /* 2 * COPYRIGHT (C) 2006,2007 3 * THE REGENTS OF THE UNIVERSITY OF MICHIGAN 4 * ALL RIGHTS RESERVED 5 * 6 * Permission is granted to use, copy, create derivative works 7 * and redistribute this software and such derivative works 8 * for any purpose, so long as the name of The University of 9 * Michigan is not used in any advertising or publicity 10 * pertaining to the use of distribution of this software 11 * without specific, written prior authorization. If the 12 * above copyright notice or any other identification of the 13 * University of Michigan is included in any copy of any 14 * portion of this software, then the disclaimer below must 15 * also be included. 16 * 17 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION 18 * FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY 19 * PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF 20 * MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING 21 * WITHOUT LIMITATION THE IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE 23 * REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE 24 * FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR 25 * CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING 26 * OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN 27 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGES. 29 */ 30 31 /* 32 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 33 * Use is subject to license terms. 34 */ 35 36 #ifndef _PKINIT_CRYPTO_OPENSSL_H 37 #define _PKINIT_CRYPTO_OPENSSL_H 38 39 #include <openssl/bn.h> 40 #include <openssl/dh.h> 41 #include <openssl/x509.h> 42 #include <openssl/pkcs7.h> 43 #include <openssl/pkcs12.h> 44 #include <openssl/obj_mac.h> 45 #include <openssl/x509v3.h> 46 #include <openssl/err.h> 47 #include <openssl/evp.h> 48 #include <openssl/asn1_mac.h> 49 #include <openssl/sha.h> 50 #include <openssl/asn1.h> 51 #include <openssl/pem.h> 52 53 #include "pkinit.h" 54 55 #define DN_BUF_LEN 256 56 #define MAX_CREDS_ALLOWED 20 57 58 struct _pkinit_cred_info { 59 X509 *cert; 60 EVP_PKEY *key; 61 #ifndef WITHOUT_PKCS11 62 CK_BYTE_PTR cert_id; 63 int cert_id_len; 64 #endif 65 }; 66 typedef struct _pkinit_cred_info * pkinit_cred_info; 67 68 struct _pkinit_identity_crypto_context { 69 pkinit_cred_info creds[MAX_CREDS_ALLOWED+1]; 70 STACK_OF(X509) *my_certs; /* available user certs */ 71 int cert_index; /* cert to use out of available certs*/ 72 EVP_PKEY *my_key; /* available user keys if in filesystem */ 73 STACK_OF(X509) *trustedCAs; /* available trusted ca certs */ 74 STACK_OF(X509) *intermediateCAs; /* available intermediate ca certs */ 75 STACK_OF(X509_CRL) *revoked; /* available crls */ 76 int pkcs11_method; 77 krb5_prompter_fct prompter; 78 void *prompter_data; 79 #ifndef WITHOUT_PKCS11 80 char *p11_module_name; 81 CK_SLOT_ID slotid; 82 char *token_label; 83 char *cert_label; 84 /* These are crypto-specific */ 85 void *p11_module; 86 CK_SESSION_HANDLE session; 87 CK_FUNCTION_LIST_PTR p11; 88 CK_BYTE_PTR cert_id; 89 int cert_id_len; 90 CK_MECHANISM_TYPE mech; 91 /* Solaris Kerberos: need to keep some state */ 92 uint_t p11flags; 93 /* 94 * Solaris Kerberos: 95 * If PKCS#11 is already being used by the process then C_Finalize should 96 * not be called by pkinit as it would invalidate any PKCS#11 sessions the 97 * process was using prior to loading the pkinit plugin. "finalize_pkcs11" 98 * indicates whether or not C_Finalize should be called by pkinit. 99 */ 100 krb5_boolean finalize_pkcs11; 101 #endif 102 }; 103 104 /* Solaris Kerberos: need to know if login was done */ 105 #define C_LOGIN_DONE 0x1 /* The session is logged in. */ 106 107 struct _pkinit_plg_crypto_context { 108 DH *dh_1024; 109 DH *dh_2048; 110 DH *dh_4096; 111 ASN1_OBJECT *id_pkinit_authData; 112 ASN1_OBJECT *id_pkinit_authData9; 113 ASN1_OBJECT *id_pkinit_DHKeyData; 114 ASN1_OBJECT *id_pkinit_rkeyData; 115 ASN1_OBJECT *id_pkinit_san; 116 ASN1_OBJECT *id_ms_san_upn; 117 ASN1_OBJECT *id_pkinit_KPClientAuth; 118 ASN1_OBJECT *id_pkinit_KPKdc; 119 ASN1_OBJECT *id_ms_kp_sc_logon; 120 ASN1_OBJECT *id_kp_serverAuth; 121 }; 122 123 struct _pkinit_req_crypto_context { 124 X509 *received_cert; 125 DH *dh; 126 }; 127 128 #define CERT_MAGIC 0x53534c43 129 struct _pkinit_cert_data { 130 unsigned int magic; 131 pkinit_plg_crypto_context plgctx; 132 pkinit_req_crypto_context reqctx; 133 pkinit_identity_crypto_context idctx; 134 pkinit_cred_info cred; 135 unsigned int index; /* Index of this cred in the creds[] array */ 136 }; 137 138 #define ITER_MAGIC 0x53534c49 139 struct _pkinit_cert_iter_data { 140 unsigned int magic; 141 pkinit_plg_crypto_context plgctx; 142 pkinit_req_crypto_context reqctx; 143 pkinit_identity_crypto_context idctx; 144 unsigned int index; 145 }; 146 147 static void openssl_init(void); 148 149 static krb5_error_code pkinit_init_pkinit_oids(pkinit_plg_crypto_context ); 150 static void pkinit_fini_pkinit_oids(pkinit_plg_crypto_context ); 151 152 static krb5_error_code pkinit_init_dh_params(pkinit_plg_crypto_context ); 153 static void pkinit_fini_dh_params(pkinit_plg_crypto_context ); 154 155 static krb5_error_code pkinit_init_certs(pkinit_identity_crypto_context ctx); 156 static void pkinit_fini_certs(pkinit_identity_crypto_context ctx); 157 158 static krb5_error_code pkinit_init_pkcs11(pkinit_identity_crypto_context ctx); 159 static void pkinit_fini_pkcs11(pkinit_identity_crypto_context ctx); 160 161 static krb5_error_code pkinit_encode_dh_params 162 (BIGNUM *, BIGNUM *, BIGNUM *, unsigned char **, unsigned int *); 163 static DH *pkinit_decode_dh_params 164 (DH **, unsigned char **, unsigned int ); 165 static int pkinit_check_dh_params 166 (BIGNUM * p1, BIGNUM * p2, BIGNUM * g1, BIGNUM * q1); 167 168 static krb5_error_code pkinit_sign_data 169 (krb5_context context, pkinit_identity_crypto_context cryptoctx, 170 unsigned char *data, unsigned int data_len, 171 unsigned char **sig, unsigned int *sig_len); 172 173 static krb5_error_code create_signature 174 (unsigned char **, unsigned int *, unsigned char *, unsigned int, 175 EVP_PKEY *pkey); 176 177 static krb5_error_code pkinit_decode_data 178 (krb5_context context, pkinit_identity_crypto_context cryptoctx, 179 unsigned char *data, unsigned int data_len, 180 unsigned char **decoded, unsigned int *decoded_len); 181 182 static krb5_error_code decode_data 183 (unsigned char **, unsigned int *, unsigned char *, unsigned int, 184 EVP_PKEY *pkey, X509 *cert); 185 186 #ifdef DEBUG_DH 187 static void print_dh(DH *, char *); 188 static void print_pubkey(BIGNUM *, char *); 189 #endif 190 191 static int prepare_enc_data 192 (unsigned char *indata, int indata_len, unsigned char **outdata, 193 int *outdata_len); 194 195 static int openssl_callback (int, X509_STORE_CTX *); 196 static int openssl_callback_ignore_crls (int, X509_STORE_CTX *); 197 198 static int pkcs7_decrypt 199 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 200 PKCS7 *p7, BIO *bio); 201 202 static BIO * pkcs7_dataDecode 203 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 204 PKCS7 *p7); 205 206 static ASN1_OBJECT * pkinit_pkcs7type2oid 207 (pkinit_plg_crypto_context plg_cryptoctx, int pkcs7_type); 208 209 static krb5_error_code pkinit_create_sequence_of_principal_identifiers 210 (krb5_context context, pkinit_plg_crypto_context plg_cryptoctx, 211 pkinit_req_crypto_context req_cryptoctx, 212 pkinit_identity_crypto_context id_cryptoctx, 213 int type, krb5_data **out_data); 214 215 #ifndef WITHOUT_PKCS11 216 static krb5_error_code pkinit_find_private_key 217 (pkinit_identity_crypto_context, CK_ATTRIBUTE_TYPE usage, 218 CK_OBJECT_HANDLE *objp); 219 static krb5_error_code pkinit_login 220 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 221 CK_TOKEN_INFO *tip); 222 static krb5_error_code pkinit_open_session 223 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx); 224 static void * pkinit_C_LoadModule(const char *modname, CK_FUNCTION_LIST_PTR_PTR p11p); 225 static CK_RV pkinit_C_UnloadModule(void *handle); 226 #ifdef SILLYDECRYPT 227 CK_RV pkinit_C_Decrypt 228 (pkinit_identity_crypto_context id_cryptoctx, 229 CK_BYTE_PTR pEncryptedData, CK_ULONG ulEncryptedDataLen, 230 CK_BYTE_PTR pData, CK_ULONG_PTR pulDataLen); 231 #endif 232 233 static krb5_error_code pkinit_sign_data_pkcs11 234 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 235 unsigned char *data, unsigned int data_len, 236 unsigned char **sig, unsigned int *sig_len); 237 static krb5_error_code pkinit_decode_data_pkcs11 238 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 239 unsigned char *data, unsigned int data_len, 240 unsigned char **decoded_data, unsigned int *decoded_data_len); 241 #endif /* WITHOUT_PKCS11 */ 242 243 static krb5_error_code pkinit_sign_data_fs 244 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 245 unsigned char *data, unsigned int data_len, 246 unsigned char **sig, unsigned int *sig_len); 247 static krb5_error_code pkinit_decode_data_fs 248 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 249 unsigned char *data, unsigned int data_len, 250 unsigned char **decoded_data, unsigned int *decoded_data_len); 251 252 static krb5_error_code der_decode_data 253 (unsigned char *, long, unsigned char **, long *); 254 255 static krb5_error_code 256 create_krb5_invalidCertificates(krb5_context context, 257 pkinit_plg_crypto_context plg_cryptoctx, 258 pkinit_req_crypto_context req_cryptoctx, 259 pkinit_identity_crypto_context id_cryptoctx, 260 krb5_external_principal_identifier *** ids); 261 262 static krb5_error_code 263 create_identifiers_from_stack(STACK_OF(X509) *sk, 264 krb5_external_principal_identifier *** ids); 265 #ifdef LONGHORN_BETA_COMPAT 266 static int 267 wrap_signeddata(unsigned char *data, unsigned int data_len, 268 unsigned char **out, unsigned int *out_len, 269 int is_longhorn_server); 270 #else 271 static int 272 wrap_signeddata(unsigned char *data, unsigned int data_len, 273 unsigned char **out, unsigned int *out_len); 274 #endif 275 276 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 277 #define ku_reject(x, usage) \ 278 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 279 280 static char * 281 pkinit_pkcs11_code_to_text(int err); 282 283 #endif /* _PKINIT_CRYPTO_OPENSSL_H */ 284