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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 33 */ 34 35 #ifndef _PKINIT_CRYPTO_OPENSSL_H 36 #define _PKINIT_CRYPTO_OPENSSL_H 37 38 #include <openssl/bn.h> 39 #include <openssl/dh.h> 40 #include <openssl/x509.h> 41 #include <openssl/pkcs7.h> 42 #include <openssl/pkcs12.h> 43 #include <openssl/obj_mac.h> 44 #include <openssl/x509v3.h> 45 #include <openssl/err.h> 46 #include <openssl/evp.h> 47 #include <openssl/asn1_mac.h> 48 #include <openssl/sha.h> 49 #include <openssl/asn1.h> 50 #include <openssl/pem.h> 51 52 #include "pkinit.h" 53 54 #define DN_BUF_LEN 256 55 #define MAX_CREDS_ALLOWED 20 56 57 struct _pkinit_cred_info { 58 X509 *cert; 59 EVP_PKEY *key; 60 #ifndef WITHOUT_PKCS11 61 CK_BYTE_PTR cert_id; 62 int cert_id_len; 63 #endif 64 }; 65 typedef struct _pkinit_cred_info * pkinit_cred_info; 66 67 struct _pkinit_identity_crypto_context { 68 pkinit_cred_info creds[MAX_CREDS_ALLOWED+1]; 69 STACK_OF(X509) *my_certs; /* available user certs */ 70 int cert_index; /* cert to use out of available certs*/ 71 EVP_PKEY *my_key; /* available user keys if in filesystem */ 72 STACK_OF(X509) *trustedCAs; /* available trusted ca certs */ 73 STACK_OF(X509) *intermediateCAs; /* available intermediate ca certs */ 74 STACK_OF(X509_CRL) *revoked; /* available crls */ 75 int pkcs11_method; 76 krb5_prompter_fct prompter; 77 void *prompter_data; 78 #ifndef WITHOUT_PKCS11 79 char *p11_module_name; 80 CK_SLOT_ID slotid; 81 char *token_label; 82 char *cert_label; 83 char *PIN; /* Solaris Kerberos: */ 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 #define C_PROMPTED_USER 0x2 /* The user was prompted for token. */ 107 #define C_SKIP_PKCS11_AUTH 0x4 /* User does not want to do PKCS11 auth */ 108 109 struct _pkinit_plg_crypto_context { 110 DH *dh_1024; 111 DH *dh_2048; 112 DH *dh_4096; 113 ASN1_OBJECT *id_pkinit_authData; 114 ASN1_OBJECT *id_pkinit_authData9; 115 ASN1_OBJECT *id_pkinit_DHKeyData; 116 ASN1_OBJECT *id_pkinit_rkeyData; 117 ASN1_OBJECT *id_pkinit_san; 118 ASN1_OBJECT *id_ms_san_upn; 119 ASN1_OBJECT *id_pkinit_KPClientAuth; 120 ASN1_OBJECT *id_pkinit_KPKdc; 121 ASN1_OBJECT *id_ms_kp_sc_logon; 122 ASN1_OBJECT *id_kp_serverAuth; 123 }; 124 125 struct _pkinit_req_crypto_context { 126 X509 *received_cert; 127 DH *dh; 128 }; 129 130 #define CERT_MAGIC 0x53534c43 131 struct _pkinit_cert_data { 132 unsigned int magic; 133 pkinit_plg_crypto_context plgctx; 134 pkinit_req_crypto_context reqctx; 135 pkinit_identity_crypto_context idctx; 136 pkinit_cred_info cred; 137 unsigned int index; /* Index of this cred in the creds[] array */ 138 }; 139 140 #define ITER_MAGIC 0x53534c49 141 struct _pkinit_cert_iter_data { 142 unsigned int magic; 143 pkinit_plg_crypto_context plgctx; 144 pkinit_req_crypto_context reqctx; 145 pkinit_identity_crypto_context idctx; 146 unsigned int index; 147 }; 148 149 /* Solaris Kerberos */ 150 static krb5_error_code openssl_init(void); 151 152 static krb5_error_code pkinit_init_pkinit_oids(pkinit_plg_crypto_context ); 153 static void pkinit_fini_pkinit_oids(pkinit_plg_crypto_context ); 154 155 static krb5_error_code pkinit_init_dh_params(pkinit_plg_crypto_context ); 156 static void pkinit_fini_dh_params(pkinit_plg_crypto_context ); 157 158 static krb5_error_code pkinit_init_certs(pkinit_identity_crypto_context ctx); 159 static void pkinit_fini_certs(pkinit_identity_crypto_context ctx); 160 161 static krb5_error_code pkinit_init_pkcs11(pkinit_identity_crypto_context ctx); 162 static void pkinit_fini_pkcs11(pkinit_identity_crypto_context ctx); 163 164 static krb5_error_code pkinit_encode_dh_params 165 (BIGNUM *, BIGNUM *, BIGNUM *, unsigned char **, unsigned int *); 166 static DH *pkinit_decode_dh_params 167 (DH **, unsigned char **, unsigned int ); 168 static int pkinit_check_dh_params 169 (BIGNUM * p1, BIGNUM * p2, BIGNUM * g1, BIGNUM * q1); 170 171 static krb5_error_code pkinit_sign_data 172 (krb5_context context, pkinit_identity_crypto_context cryptoctx, 173 unsigned char *data, unsigned int data_len, 174 unsigned char **sig, unsigned int *sig_len); 175 176 static krb5_error_code create_signature 177 (unsigned char **, unsigned int *, unsigned char *, unsigned int, 178 EVP_PKEY *pkey); 179 180 static krb5_error_code pkinit_decode_data 181 (krb5_context context, pkinit_identity_crypto_context cryptoctx, 182 unsigned char *data, unsigned int data_len, 183 unsigned char **decoded, unsigned int *decoded_len); 184 185 static krb5_error_code decode_data 186 (unsigned char **, unsigned int *, unsigned char *, unsigned int, 187 EVP_PKEY *pkey, X509 *cert); 188 189 #ifdef DEBUG_DH 190 static void print_dh(DH *, char *); 191 static void print_pubkey(BIGNUM *, char *); 192 #endif 193 194 static int prepare_enc_data 195 (unsigned char *indata, int indata_len, unsigned char **outdata, 196 int *outdata_len); 197 198 static int openssl_callback (int, X509_STORE_CTX *); 199 static int openssl_callback_ignore_crls (int, X509_STORE_CTX *); 200 201 static int pkcs7_decrypt 202 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 203 PKCS7 *p7, BIO *bio); 204 205 static BIO * pkcs7_dataDecode 206 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 207 PKCS7 *p7); 208 209 static ASN1_OBJECT * pkinit_pkcs7type2oid 210 (pkinit_plg_crypto_context plg_cryptoctx, int pkcs7_type); 211 212 static krb5_error_code pkinit_create_sequence_of_principal_identifiers 213 (krb5_context context, pkinit_plg_crypto_context plg_cryptoctx, 214 pkinit_req_crypto_context req_cryptoctx, 215 pkinit_identity_crypto_context id_cryptoctx, 216 int type, krb5_data **out_data); 217 218 #ifndef WITHOUT_PKCS11 219 static krb5_error_code pkinit_find_private_key 220 (pkinit_identity_crypto_context, CK_ATTRIBUTE_TYPE usage, 221 CK_OBJECT_HANDLE *objp); 222 static krb5_error_code pkinit_login 223 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 224 CK_TOKEN_INFO *tip); 225 static void * pkinit_C_LoadModule(const char *modname, CK_FUNCTION_LIST_PTR_PTR p11p); 226 static CK_RV pkinit_C_UnloadModule(void *handle); 227 #ifdef SILLYDECRYPT 228 CK_RV pkinit_C_Decrypt 229 (pkinit_identity_crypto_context id_cryptoctx, 230 CK_BYTE_PTR pEncryptedData, CK_ULONG ulEncryptedDataLen, 231 CK_BYTE_PTR pData, CK_ULONG_PTR pulDataLen); 232 #endif 233 234 static krb5_error_code pkinit_sign_data_pkcs11 235 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 236 unsigned char *data, unsigned int data_len, 237 unsigned char **sig, unsigned int *sig_len); 238 static krb5_error_code pkinit_decode_data_pkcs11 239 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 240 unsigned char *data, unsigned int data_len, 241 unsigned char **decoded_data, unsigned int *decoded_data_len); 242 #endif /* WITHOUT_PKCS11 */ 243 244 static krb5_error_code pkinit_sign_data_fs 245 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 246 unsigned char *data, unsigned int data_len, 247 unsigned char **sig, unsigned int *sig_len); 248 static krb5_error_code pkinit_decode_data_fs 249 (krb5_context context, pkinit_identity_crypto_context id_cryptoctx, 250 unsigned char *data, unsigned int data_len, 251 unsigned char **decoded_data, unsigned int *decoded_data_len); 252 253 static krb5_error_code der_decode_data 254 (unsigned char *, long, unsigned char **, long *); 255 256 static krb5_error_code 257 create_krb5_invalidCertificates(krb5_context context, 258 pkinit_plg_crypto_context plg_cryptoctx, 259 pkinit_req_crypto_context req_cryptoctx, 260 pkinit_identity_crypto_context id_cryptoctx, 261 krb5_external_principal_identifier *** ids); 262 263 static krb5_error_code 264 create_identifiers_from_stack(STACK_OF(X509) *sk, 265 krb5_external_principal_identifier *** ids); 266 #ifdef LONGHORN_BETA_COMPAT 267 static int 268 wrap_signeddata(unsigned char *data, unsigned int data_len, 269 unsigned char **out, unsigned int *out_len, 270 int is_longhorn_server); 271 #else 272 static int 273 wrap_signeddata(unsigned char *data, unsigned int data_len, 274 unsigned char **out, unsigned int *out_len); 275 #endif 276 277 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 278 #define ku_reject(x, usage) \ 279 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 280 281 static char * 282 pkinit_pkcs11_code_to_text(int err); 283 284 #endif /* _PKINIT_CRYPTO_OPENSSL_H */ 285