1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <sys/errno.h> 30*0Sstevel@tonic-gate #include <sys/types.h> 31*0Sstevel@tonic-gate #include <sys/systm.h> 32*0Sstevel@tonic-gate #include <sys/kmem.h> 33*0Sstevel@tonic-gate #include <sys/crypto/common.h> 34*0Sstevel@tonic-gate #include <sys/crypto/impl.h> 35*0Sstevel@tonic-gate #include <sys/crypto/api.h> 36*0Sstevel@tonic-gate #include <sys/crypto/spi.h> 37*0Sstevel@tonic-gate #include <sys/crypto/sched_impl.h> 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate /* 40*0Sstevel@tonic-gate * Crypto contexts manipulation routines 41*0Sstevel@tonic-gate */ 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate /* 44*0Sstevel@tonic-gate * crypto_create_ctx_template() 45*0Sstevel@tonic-gate * 46*0Sstevel@tonic-gate * Arguments: 47*0Sstevel@tonic-gate * 48*0Sstevel@tonic-gate * mech: crypto_mechanism_t pointer. 49*0Sstevel@tonic-gate * mech_type is a valid value previously returned by 50*0Sstevel@tonic-gate * crypto_mech2id(); 51*0Sstevel@tonic-gate * When the mech's parameter is not NULL, its definition depends 52*0Sstevel@tonic-gate * on the standard definition of the mechanism. 53*0Sstevel@tonic-gate * key: pointer to a crypto_key_t structure. 54*0Sstevel@tonic-gate * ptmpl: a storage for the opaque crypto_ctx_template_t, allocated and 55*0Sstevel@tonic-gate * initialized by the software provider this routine is 56*0Sstevel@tonic-gate * dispatched to. 57*0Sstevel@tonic-gate * kmflag: KM_SLEEP/KM_NOSLEEP mem. alloc. flag. 58*0Sstevel@tonic-gate * 59*0Sstevel@tonic-gate * Description: 60*0Sstevel@tonic-gate * Redirects the call to the software provider of the specified 61*0Sstevel@tonic-gate * mechanism. That provider will allocate and pre-compute/pre-expand 62*0Sstevel@tonic-gate * the context template, reusable by later calls to crypto_xxx_init(). 63*0Sstevel@tonic-gate * The size and address of that provider context template are stored 64*0Sstevel@tonic-gate * in an internal structure, kcf_ctx_template_t. The address of that 65*0Sstevel@tonic-gate * structure is given back to the caller in *ptmpl. 66*0Sstevel@tonic-gate * 67*0Sstevel@tonic-gate * Context: 68*0Sstevel@tonic-gate * Process or interrupt. 69*0Sstevel@tonic-gate * 70*0Sstevel@tonic-gate * Returns: 71*0Sstevel@tonic-gate * CRYPTO_SUCCESS when the context template is successfully created. 72*0Sstevel@tonic-gate * CRYPTO_HOST_MEMEORY: mem alloc failure 73*0Sstevel@tonic-gate * CRYPTO_ARGUMENTS_BAD: NULL storage for the ctx template. 74*0Sstevel@tonic-gate * RYPTO_MECHANISM_INVALID: invalid mechanism 'mech'. 75*0Sstevel@tonic-gate */ 76*0Sstevel@tonic-gate int 77*0Sstevel@tonic-gate crypto_create_ctx_template(crypto_mechanism_t *mech, crypto_key_t *key, 78*0Sstevel@tonic-gate crypto_ctx_template_t *ptmpl, int kmflag) 79*0Sstevel@tonic-gate { 80*0Sstevel@tonic-gate int error; 81*0Sstevel@tonic-gate kcf_mech_entry_t *me; 82*0Sstevel@tonic-gate kcf_prov_mech_desc_t *pm; 83*0Sstevel@tonic-gate kcf_provider_desc_t *pd; 84*0Sstevel@tonic-gate kcf_ctx_template_t *ctx_tmpl; 85*0Sstevel@tonic-gate crypto_mechanism_t prov_mech; 86*0Sstevel@tonic-gate kcf_ops_class_t class; 87*0Sstevel@tonic-gate int index; 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate /* A few args validation */ 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate if (ptmpl == NULL) 92*0Sstevel@tonic-gate return (CRYPTO_ARGUMENTS_BAD); 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate if (mech == NULL) 95*0Sstevel@tonic-gate return (CRYPTO_MECHANISM_INVALID); 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate if (kcf_get_mech_entry(mech->cm_type, &me) != KCF_SUCCESS) { 98*0Sstevel@tonic-gate /* error is one of the KCF_INVALID_MECH_XXX's */ 99*0Sstevel@tonic-gate return (CRYPTO_MECHANISM_INVALID); 100*0Sstevel@tonic-gate } 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate /* 103*0Sstevel@tonic-gate * Get the software provider for the mech. 104*0Sstevel@tonic-gate * Lock the mech_entry until we grab the 'pd' 105*0Sstevel@tonic-gate */ 106*0Sstevel@tonic-gate mutex_enter(&me->me_mutex); 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate if (((pm = me->me_sw_prov) == NULL) || 109*0Sstevel@tonic-gate ((pd = pm->pm_prov_desc) == NULL)) { 110*0Sstevel@tonic-gate mutex_exit(&me->me_mutex); 111*0Sstevel@tonic-gate return (CRYPTO_MECH_NOT_SUPPORTED); 112*0Sstevel@tonic-gate } 113*0Sstevel@tonic-gate KCF_PROV_REFHOLD(pd); 114*0Sstevel@tonic-gate mutex_exit(&me->me_mutex); 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate if ((ctx_tmpl = (kcf_ctx_template_t *)kmem_alloc( 117*0Sstevel@tonic-gate sizeof (kcf_ctx_template_t), kmflag)) == NULL) { 118*0Sstevel@tonic-gate KCF_PROV_REFRELE(pd); 119*0Sstevel@tonic-gate return (CRYPTO_HOST_MEMORY); 120*0Sstevel@tonic-gate } 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate /* Pass a mechtype that the provider understands */ 123*0Sstevel@tonic-gate class = KCF_MECH2CLASS(mech->cm_type); 124*0Sstevel@tonic-gate index = KCF_MECH2INDEX(mech->cm_type); 125*0Sstevel@tonic-gate prov_mech.cm_type = pd->pd_map_mechnums[class][index]; 126*0Sstevel@tonic-gate prov_mech.cm_param = mech->cm_param; 127*0Sstevel@tonic-gate prov_mech.cm_param_len = mech->cm_param_len; 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate error = KCF_PROV_CREATE_CTX_TEMPLATE(pd, &prov_mech, key, 130*0Sstevel@tonic-gate &(ctx_tmpl->ct_prov_tmpl), &(ctx_tmpl->ct_size), KCF_RHNDL(kmflag)); 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate if (error == CRYPTO_SUCCESS) { 133*0Sstevel@tonic-gate ctx_tmpl->ct_generation = me->me_gen_swprov; 134*0Sstevel@tonic-gate *ptmpl = ctx_tmpl; 135*0Sstevel@tonic-gate } else { 136*0Sstevel@tonic-gate kmem_free(ctx_tmpl, sizeof (kcf_ctx_template_t)); 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate KCF_PROV_REFRELE(pd); 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate return (error); 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate /* 144*0Sstevel@tonic-gate * crypto_destroy_ctx_template() 145*0Sstevel@tonic-gate * 146*0Sstevel@tonic-gate * Arguments: 147*0Sstevel@tonic-gate * 148*0Sstevel@tonic-gate * tmpl: an opaque crypto_ctx_template_t previously created by 149*0Sstevel@tonic-gate * crypto_create_ctx_template() 150*0Sstevel@tonic-gate * 151*0Sstevel@tonic-gate * Description: 152*0Sstevel@tonic-gate * Frees the inbedded crypto_spi_ctx_template_t, then the 153*0Sstevel@tonic-gate * kcf_ctx_template_t. 154*0Sstevel@tonic-gate * 155*0Sstevel@tonic-gate * Context: 156*0Sstevel@tonic-gate * Process or interrupt. 157*0Sstevel@tonic-gate * 158*0Sstevel@tonic-gate */ 159*0Sstevel@tonic-gate void 160*0Sstevel@tonic-gate crypto_destroy_ctx_template(crypto_ctx_template_t tmpl) 161*0Sstevel@tonic-gate { 162*0Sstevel@tonic-gate kcf_ctx_template_t *ctx_tmpl = (kcf_ctx_template_t *)tmpl; 163*0Sstevel@tonic-gate 164*0Sstevel@tonic-gate if (ctx_tmpl == NULL) 165*0Sstevel@tonic-gate return; 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate ASSERT(ctx_tmpl->ct_prov_tmpl != NULL); 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate bzero(ctx_tmpl->ct_prov_tmpl, ctx_tmpl->ct_size); 170*0Sstevel@tonic-gate kmem_free(ctx_tmpl->ct_prov_tmpl, ctx_tmpl->ct_size); 171*0Sstevel@tonic-gate kmem_free(ctx_tmpl, sizeof (kcf_ctx_template_t)); 172*0Sstevel@tonic-gate } 173