1*0Sstevel@tonic-gate /* crypto/evp/evp_lib.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <stdio.h> 60*0Sstevel@tonic-gate #include "cryptlib.h" 61*0Sstevel@tonic-gate #include <openssl/evp.h> 62*0Sstevel@tonic-gate #include <openssl/objects.h> 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) 65*0Sstevel@tonic-gate { 66*0Sstevel@tonic-gate int ret; 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate if (c->cipher->set_asn1_parameters != NULL) 69*0Sstevel@tonic-gate ret=c->cipher->set_asn1_parameters(c,type); 70*0Sstevel@tonic-gate else 71*0Sstevel@tonic-gate ret=1; 72*0Sstevel@tonic-gate return(ret); 73*0Sstevel@tonic-gate } 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) 76*0Sstevel@tonic-gate { 77*0Sstevel@tonic-gate int ret; 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate if (c->cipher->get_asn1_parameters != NULL) 80*0Sstevel@tonic-gate ret=c->cipher->get_asn1_parameters(c,type); 81*0Sstevel@tonic-gate else 82*0Sstevel@tonic-gate ret=1; 83*0Sstevel@tonic-gate return(ret); 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) 87*0Sstevel@tonic-gate { 88*0Sstevel@tonic-gate int i=0,l; 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate if (type != NULL) 91*0Sstevel@tonic-gate { 92*0Sstevel@tonic-gate l=EVP_CIPHER_CTX_iv_length(c); 93*0Sstevel@tonic-gate OPENSSL_assert(l <= sizeof c->iv); 94*0Sstevel@tonic-gate i=ASN1_TYPE_get_octetstring(type,c->oiv,l); 95*0Sstevel@tonic-gate if (i != l) 96*0Sstevel@tonic-gate return(-1); 97*0Sstevel@tonic-gate else if (i > 0) 98*0Sstevel@tonic-gate memcpy(c->iv,c->oiv,l); 99*0Sstevel@tonic-gate } 100*0Sstevel@tonic-gate return(i); 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) 104*0Sstevel@tonic-gate { 105*0Sstevel@tonic-gate int i=0,j; 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate if (type != NULL) 108*0Sstevel@tonic-gate { 109*0Sstevel@tonic-gate j=EVP_CIPHER_CTX_iv_length(c); 110*0Sstevel@tonic-gate OPENSSL_assert(j <= sizeof c->iv); 111*0Sstevel@tonic-gate i=ASN1_TYPE_set_octetstring(type,c->oiv,j); 112*0Sstevel@tonic-gate } 113*0Sstevel@tonic-gate return(i); 114*0Sstevel@tonic-gate } 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate /* Convert the various cipher NIDs and dummies to a proper OID NID */ 117*0Sstevel@tonic-gate int EVP_CIPHER_type(const EVP_CIPHER *ctx) 118*0Sstevel@tonic-gate { 119*0Sstevel@tonic-gate int nid; 120*0Sstevel@tonic-gate ASN1_OBJECT *otmp; 121*0Sstevel@tonic-gate nid = EVP_CIPHER_nid(ctx); 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate switch(nid) { 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate case NID_rc2_cbc: 126*0Sstevel@tonic-gate case NID_rc2_64_cbc: 127*0Sstevel@tonic-gate case NID_rc2_40_cbc: 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate return NID_rc2_cbc; 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate case NID_rc4: 132*0Sstevel@tonic-gate case NID_rc4_40: 133*0Sstevel@tonic-gate 134*0Sstevel@tonic-gate return NID_rc4; 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate default: 137*0Sstevel@tonic-gate /* Check it has an OID and it is valid */ 138*0Sstevel@tonic-gate otmp = OBJ_nid2obj(nid); 139*0Sstevel@tonic-gate if(!otmp || !otmp->data) nid = NID_undef; 140*0Sstevel@tonic-gate ASN1_OBJECT_free(otmp); 141*0Sstevel@tonic-gate return nid; 142*0Sstevel@tonic-gate } 143*0Sstevel@tonic-gate } 144*0Sstevel@tonic-gate 145