/* crypto/asn1/x_pubkey.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include #include "cryptlib.h" #include #include /* Minor tweak to operation: free up EVP_PKEY */ static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) { if(operation == ASN1_OP_FREE_POST) { X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; EVP_PKEY_free(pubkey->pkey); } return 1; } ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = { ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR), ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING) } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY) IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY) int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) { X509_PUBKEY *pk=NULL; X509_ALGOR *a; ASN1_OBJECT *o; unsigned char *s,*p = NULL; int i; if (x == NULL) return(0); if ((pk=X509_PUBKEY_new()) == NULL) goto err; a=pk->algor; /* set the algorithm id */ if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err; ASN1_OBJECT_free(a->algorithm); a->algorithm=o; /* Set the parameter list */ if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA)) { if ((a->parameter == NULL) || (a->parameter->type != V_ASN1_NULL)) { ASN1_TYPE_free(a->parameter); if (!(a->parameter=ASN1_TYPE_new())) { X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } a->parameter->type=V_ASN1_NULL; } } else #ifndef OPENSSL_NO_DSA if (pkey->type == EVP_PKEY_DSA) { unsigned char *pp; DSA *dsa; dsa=pkey->pkey.dsa; dsa->write_params=0; ASN1_TYPE_free(a->parameter); if ((i=i2d_DSAparams(dsa,NULL)) <= 0) goto err; if (!(p=(unsigned char *)OPENSSL_malloc(i))) { X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } pp=p; i2d_DSAparams(dsa,&pp); if (!(a->parameter=ASN1_TYPE_new())) { OPENSSL_free(p); X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } a->parameter->type=V_ASN1_SEQUENCE; if (!(a->parameter->value.sequence=ASN1_STRING_new())) { OPENSSL_free(p); X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } if (!ASN1_STRING_set(a->parameter->value.sequence,p,i)) { OPENSSL_free(p); X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } OPENSSL_free(p); } else #endif { X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM); goto err; } if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err; if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL) { X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } p=s; i2d_PublicKey(pkey,&p); if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) { X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); goto err; } /* Set number of unused bits to zero */ pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT; OPENSSL_free(s); #if 0 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY); pk->pkey=pkey; #endif if (*x != NULL) X509_PUBKEY_free(*x); *x=pk; return 1; err: if (pk != NULL) X509_PUBKEY_free(pk); return 0; } EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) { EVP_PKEY *ret=NULL; long j; int type; unsigned char *p; #ifndef OPENSSL_NO_DSA const unsigned char *cp; X509_ALGOR *a; #endif if (key == NULL) goto err; if (key->pkey != NULL) { CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY); return(key->pkey); } if (key->public_key == NULL) goto err; type=OBJ_obj2nid(key->algor->algorithm); p=key->public_key->data; j=key->public_key->length; if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL) { X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB); goto err; } ret->save_parameters=0; #ifndef OPENSSL_NO_DSA a=key->algor; if (ret->type == EVP_PKEY_DSA) { if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE)) { ret->pkey.dsa->write_params=0; cp=p=a->parameter->value.sequence->data; j=a->parameter->value.sequence->length; if (!d2i_DSAparams(&ret->pkey.dsa,&cp,(long)j)) goto err; } ret->save_parameters=1; } #endif key->pkey=ret; CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY); return(ret); err: if (ret != NULL) EVP_PKEY_free(ret); return(NULL); } /* Now two pseudo ASN1 routines that take an EVP_PKEY structure * and encode or decode as X509_PUBKEY */ EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp, long length) { X509_PUBKEY *xpk; EVP_PKEY *pktmp; xpk = d2i_X509_PUBKEY(NULL, pp, length); if(!xpk) return NULL; pktmp = X509_PUBKEY_get(xpk); X509_PUBKEY_free(xpk); if(!pktmp) return NULL; if(a) { EVP_PKEY_free(*a); *a = pktmp; } return pktmp; } int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp) { X509_PUBKEY *xpk=NULL; int ret; if(!a) return 0; if(!X509_PUBKEY_set(&xpk, a)) return 0; ret = i2d_X509_PUBKEY(xpk, pp); X509_PUBKEY_free(xpk); return ret; } /* The following are equivalents but which return RSA and DSA * keys */ #ifndef OPENSSL_NO_RSA RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp, long length) { EVP_PKEY *pkey; RSA *key; unsigned char *q; q = *pp; pkey = d2i_PUBKEY(NULL, &q, length); if(!pkey) return NULL; key = EVP_PKEY_get1_RSA(pkey); EVP_PKEY_free(pkey); if(!key) return NULL; *pp = q; if(a) { RSA_free(*a); *a = key; } return key; } int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp) { EVP_PKEY *pktmp; int ret; if(!a) return 0; pktmp = EVP_PKEY_new(); if(!pktmp) { ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE); return 0; } EVP_PKEY_set1_RSA(pktmp, a); ret = i2d_PUBKEY(pktmp, pp); EVP_PKEY_free(pktmp); return ret; } #endif #ifndef OPENSSL_NO_DSA DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp, long length) { EVP_PKEY *pkey; DSA *key; unsigned char *q; q = *pp; pkey = d2i_PUBKEY(NULL, &q, length); if(!pkey) return NULL; key = EVP_PKEY_get1_DSA(pkey); EVP_PKEY_free(pkey); if(!key) return NULL; *pp = q; if(a) { DSA_free(*a); *a = key; } return key; } int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp) { EVP_PKEY *pktmp; int ret; if(!a) return 0; pktmp = EVP_PKEY_new(); if(!pktmp) { ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE); return 0; } EVP_PKEY_set1_DSA(pktmp, a); ret = i2d_PUBKEY(pktmp, pp); EVP_PKEY_free(pktmp); return ret; } #endif