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-rw-r--r--crypto/asn1/x_pubkey.c531
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diff --git a/crypto/asn1/x_pubkey.c b/crypto/asn1/x_pubkey.c
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+++ b/crypto/asn1/x_pubkey.c
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+/* 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 <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_DSA
+#include <openssl/dsa.h>
+#endif
+
+/* 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;
+ }
+ }
+#ifndef OPENSSL_NO_DSA
+ else 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);
+ }
+#endif
+#ifndef OPENSSL_NO_EC
+ else if (pkey->type == EVP_PKEY_EC)
+ {
+ int nid=0;
+ unsigned char *pp;
+ EC_KEY *ec_key;
+ const EC_GROUP *group;
+
+ ec_key = pkey->pkey.ec;
+ ASN1_TYPE_free(a->parameter);
+
+ if ((a->parameter = ASN1_TYPE_new()) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
+ goto err;
+ }
+
+ group = EC_KEY_get0_group(ec_key);
+ if (EC_GROUP_get_asn1_flag(group)
+ && (nid = EC_GROUP_get_curve_name(group)))
+ {
+ /* just set the OID */
+ a->parameter->type = V_ASN1_OBJECT;
+ a->parameter->value.object = OBJ_nid2obj(nid);
+ }
+ else /* explicit parameters */
+ {
+ if ((i = i2d_ECParameters(ec_key, NULL)) == 0)
+ {
+ X509err(X509_F_X509_PUBKEY_SET, ERR_R_EC_LIB);
+ goto err;
+ }
+ if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ pp = p;
+ if (!i2d_ECParameters(ec_key, &pp))
+ {
+ X509err(X509_F_X509_PUBKEY_SET, ERR_R_EC_LIB);
+ OPENSSL_free(p);
+ goto err;
+ }
+ a->parameter->type = V_ASN1_SEQUENCE;
+ if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
+ OPENSSL_free(p);
+ goto err;
+ }
+ ASN1_STRING_set(a->parameter->value.sequence, p, i);
+ OPENSSL_free(p);
+ }
+ }
+#endif
+ else if (1)
+ {
+ 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;
+ const unsigned char *p;
+#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
+ 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);
+ if ((ret = EVP_PKEY_new()) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ ret->type = EVP_PKEY_type(type);
+
+ /* the parameters must be extracted before the public key (ECDSA!) */
+
+#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
+ a=key->algor;
+#endif
+
+ if (0)
+ ;
+#ifndef OPENSSL_NO_DSA
+ else if (ret->type == EVP_PKEY_DSA)
+ {
+ if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
+ {
+ if ((ret->pkey.dsa = DSA_new()) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ 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
+#ifndef OPENSSL_NO_EC
+ else if (ret->type == EVP_PKEY_EC)
+ {
+ if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
+ {
+ /* type == V_ASN1_SEQUENCE => we have explicit parameters
+ * (e.g. parameters in the X9_62_EC_PARAMETERS-structure )
+ */
+ if ((ret->pkey.ec= EC_KEY_new()) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_GET,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ cp = p = a->parameter->value.sequence->data;
+ j = a->parameter->value.sequence->length;
+ if (!d2i_ECParameters(&ret->pkey.ec, &cp, (long)j))
+ {
+ X509err(X509_F_X509_PUBKEY_GET, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
+ else if (a->parameter && (a->parameter->type == V_ASN1_OBJECT))
+ {
+ /* type == V_ASN1_OBJECT => the parameters are given
+ * by an asn1 OID
+ */
+ EC_KEY *ec_key;
+ EC_GROUP *group;
+
+ if (ret->pkey.ec == NULL)
+ ret->pkey.ec = EC_KEY_new();
+ ec_key = ret->pkey.ec;
+ if (ec_key == NULL)
+ goto err;
+ group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(a->parameter->value.object));
+ if (group == NULL)
+ goto err;
+ EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
+ if (EC_KEY_set_group(ec_key, group) == 0)
+ goto err;
+ EC_GROUP_free(group);
+ }
+ /* the case implicitlyCA is currently not implemented */
+ ret->save_parameters = 1;
+ }
+#endif
+
+ p=key->public_key->data;
+ j=key->public_key->length;
+ if (!d2i_PublicKey(type, &ret, &p, (long)j))
+ {
+ X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB);
+ goto err;
+ }
+
+ 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, const 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, const unsigned char **pp,
+ long length)
+ {
+ EVP_PKEY *pkey;
+ RSA *key;
+ const 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, const unsigned char **pp,
+ long length)
+ {
+ EVP_PKEY *pkey;
+ DSA *key;
+ const 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
+
+#ifndef OPENSSL_NO_EC
+EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
+ {
+ EVP_PKEY *pkey;
+ EC_KEY *key;
+ const unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey) return(NULL);
+ key = EVP_PKEY_get1_EC_KEY(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key) return(NULL);
+ *pp = q;
+ if (a)
+ {
+ EC_KEY_free(*a);
+ *a = key;
+ }
+ return(key);
+ }
+
+int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp)
+ {
+ EVP_PKEY *pktmp;
+ int ret;
+ if (!a) return(0);
+ if ((pktmp = EVP_PKEY_new()) == NULL)
+ {
+ ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
+ return(0);
+ }
+ EVP_PKEY_set1_EC_KEY(pktmp, a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return(ret);
+ }
+#endif
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