--- /dev/null
+/* 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>
+#include "asn1_locl.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,
+ void *exarg)
+ {
+ 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;
+
+ if (x == NULL) return(0);
+
+ if ((pk=X509_PUBKEY_new()) == NULL) goto error;
+
+ if (pkey->ameth)
+ {
+ if (pkey->ameth->pub_encode)
+ {
+ if (!pkey->ameth->pub_encode(pk, pkey))
+ {
+ X509err(X509_F_X509_PUBKEY_SET,
+ X509_R_PUBLIC_KEY_ENCODE_ERROR);
+ goto error;
+ }
+ }
+ else
+ {
+ X509err(X509_F_X509_PUBKEY_SET,
+ X509_R_METHOD_NOT_SUPPORTED);
+ goto error;
+ }
+ }
+ else
+ {
+ X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
+ goto error;
+ }
+
+ if (*x != NULL)
+ X509_PUBKEY_free(*x);
+
+ *x=pk;
+
+ return 1;
+error:
+ if (pk != NULL) X509_PUBKEY_free(pk);
+ return 0;
+ }
+
+EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
+ {
+ EVP_PKEY *ret=NULL;
+
+ if (key == NULL) goto error;
+
+ if (key->pkey != NULL)
+ {
+ CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
+ return key->pkey;
+ }
+
+ if (key->public_key == NULL) goto error;
+
+ if ((ret = EVP_PKEY_new()) == NULL)
+ {
+ X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
+ goto error;
+ }
+
+ if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm)))
+ {
+ X509err(X509_F_X509_PUBKEY_GET,X509_R_UNSUPPORTED_ALGORITHM);
+ goto error;
+ }
+
+ if (ret->ameth->pub_decode)
+ {
+ if (!ret->ameth->pub_decode(ret, key))
+ {
+ X509err(X509_F_X509_PUBKEY_GET,
+ X509_R_PUBLIC_KEY_DECODE_ERROR);
+ goto error;
+ }
+ }
+ else
+ {
+ X509err(X509_F_X509_PUBKEY_GET, X509_R_METHOD_NOT_SUPPORTED);
+ goto error;
+ }
+
+ /* Check to see if another thread set key->pkey first */
+ CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
+ if (key->pkey)
+ {
+ CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
+ EVP_PKEY_free(ret);
+ ret = key->pkey;
+ }
+ else
+ {
+ key->pkey = ret;
+ CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
+ }
+ CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
+
+ return ret;
+
+ error:
+ 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
+
+int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj,
+ int ptype, void *pval,
+ unsigned char *penc, int penclen)
+ {
+ if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
+ return 0;
+ if (penc)
+ {
+ if (pub->public_key->data)
+ OPENSSL_free(pub->public_key->data);
+ pub->public_key->data = penc;
+ pub->public_key->length = penclen;
+ /* Set number of unused bits to zero */
+ pub->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
+ pub->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
+ }
+ return 1;
+ }
+
+int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+ const unsigned char **pk, int *ppklen,
+ X509_ALGOR **pa,
+ X509_PUBKEY *pub)
+ {
+ if (ppkalg)
+ *ppkalg = pub->algor->algorithm;
+ if (pk)
+ {
+ *pk = pub->public_key->data;
+ *ppklen = pub->public_key->length;
+ }
+ if (pa)
+ *pa = pub->algor;
+ return 1;
+ }
projects / cassiopeia.git / blobdiff