X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fx_pubkey.c;h=b2d81dfcc1804cec63819926ef54cfd7e6d27533;hp=7e3bd0581c0aa4291b4979b176809180e64d82d3;hb=a46c9789ce2aecedceef119e9883513c7a49f1ca;hpb=a9be3af5ad4836f7e50f0546311ca90c717b861e

diff --git a/crypto/asn1/x_pubkey.c b/crypto/asn1/x_pubkey.c
index 7e3bd0581c..b2d81dfcc1 100644
--- a/crypto/asn1/x_pubkey.c
+++ b/crypto/asn1/x_pubkey.c
@@ -5,21 +5,21 @@
  * 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:
@@ -34,10 +34,10 @@
  *     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 
+ * 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
@@ -49,7 +49,7 @@
  * 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
@@ -57,197 +57,313 @@
  */
 
 #include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/asn1_mac.h>
-
-int i2d_X509_PUBKEY(X509_PUBKEY *a, unsigned char **pp)
-	{
-	M_ASN1_I2D_vars(a);
-
-	M_ASN1_I2D_len(a->algor,	i2d_X509_ALGOR);
-	M_ASN1_I2D_len(a->public_key,	i2d_ASN1_BIT_STRING);
-
-	M_ASN1_I2D_seq_total();
-
-	M_ASN1_I2D_put(a->algor,	i2d_X509_ALGOR);
-	M_ASN1_I2D_put(a->public_key,	i2d_ASN1_BIT_STRING);
-
-	M_ASN1_I2D_finish();
-	}
-
-X509_PUBKEY *d2i_X509_PUBKEY(X509_PUBKEY **a, unsigned char **pp,
-	     long length)
-	{
-	M_ASN1_D2I_vars(a,X509_PUBKEY *,X509_PUBKEY_new);
-
-	M_ASN1_D2I_Init();
-	M_ASN1_D2I_start_sequence();
-	M_ASN1_D2I_get(ret->algor,d2i_X509_ALGOR);
-	M_ASN1_D2I_get(ret->public_key,d2i_ASN1_BIT_STRING);
-	if (ret->pkey != NULL)
-		{
-		EVP_PKEY_free(ret->pkey);
-		ret->pkey=NULL;
-		}
-	M_ASN1_D2I_Finish(a,X509_PUBKEY_free,ASN1_F_D2I_X509_PUBKEY);
-	}
-
-X509_PUBKEY *X509_PUBKEY_new(void)
-	{
-	X509_PUBKEY *ret=NULL;
-	ASN1_CTX c;
-
-	M_ASN1_New_Malloc(ret,X509_PUBKEY);
-	M_ASN1_New(ret->algor,X509_ALGOR_new);
-	M_ASN1_New(ret->public_key,ASN1_BIT_STRING_new);
-	ret->pkey=NULL;
-	return(ret);
-	M_ASN1_New_Error(ASN1_F_X509_PUBKEY_NEW);
-	}
-
-void X509_PUBKEY_free(X509_PUBKEY *a)
-	{
-	if (a == NULL) return;
-	X509_ALGOR_free(a->algor);
-	ASN1_BIT_STRING_free(a->public_key);
-	if (a->pkey != NULL) EVP_PKEY_free(a->pkey);
-	Free((char *)a);
-	}
-
-int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
-	{
-	int ok=0;
-	X509_PUBKEY *pk;
-	X509_ALGOR *a;
-	ASN1_OBJECT *o;
-	unsigned char *s,*p;
-	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);
-			a->parameter=ASN1_TYPE_new();
-			a->parameter->type=V_ASN1_NULL;
-			}
-		}
-	else
-#ifndef 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);
-		i=i2d_DSAparams(dsa,NULL);
-		p=(unsigned char *)Malloc(i);
-		pp=p;
-		i2d_DSAparams(dsa,&pp);
-		a->parameter=ASN1_TYPE_new();
-		a->parameter->type=V_ASN1_SEQUENCE;
-		a->parameter->value.sequence=ASN1_STRING_new();
-		ASN1_STRING_set(a->parameter->value.sequence,p,i);
-		Free(p);
-		}
-	else
+#include "internal/cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include "internal/asn1_int.h"
+#ifndef OPENSSL_NO_RSA
+# include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_DSA
+# include <openssl/dsa.h>
 #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 *)Malloc(i+1)) == NULL) goto err;
-	p=s;
-	i2d_PublicKey(pkey,&p);
-	if (!ASN1_BIT_STRING_set(pk->public_key,s,i)) 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;
+/* 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;
+}
 
-	Free(s);
+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)
 
-	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
-	pk->pkey=pkey;
+IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
 
-	if (*x != NULL)
-		X509_PUBKEY_free(*x);
+int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
+{
+    X509_PUBKEY *pk = NULL;
 
-	*x=pk;
-	pk=NULL;
+    if (x == NULL)
+        return (0);
 
-	ok=1;
-err:
-	if (pk != NULL) X509_PUBKEY_free(pk);
-	return(ok);
-	}
+    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;
+    }
+
+    X509_PUBKEY_free(*x);
+    *x = pk;
+    return 1;
+
+ error:
+    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 NO_DSA
-	X509_ALGOR *a;
+{
+    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:
+    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;
+    const unsigned char *q;
+    q = *pp;
+    xpk = d2i_X509_PUBKEY(NULL, &q, length);
+    if (!xpk)
+        return NULL;
+    pktmp = X509_PUBKEY_get(xpk);
+    X509_PUBKEY_free(xpk);
+    if (!pktmp)
+        return NULL;
+    *pp = q;
+    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
 
-	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 NO_DSA
-	a=key->algor;
-	if (ret->type == EVP_PKEY_DSA)
-		{
-		if (a->parameter->type == V_ASN1_SEQUENCE)
-			{
-			ret->pkey.dsa->write_params=0;
-			p=a->parameter->value.sequence->data;
-			j=a->parameter->value.sequence->length;
-			if (!d2i_DSAparams(&ret->pkey.dsa,&p,(long)j))
-				goto err;
-			}
-		ret->save_parameters=1;
-		}
+#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
-	key->pkey=ret;
-	CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY);
-	return(ret);
-err:
-	if (ret != NULL)
-		EVP_PKEY_free(ret);
-	return(NULL);
-	}
 
+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) {
+        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;
+}