ECDSA support

Submitted by: Nils Larsch <nla@trustcenter.de>

1 files changed, 174 insertions, 49 deletions

diff --git a/crypto/asn1/x_pubkey.c b/crypto/asn1/x_pubkey.c
index 5563029..227b0ce 100644
--- a/crypto/asn1/x_pubkey.c
+++ b/crypto/asn1/x_pubkey.c
@@ -63,13 +63,14 @@
 
 /* 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) {
+	{
+	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),
@@ -108,13 +109,12 @@ int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
 			a->parameter->type=V_ASN1_NULL;
 			}
 		}
-	else
 #ifndef OPENSSL_NO_DSA
-		if (pkey->type == EVP_PKEY_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);
@@ -128,8 +128,51 @@ int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
 		ASN1_STRING_set(a->parameter->value.sequence,p,i);
 		OPENSSL_free(p);
 		}
-	else
 #endif
+#ifndef OPENSSL_NO_ECDSA
+	else if (pkey->type == EVP_PKEY_ECDSA)
+		{
+		unsigned char *pp;
+		ECDSA *ecdsa;
+		
+		ecdsa = pkey->pkey.ecdsa;
+		ecdsa->write_params=0;
+		ASN1_TYPE_free(a->parameter);
+		if ((i = i2d_ECDSAParameters(ecdsa, NULL)) == 0)
+			{
+			X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_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_ECDSAParameters(ecdsa, &pp))
+			{
+			X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
+			OPENSSL_free(p);
+			goto err;
+			}
+		if ((a->parameter = ASN1_TYPE_new()) == NULL)
+			{
+			X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_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;
@@ -177,40 +220,79 @@ EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
 	if (key == NULL) goto err;
 
 	if (key->pkey != NULL)
-	    {
-	    CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
-	    return(key->pkey);
-	    }
+		{
+		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)
+	if ((ret = EVP_PKEY_new()) == NULL)
 		{
-		X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB);
+		X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
 		goto err;
 		}
-	ret->save_parameters=0;
+	ret->type = EVP_PKEY_type(type);
 
-#ifndef OPENSSL_NO_DSA
+	/* the parameters must be extracted before the public key (ECDSA!) */
+	
 	a=key->algor;
-	if (ret->type == EVP_PKEY_DSA)
+
+	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))
+			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);
+#ifndef OPENSSL_NO_ECDSA
+	else if (ret->type == EVP_PKEY_ECDSA)
+		{
+		if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
+			{
+			if ((ret->pkey.ecdsa= ECDSA_new()) == NULL)
+				{
+				X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
+				goto err;
+				}
+			ret->pkey.ecdsa->write_params = 0;
+			cp = p = a->parameter->value.sequence->data;
+			j = a->parameter->value.sequence->length;
+			if (!d2i_ECDSAParameters(&ret->pkey.ecdsa, &cp, (long)j))
+				{
+				X509err(X509_F_X509_PUBKEY_GET, ERR_R_ECDSA_LIB);
+				goto err;
+				}
+			}
+		ret->save_parameters = 1;
+		}
+#endif
+
+	p=key->public_key->data;
+        j=key->public_key->length;
+        if ((ret = d2i_PublicKey(type, &ret, &p, (long)j)) == NULL)
+		{
+		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)
@@ -224,7 +306,7 @@ err:
 
 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);
@@ -232,15 +314,16 @@ EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
 	pktmp = X509_PUBKEY_get(xpk);
 	X509_PUBKEY_free(xpk);
 	if(!pktmp) return NULL;
-	if(a) {
+	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;
@@ -248,7 +331,7 @@ int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
 	ret = i2d_X509_PUBKEY(xpk, pp);
 	X509_PUBKEY_free(xpk);
 	return ret;
-}
+	}
 
 /* The following are equivalents but which return RSA and DSA
  * keys
@@ -256,75 +339,117 @@ int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
 #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;
+	if (!pkey) return NULL;
 	key = EVP_PKEY_get1_RSA(pkey);
 	EVP_PKEY_free(pkey);
-	if(!key) return NULL;
+	if (!key) return NULL;
 	*pp = q;
-	if(a) {
+	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;
+	if (!a) return 0;
 	pktmp = EVP_PKEY_new();
-	if(!pktmp) {
+	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;
+	if (!pkey) return NULL;
 	key = EVP_PKEY_get1_DSA(pkey);
 	EVP_PKEY_free(pkey);
-	if(!key) return NULL;
+	if (!key) return NULL;
 	*pp = q;
-	if(a) {
+	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) {
+	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_ECDSA
+ECDSA *d2i_ECDSA_PUBKEY(ECDSA **a, unsigned char **pp, long length)
+	{
+	EVP_PKEY *pkey;
+	ECDSA *key;
+	unsigned char *q;
+	q = *pp;
+	pkey = d2i_PUBKEY(NULL, &q, length);
+	if (!pkey) return(NULL);
+	key = EVP_PKEY_get1_ECDSA(pkey);
+	EVP_PKEY_free(pkey);
+	if (!key)  return(NULL);
+	*pp = q;
+	if (a)
+		{
+		ECDSA_free(*a);
+		*a = key;
+		}
+	return(key);
+	}
+
+int i2d_ECDSA_PUBKEY(ECDSA *a, unsigned char **pp)
+	{
+	EVP_PKEY *pktmp;
+	int ret;
+	if (!a)	return(0);
+	if ((pktmp = EVP_PKEY_new()) == NULL)
+		{
+		ASN1err(ASN1_F_I2D_ECDSA_PUBKEY, ERR_R_MALLOC_FAILURE);
+		return(0);
+		}
+	EVP_PKEY_set1_ECDSA(pktmp, a);
+	ret = i2d_PUBKEY(pktmp, pp);
+	EVP_PKEY_free(pktmp);
+	return(ret);
+	}
 #endif