1 files changed, 29 insertions, 11 deletions

diff --git a/openssl/crypto/ec/ec_asn1.c b/openssl/crypto/ec/ec_asn1.c
index e94f34e11..52d31c2f9 100644
--- a/openssl/crypto/ec/ec_asn1.c
+++ b/openssl/crypto/ec/ec_asn1.c
@@ -1183,29 +1183,46 @@ EC_KEY *d2i_ECPrivateKey(EC_KEY **a, const unsigned char **in, long len)
 		goto err;
 		}
 
+	if (ret->pub_key)
+		EC_POINT_clear_free(ret->pub_key);
+	ret->pub_key = EC_POINT_new(ret->group);
+	if (ret->pub_key == NULL)
+		{
+		ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+		goto err;
+		}
+
 	if (priv_key->publicKey)
 		{
 		const unsigned char *pub_oct;
-		size_t pub_oct_len;
+		int pub_oct_len;
 
-		if (ret->pub_key)
-			EC_POINT_clear_free(ret->pub_key);
-		ret->pub_key = EC_POINT_new(ret->group);
-		if (ret->pub_key == NULL)
+		pub_oct     = M_ASN1_STRING_data(priv_key->publicKey);
+		pub_oct_len = M_ASN1_STRING_length(priv_key->publicKey);
+		/* The first byte - point conversion form - must be present. */
+                if (pub_oct_len <= 0)
 			{
-			ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+			ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_BUFFER_TOO_SMALL);
 			goto err;
 			}
-		pub_oct     = M_ASN1_STRING_data(priv_key->publicKey);
-		pub_oct_len = M_ASN1_STRING_length(priv_key->publicKey);
-		/* save the point conversion form */
+		/* Save the point conversion form. */
 		ret->conv_form = (point_conversion_form_t)(pub_oct[0] & ~0x01);
 		if (!EC_POINT_oct2point(ret->group, ret->pub_key,
-			pub_oct, pub_oct_len, NULL))
+					pub_oct, (size_t)(pub_oct_len), NULL))
+			{
+			ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+			goto err;
+			}
+		}
+	else
+		{
+		if (!EC_POINT_mul(ret->group, ret->pub_key, ret->priv_key, NULL, NULL, NULL))
 			{
 			ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
 			goto err;
 			}
+		/* Remember the original private-key-only encoding. */
+		ret->enc_flag |= EC_PKEY_NO_PUBKEY;
 		}
 
 	ok = 1;
@@ -1230,7 +1247,8 @@ int	i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
 	size_t          buf_len=0, tmp_len;
 	EC_PRIVATEKEY   *priv_key=NULL;
 
-	if (a == NULL || a->group == NULL || a->priv_key == NULL)
+	if (a == NULL || a->group == NULL || a->priv_key == NULL ||
+	    (!(a->enc_flag & EC_PKEY_NO_PUBKEY) && a->pub_key == NULL))
 		{
 		ECerr(EC_F_I2D_ECPRIVATEKEY,
                       ERR_R_PASSED_NULL_PARAMETER);