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authormarha <marha@users.sourceforge.net>2015-06-15 21:36:28 +0200
committermarha <marha@users.sourceforge.net>2015-06-15 21:36:28 +0200
commit008a8d8051786badb83e455bd9281103ba9a6470 (patch)
treef99ea672d105271cb60a726fac8022ce47ea2866 /openssl/crypto/ec/ec_asn1.c
parent912e881bec8b16f2331225960645c3bdf5a8ba2d (diff)
parente8d5e7c4bb11f7fcb0a4ba5c13f43e7929849a2f (diff)
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Merge remote-tracking branch 'origin/released'
Conflicts: freetype/src/base/ftfntfmt.c freetype/src/cache/ftcimage.c freetype/src/cid/cidriver.c freetype/src/truetype/ttdriver.c mesalib/src/mesa/drivers/dri/common/dri_util.c mesalib/src/mesa/drivers/dri/swrast/swrast.c openssl/Makefile
Diffstat (limited to 'openssl/crypto/ec/ec_asn1.c')
-rw-r--r--openssl/crypto/ec/ec_asn1.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/openssl/crypto/ec/ec_asn1.c b/openssl/crypto/ec/ec_asn1.c
index b4b0e9f3b..4ad849498 100644
--- a/openssl/crypto/ec/ec_asn1.c
+++ b/openssl/crypto/ec/ec_asn1.c
@@ -1114,7 +1114,7 @@ int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
{
int ret = 0, ok = 0;
unsigned char *buffer = NULL;
- size_t buf_len = 0, tmp_len;
+ size_t buf_len = 0, tmp_len, bn_len;
EC_PRIVATEKEY *priv_key = NULL;
if (a == NULL || a->group == NULL || a->priv_key == NULL ||
@@ -1130,18 +1130,32 @@ int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
priv_key->version = a->version;
- buf_len = (size_t)BN_num_bytes(a->priv_key);
+ bn_len = (size_t)BN_num_bytes(a->priv_key);
+
+ /* Octetstring may need leading zeros if BN is to short */
+
+ buf_len = (EC_GROUP_get_degree(a->group) + 7) / 8;
+
+ if (bn_len > buf_len) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, EC_R_BUFFER_TOO_SMALL);
+ goto err;
+ }
+
buffer = OPENSSL_malloc(buf_len);
if (buffer == NULL) {
ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
goto err;
}
- if (!BN_bn2bin(a->priv_key, buffer)) {
+ if (!BN_bn2bin(a->priv_key, buffer + buf_len - bn_len)) {
ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_BN_LIB);
goto err;
}
+ if (buf_len - bn_len > 0) {
+ memset(buffer, 0, buf_len - bn_len);
+ }
+
if (!M_ASN1_OCTET_STRING_set(priv_key->privateKey, buffer, buf_len)) {
ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
goto err;