[PATCH 6/6] bcrypt: Store full ECCKEY_BLOB struct in BCryptImportKeyPair.
Alistair Leslie-Hughes
leslie_alistair at hotmail.com
Sun Mar 25 21:35:13 CDT 2018
From: Sebastian Lackner <sebastian at fds-team.de>
Signed-off-by: Alistair Leslie-Hughes <leslie_alistair at hotmail.com>
---
dlls/bcrypt/bcrypt_main.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/dlls/bcrypt/bcrypt_main.c b/dlls/bcrypt/bcrypt_main.c
index 2dd588a..82bece5 100644
--- a/dlls/bcrypt/bcrypt_main.c
+++ b/dlls/bcrypt/bcrypt_main.c
@@ -1401,6 +1401,7 @@ static void buffer_append_asn1_r_s( struct buffer *buffer, BYTE *r, DWORD r_len,
static NTSTATUS import_gnutls_pubkey_ecc( struct key *key, gnutls_pubkey_t *gnutls_key )
{
+ BCRYPT_ECCKEY_BLOB *ecc_blob;
gnutls_ecc_curve_t curve;
gnutls_datum_t x, y;
int ret;
@@ -1421,10 +1422,11 @@ static NTSTATUS import_gnutls_pubkey_ecc( struct key *key, gnutls_pubkey_t *gnut
return STATUS_INTERNAL_ERROR;
}
- x.data = key->u.a.pubkey;
- x.size = key->u.a.pubkey_len / 2;
- y.data = key->u.a.pubkey + x.size;
- y.size = x.size;
+ ecc_blob = (BCRYPT_ECCKEY_BLOB *)key->u.a.pubkey;
+ x.data = key->u.a.pubkey + sizeof(*ecc_blob);
+ x.size = ecc_blob->cbKey;
+ y.data = key->u.a.pubkey + sizeof(*ecc_blob) + ecc_blob->cbKey;
+ y.size = ecc_blob->cbKey;
if ((ret = pgnutls_pubkey_import_ecc_raw( *gnutls_key, curve, &x, &y )))
{
@@ -2058,7 +2060,7 @@ NTSTATUS WINAPI BCryptImportKeyPair( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HAN
return STATUS_NO_MEMORY;
key->hdr.magic = MAGIC_KEY;
- if ((status = key_asymmetric_init( key, alg, (BYTE *)(ecc_blob + 1), ecc_blob->cbKey * 2 )))
+ if ((status = key_asymmetric_init( key, alg, (BYTE *)ecc_blob, sizeof(*ecc_blob) + ecc_blob->cbKey * 2 )))
{
heap_free( key );
return status;
--
1.9.1
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