intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 46 insertions, 0 deletions

diff --git a/library/cpp/tvmauth/src/rw/rw_sign.c b/library/cpp/tvmauth/src/rw/rw_sign.c
new file mode 100644
index 0000000000..e320808dd3
--- /dev/null
+++ b/library/cpp/tvmauth/src/rw/rw_sign.c
@@ -0,0 +1,46 @@
+#include "rw.h"
+
+TRwSignature* RwSignatureNew(void) {
+    TRwSignature* sig = NULL;
+    sig = malloc(sizeof(TRwSignature));
+    if (!sig)
+        return NULL;
+    sig->S = NULL;
+    return sig;
+}
+
+void RwSignatureFree(TRwSignature* sig) {
+    if (sig) {
+        if (sig->S)
+            BN_free(sig->S);
+        free(sig);
+    }
+}
+
+int RwNoPaddingSign(int flen, const unsigned char* from, unsigned char* to, TRwKey* rw) {
+    int i = 0, r = 0, num = -1;
+    TRwSignature* sig = NULL;
+
+    if (!rw || !rw->N || !rw->Meth || !rw->Meth->RwSign || !from || !to)
+        goto err;
+
+    if ((sig = rw->Meth->RwSign(from, flen, rw)) == NULL)
+        goto err;
+    num = BN_num_bytes(rw->N);
+
+    r = BN_bn2bin(sig->S, to);
+    if (r < 0)
+        goto err;
+
+    /* put zeroes to the rest of the 'to' buffer */
+    for (i = r; i < num; i++) {
+        to[i] = 0x00;
+    }
+
+err:
+    if (sig != NULL) {
+        RwSignatureFree(sig);
+    }
+
+    return r;
+}