hash r_buf

1 files changed, 8 insertions, 7 deletions

diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c
index a8a1bdb5..b9cbc05f 100644
--- a/source/pdf/pdf-crypt.c
+++ b/source/pdf/pdf-crypt.c
@@ -294,7 +294,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
 		obj = pdf_dict_gets(ctx, dict, "Recipients");
 		if (pdf_is_string(ctx, obj)) {
 			unsigned char idstr[32];
-			int l = pdf_to_str_len(ctx, obj);
+			r_size = pdf_to_str_len(ctx, obj);
 
 			if (pdf_is_array(ctx, id) && pdf_array_len(ctx, id) == 2)
 			{
@@ -320,22 +320,23 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
 					fz_warn(ctx, "length of id[1] is %ld", osz);
 				}
 			}
-			r_buf = fz_malloc(ctx, l);
-			memcpy(r_buf, pdf_to_str_buf(ctx, obj), l);
+			r_buf = fz_malloc(ctx, r_size);
+			memcpy(r_buf, pdf_to_str_buf(ctx, obj), r_size);
 			unsigned char tmpbyte = 0xff;
 			int ididx = 0;
-			for (int i = 0; i < l; i++) {
+			for (int i = 0; i < r_size; i++) {
 				tmpbyte ^= idstr[ididx];
 				ididx = (ididx + 1) % 32;
 				r_buf[i] ^= tmpbyte;
-				// printf("%c", r_buf[i]);
 			}
 		}
 		/* hash some weird thing */
-		/* hash an XML */
+		fz_sha256_update(&sha256, r_buf, r_size);
+
 		fz_sha256_init(&xml_hash);
-		/* hash an XML */
+		fz_sha256_update(&xml_hash, r_buf, r_size);
 		fz_sha256_final(&xml_hash, xml_hash_sum);
+
 		fz_sha256_update(&sha256, xml_hash_sum, 32);
 		fz_sha256_final(&sha256, crypt->key);