X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a..HEAD:/base/keysz.h

diff --git a/base/keysz.h b/base/keysz.h
index 97ed144e..2986d614 100644
--- a/base/keysz.h
+++ b/base/keysz.h
@@ -55,12 +55,15 @@
  *   * @KSZ_SET@ requires that %$k \in {\,a_i\,}$%.
  */
 
+#define KSZ_OPMASK 0x1f			/* Kinds of keysize specs */
 enum {
   KSZ_ANY,				/* Allows any key at all */
   KSZ_RANGE,				/* Allows keys within a range */
   KSZ_SET				/* Allows specific sizes of keys */
 };
 
+#define KSZ_16BIT 0x20			/* Arguments are 16 bits long */
+
 /*----- Key sizes for symmetric algorithms --------------------------------*/
 
 /* --- @keysz@ --- *
@@ -85,6 +88,17 @@ extern size_t keysz(size_t /*sz*/, const octet */*ksz*/);
 #define KSZ_ASSERT(pre, sz)						\
   assert(((void)"Bad key size for " #pre, KSZ_CHECK(pre, sz)))
 
+/* --- @keysz_pad@ --- *
+ *
+ * Arguments:	@size_t sz@ = a proposed key size
+ *		@const octet *ksz@ = pointer to key size table
+ *
+ * Returns:	A key size, at least as large as @sz@, or zero if no such
+ *		size is available.
+ */
+
+extern size_t keysz_pad(size_t /*sz*/, const octet */*ksz*/);
+
 /*----- Key size conversions ----------------------------------------------*/
 
 /* --- @keysz_fromdl@, @_fromschnorr@, @_fromif@, @_fromec@ --- *