+int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
+ const char *opts, const char *what);
+ /* -1 => error */
+
+/* from crypto.c */
+
+void memxor(Byte *dest, const Byte *src, int l);
+
+typedef struct {
+ const char *name;
+ int pad, use_algname;
+} PadMethod;
+
+extern Tcl_ObjType blockcipherkey_type;
+
+/* from algtables.c */
+
+typedef struct {
+ const char *name;
+ int int_offset;
+} BlockCipherPropInfo, HashAlgPropInfo;
+
+typedef struct {
+ const char *name;
+ int hashsize, blocksize, statesize;
+ void (*init)(void *state);
+ void (*update)(void *state, const void *data, int len);
+ void (*final)(void *state, void *digest);
+ void (*oneshot)(void *digest, const void *data, int len);
+} HashAlgInfo;
+
+extern const HashAlgInfo hashalginfos[];
+
+typedef struct {
+ void (*make_schedule)(void *schedule, const void *key, int keylen);
+ void (*crypt)(const void *schedule, const void *in, void *out);
+ /* in and out may be the same, but if they aren't they may not overlap */
+ /* in and out for crypt will have been through block_byteswap */
+} BlockCipherPerDirectionInfo;
+
+typedef struct {
+ const char *name;
+ int blocksize, schedule_size, key_min, key_max;
+ void (*byteswap)(void *block);
+ BlockCipherPerDirectionInfo encrypt, decrypt;
+} BlockCipherAlgInfo;
+
+extern const BlockCipherAlgInfo blockcipheralginfos[];
+
+/* from bcmode.c */
+
+typedef struct {
+ const char *name;
+ int iv_blocks, buf_blocks, mac_blocks;
+
+ /* Each function is allowed to use up to buf_blocks * blocksize
+ * bytes of space in buf. data is blocks * blocksize bytes
+ * long. data should be modified in place by encrypt and decrypt;
+ * modes may not change the size of data. iv is always provided and
+ * is always of length iv_blocks * blocksize; encrypt and
+ * decrypt may modify the iv value (in which case the Tcl caller
+ * will get the modified IV) but this is not recommended. mac
+ * should leave the mac, which must be mac_blocks * blocksize
+ * bytes, in buf. (Therefore mac_blocks must be at least
+ * buf_blocks.)
+ */
+ const char *(*encrypt)(Byte *data, int nblocks,
+ const Byte *iv, Byte *buf,
+ const BlockCipherAlgInfo *alg, int encr,
+ const void *sch);
+ const char *(*decrypt)(Byte *data, int nblocks,
+ const Byte *iv, Byte *buf,
+ const BlockCipherAlgInfo *alg, int encr,
+ const void *sch);
+ const char *(*mac)(const Byte *data, int nblocks,
+ const Byte *iv, Byte *buf,
+ const BlockCipherAlgInfo *alg,
+ const void *sch);
+} BlockCipherModeInfo;
+
+extern const BlockCipherModeInfo blockciphermodeinfos[];
+
+/* from misc.c */
+
+int setnonblock(int fd, int isnonblock);
+
~ian / chiark-tcl.git / blobdiff