4 * hbytes raw2h BINARY => hex
5 * hbytes h2raw HEX => binary
7 * hbytes length VALUE => count
8 * hbytes prepend VAR [VALUE ...] = set VAR [concat VALUE ... $VAR]
9 * hbytes append VAR [VALUE ...] = set VAR [concat $VAR VALUE ...]
10 * hbytes concat VAR [VALUE ...] = set VAR [concat VALUE ...]
11 * hbytes unprepend VAR PREFIXLENGTH => prefix (removed from VAR)
12 * hbytes unappend VAR SUFFIXLENGTH => suffix (removed from VAR)
13 * hbytes chopto VAR NEWVARLENGTH => suffix (removed from VAR)
16 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
17 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
18 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
20 * hbytes hash ALG MESSAGE => hash
21 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
34 typedef unsigned char Byte;
38 /* Internal representation details: */
39 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
40 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
41 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
42 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
45 void *begin_complex, *end_0;
46 } HBytes_Value; /* overlays internalRep */
49 Byte *dstart; /* always allocated dynamically */
50 int prespace, len, avail;
52 * | SPARE | USED | SPARE |
53 * |<-prespace->|<-len->| |
57 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
59 /* Public interfaces: */
61 extern Tcl_ObjType hbytes_type;
63 int hbytes_len(const HBytes_Value *v);
64 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
65 int hbytes_issentinel(const HBytes_Value *v);
67 Byte *hbytes_prepend(HBytes_Value *upd, int el);
68 Byte *hbytes_append(HBytes_Value *upd, int el);
69 /* return value is where to put the data */
71 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
72 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
73 /* return value points to the removed data, which remains valid
74 * until next op on the HBytes_Value. If original value is
75 * shorter than rl or negative, returns 0 and does nothing. */
77 void hbytes_empty(HBytes_Value *returns);
78 void hbytes_sentinel(HBytes_Value *returns);
79 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
80 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
81 void hbytes_free(const HBytes_Value *frees);
82 /* _empty, _sentinel and _array do not free or read the old value;
83 * _free it first if needed. _free leaves it garbage, so you
84 * have to call _empty to reuse it. _arrayspace doesn't fill
85 * the array; you get a pointer and must fill it with data
88 /* The value made by hbytes_sentinel should not be passed to
89 * anything except HBYTES_IS..., and hbytes_free. */
93 int staticerr(Tcl_Interp *ip, const char *m);
94 void objfreeir(Tcl_Obj *o);
95 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
96 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
105 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
111 extern Tcl_ObjType enum_nearlytype;
112 extern Tcl_ObjType enum1_nearlytype;
114 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
115 const void *firstentry, size_t entrysize,
117 #define enum_lookup_cached(ip,o,table,what) \
118 (enum_lookup_cached_func((ip),(o), \
119 &(table)[0],sizeof((table)[0]), \
121 /* table should be a pointer to an array of structs of size
122 * entrysize, the first member of which should be a const char*.
123 * The table should finish with a null const char *.
124 * On error, 0 is returned and the ip->result will have been
125 * set to the error message.
128 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
129 const char *opts, const char *what);
134 void memxor(Byte *dest, const Byte *src, int l);
138 int pad, use_algname;
141 Tcl_ObjType blockcipherkey_type;
143 /* from algtables.c */
147 int hashsize, blocksize, statesize;
148 void (*init)(void *state);
149 void (*update)(void *state, const Byte *data, int len);
150 void (*final)(void *state, Byte *digest);
151 void (*oneshot)(Byte *digest, const Byte *data, int len);
154 extern const HashAlgInfo hashalginfos[];
157 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
158 void (*crypt)(const void *schedule, const void *in, void *out);
159 /* in and out may be the same, but if they aren't they may not overlap */
160 /* in and out for crypt will have been through block_byteswap */
161 } BlockCipherDirectionInfo;
165 int blocksize, schedule_size, key_min, key_max;
166 void (*byteswap)(Byte *block);
167 BlockCipherDirectionInfo encrypt, decrypt;
168 } BlockCipherAlgInfo;
170 extern const BlockCipherAlgInfo blockcipheralginfos[];
176 int iv_blocks, buf_blocks;
177 const char *(*encrypt)(Byte *data, int blocks,
178 const Byte *iv, Byte *buf,
179 const BlockCipherAlgInfo *alg, int encr,
180 int blocksize, const void *sch);
181 const char *(*decrypt)(Byte *data, int blocks,
182 const Byte *iv, Byte *buf,
183 const BlockCipherAlgInfo *alg, int encr,
184 int blocksize, const void *sch);
185 /* in each case, *iv is provided, but may be modified */
186 } BlockCipherModeInfo;
188 extern const BlockCipherModeInfo blockciphermodeinfos[];
192 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
194 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
195 #define TFREE(f) (Tcl_Free((void*)(f)))