1 ;;;; This file implements The MD5 Message-Digest Algorithm, as defined in
2 ;;;; RFC 1321 by R. Rivest, published April 1992.
4 ;;;; It was written by Pierre R. Mai, with copious input from the
5 ;;;; cmucl-help mailing-list hosted at cons.org, in November 2001 and
6 ;;;; has been placed into the public domain.
10 ;;;; While the implementation should work on all conforming Common
11 ;;;; Lisp implementations, it has only been optimized for CMU CL,
12 ;;;; where it achieved comparable performance to the standard md5sum
13 ;;;; utility (within a factor of 1.5 or less on iA32 and UltraSparc
16 ;;;; Since the implementation makes heavy use of arithmetic on
17 ;;;; (unsigned-byte 32) numbers, acceptable performance is likely only
18 ;;;; on CL implementations that support unboxed arithmetic on such
19 ;;;; numbers in some form. For other CL implementations a 16bit
20 ;;;; implementation of MD5 is probably more suitable.
22 ;;;; The code implements correct operation for files of unbounded size
23 ;;;; as is, at the cost of having to do a single generic integer
24 ;;;; addition for each call to update-md5-state. If you call
25 ;;;; update-md5-state frequently with little data, this can pose a
26 ;;;; performance problem. If you can live with a size restriction of
27 ;;;; 512 MB, then you can enable fast fixnum arithmetic by putting
28 ;;;; :md5-small-length onto *features* prior to compiling this file.
30 ;;;; This software is "as is", and has no warranty of any kind. The
31 ;;;; authors assume no responsibility for the consequences of any use
32 ;;;; of this software.
34 (defpackage :SB-MD5 (:use :CL)
36 ;; Low-Level types and functions
37 #:md5-regs #:initial-md5-regs #:md5regs-digest
38 #:update-md5-block #:fill-block #:fill-block-ub8 #:fill-block-char
39 ;; Mid-Level types and functions
40 #:md5-state #:md5-state-p #:make-md5-state
41 #:update-md5-state #:finalize-md5-state
42 ;; High-Level functions on sequences, streams and files
43 #:md5sum-sequence #:md5sum-stream #:md5sum-file))
48 (eval-when (:compile-toplevel)
49 (defparameter *old-expansion-limit* ext:*inline-expansion-limit*)
50 (setq ext:*inline-expansion-limit* (max ext:*inline-expansion-limit* 1000)))
53 (eval-when (:compile-toplevel :execute)
54 (defparameter *old-features* *features*)
55 (pushnew (c:backend-byte-order c:*target-backend*) *features*))
58 (eval-when (:compile-toplevel)
59 (defparameter *old-features* *features*)
60 (pushnew sb-c:*backend-byte-order* *features*))
62 ;;; Section 2: Basic Datatypes
65 "Corresponds to the 32bit quantity word of the MD5 Spec"
68 (defmacro assemble-ub32 (a b c d)
69 "Assemble an ub32 value from the given (unsigned-byte 8) values,
70 where a is the intended low-order byte and d the high-order byte."
71 `(the ub32 (logior (ash ,d 24) (ash ,c 16) (ash ,b 8) ,a)))
73 ;;; Section 3.4: Auxilliary functions
75 (declaim (inline f g h i)
76 (ftype (function (ub32 ub32 ub32) ub32) f g h i))
79 (declare (type ub32 x y z)
80 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
82 (kernel:32bit-logical-or (kernel:32bit-logical-and x y)
83 (kernel:32bit-logical-andc1 x z))
85 (sb-kernel:32bit-logical-or (sb-kernel:32bit-logical-and x y)
86 (sb-kernel:32bit-logical-andc1 x z))
88 (logior (logand x y) (logandc1 x z)))
91 (declare (type ub32 x y z)
92 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
94 (kernel:32bit-logical-or (kernel:32bit-logical-and x z)
95 (kernel:32bit-logical-andc2 y z))
97 (sb-kernel:32bit-logical-or (sb-kernel:32bit-logical-and x z)
98 (sb-kernel:32bit-logical-andc2 y z))
100 (logior (logand x z) (logandc2 y z)))
103 (declare (type ub32 x y z)
104 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
106 (kernel:32bit-logical-xor x (kernel:32bit-logical-xor y z))
108 (sb-kernel:32bit-logical-xor x (sb-kernel:32bit-logical-xor y z))
113 (declare (type ub32 x y z)
114 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
116 (kernel:32bit-logical-xor y (kernel:32bit-logical-orc2 x z))
118 (sb-kernel:32bit-logical-xor y (sb-kernel:32bit-logical-orc2 x z))
120 (logxor y (logorc2 x z)))
122 (declaim (inline mod32+)
123 (ftype (function (ub32 ub32) ub32) mod32+))
125 (declare (type ub32 a b) (optimize (speed 3) (safety 0) (space 0) (debug 0)))
126 (ldb (byte 32 0) (+ a b)))
129 (define-compiler-macro mod32+ (a b)
130 `(ext:truly-the ub32 (+ ,a ,b)))
133 ;;; FIXME: Check whether this actually does the right thing on the
135 (define-compiler-macro mod32+ (a b)
136 `(sb-ext:truly-the ub32 (+ ,a ,b)))
138 (declaim (inline rol32)
139 (ftype (function (ub32 (unsigned-byte 5)) ub32) rol32))
141 (declare (type ub32 a) (type (unsigned-byte 5) s)
142 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
144 (kernel:32bit-logical-or #+little-endian (kernel:shift-towards-end a s)
145 #+big-endian (kernel:shift-towards-start a s)
148 (sb-rotate-byte:rotate-byte s (byte 32 0) a)
150 (logior (ldb (byte 32 0) (ash a s)) (ash a (- s 32))))
152 ;;; Section 3.4: Table T
154 (eval-when (:compile-toplevel :load-toplevel :execute)
155 (defparameter *t* (make-array 64 :element-type 'ub32
157 (loop for i from 1 to 64
161 (abs (sin (float i 0.0d0)))))))))
163 ;;; Section 3.4: Helper Macro for single round definitions
165 (defmacro with-md5-round ((op block) &rest clauses)
166 (loop for (a b c d k s i) in clauses
168 `(setq ,a (mod32+ ,b (rol32 (mod32+ (mod32+ ,a (,op ,b ,c ,d))
169 (mod32+ (aref ,block ,k)
174 (return `(progn ,@result))))
176 ;;; Section 3.3: (Initial) MD5 Working Set
179 "The working state of the MD5 algorithm, which contains the 4 32-bit
180 registers A, B, C and D."
181 `(simple-array (unsigned-byte 32) (4)))
183 (defmacro md5-regs-a (regs)
186 (defmacro md5-regs-b (regs)
189 (defmacro md5-regs-c (regs)
192 (defmacro md5-regs-d (regs)
195 (defconstant +md5-magic-a+ (assemble-ub32 #x01 #x23 #x45 #x67)
196 "Initial value of Register A of the MD5 working state.")
197 (defconstant +md5-magic-b+ (assemble-ub32 #x89 #xab #xcd #xef)
198 "Initial value of Register B of the MD5 working state.")
199 (defconstant +md5-magic-c+ (assemble-ub32 #xfe #xdc #xba #x98)
200 "Initial value of Register C of the MD5 working state.")
201 (defconstant +md5-magic-d+ (assemble-ub32 #x76 #x54 #x32 #x10)
202 "Initial value of Register D of the MD5 working state.")
204 (declaim (inline initial-md5-regs))
205 (defun initial-md5-regs ()
206 "Create the initial working state of an MD5 run."
207 (declare (optimize (speed 3) (safety 0) (space 0) (debug 0)))
208 (let ((regs (make-array 4 :element-type '(unsigned-byte 32))))
209 (declare (type md5-regs regs))
210 (setf (md5-regs-a regs) +md5-magic-a+
211 (md5-regs-b regs) +md5-magic-b+
212 (md5-regs-c regs) +md5-magic-c+
213 (md5-regs-d regs) +md5-magic-d+)
216 ;;; Section 3.4: Operation on 16-Word Blocks
218 (defun update-md5-block (regs block)
219 "This is the core part of the MD5 algorithm. It takes a complete 16
220 word block of input, and updates the working state in A, B, C, and D
222 (declare (type md5-regs regs)
223 (type (simple-array ub32 (16)) block)
224 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
225 (let ((a (md5-regs-a regs)) (b (md5-regs-b regs))
226 (c (md5-regs-c regs)) (d (md5-regs-d regs)))
227 (declare (type ub32 a b c d))
229 (with-md5-round (f block)
230 (A B C D 0 7 1)(D A B C 1 12 2)(C D A B 2 17 3)(B C D A 3 22 4)
231 (A B C D 4 7 5)(D A B C 5 12 6)(C D A B 6 17 7)(B C D A 7 22 8)
232 (A B C D 8 7 9)(D A B C 9 12 10)(C D A B 10 17 11)(B C D A 11 22 12)
233 (A B C D 12 7 13)(D A B C 13 12 14)(C D A B 14 17 15)(B C D A 15 22 16))
235 (with-md5-round (g block)
236 (A B C D 1 5 17)(D A B C 6 9 18)(C D A B 11 14 19)(B C D A 0 20 20)
237 (A B C D 5 5 21)(D A B C 10 9 22)(C D A B 15 14 23)(B C D A 4 20 24)
238 (A B C D 9 5 25)(D A B C 14 9 26)(C D A B 3 14 27)(B C D A 8 20 28)
239 (A B C D 13 5 29)(D A B C 2 9 30)(C D A B 7 14 31)(B C D A 12 20 32))
241 (with-md5-round (h block)
242 (A B C D 5 4 33)(D A B C 8 11 34)(C D A B 11 16 35)(B C D A 14 23 36)
243 (A B C D 1 4 37)(D A B C 4 11 38)(C D A B 7 16 39)(B C D A 10 23 40)
244 (A B C D 13 4 41)(D A B C 0 11 42)(C D A B 3 16 43)(B C D A 6 23 44)
245 (A B C D 9 4 45)(D A B C 12 11 46)(C D A B 15 16 47)(B C D A 2 23 48))
247 (with-md5-round (i block)
248 (A B C D 0 6 49)(D A B C 7 10 50)(C D A B 14 15 51)(B C D A 5 21 52)
249 (A B C D 12 6 53)(D A B C 3 10 54)(C D A B 10 15 55)(B C D A 1 21 56)
250 (A B C D 8 6 57)(D A B C 15 10 58)(C D A B 6 15 59)(B C D A 13 21 60)
251 (A B C D 4 6 61)(D A B C 11 10 62)(C D A B 2 15 63)(B C D A 9 21 64))
253 (setf (md5-regs-a regs) (mod32+ (md5-regs-a regs) a)
254 (md5-regs-b regs) (mod32+ (md5-regs-b regs) b)
255 (md5-regs-c regs) (mod32+ (md5-regs-c regs) c)
256 (md5-regs-d regs) (mod32+ (md5-regs-d regs) d))
259 ;;; Section 3.4: Converting 8bit-vectors into 16-Word Blocks
261 (declaim (inline fill-block fill-block-ub8 fill-block-char))
262 (defun fill-block (block buffer offset)
263 "Convert a complete 64 byte input vector segment into the given 16
264 word MD5 block. This currently works on (unsigned-byte 8) and
265 character simple-arrays, via the functions `fill-block-ub8' and
266 `fill-block-char' respectively."
267 (declare (type (integer 0 #.(- most-positive-fixnum 64)) offset)
268 (type (simple-array ub32 (16)) block)
269 (type (simple-array * (*)) buffer)
270 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
272 ((simple-array (unsigned-byte 8) (*))
273 (fill-block-ub8 block buffer offset))
275 (fill-block-char block buffer offset))))
277 (defun fill-block-ub8 (block buffer offset)
278 "Convert a complete 64 (unsigned-byte 8) input vector segment
279 starting from offset into the given 16 word MD5 block."
280 (declare (type (integer 0 #.(- most-positive-fixnum 64)) offset)
281 (type (simple-array ub32 (16)) block)
282 (type (simple-array (unsigned-byte 8) (*)) buffer)
283 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
284 #+(and :cmu :little-endian)
285 (kernel:bit-bash-copy
286 buffer (+ (* vm:vector-data-offset vm:word-bits) (* offset vm:byte-bits))
287 block (* vm:vector-data-offset vm:word-bits)
289 #+(and :sbcl :little-endian)
290 (sb-kernel:bit-bash-copy
291 buffer (+ (* sb-vm:vector-data-offset sb-vm:n-word-bits)
292 (* offset sb-vm:n-byte-bits))
293 block (* sb-vm:vector-data-offset sb-vm:n-word-bits)
294 (* 64 sb-vm:n-byte-bits))
295 #-(or (and :sbcl :little-endian) (and :cmu :little-endian))
296 (loop for i of-type (integer 0 16) from 0
297 for j of-type (integer 0 #.most-positive-fixnum)
298 from offset to (+ offset 63) by 4
301 (assemble-ub32 (aref buffer j)
302 (aref buffer (+ j 1))
303 (aref buffer (+ j 2))
304 (aref buffer (+ j 3))))))
306 (defun fill-block-char (block buffer offset)
307 "Convert a complete 64 character input string segment starting from
308 offset into the given 16 word MD5 block."
309 (declare (type (integer 0 #.(- most-positive-fixnum 64)) offset)
310 (type (simple-array ub32 (16)) block)
311 (type simple-string buffer)
312 (optimize (speed 3) (safety 0) (space 0) (debug 0)))
313 #+(and :cmu :little-endian)
314 (kernel:bit-bash-copy
315 buffer (+ (* vm:vector-data-offset vm:word-bits) (* offset vm:byte-bits))
316 block (* vm:vector-data-offset vm:word-bits)
318 #+(and :sbcl :little-endian)
319 (sb-kernel:bit-bash-copy
320 buffer (+ (* sb-vm:vector-data-offset sb-vm:n-word-bits)
321 (* offset sb-vm:n-byte-bits))
322 block (* sb-vm:vector-data-offset sb-vm:n-word-bits)
323 (* 64 sb-vm:n-byte-bits))
324 #-(or (and :sbcl :little-endian) (and :cmu :little-endian))
325 (loop for i of-type (integer 0 16) from 0
326 for j of-type (integer 0 #.most-positive-fixnum)
327 from offset to (+ offset 63) by 4
330 (assemble-ub32 (char-code (schar buffer j))
331 (char-code (schar buffer (+ j 1)))
332 (char-code (schar buffer (+ j 2)))
333 (char-code (schar buffer (+ j 3)))))))
335 ;;; Section 3.5: Message Digest Output
337 (declaim (inline md5regs-digest))
338 (defun md5regs-digest (regs)
339 "Create the final 16 byte message-digest from the MD5 working state
340 in regs. Returns a (simple-array (unsigned-byte 8) (16))."
341 (declare (optimize (speed 3) (safety 0) (space 0) (debug 0))
342 (type md5-regs regs))
343 (let ((result (make-array 16 :element-type '(unsigned-byte 8))))
344 (declare (type (simple-array (unsigned-byte 8) (16)) result))
345 (macrolet ((frob (reg offset)
346 (let ((var (gensym)))
348 (declare (type ub32 ,var))
350 (aref result ,offset) (ldb (byte 8 0) ,var)
351 (aref result ,(+ offset 1)) (ldb (byte 8 8) ,var)
352 (aref result ,(+ offset 2)) (ldb (byte 8 16) ,var)
353 (aref result ,(+ offset 3)) (ldb (byte 8 24) ,var))))))
354 (frob (md5-regs-a regs) 0)
355 (frob (md5-regs-b regs) 4)
356 (frob (md5-regs-c regs) 8)
357 (frob (md5-regs-d regs) 12))
360 ;;; Mid-Level Drivers
362 (defstruct (md5-state
363 (:constructor make-md5-state ())
365 (regs (initial-md5-regs) :type md5-regs :read-only t)
367 #-md5-small-length (integer 0 *)
368 #+md5-small-length (unsigned-byte 29))
369 (block (make-array 16 :element-type '(unsigned-byte 32)) :read-only t
370 :type (simple-array (unsigned-byte 32) (16)))
371 (buffer (make-array 64 :element-type '(unsigned-byte 8)) :read-only t
372 :type (simple-array (unsigned-byte 8) (64)))
373 (buffer-index 0 :type (integer 0 63))
376 (declaim (inline copy-to-buffer))
377 (defun copy-to-buffer (from from-offset count buffer buffer-offset)
378 "Copy a partial segment from input vector from starting at
379 from-offset and copying count elements into the 64 byte buffer
380 starting at buffer-offset."
381 (declare (optimize (speed 3) (safety 0) (space 0) (debug 0))
382 (type (unsigned-byte 29) from-offset)
383 (type (integer 0 63) count buffer-offset)
384 (type (simple-array * (*)) from)
385 (type (simple-array (unsigned-byte 8) (64)) buffer))
387 (kernel:bit-bash-copy
388 from (+ (* vm:vector-data-offset vm:word-bits) (* from-offset vm:byte-bits))
389 buffer (+ (* vm:vector-data-offset vm:word-bits)
390 (* buffer-offset vm:byte-bits))
391 (* count vm:byte-bits))
393 (sb-kernel:bit-bash-copy
394 from (+ (* sb-vm:vector-data-offset sb-vm:n-word-bits)
395 (* from-offset sb-vm:n-byte-bits))
396 buffer (+ (* sb-vm:vector-data-offset sb-vm:n-word-bits)
397 (* buffer-offset sb-vm:n-byte-bits))
398 (* count sb-vm:n-byte-bits))
402 (loop for buffer-index of-type (integer 0 64) from buffer-offset
403 for from-index of-type fixnum from from-offset
404 below (+ from-offset count)
406 (setf (aref buffer buffer-index)
407 (char-code (schar (the simple-string from) from-index)))))
408 ((simple-array (unsigned-byte 8) (*))
409 (loop for buffer-index of-type (integer 0 64) from buffer-offset
410 for from-index of-type fixnum from from-offset
411 below (+ from-offset count)
413 (setf (aref buffer buffer-index)
414 (aref (the (simple-array (unsigned-byte 8) (*)) from)
417 (defun update-md5-state (state sequence &key (start 0) (end (length sequence)))
418 "Update the given md5-state from sequence, which is either a
419 simple-string or a simple-array with element-type (unsigned-byte 8),
420 bounded by start and end, which must be numeric bounding-indices."
421 (declare (type md5-state state)
422 (type (simple-array * (*)) sequence)
423 (type fixnum start end)
424 (optimize (speed 3) #+(or cmu sbcl) (safety 0) (space 0) (debug 0))
426 (ext:optimize-interface (safety 1) (debug 1)))
427 (let ((regs (md5-state-regs state))
428 (block (md5-state-block state))
429 (buffer (md5-state-buffer state))
430 (buffer-index (md5-state-buffer-index state))
431 (length (- end start)))
432 (declare (type md5-regs regs) (type fixnum length)
433 (type (integer 0 63) buffer-index)
434 (type (simple-array (unsigned-byte 32) (16)) block)
435 (type (simple-array (unsigned-byte 8) (64)) buffer))
437 (unless (zerop buffer-index)
438 (let ((amount (min (- 64 buffer-index) length)))
439 (declare (type (integer 0 63) amount))
440 (copy-to-buffer sequence start amount buffer buffer-index)
441 (setq start (the fixnum (+ start amount)))
443 (setf (md5-state-buffer-index state) (+ buffer-index amount))
444 (return-from update-md5-state state)))
445 (fill-block-ub8 block buffer 0)
446 (update-md5-block regs block))
447 ;; Handle main-part and new-rest
449 ((simple-array (unsigned-byte 8) (*))
451 (declare (type (simple-array (unsigned-byte 8) (*)) sequence))
452 (loop for offset of-type (unsigned-byte 29) from start below end by 64
453 until (< (- end offset) 64)
455 (fill-block-ub8 block sequence offset)
456 (update-md5-block regs block)
458 (let ((amount (- end offset)))
459 (unless (zerop amount)
460 (copy-to-buffer sequence offset amount buffer 0))
461 (setf (md5-state-buffer-index state) amount)))))
464 (declare (type simple-string sequence))
465 (loop for offset of-type (unsigned-byte 29) from start below end by 64
466 until (< (- end offset) 64)
468 (fill-block-char block sequence offset)
469 (update-md5-block regs block)
471 (let ((amount (- end offset)))
472 (unless (zerop amount)
473 (copy-to-buffer sequence offset amount buffer 0))
474 (setf (md5-state-buffer-index state) amount))))))
475 (setf (md5-state-amount state)
476 #-md5-small-length (+ (md5-state-amount state) length)
477 #+md5-small-length (the (unsigned-byte 29)
478 (+ (md5-state-amount state) length)))
481 (defun finalize-md5-state (state)
482 "If the given md5-state has not already been finalized, finalize it,
483 by processing any remaining input in its buffer, with suitable padding
484 and appended bit-length, as specified by the MD5 standard.
486 The resulting MD5 message-digest is returned as an array of sixteen
487 (unsigned-byte 8) values. Calling `update-md5-state' after a call to
488 `finalize-md5-state' results in unspecified behaviour."
489 (declare (type md5-state state)
490 (optimize (speed 3) #+(or cmu sbcl) (safety 0) (space 0) (debug 0))
492 (ext:optimize-interface (safety 1) (debug 1)))
493 (or (md5-state-finalized-p state)
494 (let ((regs (md5-state-regs state))
495 (block (md5-state-block state))
496 (buffer (md5-state-buffer state))
497 (buffer-index (md5-state-buffer-index state))
498 (total-length (* 8 (md5-state-amount state))))
499 (declare (type md5-regs regs)
500 (type (integer 0 63) buffer-index)
501 (type (simple-array ub32 (16)) block)
502 (type (simple-array (unsigned-byte 8) (*)) buffer))
503 ;; Add mandatory bit 1 padding
504 (setf (aref buffer buffer-index) #x80)
505 ;; Fill with 0 bit padding
506 (loop for index of-type (integer 0 64)
507 from (1+ buffer-index) below 64
508 do (setf (aref buffer index) #x00))
509 (fill-block-ub8 block buffer 0)
510 ;; Flush block first if length wouldn't fit
511 (when (>= buffer-index 56)
512 (update-md5-block regs block)
513 ;; Create new fully 0 padded block
514 (loop for index of-type (integer 0 16) from 0 below 16
515 do (setf (aref block index) #x00000000)))
516 ;; Add 64bit message bit length
517 (setf (aref block 14) (ldb (byte 32 0) total-length))
519 (setf (aref block 15) (ldb (byte 32 32) total-length))
521 (update-md5-block regs block)
522 ;; Done, remember digest for later calls
523 (setf (md5-state-finalized-p state)
524 (md5regs-digest regs)))))
526 ;;; High-Level Drivers
528 (defun md5sum-sequence (sequence &key (start 0) end)
529 "Calculate the MD5 message-digest of data in sequence. On CMU CL
530 this works for all sequences whose element-type is supported by the
531 underlying MD5 routines, on other implementations it only works for 1d
532 simple-arrays with such element types."
533 (declare (optimize (speed 3) (space 0) (debug 0))
534 (type vector sequence) (type fixnum start))
535 (let ((state (make-md5-state)))
536 (declare (type md5-state state))
538 (lisp::with-array-data ((data sequence) (real-start start) (real-end end))
539 (update-md5-state state data :start real-start :end real-end))
541 (sb-kernel:with-array-data ((data sequence) (real-start start) (real-end end))
542 (update-md5-state state data :start real-start :end real-end))
544 (let ((real-end (or end (length sequence))))
545 (declare (type fixnum real-end))
546 (update-md5-state state sequence :start start :end real-end))
547 (finalize-md5-state state)))
549 (defconstant +buffer-size+ (* 128 1024)
550 "Size of internal buffer to use for md5sum-stream and md5sum-file
551 operations. This should be a multiple of 64, the MD5 block size.")
553 (deftype buffer-index () `(integer 0 ,+buffer-size+))
555 (defun md5sum-stream (stream)
556 "Calculate an MD5 message-digest of the contents of stream. Its
557 element-type has to be either (unsigned-byte 8) or character."
558 (declare (optimize (speed 3) (space 0) (debug 0)))
559 (let ((state (make-md5-state)))
560 (declare (type md5-state state))
562 ((equal (stream-element-type stream) '(unsigned-byte 8))
563 (let ((buffer (make-array +buffer-size+
564 :element-type '(unsigned-byte 8))))
565 (declare (type (simple-array (unsigned-byte 8) (#.+buffer-size+))
567 (loop for bytes of-type buffer-index = (read-sequence buffer stream)
568 do (update-md5-state state buffer :end bytes)
569 until (< bytes +buffer-size+)
571 (return (finalize-md5-state state)))))
572 ((equal (stream-element-type stream) 'character)
573 (let ((buffer (make-string +buffer-size+)))
574 (declare (type (simple-string #.+buffer-size+) buffer))
575 (loop for bytes of-type buffer-index = (read-sequence buffer stream)
576 do (update-md5-state state buffer :end bytes)
577 until (< bytes +buffer-size+)
579 (return (finalize-md5-state state)))))
581 (error "Unsupported stream element-type ~S for stream ~S."
582 (stream-element-type stream) stream)))))
584 (defun md5sum-file (pathname)
585 "Calculate the MD5 message-digest of the file specified by pathname."
586 (declare (optimize (speed 3) (space 0) (debug 0)))
587 (with-open-file (stream pathname :element-type '(unsigned-byte 8))
588 (md5sum-stream stream)))
591 (eval-when (:compile-toplevel :execute)
592 (setq *features* *old-features*))
595 (eval-when (:compile-toplevel)
596 (setq ext:*inline-expansion-limit* *old-expansion-limit*))
599 (eval-when (:compile-toplevel)
600 (setq *features* *old-features*))