1 /* Declaration of functions and data types used for MD5 sum computing
3 Copyright (C) 1995,1996,1997,1999,2000,2001 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
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14 Lesser General Public License for more details.
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18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 #include <sys/types.h>
26 typedef u_int32_t md5_uint32;
27 typedef size_t md5_uintptr;
29 /* Structure to save state of computation between the single steps. */
43 * The following three functions are build up the low level used in
44 * the functions `md5_stream' and `md5_buffer'.
47 /* Initialize structure containing state of computation.
48 (RFC 1321, 3.3: Step 3) */
49 extern void md5_init_ctx (struct md5_ctx *ctx);
51 /* Starting with the result of former calls of this function (or the
52 initialization function update the context for the next LEN bytes
54 It is necessary that LEN is a multiple of 64!!! */
55 extern void md5_process_block (const void *buffer, size_t len,
58 /* Starting with the result of former calls of this function (or the
59 initialization function update the context for the next LEN bytes
61 It is NOT required that LEN is a multiple of 64. */
62 extern void md5_process_bytes (const void *buffer, size_t len,
65 /* Process the remaining bytes in the buffer and put result from CTX
66 in first 16 bytes following RESBUF. The result is always in little
67 endian byte order, so that a byte-wise output yields to the wanted
68 ASCII representation of the message digest.
70 IMPORTANT: On some systems it is required that RESBUF is correctly
71 aligned for a 32 bits value. */
72 extern void *md5_finish_ctx (struct md5_ctx *ctx, void *resbuf);
75 /* Put result from CTX in first 16 bytes following RESBUF. The result is
76 always in little endian byte order, so that a byte-wise output yields
77 to the wanted ASCII representation of the message digest.
79 IMPORTANT: On some systems it is required that RESBUF is correctly
80 aligned for a 32 bits value. */
81 extern void *md5_read_ctx (const struct md5_ctx *ctx, void *resbuf);
84 /* Compute MD5 message digest for bytes read from STREAM. The
85 resulting message digest number will be written into the 16 bytes
86 beginning at RESBLOCK. */
87 extern int md5_stream (FILE *stream, void *resblock);
89 /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The
90 result is always in little endian byte order, so that a byte-wise
91 output yields to the wanted ASCII representation of the message
93 extern void *md5_buffer (const char *buffer, size_t len,