3.\"
4.\" Standard preamble:
5.\" ======================================================================
6.de Sh \" Subsection heading
7.br
8.if t .Sp
9.ne 5
10.PP
11\fB\\$1\fR
12.PP
13..
14.de Sp \" Vertical space (when we can't use .PP)
15.if t .sp .5v
16.if n .sp
17..
18.de Ip \" List item
19.br
20.ie \\n(.$>=3 .ne \\$3
21.el .ne 3
22.IP "\\$1" \\$2
23..
24.de Vb \" Begin verbatim text
25.ft CW
26.nf
27.ne \\$1
28..
29.de Ve \" End verbatim text
30.ft R
31
32.fi
33..
34.\" Set up some character translations and predefined strings. \*(-- will
35.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
36.\" double quote, and \*(R" will give a right double quote. | will give a
37.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used
38.\" to do unbreakable dashes and therefore won't be available. \*(C` and
39.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<>
40.tr \(*W-|\(bv\*(Tr
41.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
42.ie n \{\
43. ds -- \(*W-
44. ds PI pi
45. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
46. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
47. ds L" ""
48. ds R" ""
49. ds C` ""
50. ds C' ""
51'br\}
52.el\{\
53. ds -- \|\(em\|
54. ds PI \(*p
55. ds L" ``
56. ds R" ''
57'br\}
58.\"
59.\" If the F register is turned on, we'll generate index entries on stderr
60.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and
61.\" index entries marked with X<> in POD. Of course, you'll have to process
62.\" the output yourself in some meaningful fashion.
63.if \nF \{\
64. de IX
65. tm Index:\\$1\t\\n%\t"\\$2"
66..
67. nr % 0
68. rr F
69.\}
70.\"
71.\" For nroff, turn off justification. Always turn off hyphenation; it
72.\" makes way too many mistakes in technical documents.
73.hy 0
74.if n .na
75.\"
76.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
77.\" Fear. Run. Save yourself. No user-serviceable parts.
78.bd B 3
79. \" fudge factors for nroff and troff
80.if n \{\
81. ds #H 0
82. ds #V .8m
83. ds #F .3m
84. ds #[ \f1
85. ds #] \fP
86.\}
87.if t \{\
88. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
89. ds #V .6m
90. ds #F 0
91. ds #[ \&
92. ds #] \&
93.\}
94. \" simple accents for nroff and troff
95.if n \{\
96. ds ' \&
97. ds ` \&
98. ds ^ \&
99. ds , \&
100. ds ~ ~
101. ds /
102.\}
103.if t \{\
104. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
105. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
106. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
107. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
108. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
109. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
110.\}
111. \" troff and (daisy-wheel) nroff accents
112.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
113.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
114.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
115.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
116.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
117.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
118.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
119.ds ae a\h'-(\w'a'u*4/10)'e
120.ds Ae A\h'-(\w'A'u*4/10)'E
121. \" corrections for vroff
122.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
123.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
124. \" for low resolution devices (crt and lpr)
125.if \n(.H>23 .if \n(.V>19 \
126\{\
127. ds : e
128. ds 8 ss
129. ds o a
130. ds d- d\h'-1'\(ga
131. ds D- D\h'-1'\(hy
132. ds th \o'bp'
133. ds Th \o'LP'
134. ds ae ae
135. ds Ae AE
136.\}
137.rm #[ #] #H #V #F C
138.\" ======================================================================
139.\"
140.IX Title "md5 3"
| 3.\"
4.\" Standard preamble:
5.\" ======================================================================
6.de Sh \" Subsection heading
7.br
8.if t .Sp
9.ne 5
10.PP
11\fB\\$1\fR
12.PP
13..
14.de Sp \" Vertical space (when we can't use .PP)
15.if t .sp .5v
16.if n .sp
17..
18.de Ip \" List item
19.br
20.ie \\n(.$>=3 .ne \\$3
21.el .ne 3
22.IP "\\$1" \\$2
23..
24.de Vb \" Begin verbatim text
25.ft CW
26.nf
27.ne \\$1
28..
29.de Ve \" End verbatim text
30.ft R
31
32.fi
33..
34.\" Set up some character translations and predefined strings. \*(-- will
35.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
36.\" double quote, and \*(R" will give a right double quote. | will give a
37.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used
38.\" to do unbreakable dashes and therefore won't be available. \*(C` and
39.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<>
40.tr \(*W-|\(bv\*(Tr
41.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
42.ie n \{\
43. ds -- \(*W-
44. ds PI pi
45. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
46. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
47. ds L" ""
48. ds R" ""
49. ds C` ""
50. ds C' ""
51'br\}
52.el\{\
53. ds -- \|\(em\|
54. ds PI \(*p
55. ds L" ``
56. ds R" ''
57'br\}
58.\"
59.\" If the F register is turned on, we'll generate index entries on stderr
60.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and
61.\" index entries marked with X<> in POD. Of course, you'll have to process
62.\" the output yourself in some meaningful fashion.
63.if \nF \{\
64. de IX
65. tm Index:\\$1\t\\n%\t"\\$2"
66..
67. nr % 0
68. rr F
69.\}
70.\"
71.\" For nroff, turn off justification. Always turn off hyphenation; it
72.\" makes way too many mistakes in technical documents.
73.hy 0
74.if n .na
75.\"
76.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
77.\" Fear. Run. Save yourself. No user-serviceable parts.
78.bd B 3
79. \" fudge factors for nroff and troff
80.if n \{\
81. ds #H 0
82. ds #V .8m
83. ds #F .3m
84. ds #[ \f1
85. ds #] \fP
86.\}
87.if t \{\
88. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
89. ds #V .6m
90. ds #F 0
91. ds #[ \&
92. ds #] \&
93.\}
94. \" simple accents for nroff and troff
95.if n \{\
96. ds ' \&
97. ds ` \&
98. ds ^ \&
99. ds , \&
100. ds ~ ~
101. ds /
102.\}
103.if t \{\
104. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
105. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
106. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
107. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
108. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
109. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
110.\}
111. \" troff and (daisy-wheel) nroff accents
112.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
113.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
114.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
115.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
116.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
117.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
118.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
119.ds ae a\h'-(\w'a'u*4/10)'e
120.ds Ae A\h'-(\w'A'u*4/10)'E
121. \" corrections for vroff
122.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
123.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
124. \" for low resolution devices (crt and lpr)
125.if \n(.H>23 .if \n(.V>19 \
126\{\
127. ds : e
128. ds 8 ss
129. ds o a
130. ds d- d\h'-1'\(ga
131. ds D- D\h'-1'\(hy
132. ds th \o'bp'
133. ds Th \o'LP'
134. ds ae ae
135. ds Ae AE
136.\}
137.rm #[ #] #H #V #F C
138.\" ======================================================================
139.\"
140.IX Title "md5 3"
|
142.UC
143.SH "NAME"
144\&\s-1MD2\s0, \s-1MD4\s0, \s-1MD5\s0, MD2_Init, MD2_Update, MD2_Final, MD4_Init, MD4_Update,
145MD4_Final, MD5_Init, MD5_Update, MD5_Final \- \s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 hash functions
146.SH "SYNOPSIS"
147.IX Header "SYNOPSIS"
148.Vb 1
149\& #include <openssl/md2.h>
150.Ve
151.Vb 2
152\& unsigned char *MD2(const unsigned char *d, unsigned long n,
153\& unsigned char *md);
154.Ve
155.Vb 4
156\& void MD2_Init(MD2_CTX *c);
157\& void MD2_Update(MD2_CTX *c, const unsigned char *data,
158\& unsigned long len);
159\& void MD2_Final(unsigned char *md, MD2_CTX *c);
160.Ve
161.Vb 1
162\& #include <openssl/md4.h>
163.Ve
164.Vb 2
165\& unsigned char *MD4(const unsigned char *d, unsigned long n,
166\& unsigned char *md);
167.Ve
168.Vb 4
169\& void MD4_Init(MD4_CTX *c);
170\& void MD4_Update(MD4_CTX *c, const void *data,
171\& unsigned long len);
172\& void MD4_Final(unsigned char *md, MD4_CTX *c);
173.Ve
174.Vb 1
175\& #include <openssl/md5.h>
176.Ve
177.Vb 2
178\& unsigned char *MD5(const unsigned char *d, unsigned long n,
179\& unsigned char *md);
180.Ve
181.Vb 4
182\& void MD5_Init(MD5_CTX *c);
183\& void MD5_Update(MD5_CTX *c, const void *data,
184\& unsigned long len);
185\& void MD5_Final(unsigned char *md, MD5_CTX *c);
186.Ve
187.SH "DESCRIPTION"
188.IX Header "DESCRIPTION"
189\&\s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 are cryptographic hash functions with a 128 bit output.
190.PP
191\&\fIMD2()\fR, \fIMD4()\fR, and \fIMD5()\fR compute the \s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 message digest
192of the \fBn\fR bytes at \fBd\fR and place it in \fBmd\fR (which must have space
193for \s-1MD2_DIGEST_LENGTH\s0 == \s-1MD4_DIGEST_LENGTH\s0 == \s-1MD5_DIGEST_LENGTH\s0 == 16
194bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest is placed in a static
195array.
196.PP
197The following functions may be used if the message is not completely
198stored in memory:
199.PP
200\&\fIMD2_Init()\fR initializes a \fB\s-1MD2_CTX\s0\fR structure.
201.PP
202\&\fIMD2_Update()\fR can be called repeatedly with chunks of the message to
203be hashed (\fBlen\fR bytes at \fBdata\fR).
204.PP
205\&\fIMD2_Final()\fR places the message digest in \fBmd\fR, which must have space
206for \s-1MD2_DIGEST_LENGTH\s0 == 16 bytes of output, and erases the \fB\s-1MD2_CTX\s0\fR.
207.PP
208\&\fIMD4_Init()\fR, \fIMD4_Update()\fR, \fIMD4_Final()\fR, \fIMD5_Init()\fR, \fIMD5_Update()\fR, and
209\&\fIMD5_Final()\fR are analogous using an \fB\s-1MD4_CTX\s0\fR and \fB\s-1MD5_CTX\s0\fR structure.
210.PP
211Applications should use the higher level functions
212EVP_DigestInit(3)
213etc. instead of calling the hash functions directly.
214.SH "NOTE"
215.IX Header "NOTE"
216\&\s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 are recommended only for compatibility with existing
217applications. In new applications, \s-1SHA-1\s0 or \s-1RIPEMD-160\s0 should be
218preferred.
219.SH "RETURN VALUES"
220.IX Header "RETURN VALUES"
221\&\fIMD2()\fR, \fIMD4()\fR, and \fIMD5()\fR return pointers to the hash value.
222.PP
223\&\fIMD2_Init()\fR, \fIMD2_Update()\fR, \fIMD2_Final()\fR, \fIMD4_Init()\fR, \fIMD4_Update()\fR,
224\&\fIMD4_Final()\fR, \fIMD5_Init()\fR, \fIMD5_Update()\fR, and \fIMD5_Final()\fR do not return
225values.
226.SH "CONFORMING TO"
227.IX Header "CONFORMING TO"
228\&\s-1RFC\s0 1319, \s-1RFC\s0 1320, \s-1RFC\s0 1321
229.SH "SEE ALSO"
230.IX Header "SEE ALSO"
231sha(3), ripemd(3), EVP_DigestInit(3)
232.SH "HISTORY"
233.IX Header "HISTORY"
234\&\fIMD2()\fR, \fIMD2_Init()\fR, \fIMD2_Update()\fR \fIMD2_Final()\fR, \fIMD5()\fR, \fIMD5_Init()\fR,
235\&\fIMD5_Update()\fR and \fIMD5_Final()\fR are available in all versions of SSLeay
236and OpenSSL.
237.PP
238\&\fIMD4()\fR, \fIMD4_Init()\fR, and \fIMD4_Update()\fR are available in OpenSSL 0.9.6 and
239above.
| 142.UC
143.SH "NAME"
144\&\s-1MD2\s0, \s-1MD4\s0, \s-1MD5\s0, MD2_Init, MD2_Update, MD2_Final, MD4_Init, MD4_Update,
145MD4_Final, MD5_Init, MD5_Update, MD5_Final \- \s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 hash functions
146.SH "SYNOPSIS"
147.IX Header "SYNOPSIS"
148.Vb 1
149\& #include <openssl/md2.h>
150.Ve
151.Vb 2
152\& unsigned char *MD2(const unsigned char *d, unsigned long n,
153\& unsigned char *md);
154.Ve
155.Vb 4
156\& void MD2_Init(MD2_CTX *c);
157\& void MD2_Update(MD2_CTX *c, const unsigned char *data,
158\& unsigned long len);
159\& void MD2_Final(unsigned char *md, MD2_CTX *c);
160.Ve
161.Vb 1
162\& #include <openssl/md4.h>
163.Ve
164.Vb 2
165\& unsigned char *MD4(const unsigned char *d, unsigned long n,
166\& unsigned char *md);
167.Ve
168.Vb 4
169\& void MD4_Init(MD4_CTX *c);
170\& void MD4_Update(MD4_CTX *c, const void *data,
171\& unsigned long len);
172\& void MD4_Final(unsigned char *md, MD4_CTX *c);
173.Ve
174.Vb 1
175\& #include <openssl/md5.h>
176.Ve
177.Vb 2
178\& unsigned char *MD5(const unsigned char *d, unsigned long n,
179\& unsigned char *md);
180.Ve
181.Vb 4
182\& void MD5_Init(MD5_CTX *c);
183\& void MD5_Update(MD5_CTX *c, const void *data,
184\& unsigned long len);
185\& void MD5_Final(unsigned char *md, MD5_CTX *c);
186.Ve
187.SH "DESCRIPTION"
188.IX Header "DESCRIPTION"
189\&\s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 are cryptographic hash functions with a 128 bit output.
190.PP
191\&\fIMD2()\fR, \fIMD4()\fR, and \fIMD5()\fR compute the \s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 message digest
192of the \fBn\fR bytes at \fBd\fR and place it in \fBmd\fR (which must have space
193for \s-1MD2_DIGEST_LENGTH\s0 == \s-1MD4_DIGEST_LENGTH\s0 == \s-1MD5_DIGEST_LENGTH\s0 == 16
194bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest is placed in a static
195array.
196.PP
197The following functions may be used if the message is not completely
198stored in memory:
199.PP
200\&\fIMD2_Init()\fR initializes a \fB\s-1MD2_CTX\s0\fR structure.
201.PP
202\&\fIMD2_Update()\fR can be called repeatedly with chunks of the message to
203be hashed (\fBlen\fR bytes at \fBdata\fR).
204.PP
205\&\fIMD2_Final()\fR places the message digest in \fBmd\fR, which must have space
206for \s-1MD2_DIGEST_LENGTH\s0 == 16 bytes of output, and erases the \fB\s-1MD2_CTX\s0\fR.
207.PP
208\&\fIMD4_Init()\fR, \fIMD4_Update()\fR, \fIMD4_Final()\fR, \fIMD5_Init()\fR, \fIMD5_Update()\fR, and
209\&\fIMD5_Final()\fR are analogous using an \fB\s-1MD4_CTX\s0\fR and \fB\s-1MD5_CTX\s0\fR structure.
210.PP
211Applications should use the higher level functions
212EVP_DigestInit(3)
213etc. instead of calling the hash functions directly.
214.SH "NOTE"
215.IX Header "NOTE"
216\&\s-1MD2\s0, \s-1MD4\s0, and \s-1MD5\s0 are recommended only for compatibility with existing
217applications. In new applications, \s-1SHA-1\s0 or \s-1RIPEMD-160\s0 should be
218preferred.
219.SH "RETURN VALUES"
220.IX Header "RETURN VALUES"
221\&\fIMD2()\fR, \fIMD4()\fR, and \fIMD5()\fR return pointers to the hash value.
222.PP
223\&\fIMD2_Init()\fR, \fIMD2_Update()\fR, \fIMD2_Final()\fR, \fIMD4_Init()\fR, \fIMD4_Update()\fR,
224\&\fIMD4_Final()\fR, \fIMD5_Init()\fR, \fIMD5_Update()\fR, and \fIMD5_Final()\fR do not return
225values.
226.SH "CONFORMING TO"
227.IX Header "CONFORMING TO"
228\&\s-1RFC\s0 1319, \s-1RFC\s0 1320, \s-1RFC\s0 1321
229.SH "SEE ALSO"
230.IX Header "SEE ALSO"
231sha(3), ripemd(3), EVP_DigestInit(3)
232.SH "HISTORY"
233.IX Header "HISTORY"
234\&\fIMD2()\fR, \fIMD2_Init()\fR, \fIMD2_Update()\fR \fIMD2_Final()\fR, \fIMD5()\fR, \fIMD5_Init()\fR,
235\&\fIMD5_Update()\fR and \fIMD5_Final()\fR are available in all versions of SSLeay
236and OpenSSL.
237.PP
238\&\fIMD4()\fR, \fIMD4_Init()\fR, and \fIMD4_Update()\fR are available in OpenSSL 0.9.6 and
239above.
|