Merge from vendor branch OPENSSL:
[dragonfly.git] / secure / lib / libcrypto / man / BN_new.3
CommitLineData
2eaa1526 1.\" Automatically generated by Pod::Man 2.12 (Pod::Simple 3.05)
8b0cefbb
JR
2.\"
3.\" Standard preamble:
4.\" ========================================================================
5.de Sh \" Subsection heading
984263bc
MD
6.br
7.if t .Sp
8.ne 5
9.PP
10\fB\\$1\fR
11.PP
12..
8b0cefbb 13.de Sp \" Vertical space (when we can't use .PP)
984263bc
MD
14.if t .sp .5v
15.if n .sp
16..
8b0cefbb 17.de Vb \" Begin verbatim text
984263bc
MD
18.ft CW
19.nf
20.ne \\$1
21..
8b0cefbb 22.de Ve \" End verbatim text
984263bc 23.ft R
984263bc
MD
24.fi
25..
8b0cefbb
JR
26.\" Set up some character translations and predefined strings. \*(-- will
27.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
2eaa1526
PA
28.\" double quote, and \*(R" will give a right double quote. \*(C+ will
29.\" give a nicer C++. Capital omega is used to do unbreakable dashes and
30.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
31.\" nothing in troff, for use with C<>.
32.tr \(*W-
8b0cefbb 33.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
984263bc 34.ie n \{\
8b0cefbb
JR
35. ds -- \(*W-
36. ds PI pi
37. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
38. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
39. ds L" ""
40. ds R" ""
41. ds C` ""
42. ds C' ""
984263bc
MD
43'br\}
44.el\{\
8b0cefbb
JR
45. ds -- \|\(em\|
46. ds PI \(*p
47. ds L" ``
48. ds R" ''
984263bc 49'br\}
8b0cefbb
JR
50.\"
51.\" If the F register is turned on, we'll generate index entries on stderr for
52.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
53.\" entries marked with X<> in POD. Of course, you'll have to process the
54.\" output yourself in some meaningful fashion.
55.if \nF \{\
56. de IX
57. tm Index:\\$1\t\\n%\t"\\$2"
984263bc 58..
8b0cefbb
JR
59. nr % 0
60. rr F
984263bc 61.\}
8b0cefbb 62.\"
8b0cefbb
JR
63.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
64.\" Fear. Run. Save yourself. No user-serviceable parts.
65. \" fudge factors for nroff and troff
984263bc 66.if n \{\
8b0cefbb
JR
67. ds #H 0
68. ds #V .8m
69. ds #F .3m
70. ds #[ \f1
71. ds #] \fP
984263bc
MD
72.\}
73.if t \{\
8b0cefbb
JR
74. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
75. ds #V .6m
76. ds #F 0
77. ds #[ \&
78. ds #] \&
984263bc 79.\}
8b0cefbb 80. \" simple accents for nroff and troff
984263bc 81.if n \{\
8b0cefbb
JR
82. ds ' \&
83. ds ` \&
84. ds ^ \&
85. ds , \&
86. ds ~ ~
87. ds /
984263bc
MD
88.\}
89.if t \{\
8b0cefbb
JR
90. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
91. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
92. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
93. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
94. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
95. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
984263bc 96.\}
8b0cefbb 97. \" troff and (daisy-wheel) nroff accents
984263bc
MD
98.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
99.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
100.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
101.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
102.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
103.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
104.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
105.ds ae a\h'-(\w'a'u*4/10)'e
106.ds Ae A\h'-(\w'A'u*4/10)'E
8b0cefbb 107. \" corrections for vroff
984263bc
MD
108.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
109.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
8b0cefbb 110. \" for low resolution devices (crt and lpr)
984263bc
MD
111.if \n(.H>23 .if \n(.V>19 \
112\{\
8b0cefbb
JR
113. ds : e
114. ds 8 ss
115. ds o a
116. ds d- d\h'-1'\(ga
117. ds D- D\h'-1'\(hy
118. ds th \o'bp'
119. ds Th \o'LP'
120. ds ae ae
121. ds Ae AE
984263bc
MD
122.\}
123.rm #[ #] #H #V #F C
8b0cefbb
JR
124.\" ========================================================================
125.\"
126.IX Title "BN_new 3"
2eaa1526
PA
127.TH BN_new 3 "2007-10-24" "0.9.8g" "OpenSSL"
128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
130.if n .ad l
131.nh
984263bc
MD
132.SH "NAME"
133BN_new, BN_init, BN_clear, BN_free, BN_clear_free \- allocate and free BIGNUMs
134.SH "SYNOPSIS"
8b0cefbb 135.IX Header "SYNOPSIS"
984263bc
MD
136.Vb 1
137\& #include <openssl/bn.h>
2eaa1526 138\&
984263bc 139\& BIGNUM *BN_new(void);
2eaa1526 140\&
984263bc 141\& void BN_init(BIGNUM *);
2eaa1526 142\&
984263bc 143\& void BN_clear(BIGNUM *a);
2eaa1526 144\&
984263bc 145\& void BN_free(BIGNUM *a);
2eaa1526 146\&
984263bc
MD
147\& void BN_clear_free(BIGNUM *a);
148.Ve
149.SH "DESCRIPTION"
8b0cefbb 150.IX Header "DESCRIPTION"
a561f9ff 151\&\fIBN_new()\fR allocates and initializes a \fB\s-1BIGNUM\s0\fR structure. \fIBN_init()\fR
8b0cefbb 152initializes an existing uninitialized \fB\s-1BIGNUM\s0\fR.
984263bc 153.PP
8b0cefbb 154\&\fIBN_clear()\fR is used to destroy sensitive data such as keys when they
984263bc
MD
155are no longer needed. It erases the memory used by \fBa\fR and sets it
156to the value 0.
157.PP
8b0cefbb 158\&\fIBN_free()\fR frees the components of the \fB\s-1BIGNUM\s0\fR, and if it was created
984263bc
MD
159by \fIBN_new()\fR, also the structure itself. \fIBN_clear_free()\fR additionally
160overwrites the data before the memory is returned to the system.
161.SH "RETURN VALUES"
8b0cefbb
JR
162.IX Header "RETURN VALUES"
163\&\fIBN_new()\fR returns a pointer to the \fB\s-1BIGNUM\s0\fR. If the allocation fails,
164it returns \fB\s-1NULL\s0\fR and sets an error code that can be obtained
165by \fIERR_get_error\fR\|(3).
984263bc 166.PP
8b0cefbb 167\&\fIBN_init()\fR, \fIBN_clear()\fR, \fIBN_free()\fR and \fIBN_clear_free()\fR have no return
984263bc
MD
168values.
169.SH "SEE ALSO"
8b0cefbb
JR
170.IX Header "SEE ALSO"
171\&\fIbn\fR\|(3), \fIERR_get_error\fR\|(3)
984263bc 172.SH "HISTORY"
8b0cefbb
JR
173.IX Header "HISTORY"
174\&\fIBN_new()\fR, \fIBN_clear()\fR, \fIBN_free()\fR and \fIBN_clear_free()\fR are available in
984263bc
MD
175all versions on SSLeay and OpenSSL. \fIBN_init()\fR was added in SSLeay
1760.9.1b.