1.\" Automatically generated by Pod::Man 4.07 (Pod::Simple 3.35) 2.\" 3.\" Standard preamble: 4.\" ======================================================================== 5.de Sp \" Vertical space (when we can't use .PP) 6.if t .sp .5v 7.if n .sp 8.. 9.de Vb \" Begin verbatim text 10.ft CW 11.nf 12.ne \\$1 13.. 14.de Ve \" End verbatim text 15.ft R 16.fi 17.. 18.\" Set up some character translations and predefined strings. \*(-- will 19.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left 20.\" double quote, and \*(R" will give a right double quote. \*(C+ will 21.\" give a nicer C++. Capital omega is used to do unbreakable dashes and 22.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, 23.\" nothing in troff, for use with C<>. 24.tr \(*W- 25.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' 26.ie n \{\ 27. ds -- \(*W- 28. ds PI pi 29. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch 30. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch 31. ds L" "" 32. ds R" "" 33. ds C` "" 34. ds C' "" 35'br\} 36.el\{\ 37. ds -- \|\(em\| 38. ds PI \(*p 39. ds L" `` 40. ds R" '' 41. ds C` 42. ds C' 43'br\} 44.\" 45.\" Escape single quotes in literal strings from groff's Unicode transform. 46.ie \n(.g .ds Aq \(aq 47.el .ds Aq ' 48.\" 49.\" If the F register is >0, we'll generate index entries on stderr for 50.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index 51.\" entries marked with X<> in POD. Of course, you'll have to process the 52.\" output yourself in some meaningful fashion. 53.\" 54.\" Avoid warning from groff about undefined register 'F'. 55.de IX 56.. 57.if !\nF .nr F 0 58.if \nF>0 \{\ 59. de IX 60. tm Index:\\$1\t\\n%\t"\\$2" 61.. 62. if !\nF==2 \{\ 63. nr % 0 64. nr F 2 65. \} 66.\} 67.\" 68.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). 69.\" Fear. Run. Save yourself. No user-serviceable parts. 70. \" fudge factors for nroff and troff 71.if n \{\ 72. ds #H 0 73. ds #V .8m 74. ds #F .3m 75. ds #[ \f1 76. ds #] \fP 77.\} 78.if t \{\ 79. ds #H ((1u-(\\\\n(.fu%2u))*.13m) 80. ds #V .6m 81. ds #F 0 82. ds #[ \& 83. ds #] \& 84.\} 85. \" simple accents for nroff and troff 86.if n \{\ 87. ds ' \& 88. ds ` \& 89. ds ^ \& 90. ds , \& 91. ds ~ ~ 92. ds / 93.\} 94.if t \{\ 95. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" 96. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' 97. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' 98. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' 99. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' 100. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' 101.\} 102. \" troff and (daisy-wheel) nroff accents 103.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' 104.ds 8 \h'\*(#H'\(*b\h'-\*(#H' 105.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] 106.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' 107.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' 108.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] 109.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] 110.ds ae a\h'-(\w'a'u*4/10)'e 111.ds Ae A\h'-(\w'A'u*4/10)'E 112. \" corrections for vroff 113.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' 114.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' 115. \" for low resolution devices (crt and lpr) 116.if \n(.H>23 .if \n(.V>19 \ 117\{\ 118. ds : e 119. ds 8 ss 120. ds o a 121. ds d- d\h'-1'\(ga 122. ds D- D\h'-1'\(hy 123. ds th \o'bp' 124. ds Th \o'LP' 125. ds ae ae 126. ds Ae AE 127.\} 128.rm #[ #] #H #V #F C 129.\" ======================================================================== 130.\" 131.IX Title "RAND_load_file 3"
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132.TH RAND_load_file 3 "2017-11-02" "1.0.2m" "OpenSSL"
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132.TH RAND_load_file 3 "2017-12-07" "1.0.2n" "OpenSSL" |
133.\" For nroff, turn off justification. Always turn off hyphenation; it makes 134.\" way too many mistakes in technical documents. 135.if n .ad l 136.nh 137.SH "NAME" 138RAND_load_file, RAND_write_file, RAND_file_name \- PRNG seed file 139.SH "SYNOPSIS" 140.IX Header "SYNOPSIS" 141.Vb 1 142\& #include <openssl/rand.h> 143\& 144\& const char *RAND_file_name(char *buf, size_t num); 145\& 146\& int RAND_load_file(const char *filename, long max_bytes); 147\& 148\& int RAND_write_file(const char *filename); 149.Ve 150.SH "DESCRIPTION" 151.IX Header "DESCRIPTION" 152\&\fIRAND_file_name()\fR generates a default path for the random seed 153file. \fBbuf\fR points to a buffer of size \fBnum\fR in which to store the 154filename. The seed file is \f(CW$RANDFILE\fR if that environment variable is 155set, \f(CW$HOME\fR/.rnd otherwise. If \f(CW$HOME\fR is not set either, or \fBnum\fR is 156too small for the path name, an error occurs. 157.PP 158\&\fIRAND_load_file()\fR reads a number of bytes from file \fBfilename\fR and 159adds them to the \s-1PRNG.\s0 If \fBmax_bytes\fR is non-negative, 160up to to \fBmax_bytes\fR are read; starting with OpenSSL 0.9.5, 161if \fBmax_bytes\fR is \-1, the complete file is read. 162.PP 163\&\fIRAND_write_file()\fR writes a number of random bytes (currently 1024) to 164file \fBfilename\fR which can be used to initialize the \s-1PRNG\s0 by calling 165\&\fIRAND_load_file()\fR in a later session. 166.SH "RETURN VALUES" 167.IX Header "RETURN VALUES" 168\&\fIRAND_load_file()\fR returns the number of bytes read. 169.PP 170\&\fIRAND_write_file()\fR returns the number of bytes written, and \-1 if the 171bytes written were generated without appropriate seed. 172.PP 173\&\fIRAND_file_name()\fR returns a pointer to \fBbuf\fR on success, and \s-1NULL\s0 on 174error. 175.SH "SEE ALSO" 176.IX Header "SEE ALSO" 177\&\fIrand\fR\|(3), \fIRAND_add\fR\|(3), \fIRAND_cleanup\fR\|(3) 178.SH "HISTORY" 179.IX Header "HISTORY" 180\&\fIRAND_load_file()\fR, \fIRAND_write_file()\fR and \fIRAND_file_name()\fR are available in 181all versions of SSLeay and OpenSSL.
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