f4401cd869
alter des.h to be friendly with openssl/des.h (you can include both in the same file) make libkrb to depend on libdes. bump major. massage various portioin of heimdal to be friendly with openssl 0.9.7b.
195 lines
5.6 KiB
Groff
195 lines
5.6 KiB
Groff
.\" $NetBSD: RAND_load_file.3,v 1.12 2003/07/24 14:16:42 itojun Exp $
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.\" Thu Jul 24 13:07:59 2003
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.\" ======================================================================
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.\"
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.IX Title "RAND_load_file 3"
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.TH RAND_load_file 3 "0.9.7b" "2001-03-22" "OpenSSL"
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.UC
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.SH "NAME"
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RAND_load_file, RAND_write_file, RAND_file_name \- \s-1PRNG\s0 seed file
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.SH "LIBRARY"
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libcrypto, -lcrypto
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/rand.h>
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.Ve
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.Vb 1
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\& const char *RAND_file_name(char *buf, size_t num);
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.Ve
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.Vb 1
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\& int RAND_load_file(const char *filename, long max_bytes);
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.Ve
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.Vb 1
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\& int RAND_write_file(const char *filename);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIRAND_file_name()\fR generates a default path for the random seed
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file. \fBbuf\fR points to a buffer of size \fBnum\fR in which to store the
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filename. The seed file is \f(CW$RANDFILE\fR if that environment variable is
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set, \f(CW$HOME\fR/.rnd otherwise. If \f(CW$HOME\fR is not set either, or \fBnum\fR is
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too small for the path name, an error occurs.
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.PP
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\&\fIRAND_load_file()\fR reads a number of bytes from file \fBfilename\fR and
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adds them to the \s-1PRNG\s0. If \fBmax_bytes\fR is non-negative,
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up to to \fBmax_bytes\fR are read; starting with OpenSSL 0.9.5,
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if \fBmax_bytes\fR is \-1, the complete file is read.
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.PP
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\&\fIRAND_write_file()\fR writes a number of random bytes (currently 1024) to
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file \fBfilename\fR which can be used to initialize the \s-1PRNG\s0 by calling
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\&\fIRAND_load_file()\fR in a later session.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIRAND_load_file()\fR returns the number of bytes read.
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.PP
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\&\fIRAND_write_file()\fR returns the number of bytes written, and \-1 if the
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bytes written were generated without appropriate seed.
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.PP
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\&\fIRAND_file_name()\fR returns a pointer to \fBbuf\fR on success, and \s-1NULL\s0 on
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error.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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openssl_rand(3), RAND_add(3), RAND_cleanup(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\fIRAND_load_file()\fR, \fIRAND_write_file()\fR and \fIRAND_file_name()\fR are available in
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all versions of SSLeay and OpenSSL.
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