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.
197 lines
5.4 KiB
Groff
197 lines
5.4 KiB
Groff
.\" $NetBSD: BN_new.3,v 1.12 2003/07/24 14:16:37 itojun Exp $
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.\" ======================================================================
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.\"
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.IX Title "BN_new 3"
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.TH BN_new 3 "0.9.7b" "2002-09-25" "OpenSSL"
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.UC
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.SH "NAME"
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BN_new, BN_init, BN_clear, BN_free, BN_clear_free \- allocate and free BIGNUMs
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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/bn.h>
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.Ve
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.Vb 1
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\& BIGNUM *BN_new(void);
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.Ve
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.Vb 1
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\& void BN_init(BIGNUM *);
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.Ve
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.Vb 1
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\& void BN_clear(BIGNUM *a);
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.Ve
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.Vb 1
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\& void BN_free(BIGNUM *a);
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.Ve
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.Vb 1
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\& void BN_clear_free(BIGNUM *a);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIBN_new()\fR allocated and initializes a \fB\s-1BIGNUM\s0\fR structure. \fIBN_init()\fR
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initializes an existing uninitialized \fB\s-1BIGNUM\s0\fR.
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.PP
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\&\fIBN_clear()\fR is used to destroy sensitive data such as keys when they
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are no longer needed. It erases the memory used by \fBa\fR and sets it
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to the value 0.
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.PP
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\&\fIBN_free()\fR frees the components of the \fB\s-1BIGNUM\s0\fR, and if it was created
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by \fIBN_new()\fR, also the structure itself. \fIBN_clear_free()\fR additionally
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overwrites the data before the memory is returned to the system.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIBN_new()\fR returns a pointer to the \fB\s-1BIGNUM\s0\fR. If the allocation fails,
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it returns \fB\s-1NULL\s0\fR and sets an error code that can be obtained
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by ERR_get_error(3).
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.PP
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\&\fIBN_init()\fR, \fIBN_clear()\fR, \fIBN_free()\fR and \fIBN_clear_free()\fR have no return
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values.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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openssl_bn(3), ERR_get_error(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\fIBN_new()\fR, \fIBN_clear()\fR, \fIBN_free()\fR and \fIBN_clear_free()\fR are available in
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all versions on SSLeay and OpenSSL. \fIBN_init()\fR was added in SSLeay
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0.9.1b.
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