181 lines
5.6 KiB
Groff
Executable File
181 lines
5.6 KiB
Groff
Executable File
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.\" ========================================================================
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.\"
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.IX Title "DSA_SIG_NEW 3"
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.TH DSA_SIG_NEW 3 "2020-03-02" "1.1.1e-dev" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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DSA_SIG_get0, DSA_SIG_set0, DSA_SIG_new, DSA_SIG_free \- allocate and free DSA signature objects
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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/dsa.h>
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\&
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\& DSA_SIG *DSA_SIG_new(void);
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\& void DSA_SIG_free(DSA_SIG *a);
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\& void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
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\& int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIDSA_SIG_new()\fR allocates an empty \fB\s-1DSA_SIG\s0\fR structure.
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.PP
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\&\fIDSA_SIG_free()\fR frees the \fB\s-1DSA_SIG\s0\fR structure and its components. The
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values are erased before the memory is returned to the system.
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.PP
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\&\fIDSA_SIG_get0()\fR returns internal pointers to the \fBr\fR and \fBs\fR values contained
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in \fBsig\fR.
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.PP
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The \fBr\fR and \fBs\fR values can be set by calling \fIDSA_SIG_set0()\fR and passing the
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new values for \fBr\fR and \fBs\fR as parameters to the function. Calling this
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function transfers the memory management of the values to the \s-1DSA_SIG\s0 object,
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and therefore the values that have been passed in should not be freed directly
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after this function has been called.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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If the allocation fails, \fIDSA_SIG_new()\fR returns \fB\s-1NULL\s0\fR and sets an
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error code that can be obtained by
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\&\fIERR_get_error\fR\|(3). Otherwise it returns a pointer
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to the newly allocated structure.
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.PP
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\&\fIDSA_SIG_free()\fR returns no value.
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.PP
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\&\fIDSA_SIG_set0()\fR returns 1 on success or 0 on failure.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIDSA_new\fR\|(3), \fIERR_get_error\fR\|(3),
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\&\fIDSA_do_sign\fR\|(3)
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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