mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
e39e295e20
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> (Merged from https://github.com/openssl/openssl/pull/12463)
134 lines
5.1 KiB
Plaintext
134 lines
5.1 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
ASN1_INTEGER_get_uint64, ASN1_INTEGER_set_uint64,
|
|
ASN1_INTEGER_get_int64, ASN1_INTEGER_get, ASN1_INTEGER_set_int64, ASN1_INTEGER_set, BN_to_ASN1_INTEGER, ASN1_INTEGER_to_BN, ASN1_ENUMERATED_get_int64, ASN1_ENUMERATED_get, ASN1_ENUMERATED_set_int64, ASN1_ENUMERATED_set, BN_to_ASN1_ENUMERATED, ASN1_ENUMERATED_to_BN
|
|
- ASN.1 INTEGER and ENUMERATED utilities
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/asn1.h>
|
|
|
|
int ASN1_INTEGER_get_int64(int64_t *pr, const ASN1_INTEGER *a);
|
|
long ASN1_INTEGER_get(const ASN1_INTEGER *a);
|
|
|
|
int ASN1_INTEGER_set_int64(ASN1_INTEGER *a, int64_t r);
|
|
int ASN1_INTEGER_set(const ASN1_INTEGER *a, long v);
|
|
|
|
int ASN1_INTEGER_get_uint64(uint64_t *pr, const ASN1_INTEGER *a);
|
|
int ASN1_INTEGER_set_uint64(ASN1_INTEGER *a, uint64_t r);
|
|
|
|
ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai);
|
|
BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn);
|
|
|
|
int ASN1_ENUMERATED_get_int64(int64_t *pr, const ASN1_ENUMERATED *a);
|
|
long ASN1_ENUMERATED_get(const ASN1_ENUMERATED *a);
|
|
|
|
int ASN1_ENUMERATED_set_int64(ASN1_ENUMERATED *a, int64_t r);
|
|
int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v);
|
|
|
|
ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai);
|
|
BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
These functions convert to and from B<ASN1_INTEGER> and B<ASN1_ENUMERATED>
|
|
structures.
|
|
|
|
ASN1_INTEGER_get_int64() converts an B<ASN1_INTEGER> into an B<int64_t> type
|
|
If successful it returns 1 and sets I<*pr> to the value of I<a>. If it fails
|
|
(due to invalid type or the value being too big to fit into an B<int64_t> type)
|
|
it returns 0.
|
|
|
|
ASN1_INTEGER_get_uint64() is similar to ASN1_INTEGER_get_int64_t() except it
|
|
converts to a B<uint64_t> type and an error is returned if the passed integer
|
|
is negative.
|
|
|
|
ASN1_INTEGER_get() also returns the value of I<a> but it returns 0 if I<a> is
|
|
NULL and -1 on error (which is ambiguous because -1 is a legitimate value for
|
|
an B<ASN1_INTEGER>). New applications should use ASN1_INTEGER_get_int64()
|
|
instead.
|
|
|
|
ASN1_INTEGER_set_int64() sets the value of B<ASN1_INTEGER> I<a> to the
|
|
B<int64_t> value I<r>.
|
|
|
|
ASN1_INTEGER_set_uint64() sets the value of B<ASN1_INTEGER> I<a> to the
|
|
B<uint64_t> value I<r>.
|
|
|
|
ASN1_INTEGER_set() sets the value of B<ASN1_INTEGER> I<a> to the I<long> value
|
|
I<v>.
|
|
|
|
BN_to_ASN1_INTEGER() converts B<BIGNUM> I<bn> to an B<ASN1_INTEGER>. If I<ai>
|
|
is NULL a new B<ASN1_INTEGER> structure is returned. If I<ai> is not NULL then
|
|
the existing structure will be used instead.
|
|
|
|
ASN1_INTEGER_to_BN() converts ASN1_INTEGER I<ai> into a B<BIGNUM>. If I<bn> is
|
|
NULL a new B<BIGNUM> structure is returned. If I<bn> is not NULL then the
|
|
existing structure will be used instead.
|
|
|
|
ASN1_ENUMERATED_get_int64(), ASN1_ENUMERATED_set_int64(),
|
|
ASN1_ENUMERATED_set(), BN_to_ASN1_ENUMERATED() and ASN1_ENUMERATED_to_BN()
|
|
behave in an identical way to their ASN1_INTEGER counterparts except they
|
|
operate on an B<ASN1_ENUMERATED> value.
|
|
|
|
ASN1_ENUMERATED_get() returns the value of I<a> in a similar way to
|
|
ASN1_INTEGER_get() but it returns B<0xffffffffL> if the value of I<a> will not
|
|
fit in a long type. New applications should use ASN1_ENUMERATED_get_int64()
|
|
instead.
|
|
|
|
=head1 NOTES
|
|
|
|
In general an B<ASN1_INTEGER> or B<ASN1_ENUMERATED> type can contain an
|
|
integer of almost arbitrary size and so cannot always be represented by a C
|
|
B<int64_t> type. However, in many cases (for example version numbers) they
|
|
represent small integers which can be more easily manipulated if converted to
|
|
an appropriate C integer type.
|
|
|
|
=head1 BUGS
|
|
|
|
The ambiguous return values of ASN1_INTEGER_get() and ASN1_ENUMERATED_get()
|
|
mean these functions should be avoided if possible. They are retained for
|
|
compatibility. Normally the ambiguous return values are not legitimate
|
|
values for the fields they represent.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
ASN1_INTEGER_set_int64(), ASN1_INTEGER_set(), ASN1_ENUMERATED_set_int64() and
|
|
ASN1_ENUMERATED_set() return 1 for success and 0 for failure. They will only
|
|
fail if a memory allocation error occurs.
|
|
|
|
ASN1_INTEGER_get_int64() and ASN1_ENUMERATED_get_int64() return 1 for success
|
|
and 0 for failure. They will fail if the passed type is incorrect (this will
|
|
only happen if there is a programming error) or if the value exceeds the range
|
|
of an B<int64_t> type.
|
|
|
|
BN_to_ASN1_INTEGER() and BN_to_ASN1_ENUMERATED() return an B<ASN1_INTEGER> or
|
|
B<ASN1_ENUMERATED> structure respectively or NULL if an error occurs. They will
|
|
only fail due to a memory allocation error.
|
|
|
|
ASN1_INTEGER_to_BN() and ASN1_ENUMERATED_to_BN() return a B<BIGNUM> structure
|
|
of NULL if an error occurs. They can fail if the passed type is incorrect
|
|
(due to programming error) or due to a memory allocation failure.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ERR_get_error(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
ASN1_INTEGER_set_int64(), ASN1_INTEGER_get_int64(),
|
|
ASN1_ENUMERATED_set_int64() and ASN1_ENUMERATED_get_int64()
|
|
were added in OpenSSL 1.1.0.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|