1ASN1_INTEGER_GET_INT64(3) OpenSSL ASN1_INTEGER_GET_INT64(3)
2
6 ASN1_INTEGER_get_uint64, ASN1_INTEGER_set_uint64,
7 ASN1_INTEGER_get_int64, ASN1_INTEGER_get, ASN1_INTEGER_set_int64,
8 ASN1_INTEGER_set, BN_to_ASN1_INTEGER, ASN1_INTEGER_to_BN,
9 ASN1_ENUMERATED_get_int64, ASN1_ENUMERATED_get,
10 ASN1_ENUMERATED_set_int64, ASN1_ENUMERATED_set, BN_to_ASN1_ENUMERATED,
11 ASN1_ENUMERATED_to_BN - ASN.1 INTEGER and ENUMERATED utilities
12
14 #include <openssl/asn1.h>
15 int ASN1_INTEGER_get_int64(int64_t *pr, const ASN1_INTEGER *a);
17 long ASN1_INTEGER_get(const ASN1_INTEGER *a);
18 int ASN1_INTEGER_set_int64(ASN1_INTEGER *a, int64_t r);
20 int ASN1_INTEGER_set(const ASN1_INTEGER *a, long v);
21 int ASN1_INTEGER_get_uint64(uint64_t *pr, const ASN1_INTEGER *a);
23 int ASN1_INTEGER_set_uint64(ASN1_INTEGER *a, uint64_t r);
24 ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai);
26 BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn);
27 int ASN1_ENUMERATED_get_int64(int64_t *pr, const ASN1_ENUMERATED *a);
29 long ASN1_ENUMERATED_get(const ASN1_ENUMERATED *a);
30 int ASN1_ENUMERATED_set_int64(ASN1_ENUMERATED *a, int64_t r);
32 int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v);
33 ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai);
35 BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn);
36
38 These functions convert to and from ASN1_INTEGER and ASN1_ENUMERATED
39 structures.
40 ASN1_INTEGER_get_int64() converts an ASN1_INTEGER into an int64_t type
42 If successful it returns 1 and sets *pr to the value of a. If it fails
43 (due to invalid type or the value being too big to fit into an int64_t
44 type) it returns 0.
45 ASN1_INTEGER_get_uint64() is similar to ASN1_INTEGER_get_int64_t()
47 except it converts to a uint64_t type and an error is returned if the
48 passed integer is negative.
49 ASN1_INTEGER_get() also returns the value of a but it returns 0 if a is
51 NULL and -1 on error (which is ambiguous because -1 is a legitimate
52 value for an ASN1_INTEGER). New applications should use
53 ASN1_INTEGER_get_int64() instead.
54 ASN1_INTEGER_set_int64() sets the value of ASN1_INTEGER a to the
56 int64_t value r.
57 ASN1_INTEGER_set_uint64() sets the value of ASN1_INTEGER a to the
59 uint64_t value r.
60 ASN1_INTEGER_set() sets the value of ASN1_INTEGER a to the long value
62 v.
63 BN_to_ASN1_INTEGER() converts BIGNUM bn to an ASN1_INTEGER. If ai is
65 NULL a new ASN1_INTEGER structure is returned. If ai is not NULL then
66 the existing structure will be used instead.
67 ASN1_INTEGER_to_BN() converts ASN1_INTEGER ai into a BIGNUM. If bn is
69 NULL a new BIGNUM structure is returned. If bn is not NULL then the
70 existing structure will be used instead.
71 ASN1_ENUMERATED_get_int64(), ASN1_ENUMERATED_set_int64(),
73 ASN1_ENUMERATED_set(), BN_to_ASN1_ENUMERATED() and
74 ASN1_ENUMERATED_to_BN() behave in an identical way to their
75 ASN1_INTEGER counterparts except they operate on an ASN1_ENUMERATED
76 value.
77 ASN1_ENUMERATED_get() returns the value of a in a similar way to
79 ASN1_INTEGER_get() but it returns 0xffffffffL if the value of a will
80 not fit in a long type. New applications should use
81 ASN1_ENUMERATED_get_int64() instead.
82
84 In general an ASN1_INTEGER or ASN1_ENUMERATED type can contain an
85 integer of almost arbitrary size and so cannot always be represented by
86 a C int64_t type. However, in many cases (for example version numbers)
87 they represent small integers which can be more easily manipulated if
88 converted to an appropriate C integer type.
89
91 The ambiguous return values of ASN1_INTEGER_get() and
92 ASN1_ENUMERATED_get() mean these functions should be avoided if
93 possible. They are retained for compatibility. Normally the ambiguous
94 return values are not legitimate values for the fields they represent.
95
97 ASN1_INTEGER_set_int64(), ASN1_INTEGER_set(),
98 ASN1_ENUMERATED_set_int64() and ASN1_ENUMERATED_set() return 1 for
99 success and 0 for failure. They will only fail if a memory allocation
100 error occurs.
101 ASN1_INTEGER_get_int64() and ASN1_ENUMERATED_get_int64() return 1 for
103 success and 0 for failure. They will fail if the passed type is
104 incorrect (this will only happen if there is a programming error) or if
105 the value exceeds the range of an int64_t type.
106 BN_to_ASN1_INTEGER() and BN_to_ASN1_ENUMERATED() return an ASN1_INTEGER
108 or ASN1_ENUMERATED structure respectively or NULL if an error occurs.
109 They will only fail due to a memory allocation error.
110 ASN1_INTEGER_to_BN() and ASN1_ENUMERATED_to_BN() return a BIGNUM
112 structure of NULL if an error occurs. They can fail if the passed type
113 is incorrect (due to programming error) or due to a memory allocation
114 failure.
115
117 ERR_get_error(3)
118
120 ASN1_INTEGER_set_int64(), ASN1_INTEGER_get_int64(),
121 ASN1_ENUMERATED_set_int64() and ASN1_ENUMERATED_get_int64() were added
122 in OpenSSL 1.1.0.
123
125 Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
126 Licensed under the OpenSSL license (the "License"). You may not use
128 this file except in compliance with the License. You can obtain a copy
129 in the file LICENSE in the source distribution or at
130 <https://www.openssl.org/source/license.html>.
1311.1.1q 2022-07-21 ASN1_INTEGER_GET_INT64(3)