5 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
9 #include <openssl/asn1.h>
11 int ASN1_INTEGER_get_int64(int64_t *pr, const ASN1_INTEGER *a);
12 int ASN1_INTEGER_get(ASN1_INTEGER *a, long v);
14 int ASN1_INTEGER_set_int64(ASN1_INTEGER *a, int64_t r);
15 long ASN1_INTEGER_set(const ASN1_INTEGER *a);
17 ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai);
18 BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn);
20 int ASN1_ENUMERATED_get_int64(int64_t *pr, const ASN1_INTEGER *a);
21 long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a);
23 int ASN1_ENUMERATED_set_int64(ASN1_INTEGER *a, int64_t r);
24 int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v);
26 ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai);
27 BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn);
31 These functions convert to and from B<ASN1_INTEGER> and B<ASN1_ENUMERATED>
34 ASN1_INTEGER_get_int64() converts an B<ASN1_INTEGER> into an B<int64_t> type
35 If successful it returns 1 and sets B<*pr> to the value of B<a>. If it fails
36 (due to invalid type or the value being too big to fit into an B<int64_t> type)
39 ASN1_INTEGER_get() also returns the value of B<a> but it returns 0 if B<a> is
40 NULL and -1 on error (which is ambiguous because -1 is a legitimate value for
41 an B<ASN1_INTEGER>). New applications should use ASN1_INTEGER_get_int64()
44 ASN1_INTEGER_set_int64() sets the value of B<ASN1_INTEGER> B<a> to the
45 B<int64_t> value B<r>.
47 ASN1_INTEGER_set() sets the value of B<ASN1_INTEGER> B<a> to the B<long> value
50 BN_to_ASN1_INTEGER() converts B<BIGNUM> B<bn> to an B<ASN1_INTEGER>. If B<ai>
51 is NULL a new B<ASN1_INTEGER> structure is returned. If B<ai> is not NULL then
52 the existing structure will be used instead.
54 ASN1_INTEGER_to_BN() converts ASN1_INTEGER B<ai> into a B<BIGNUM>. If B<bn> is
55 NULL a new B<BIGNUM> structure is returned. If B<bn> is not NULL then the
56 existing structure will be used instead.
58 ASN1_ENUMERATED_get_int64(), ASN1_ENUMERATED_set_int64(),
59 ASN1_ENUMERATED_set(), BN_to_ASN1_ENUMERATED() and ASN1_ENUMERATED_to_BN()
60 behave in an identical way to their ASN1_INTEGER counterparts except they
61 operate on an B<ASN1_ENUMERATED> value.
63 ASN1_ENUMERATED_get() returns the value of B<a> in a similar way to
64 ASN1_INTEGER_get() but it returns B<0xffffffffL> if the value of B<a> will not
65 fit in a long type. New applications should use ASN1_ENUMERATED_get_int64()
70 In general an B<ASN1_INTEGER> or B<ASN1_ENUMERATED> type can contain an
71 integer of almost arbitrary size and so cannot always be represented by a C
72 B<int64_t> type. However in many cases (for example version numbers) they
73 represent small integers which can be more easily manipulated if converted to
74 an appropriate C integer type.
78 The ambigious return values of ASN1_INTEGER_get() and ASN1_ENUMERATED_get()
79 mean these functions should be avoided if possible. They are retained for
80 compatibility. Normally the ambigious return values are not legitimate
81 values for the fields they represent.
85 ASN1_INTEGER_set_int64(), ASN1_INTEGER_set(), ASN1_ENUMERATED_set_int64() and
86 ASN1_ENUMERATED_set() return 1 for success and 0 for failure. They will only
87 fail if a memory allocation error occurs.
89 ASN1_INTEGER_get_int64() and ASN1_ENUMERATED_get_int64() return 1 for success
90 and 0 for failure. They will fail if the passed type is incorrect (this will
91 only happen if there is a programming error) or if the value exceeds the range
92 of an B<int64_t> type.
94 BN_to_ASN1_INTEGER() and BN_to_ASN1_ENUMERATED() return an B<ASN1_INTEGER> or
95 B<ASN1_ENUMERATED> structure respectively or NULL if an error occurs. They will
96 only fail due to a memory allocation error.
98 ASN1_INTEGER_to_BN() and ASN1_ENUMERATED_to_BN() return a B<BIGNUM> structure
99 of NULL if an error occurs. They can fail if the pased type is incorrect
100 (due to programming error) or due to a memory allocation failure.
104 L<ERR_get_error(3)|ERR_get_error(3)>
108 ASN1_INTEGER_set_int64(), ASN1_INTEGER_get_int64(),
109 ASN1_ENUMERATED_set_int64() and ASN1_ENUMERATED_get_int64()
110 were added to OpenSSL 1.1.0.