/src/botan/src/lib/asn1/alg_id.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Algorithm Identifier |
3 | | * (C) 1999-2007 Jack Lloyd |
4 | | * |
5 | | * Botan is released under the Simplified BSD License (see license.txt) |
6 | | */ |
7 | | |
8 | | #include <botan/asn1_obj.h> |
9 | | #include <botan/der_enc.h> |
10 | | #include <botan/ber_dec.h> |
11 | | #include <botan/oids.h> |
12 | | |
13 | | namespace Botan { |
14 | | |
15 | | /* |
16 | | * Create an AlgorithmIdentifier |
17 | | */ |
18 | | AlgorithmIdentifier::AlgorithmIdentifier(const OID& oid, |
19 | | const std::vector<uint8_t>& param) : |
20 | | m_oid(oid), |
21 | | m_parameters(param) |
22 | 0 | {} |
23 | | |
24 | | /* |
25 | | * Create an AlgorithmIdentifier |
26 | | */ |
27 | | AlgorithmIdentifier::AlgorithmIdentifier(const std::string& oid, |
28 | | const std::vector<uint8_t>& param) : |
29 | | AlgorithmIdentifier(OID::from_string(oid), param) |
30 | 0 | {} |
31 | | |
32 | | /* |
33 | | * Create an AlgorithmIdentifier |
34 | | */ |
35 | | AlgorithmIdentifier::AlgorithmIdentifier(const OID& oid, |
36 | | Encoding_Option option) : |
37 | | m_oid(oid), |
38 | | m_parameters() |
39 | 0 | { |
40 | 0 | const uint8_t DER_NULL[] = { 0x05, 0x00 }; |
41 | |
|
42 | 0 | if(option == USE_NULL_PARAM) |
43 | 0 | m_parameters.assign(DER_NULL, DER_NULL + 2); |
44 | 0 | } |
45 | | |
46 | | /* |
47 | | * Create an AlgorithmIdentifier |
48 | | */ |
49 | | AlgorithmIdentifier::AlgorithmIdentifier(const std::string& oid, |
50 | | Encoding_Option option) : |
51 | | m_oid(OID::from_string(oid)), |
52 | | m_parameters() |
53 | 0 | { |
54 | 0 | const uint8_t DER_NULL[] = { 0x05, 0x00 }; |
55 | |
|
56 | 0 | if(option == USE_NULL_PARAM) |
57 | 0 | m_parameters.assign(DER_NULL, DER_NULL + 2); |
58 | 0 | } |
59 | | |
60 | | bool AlgorithmIdentifier::parameters_are_null() const |
61 | 0 | { |
62 | 0 | return (m_parameters.size() == 2 && (m_parameters[0] == 0x05) && (m_parameters[1] == 0x00)); |
63 | 0 | } |
64 | | |
65 | | bool operator==(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2) |
66 | 0 | { |
67 | 0 | if(a1.get_oid() != a2.get_oid()) |
68 | 0 | return false; |
69 | | |
70 | | /* |
71 | | * Treat NULL and empty as equivalent |
72 | | */ |
73 | 0 | if(a1.parameters_are_null_or_empty() && |
74 | 0 | a2.parameters_are_null_or_empty()) |
75 | 0 | { |
76 | 0 | return true; |
77 | 0 | } |
78 | | |
79 | 0 | return (a1.parameters() == a2.parameters()); |
80 | 0 | } |
81 | | |
82 | | bool operator!=(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2) |
83 | 0 | { |
84 | 0 | return !(a1 == a2); |
85 | 0 | } |
86 | | |
87 | | /* |
88 | | * DER encode an AlgorithmIdentifier |
89 | | */ |
90 | | void AlgorithmIdentifier::encode_into(DER_Encoder& codec) const |
91 | 0 | { |
92 | 0 | codec.start_sequence() |
93 | 0 | .encode(oid()) |
94 | 0 | .raw_bytes(parameters()) |
95 | 0 | .end_cons(); |
96 | 0 | } |
97 | | |
98 | | /* |
99 | | * Decode a BER encoded AlgorithmIdentifier |
100 | | */ |
101 | | void AlgorithmIdentifier::decode_from(BER_Decoder& codec) |
102 | 0 | { |
103 | 0 | codec.start_sequence() |
104 | 0 | .decode(m_oid) |
105 | 0 | .raw_bytes(m_parameters) |
106 | 0 | .end_cons(); |
107 | 0 | } |
108 | | |
109 | | } |