/src/botan/src/lib/pubkey/dl_algo/dl_algo.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * DL Scheme |
3 | | * (C) 1999-2007 Jack Lloyd |
4 | | * |
5 | | * Botan is released under the Simplified BSD License (see license.txt) |
6 | | */ |
7 | | |
8 | | #include <botan/dl_algo.h> |
9 | | #include <botan/numthry.h> |
10 | | #include <botan/der_enc.h> |
11 | | #include <botan/ber_dec.h> |
12 | | |
13 | | namespace Botan { |
14 | | |
15 | | size_t DL_Scheme_PublicKey::key_length() const |
16 | 0 | { |
17 | 0 | return m_group.p_bits(); |
18 | 0 | } |
19 | | |
20 | | size_t DL_Scheme_PublicKey::estimated_strength() const |
21 | 0 | { |
22 | 0 | return m_group.estimated_strength(); |
23 | 0 | } |
24 | | |
25 | | AlgorithmIdentifier DL_Scheme_PublicKey::algorithm_identifier() const |
26 | 0 | { |
27 | 0 | return AlgorithmIdentifier(get_oid(), |
28 | 0 | m_group.DER_encode(group_format())); |
29 | 0 | } |
30 | | |
31 | | std::vector<uint8_t> DL_Scheme_PublicKey::public_key_bits() const |
32 | 0 | { |
33 | 0 | std::vector<uint8_t> output; |
34 | 0 | DER_Encoder(output).encode(m_y); |
35 | 0 | return output; |
36 | 0 | } |
37 | | |
38 | | DL_Scheme_PublicKey::DL_Scheme_PublicKey(const DL_Group& group, const BigInt& y) : |
39 | | m_y(y), |
40 | | m_group(group) |
41 | 0 | { |
42 | 0 | } |
43 | | |
44 | | DL_Scheme_PublicKey::DL_Scheme_PublicKey(const AlgorithmIdentifier& alg_id, |
45 | | const std::vector<uint8_t>& key_bits, |
46 | | DL_Group_Format format) : |
47 | | m_group(alg_id.get_parameters(), format) |
48 | 259 | { |
49 | 259 | BER_Decoder(key_bits).decode(m_y); |
50 | 259 | } |
51 | | |
52 | | secure_vector<uint8_t> DL_Scheme_PrivateKey::private_key_bits() const |
53 | 0 | { |
54 | 0 | return DER_Encoder().encode(m_x).get_contents(); |
55 | 0 | } |
56 | | |
57 | | DL_Scheme_PrivateKey::DL_Scheme_PrivateKey(const AlgorithmIdentifier& alg_id, |
58 | | const secure_vector<uint8_t>& key_bits, |
59 | | DL_Group_Format format) |
60 | 230 | { |
61 | 230 | m_group.BER_decode(alg_id.get_parameters(), format); |
62 | | |
63 | 230 | BER_Decoder(key_bits).decode(m_x); |
64 | 230 | } |
65 | | |
66 | | /* |
67 | | * Check Public DL Parameters |
68 | | */ |
69 | | bool DL_Scheme_PublicKey::check_key(RandomNumberGenerator& rng, |
70 | | bool strong) const |
71 | 0 | { |
72 | 0 | return m_group.verify_group(rng, strong) && m_group.verify_public_element(m_y); |
73 | 0 | } |
74 | | |
75 | | /* |
76 | | * Check DL Scheme Private Parameters |
77 | | */ |
78 | | bool DL_Scheme_PrivateKey::check_key(RandomNumberGenerator& rng, |
79 | | bool strong) const |
80 | 0 | { |
81 | 0 | return m_group.verify_group(rng, strong) && m_group.verify_element_pair(m_y, m_x); |
82 | 0 | } |
83 | | |
84 | | } |