/src/botan/src/lib/kdf/sp800_56c/sp800_56c.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * KDF defined in NIST SP 800-56c |
3 | | * (C) 2016 Kai Michaelis |
4 | | * |
5 | | * Botan is released under the Simplified BSD License (see license.txt) |
6 | | */ |
7 | | |
8 | | #include <botan/internal/sp800_56c.h> |
9 | | |
10 | | namespace Botan { |
11 | | |
12 | | void SP800_56C::kdf(uint8_t key[], size_t key_len, |
13 | | const uint8_t secret[], size_t secret_len, |
14 | | const uint8_t salt[], size_t salt_len, |
15 | | const uint8_t label[], size_t label_len) const |
16 | 0 | { |
17 | | // Randomness Extraction |
18 | 0 | secure_vector<uint8_t> k_dk; |
19 | |
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20 | 0 | m_prf->set_key(salt, salt_len); |
21 | 0 | m_prf->update(secret, secret_len); |
22 | 0 | m_prf->final(k_dk); |
23 | | |
24 | | // Key Expansion |
25 | 0 | m_exp->kdf(key, key_len, k_dk.data(), k_dk.size(), nullptr, 0, label, label_len); |
26 | 0 | } |
27 | | |
28 | | } |