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Diffstat (limited to 'src/lib/kdf/sp800_108')
-rw-r--r--src/lib/kdf/sp800_108/sp800_108.cpp208
1 files changed, 104 insertions, 104 deletions
diff --git a/src/lib/kdf/sp800_108/sp800_108.cpp b/src/lib/kdf/sp800_108/sp800_108.cpp
index 0f9eed1f2..137ade106 100644
--- a/src/lib/kdf/sp800_108/sp800_108.cpp
+++ b/src/lib/kdf/sp800_108/sp800_108.cpp
@@ -16,39 +16,39 @@ size_t SP800_108_Counter::kdf(uint8_t key[], size_t key_len,
const uint8_t salt[], size_t salt_len,
const uint8_t label[], size_t label_len) const
{
- const std::size_t prf_len = m_prf->output_length();
- const uint8_t delim = 0;
- uint8_t *p = key;
- uint32_t counter = 1;
- uint32_t length = key_len * 8;
- uint8_t be_len[4] = { 0 };
- secure_vector<uint8_t> tmp;
+ const std::size_t prf_len = m_prf->output_length();
+ const uint8_t delim = 0;
+ const uint32_t length = static_cast<uint32_t>(key_len * 8);
- store_be(length, be_len);
- m_prf->set_key(secret, secret_len);
+ uint8_t *p = key;
+ uint32_t counter = 1;
+ uint8_t be_len[4] = { 0 };
+ secure_vector<uint8_t> tmp;
- while(p < key + key_len && counter != 0)
- {
- const std::size_t to_copy = std::min< std::size_t >(key + key_len - p, prf_len);
- uint8_t be_cnt[4] = { 0 };
+ store_be(length, be_len);
+ m_prf->set_key(secret, secret_len);
- store_be(counter, be_cnt);
+ while(p < key + key_len && counter != 0)
+ {
+ const std::size_t to_copy = std::min< std::size_t >(key + key_len - p, prf_len);
+ uint8_t be_cnt[4] = { 0 };
- m_prf->update(be_cnt,4);
- m_prf->update(label,label_len);
- m_prf->update(delim);
- m_prf->update(salt,salt_len);
- m_prf->update(be_len,4);
- m_prf->final(tmp);
+ store_be(counter, be_cnt);
- std::move(tmp.begin(), tmp.begin() + to_copy, p);
- ++counter;
+ m_prf->update(be_cnt,4);
+ m_prf->update(label,label_len);
+ m_prf->update(delim);
+ m_prf->update(salt,salt_len);
+ m_prf->update(be_len,4);
+ m_prf->final(tmp);
- if (counter == 0)
- throw Invalid_Argument("Can't process more than 4GB");
+ copy_mem(p, tmp.data(), to_copy);
+ p += to_copy;
- p += to_copy;
- }
+ ++counter;
+ if(counter == 0)
+ throw Invalid_Argument("Can't process more than 4GB");
+ }
return key_len;
}
@@ -58,98 +58,98 @@ size_t SP800_108_Feedback::kdf(uint8_t key[], size_t key_len,
const uint8_t salt[], size_t salt_len,
const uint8_t label[], size_t label_len) const
{
- const std::size_t prf_len = m_prf->output_length();
- const std::size_t iv_len = (salt_len >= prf_len ? prf_len : 0);
- const uint8_t delim = 0;
+ const uint32_t length = static_cast<uint32_t>(key_len * 8);
+ const std::size_t prf_len = m_prf->output_length();
+ const std::size_t iv_len = (salt_len >= prf_len ? prf_len : 0);
+ const uint8_t delim = 0;
- uint8_t *p = key;
- uint32_t counter = 1;
- uint32_t length = key_len * 8;
- uint8_t be_len[4] = { 0 };
- secure_vector< uint8_t > prev(salt, salt + iv_len);
- secure_vector< uint8_t > ctx(salt + iv_len, salt + salt_len);
+ uint8_t *p = key;
+ uint32_t counter = 1;
+ uint8_t be_len[4] = { 0 };
+ secure_vector< uint8_t > prev(salt, salt + iv_len);
+ secure_vector< uint8_t > ctx(salt + iv_len, salt + salt_len);
- store_be(length, be_len);
- m_prf->set_key(secret, secret_len);
+ store_be(length, be_len);
+ m_prf->set_key(secret, secret_len);
- while(p < key + key_len && counter != 0)
- {
- const std::size_t to_copy = std::min< std::size_t >(key + key_len - p, prf_len);
- uint8_t be_cnt[4] = { 0 };
+ while(p < key + key_len && counter != 0)
+ {
+ const std::size_t to_copy = std::min< std::size_t >(key + key_len - p, prf_len);
+ uint8_t be_cnt[4] = { 0 };
- store_be(counter, be_cnt);
+ store_be(counter, be_cnt);
- m_prf->update(prev);
- m_prf->update(be_cnt,4);
- m_prf->update(label,label_len);
- m_prf->update(delim);
- m_prf->update(ctx);
- m_prf->update(be_len,4);
- m_prf->final(prev);
+ m_prf->update(prev);
+ m_prf->update(be_cnt,4);
+ m_prf->update(label,label_len);
+ m_prf->update(delim);
+ m_prf->update(ctx);
+ m_prf->update(be_len,4);
+ m_prf->final(prev);
- std::copy(prev.begin(), prev.begin() + to_copy, p);
- ++counter;
+ copy_mem(p, prev.data(), to_copy);
+ p += to_copy;
- if (counter == 0)
- throw Invalid_Argument("Can't process more than 4GB");
+ ++counter;
- p += to_copy;
- }
+ if(counter == 0)
+ throw Invalid_Argument("Can't process more than 4GB");
+ }
return key_len;
}
size_t SP800_108_Pipeline::kdf(uint8_t key[], size_t key_len,
- const uint8_t secret[], size_t secret_len,
- const uint8_t salt[], size_t salt_len,
- const uint8_t label[], size_t label_len) const
+ const uint8_t secret[], size_t secret_len,
+ const uint8_t salt[], size_t salt_len,
+ const uint8_t label[], size_t label_len) const
{
- const std::size_t prf_len = m_prf->output_length();
- const uint8_t delim = 0;
-
- uint8_t *p = key;
- uint32_t counter = 1;
- uint32_t length = key_len * 8;
- uint8_t be_len[4] = { 0 };
- secure_vector<uint8_t> ai, ki;
-
- store_be(length, be_len);
- m_prf->set_key(secret,secret_len);
-
- // A(0)
- std::copy(label,label + label_len,std::back_inserter(ai));
- ai.emplace_back(delim);
- std::copy(salt,salt + salt_len,std::back_inserter(ai));
- std::copy(be_len,be_len + 4,std::back_inserter(ai));
-
- while(p < key + key_len && counter != 0)
- {
- // A(i)
- m_prf->update(ai);
- m_prf->final(ai);
-
- // K(i)
- const std::size_t to_copy = std::min< std::size_t >(key + key_len - p, prf_len);
- uint8_t be_cnt[4] = { 0 };
-
- store_be(counter, be_cnt);
-
- m_prf->update(ai);
- m_prf->update(be_cnt,4);
- m_prf->update(label, label_len);
- m_prf->update(delim);
- m_prf->update(salt, salt_len);
- m_prf->update(be_len,4);
- m_prf->final(ki);
-
- std::copy(ki.begin(), ki.begin() + to_copy, p);
- ++counter;
-
- if (counter == 0)
- throw Invalid_Argument("Can't process more than 4GB");
-
- p += to_copy;
- }
+ const uint32_t length = static_cast<uint32_t>(key_len * 8);
+ const std::size_t prf_len = m_prf->output_length();
+ const uint8_t delim = 0;
+
+ uint8_t *p = key;
+ uint32_t counter = 1;
+ uint8_t be_len[4] = { 0 };
+ secure_vector<uint8_t> ai, ki;
+
+ store_be(length, be_len);
+ m_prf->set_key(secret,secret_len);
+
+ // A(0)
+ std::copy(label,label + label_len,std::back_inserter(ai));
+ ai.emplace_back(delim);
+ std::copy(salt,salt + salt_len,std::back_inserter(ai));
+ std::copy(be_len,be_len + 4,std::back_inserter(ai));
+
+ while(p < key + key_len && counter != 0)
+ {
+ // A(i)
+ m_prf->update(ai);
+ m_prf->final(ai);
+
+ // K(i)
+ const std::size_t to_copy = std::min< std::size_t >(key + key_len - p, prf_len);
+ uint8_t be_cnt[4] = { 0 };
+
+ store_be(counter, be_cnt);
+
+ m_prf->update(ai);
+ m_prf->update(be_cnt,4);
+ m_prf->update(label, label_len);
+ m_prf->update(delim);
+ m_prf->update(salt, salt_len);
+ m_prf->update(be_len,4);
+ m_prf->final(ki);
+
+ copy_mem(p, ki.data(), to_copy);
+ p += to_copy;
+
+ ++counter;
+
+ if(counter == 0)
+ throw Invalid_Argument("Can't process more than 4GB");
+ }
return key_len;
}