diff options
| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2018-07-15 14:33:48 +0100 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2018-08-16 11:57:49 +0000 |
| commit | ab74dc277aac3922a266ccae30fa2c30d9222790 (patch) | |
| tree | 5846c8cf7c865417039aa90540f330e950625ae6 /src/crypto | |
| parent | common: add a class to safely wrap mlock/munlock (diff) | |
| download | monero-ab74dc277aac3922a266ccae30fa2c30d9222790.tar.xz | |
crypto: make secret_key automatically mlock
Diffstat (limited to 'src/crypto')
| -rw-r--r-- | src/crypto/chacha.h | 11 | ||||
| -rw-r--r-- | src/crypto/crypto.h | 3 |
2 files changed, 8 insertions, 6 deletions
diff --git a/src/crypto/chacha.h b/src/crypto/chacha.h index 1dc270faf..6e85ad0e9 100644 --- a/src/crypto/chacha.h +++ b/src/crypto/chacha.h @@ -40,6 +40,7 @@ #include <memory.h> #include "memwipe.h" +#include "mlocker.h" #include "hash.h" namespace crypto { @@ -50,7 +51,7 @@ namespace crypto { #if defined(__cplusplus) } - using chacha_key = tools::scrubbed_arr<uint8_t, CHACHA_KEY_SIZE>; + using chacha_key = epee::mlocked<tools::scrubbed_arr<uint8_t, CHACHA_KEY_SIZE>>; #pragma pack(push, 1) // MS VC 2012 doesn't interpret `class chacha_iv` as POD in spite of [9.0.10], so it is a struct @@ -71,20 +72,20 @@ namespace crypto { inline void generate_chacha_key(const void *data, size_t size, chacha_key& key, uint64_t kdf_rounds) { static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key"); - tools::scrubbed_arr<char, HASH_SIZE> pwd_hash; + epee::mlocked<tools::scrubbed_arr<char, HASH_SIZE>> pwd_hash; crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); for (uint64_t n = 1; n < kdf_rounds; ++n) crypto::cn_slow_hash(pwd_hash.data(), pwd_hash.size(), pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); - memcpy(&unwrap(key), pwd_hash.data(), sizeof(key)); + memcpy(&unwrap(unwrap(key)), pwd_hash.data(), sizeof(key)); } inline void generate_chacha_key_prehashed(const void *data, size_t size, chacha_key& key, uint64_t kdf_rounds) { static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key"); - tools::scrubbed_arr<char, HASH_SIZE> pwd_hash; + epee::mlocked<tools::scrubbed_arr<char, HASH_SIZE>> pwd_hash; crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 1/*prehashed*/); for (uint64_t n = 1; n < kdf_rounds; ++n) crypto::cn_slow_hash(pwd_hash.data(), pwd_hash.size(), pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); - memcpy(&unwrap(key), pwd_hash.data(), sizeof(key)); + memcpy(&unwrap(unwrap(key)), pwd_hash.data(), sizeof(key)); } inline void generate_chacha_key(std::string password, chacha_key& key, uint64_t kdf_rounds) { diff --git a/src/crypto/crypto.h b/src/crypto/crypto.h index a2d61b04e..c1576a218 100644 --- a/src/crypto/crypto.h +++ b/src/crypto/crypto.h @@ -41,6 +41,7 @@ #include "common/pod-class.h" #include "common/util.h" #include "memwipe.h" +#include "mlocker.h" #include "generic-ops.h" #include "hex.h" #include "span.h" @@ -65,7 +66,7 @@ namespace crypto { friend class crypto_ops; }; - using secret_key = tools::scrubbed<ec_scalar>; + using secret_key = epee::mlocked<tools::scrubbed<ec_scalar>>; POD_CLASS public_keyV { std::vector<public_key> keys; |