EXPERIMENTAL: custom peer collector

[novacoin.git] / src / crypter.cpp

diff --git a/src/crypter.cpp b/src/crypter.cpp
index 181b8fa..2a6f36d 100644 (file)
--- a/src/crypter.cpp
+++ b/src/crypter.cpp
@@ -6,12 +6,13 @@
 #include <openssl/evp.h>
 #include <vector>
 #include <string>
+
+#include "crypter.h"
+
 #ifdef WIN32
 #include <windows.h>
 #endif
 
-#include "crypter.h"
-
 bool CCrypter::SetKeyFromPassphrase(const SecureString& strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod)
 {
     if (nRounds < 1 || chSalt.size() != WALLET_CRYPTO_SALT_SIZE)
@@ -19,13 +20,15 @@ bool CCrypter::SetKeyFromPassphrase(const SecureString& strKeyData, const std::v
 
     int i = 0;
     if (nDerivationMethod == 0)
+    {
         i = EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha512(), &chSalt[0],
                           (unsigned char *)&strKeyData[0], strKeyData.size(), nRounds, chKey, chIV);
+    }
 
     if (i != (int)WALLET_CRYPTO_KEY_SIZE)
     {
-        memset(&chKey, 0, sizeof chKey);
-        memset(&chIV, 0, sizeof chIV);
+        OPENSSL_cleanse(&chKey, sizeof chKey);
+        OPENSSL_cleanse(&chIV, sizeof chIV);
         return false;
     }
 
@@ -61,9 +64,9 @@ bool CCrypter::Encrypt(const CKeyingMaterial& vchPlaintext, std::vector<unsigned
     bool fOk = true;
 
     EVP_CIPHER_CTX_init(&ctx);
-    if (fOk) fOk = EVP_EncryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV);
-    if (fOk) fOk = EVP_EncryptUpdate(&ctx, &vchCiphertext[0], &nCLen, &vchPlaintext[0], nLen);
-    if (fOk) fOk = EVP_EncryptFinal_ex(&ctx, (&vchCiphertext[0])+nCLen, &nFLen);
+    if (fOk) fOk = EVP_EncryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
+    if (fOk) fOk = EVP_EncryptUpdate(&ctx, &vchCiphertext[0], &nCLen, &vchPlaintext[0], nLen) != 0;
+    if (fOk) fOk = EVP_EncryptFinal_ex(&ctx, (&vchCiphertext[0]) + nCLen, &nFLen) != 0;
     EVP_CIPHER_CTX_cleanup(&ctx);
 
     if (!fOk) return false;
@@ -88,9 +91,9 @@ bool CCrypter::Decrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingM
     bool fOk = true;
 
     EVP_CIPHER_CTX_init(&ctx);
-    if (fOk) fOk = EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV);
-    if (fOk) fOk = EVP_DecryptUpdate(&ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen);
-    if (fOk) fOk = EVP_DecryptFinal_ex(&ctx, (&vchPlaintext[0])+nPLen, &nFLen);
+    if (fOk) fOk = EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
+    if (fOk) fOk = EVP_DecryptUpdate(&ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen) != 0;
+    if (fOk) fOk = EVP_DecryptFinal_ex(&ctx, (&vchPlaintext[0]) + nPLen, &nFLen) != 0;
     EVP_CIPHER_CTX_cleanup(&ctx);
 
     if (!fOk) return false;