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authormadmaxoft <github@xoft.cz>2014-04-29 17:37:15 +0200
committermadmaxoft <github@xoft.cz>2014-04-29 17:37:15 +0200
commit6cb2d2461f869d5c9d986cccec5edf1021878df2 (patch)
tree41445e9e4a1336026e905be5a20700b58511c58d /src/Crypto.cpp
parentMoved cPublicKey to its separate file in PolarSSL++. (diff)
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Diffstat (limited to 'src/Crypto.cpp')
-rw-r--r--src/Crypto.cpp257
1 files changed, 0 insertions, 257 deletions
diff --git a/src/Crypto.cpp b/src/Crypto.cpp
deleted file mode 100644
index 370b498bf..000000000
--- a/src/Crypto.cpp
+++ /dev/null
@@ -1,257 +0,0 @@
-
-// Crypto.cpp
-
-// Implements classes that wrap the cryptographic code library
-
-#include "Globals.h"
-#include "Crypto.h"
-
-#include "polarssl/pk.h"
-
-
-
-
-
-/*
-// Self-test the hash formatting for known values:
-// sha1(Notch) : 4ed1f46bbe04bc756bcb17c0c7ce3e4632f06a48
-// sha1(jeb_) : -7c9d5b0044c130109a5d7b5fb5c317c02b4e28c1
-// sha1(simon) : 88e16a1019277b15d58faf0541e11910eb756f6
-
-class Test
-{
-public:
- Test(void)
- {
- AString DigestNotch, DigestJeb, DigestSimon;
- Byte Digest[20];
- cSHA1Checksum Checksum;
- Checksum.Update((const Byte *)"Notch", 5);
- Checksum.Finalize(Digest);
- cSHA1Checksum::DigestToJava(Digest, DigestNotch);
- Checksum.Restart();
- Checksum.Update((const Byte *)"jeb_", 4);
- Checksum.Finalize(Digest);
- cSHA1Checksum::DigestToJava(Digest, DigestJeb);
- Checksum.Restart();
- Checksum.Update((const Byte *)"simon", 5);
- Checksum.Finalize(Digest);
- cSHA1Checksum::DigestToJava(Digest, DigestSimon);
- printf("Notch: \"%s\"\n", DigestNotch.c_str());
- printf("jeb_: \"%s\"\n", DigestJeb.c_str());
- printf("simon: \"%s\"\n", DigestSimon.c_str());
- assert(DigestNotch == "4ed1f46bbe04bc756bcb17c0c7ce3e4632f06a48");
- assert(DigestJeb == "-7c9d5b0044c130109a5d7b5fb5c317c02b4e28c1");
- assert(DigestSimon == "88e16a1019277b15d58faf0541e11910eb756f6");
- }
-} test;
-*/
-
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// cAESCFBDecryptor:
-
-cAESCFBDecryptor::cAESCFBDecryptor(void) :
- m_IVOffset(0),
- m_IsValid(false)
-{
-}
-
-
-
-
-
-cAESCFBDecryptor::~cAESCFBDecryptor()
-{
- // Clear the leftover in-memory data, so that they can't be accessed by a backdoor
- memset(&m_Aes, 0, sizeof(m_Aes));
-}
-
-
-
-
-
-void cAESCFBDecryptor::Init(const Byte a_Key[16], const Byte a_IV[16])
-{
- ASSERT(!IsValid()); // Cannot Init twice
-
- memcpy(m_IV, a_IV, 16);
- aes_setkey_enc(&m_Aes, a_Key, 128);
- m_IsValid = true;
-}
-
-
-
-
-
-void cAESCFBDecryptor::ProcessData(Byte * a_DecryptedOut, const Byte * a_EncryptedIn, size_t a_Length)
-{
- ASSERT(IsValid()); // Must Init() first
-
- // PolarSSL doesn't support AES-CFB8, need to implement it manually:
- for (size_t i = 0; i < a_Length; i++)
- {
- Byte Buffer[sizeof(m_IV)];
- aes_crypt_ecb(&m_Aes, AES_ENCRYPT, m_IV, Buffer);
- for (size_t idx = 0; idx < sizeof(m_IV) - 1; idx++)
- {
- m_IV[idx] = m_IV[idx + 1];
- }
- m_IV[sizeof(m_IV) - 1] = a_EncryptedIn[i];
- a_DecryptedOut[i] = a_EncryptedIn[i] ^ Buffer[0];
- }
-}
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// cAESCFBEncryptor:
-
-cAESCFBEncryptor::cAESCFBEncryptor(void) :
- m_IVOffset(0),
- m_IsValid(false)
-{
-}
-
-
-
-
-
-cAESCFBEncryptor::~cAESCFBEncryptor()
-{
- // Clear the leftover in-memory data, so that they can't be accessed by a backdoor
- memset(&m_Aes, 0, sizeof(m_Aes));
-}
-
-
-
-
-
-void cAESCFBEncryptor::Init(const Byte a_Key[16], const Byte a_IV[16])
-{
- ASSERT(!IsValid()); // Cannot Init twice
- ASSERT(m_IVOffset == 0);
-
- memcpy(m_IV, a_IV, 16);
- aes_setkey_enc(&m_Aes, a_Key, 128);
- m_IsValid = true;
-}
-
-
-
-
-
-void cAESCFBEncryptor::ProcessData(Byte * a_EncryptedOut, const Byte * a_PlainIn, size_t a_Length)
-{
- ASSERT(IsValid()); // Must Init() first
-
- // PolarSSL doesn't do AES-CFB8, so we need to implement it ourselves:
- for (size_t i = 0; i < a_Length; i++)
- {
- Byte Buffer[sizeof(m_IV)];
- aes_crypt_ecb(&m_Aes, AES_ENCRYPT, m_IV, Buffer);
- for (size_t idx = 0; idx < sizeof(m_IV) - 1; idx++)
- {
- m_IV[idx] = m_IV[idx + 1];
- }
- a_EncryptedOut[i] = a_PlainIn[i] ^ Buffer[0];
- m_IV[sizeof(m_IV) - 1] = a_EncryptedOut[i];
- }
-}
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// cSHA1Checksum:
-
-cSHA1Checksum::cSHA1Checksum(void) :
- m_DoesAcceptInput(true)
-{
- sha1_starts(&m_Sha1);
-}
-
-
-
-
-
-void cSHA1Checksum::Update(const Byte * a_Data, size_t a_Length)
-{
- ASSERT(m_DoesAcceptInput); // Not Finalize()-d yet, or Restart()-ed
-
- sha1_update(&m_Sha1, a_Data, a_Length);
-}
-
-
-
-
-
-void cSHA1Checksum::Finalize(cSHA1Checksum::Checksum & a_Output)
-{
- ASSERT(m_DoesAcceptInput); // Not Finalize()-d yet, or Restart()-ed
-
- sha1_finish(&m_Sha1, a_Output);
- m_DoesAcceptInput = false;
-}
-
-
-
-
-
-void cSHA1Checksum::DigestToJava(const Checksum & a_Digest, AString & a_Out)
-{
- Checksum Digest;
- memcpy(Digest, a_Digest, sizeof(Digest));
-
- bool IsNegative = (Digest[0] >= 0x80);
- if (IsNegative)
- {
- // Two's complement:
- bool carry = true; // Add one to the whole number
- for (int i = 19; i >= 0; i--)
- {
- Digest[i] = ~Digest[i];
- if (carry)
- {
- carry = (Digest[i] == 0xff);
- Digest[i]++;
- }
- }
- }
- a_Out.clear();
- a_Out.reserve(40);
- for (int i = 0; i < 20; i++)
- {
- AppendPrintf(a_Out, "%02x", Digest[i]);
- }
- while ((a_Out.length() > 0) && (a_Out[0] == '0'))
- {
- a_Out.erase(0, 1);
- }
- if (IsNegative)
- {
- a_Out.insert(0, "-");
- }
-}
-
-
-
-
-
-
-void cSHA1Checksum::Restart(void)
-{
- sha1_starts(&m_Sha1);
- m_DoesAcceptInput = true;
-}
-
-
-
-