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-rw-r--r--src/Crypto.cpp509
1 files changed, 0 insertions, 509 deletions
diff --git a/src/Crypto.cpp b/src/Crypto.cpp
deleted file mode 100644
index 16be5ec35..000000000
--- a/src/Crypto.cpp
+++ /dev/null
@@ -1,509 +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;
-*/
-
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// cRSAPrivateKey:
-
-cRSAPrivateKey::cRSAPrivateKey(void)
-{
- rsa_init(&m_Rsa, RSA_PKCS_V15, 0);
- InitRnd();
-}
-
-
-
-
-
-cRSAPrivateKey::cRSAPrivateKey(const cRSAPrivateKey & a_Other)
-{
- rsa_init(&m_Rsa, RSA_PKCS_V15, 0);
- rsa_copy(&m_Rsa, &a_Other.m_Rsa);
- InitRnd();
-}
-
-
-
-
-
-cRSAPrivateKey::~cRSAPrivateKey()
-{
- entropy_free(&m_Entropy);
- rsa_free(&m_Rsa);
-}
-
-
-
-
-
-void cRSAPrivateKey::InitRnd(void)
-{
- entropy_init(&m_Entropy);
- const unsigned char pers[] = "rsa_genkey";
- ctr_drbg_init(&m_Ctr_drbg, entropy_func, &m_Entropy, pers, sizeof(pers) - 1);
-}
-
-
-
-
-
-bool cRSAPrivateKey::Generate(unsigned a_KeySizeBits)
-{
- if (rsa_gen_key(&m_Rsa, ctr_drbg_random, &m_Ctr_drbg, a_KeySizeBits, 65537) != 0)
- {
- // Key generation failed
- return false;
- }
-
- return true;
-}
-
-
-
-
-
-AString cRSAPrivateKey::GetPubKeyDER(void)
-{
- class cPubKey
- {
- public:
- cPubKey(rsa_context * a_Rsa) :
- m_IsValid(false)
- {
- pk_init(&m_Key);
- if (pk_init_ctx(&m_Key, pk_info_from_type(POLARSSL_PK_RSA)) != 0)
- {
- ASSERT(!"Cannot init PrivKey context");
- return;
- }
- if (rsa_copy(pk_rsa(m_Key), a_Rsa) != 0)
- {
- ASSERT(!"Cannot copy PrivKey to PK context");
- return;
- }
- m_IsValid = true;
- }
-
- ~cPubKey()
- {
- if (m_IsValid)
- {
- pk_free(&m_Key);
- }
- }
-
- operator pk_context * (void) { return &m_Key; }
-
- protected:
- bool m_IsValid;
- pk_context m_Key;
- } PkCtx(&m_Rsa);
-
- unsigned char buf[3000];
- int res = pk_write_pubkey_der(PkCtx, buf, sizeof(buf));
- if (res < 0)
- {
- return AString();
- }
- return AString((const char *)(buf + sizeof(buf) - res), (size_t)res);
-}
-
-
-
-
-
-int cRSAPrivateKey::Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength)
-{
- if (a_EncryptedLength < m_Rsa.len)
- {
- LOGD("%s: Invalid a_EncryptedLength: got %u, exp at least %u",
- __FUNCTION__, (unsigned)a_EncryptedLength, (unsigned)(m_Rsa.len)
- );
- ASSERT(!"Invalid a_DecryptedMaxLength!");
- return -1;
- }
- if (a_DecryptedMaxLength < m_Rsa.len)
- {
- LOGD("%s: Invalid a_DecryptedMaxLength: got %u, exp at least %u",
- __FUNCTION__, (unsigned)a_EncryptedLength, (unsigned)(m_Rsa.len)
- );
- ASSERT(!"Invalid a_DecryptedMaxLength!");
- return -1;
- }
- size_t DecryptedLength;
- int res = rsa_pkcs1_decrypt(
- &m_Rsa, ctr_drbg_random, &m_Ctr_drbg, RSA_PRIVATE, &DecryptedLength,
- a_EncryptedData, a_DecryptedData, a_DecryptedMaxLength
- );
- if (res != 0)
- {
- return -1;
- }
- return (int)DecryptedLength;
-}
-
-
-
-
-
-int cRSAPrivateKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength)
-{
- if (a_EncryptedMaxLength < m_Rsa.len)
- {
- LOGD("%s: Invalid a_EncryptedMaxLength: got %u, exp at least %u",
- __FUNCTION__, (unsigned)a_EncryptedMaxLength, (unsigned)(m_Rsa.len)
- );
- ASSERT(!"Invalid a_DecryptedMaxLength!");
- return -1;
- }
- if (a_PlainLength < m_Rsa.len)
- {
- LOGD("%s: Invalid a_PlainLength: got %u, exp at least %u",
- __FUNCTION__, (unsigned)a_PlainLength, (unsigned)(m_Rsa.len)
- );
- ASSERT(!"Invalid a_PlainLength!");
- return -1;
- }
- int res = rsa_pkcs1_encrypt(
- &m_Rsa, ctr_drbg_random, &m_Ctr_drbg, RSA_PRIVATE,
- a_PlainLength, a_PlainData, a_EncryptedData
- );
- if (res != 0)
- {
- return -1;
- }
- return (int)m_Rsa.len;
-}
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// cPublicKey:
-
-cPublicKey::cPublicKey(const AString & a_PublicKeyDER)
-{
- pk_init(&m_Pk);
- if (pk_parse_public_key(&m_Pk, (const Byte *)a_PublicKeyDER.data(), a_PublicKeyDER.size()) != 0)
- {
- ASSERT(!"Cannot parse PubKey");
- return;
- }
- InitRnd();
-}
-
-
-
-
-
-cPublicKey::~cPublicKey()
-{
- pk_free(&m_Pk);
-}
-
-
-
-
-
-int cPublicKey::Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength)
-{
- size_t DecryptedLen = a_DecryptedMaxLength;
- int res = pk_decrypt(&m_Pk,
- a_EncryptedData, a_EncryptedLength,
- a_DecryptedData, &DecryptedLen, a_DecryptedMaxLength,
- ctr_drbg_random, &m_Ctr_drbg
- );
- if (res != 0)
- {
- return res;
- }
- return (int)DecryptedLen;
-}
-
-
-
-
-
-int cPublicKey::Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength)
-{
- size_t EncryptedLength = a_EncryptedMaxLength;
- int res = pk_encrypt(&m_Pk,
- a_PlainData, a_PlainLength, a_EncryptedData, &EncryptedLength, a_EncryptedMaxLength,
- ctr_drbg_random, &m_Ctr_drbg
- );
- if (res != 0)
- {
- return res;
- }
- return (int)EncryptedLength;
-}
-
-
-
-
-
-void cPublicKey::InitRnd(void)
-{
- entropy_init(&m_Entropy);
- const unsigned char pers[] = "rsa_genkey";
- ctr_drbg_init(&m_Ctr_drbg, entropy_func, &m_Entropy, pers, sizeof(pers) - 1);
-}
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// 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;
-}
-
-
-
-
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