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add CFB mode FIPS variant

pull/2/head
weidai 2004-04-29 16:00:39 +00:00
parent 5fc752d268
commit afb08eb452
4 changed files with 34 additions and 8 deletions
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16
dlltest.cpp
View File

@ -60,20 +60,20 @@ void FIPS140_SampleApplication()
byte ciphertext[24];
byte decrypted[24];
CFB_Mode<DES_EDE3>::Encryption encryption_DES_EDE3_CBC;
encryption_DES_EDE3_CBC.SetKeyWithIV(key, sizeof(key), iv);
encryption_DES_EDE3_CBC.ProcessString(ciphertext, plaintext, 24);
CFB_FIPS_Mode<DES_EDE3>::Encryption encryption_DES_EDE3_CFB;
encryption_DES_EDE3_CFB.SetKeyWithIV(key, sizeof(key), iv);
encryption_DES_EDE3_CFB.ProcessString(ciphertext, plaintext, 23);
CFB_Mode<DES_EDE3>::Decryption decryption_DES_EDE3_CBC;
decryption_DES_EDE3_CBC.SetKeyWithIV(key, sizeof(key), iv);
decryption_DES_EDE3_CBC.ProcessString(decrypted, ciphertext, 24);
CFB_FIPS_Mode<DES_EDE3>::Decryption decryption_DES_EDE3_CFB;
decryption_DES_EDE3_CFB.SetKeyWithIV(key, sizeof(key), iv);
decryption_DES_EDE3_CFB.ProcessString(decrypted, ciphertext, 24);
if (memcmp(plaintext, decrypted, 24) != 0)
{
cerr << "DES-EDE3-CBC Encryption/decryption failed.\n";
cerr << "DES-EDE3-CFB Encryption/decryption failed.\n";
abort();
}
cout << "3. DES-EDE3-CBC Encryption/decryption succeeded.\n";
cout << "3. DES-EDE3-CFB Encryption/decryption succeeded.\n";
// hash
const byte message[] = {'a', 'b', 'c'};

15
modes.h
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@ -328,6 +328,21 @@ struct CFB_Mode_ExternalCipher : public CipherModeDocumentation
typedef CipherModeFinalTemplate_ExternalCipher<ConcretePolicyHolder<Empty, CFB_DecryptionTemplate<AbstractPolicyHolder<CFB_CipherAbstractPolicy, CFB_ModePolicy> > > > Decryption;
};
//! CFB mode FIPS variant, requiring full block plaintext according to FIPS 800-38A
template <class CIPHER>
struct CFB_FIPS_Mode : public CipherModeDocumentation
{
typedef CipherModeFinalTemplate_CipherHolder<CPP_TYPENAME CIPHER::Encryption, ConcretePolicyHolder<Empty, CFB_RequireFullDataBlocks<CFB_EncryptionTemplate<AbstractPolicyHolder<CFB_CipherAbstractPolicy, CFB_ModePolicy> > > > > Encryption;
typedef CipherModeFinalTemplate_CipherHolder<CPP_TYPENAME CIPHER::Encryption, ConcretePolicyHolder<Empty, CFB_RequireFullDataBlocks<CFB_DecryptionTemplate<AbstractPolicyHolder<CFB_CipherAbstractPolicy, CFB_ModePolicy> > > > > Decryption;
};
//! CFB mode FIPS variant, requiring full block plaintext according to FIPS 800-38A, external cipher
struct CFB_FIPS_Mode_ExternalCipher : public CipherModeDocumentation
{
typedef CipherModeFinalTemplate_ExternalCipher<ConcretePolicyHolder<Empty, CFB_RequireFullDataBlocks<CFB_EncryptionTemplate<AbstractPolicyHolder<CFB_CipherAbstractPolicy, CFB_ModePolicy> > > > > Encryption;
typedef CipherModeFinalTemplate_ExternalCipher<ConcretePolicyHolder<Empty, CFB_RequireFullDataBlocks<CFB_DecryptionTemplate<AbstractPolicyHolder<CFB_CipherAbstractPolicy, CFB_ModePolicy> > > > > Decryption;
};
CRYPTOPP_DLL_TEMPLATE_CLASS AdditiveCipherTemplate<AbstractPolicyHolder<AdditiveCipherAbstractPolicy, OFB_ModePolicy> >;
//! OFB mode

2
strciphr.cpp
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@ -119,6 +119,8 @@ void CFB_CipherTemplate<BASE>::Resynchronize(const byte *iv)
template <class BASE>
void CFB_CipherTemplate<BASE>::ProcessData(byte *outString, const byte *inString, unsigned int length)
{
assert(length % MandatoryBlockSize() == 0);
PolicyInterface &policy = AccessPolicy();
unsigned int bytesPerIteration = policy.GetBytesPerIteration();
unsigned int alignment = policy.GetAlignment();

9
strciphr.h
View File

@ -251,10 +251,19 @@ class CRYPTOPP_NO_VTABLE CFB_DecryptionTemplate : public CFB_CipherTemplate<BASE
void CombineMessageAndShiftRegister(byte *output, byte *reg, const byte *message, unsigned int length);
};
template <class BASE>
class CFB_RequireFullDataBlocks : public BASE
{
public:
unsigned int MandatoryBlockSize() const {return OptimalBlockSize();}
};
/*
CRYPTOPP_DLL_TEMPLATE_CLASS AbstractPolicyHolder<CFB_CipherAbstractPolicy, SymmetricCipher>;
CRYPTOPP_DLL_TEMPLATE_CLASS CFB_CipherTemplate<AbstractPolicyHolder<CFB_CipherAbstractPolicy, SymmetricCipher> >;
CRYPTOPP_DLL_TEMPLATE_CLASS CFB_EncryptionTemplate<>;
CRYPTOPP_DLL_TEMPLATE_CLASS CFB_DecryptionTemplate<>;
*/
template <class BASE, class INFO = BASE>
class SymmetricCipherFinal : public AlgorithmImpl<SimpleKeyingInterfaceImpl<BASE, INFO>, INFO>