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Diffstat (limited to 'src/Crypto.h')
| -rw-r--r-- | src/Crypto.h | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/src/Crypto.h b/src/Crypto.h deleted file mode 100644 index a9ec2c6d4..000000000 --- a/src/Crypto.h +++ /dev/null @@ -1,198 +0,0 @@ - -// Crypto.h - -// Declares classes that wrap the cryptographic code library - - - - - -#pragma once - -#include "polarssl/rsa.h" -#include "polarssl/aes.h" -#include "polarssl/entropy.h" -#include "polarssl/ctr_drbg.h" -#include "polarssl/sha1.h" -#include "polarssl/pk.h" - - - - - -/** Encapsulates an RSA private key used in PKI cryptography */ -class cRSAPrivateKey -{ -public: - /** Creates a new empty object, the key is not assigned */ - cRSAPrivateKey(void); - - /** Deep-copies the key from a_Other */ - cRSAPrivateKey(const cRSAPrivateKey & a_Other); - - ~cRSAPrivateKey(); - - /** Generates a new key within this object, with the specified size in bits. - Returns true on success, false on failure. */ - bool Generate(unsigned a_KeySizeBits = 1024); - - /** Returns the public key part encoded in ASN1 DER encoding */ - AString GetPubKeyDER(void); - - /** Decrypts the data using RSAES-PKCS#1 algorithm. - Both a_EncryptedData and a_DecryptedData must be at least <KeySizeBytes> bytes large. - Returns the number of bytes decrypted, or negative number for error. */ - int Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength); - - /** Encrypts the data using RSAES-PKCS#1 algorithm. - Both a_EncryptedData and a_DecryptedData must be at least <KeySizeBytes> bytes large. - Returns the number of bytes decrypted, or negative number for error. */ - int Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength); - -protected: - rsa_context m_Rsa; - entropy_context m_Entropy; - ctr_drbg_context m_Ctr_drbg; - - /** Initializes the m_Entropy and m_Ctr_drbg contexts - Common part of this object's construction, called from all constructors. */ - void InitRnd(void); -} ; - - - - - -class cPublicKey -{ -public: - cPublicKey(const AString & a_PublicKeyDER); - ~cPublicKey(); - - /** Decrypts the data using the stored public key - Both a_EncryptedData and a_DecryptedData must be at least <KeySizeBytes> bytes large. - Returns the number of bytes decrypted, or negative number for error. */ - int Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength); - - /** Encrypts the data using the stored public key - Both a_EncryptedData and a_DecryptedData must be at least <KeySizeBytes> bytes large. - Returns the number of bytes decrypted, or negative number for error. */ - int Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength); - -protected: - pk_context m_Pk; - entropy_context m_Entropy; - ctr_drbg_context m_Ctr_drbg; - - /** Initializes the m_Entropy and m_Ctr_drbg contexts - Common part of this object's construction, called from all constructors. */ - void InitRnd(void); -} ; - - - - - -/** Decrypts data using the AES / CFB (128) algorithm */ -class cAESCFBDecryptor -{ -public: - Byte test; - - cAESCFBDecryptor(void); - ~cAESCFBDecryptor(); - - /** Initializes the decryptor with the specified Key / IV */ - void Init(const Byte a_Key[16], const Byte a_IV[16]); - - /** Decrypts a_Length bytes of the encrypted data; produces a_Length output bytes */ - void ProcessData(Byte * a_DecryptedOut, const Byte * a_EncryptedIn, size_t a_Length); - - /** Returns true if the object has been initialized with the Key / IV */ - bool IsValid(void) const { return m_IsValid; } - -protected: - aes_context m_Aes; - - /** The InitialVector, used by the CFB mode decryption */ - Byte m_IV[16]; - - /** Current offset in the m_IV, used by the CFB mode decryption */ - size_t m_IVOffset; - - /** Indicates whether the object has been initialized with the Key / IV */ - bool m_IsValid; -} ; - - - - - -/** Encrypts data using the AES / CFB (128) algorithm */ -class cAESCFBEncryptor -{ -public: - cAESCFBEncryptor(void); - ~cAESCFBEncryptor(); - - /** Initializes the decryptor with the specified Key / IV */ - void Init(const Byte a_Key[16], const Byte a_IV[16]); - - /** Encrypts a_Length bytes of the plain data; produces a_Length output bytes */ - void ProcessData(Byte * a_EncryptedOut, const Byte * a_PlainIn, size_t a_Length); - - /** Returns true if the object has been initialized with the Key / IV */ - bool IsValid(void) const { return m_IsValid; } - -protected: - aes_context m_Aes; - - /** The InitialVector, used by the CFB mode encryption */ - Byte m_IV[16]; - - /** Current offset in the m_IV, used by the CFB mode encryption */ - size_t m_IVOffset; - - /** Indicates whether the object has been initialized with the Key / IV */ - bool m_IsValid; -} ; - - - - - -/** Calculates a SHA1 checksum for data stream */ -class cSHA1Checksum -{ -public: - typedef Byte Checksum[20]; // The type used for storing the checksum - - cSHA1Checksum(void); - - /** Adds the specified data to the checksum */ - void Update(const Byte * a_Data, size_t a_Length); - - /** Calculates and returns the final checksum */ - void Finalize(Checksum & a_Output); - - /** Returns true if the object is accepts more input data, false if Finalize()-d (need to Restart()) */ - bool DoesAcceptInput(void) const { return m_DoesAcceptInput; } - - /** Converts a raw 160-bit SHA1 digest into a Java Hex representation - According to http://wiki.vg/wiki/index.php?title=Protocol_Encryption&oldid=2802 - */ - static void DigestToJava(const Checksum & a_Digest, AString & a_JavaOut); - - /** Clears the current context and start a new checksum calculation */ - void Restart(void); - -protected: - /** True if the object is accepts more input data, false if Finalize()-d (need to Restart()) */ - bool m_DoesAcceptInput; - - sha1_context m_Sha1; -} ; - - - - |