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+
+// CryptoKey.h
+
+// Declares the cCryptoKey class representing a RSA public key in PolarSSL
+
+
+
+
+
+#pragma once
+
+#include "CtrDrbgContext.h"
+#include "polarssl/pk.h"
+
+
+
+
+
+class cCryptoKey
+{
+ friend class cSslContext;
+
+public:
+ /** Constructs an empty key instance. Before use, it needs to be filled by ParsePublic() or ParsePrivate() */
+ cCryptoKey(void);
+
+ /** Constructs the public key out of the DER- or PEM-encoded pubkey data */
+ cCryptoKey(const AString & a_PublicKeyData);
+
+ /** Constructs the private key out of the DER- or PEM-encoded privkey data, with the specified password.
+ If a_Password is empty, no password is assumed. */
+ cCryptoKey(const AString & a_PrivateKeyData, const AString & a_Password);
+
+ ~cCryptoKey();
+
+ /** 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);
+
+ /** Parses the specified data into a public key representation.
+ The key can be DER- or PEM-encoded.
+ Returns 0 on success, PolarSSL error code on failure. */
+ int ParsePublic(const void * a_Data, size_t a_NumBytes);
+
+ /** Parses the specified data into a private key representation.
+ If a_Password is empty, no password is assumed.
+ The key can be DER- or PEM-encoded.
+ Returns 0 on success, PolarSSL error code on failure. */
+ int ParsePrivate(const void * a_Data, size_t a_NumBytes, const AString & a_Password);
+
+ /** Returns true if the contained key is valid. */
+ bool IsValid(void) const;
+
+protected:
+ /** The PolarSSL representation of the key data */
+ pk_context m_Pk;
+
+ /** The random generator used in encryption and decryption */
+ cCtrDrbgContext m_CtrDrbg;
+
+
+ /** Returns the internal context ptr. Only use in PolarSSL API calls. */
+ pk_context * GetInternal(void) { return &m_Pk; }
+} ;
+
+typedef SharedPtr<cCryptoKey> cCryptoKeyPtr;
+
+
+
+