77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
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// CryptoKey.h
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// Declares the cCryptoKey class representing a RSA public key in mbedTLS
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#pragma once
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#include "CtrDrbgContext.h"
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#include "mbedtls/pk.h"
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class cCryptoKey
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{
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friend class cSslConfig;
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public:
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/** Constructs an empty key instance. Before use, it needs to be filled by ParsePublic() or ParsePrivate() */
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cCryptoKey(void);
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/** Constructs the public key out of the DER- or PEM-encoded pubkey data */
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cCryptoKey(const AString & a_PublicKeyData);
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/** Constructs the private key out of the DER- or PEM-encoded privkey data, with the specified password.
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If a_Password is empty, no password is assumed. */
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cCryptoKey(const AString & a_PrivateKeyData, const AString & a_Password);
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~cCryptoKey();
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/** Decrypts the data using the stored public key
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Both a_EncryptedData and a_DecryptedData must be at least <KeySizeBytes> bytes large.
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Returns the number of bytes decrypted, or negative number for error. */
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int Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength);
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/** Encrypts the data using the stored public key
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Both a_EncryptedData and a_DecryptedData must be at least <KeySizeBytes> bytes large.
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Returns the number of bytes decrypted, or negative number for error. */
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int Encrypt(const Byte * a_PlainData, size_t a_PlainLength, Byte * a_EncryptedData, size_t a_EncryptedMaxLength);
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/** Parses the specified data into a public key representation.
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The key can be DER- or PEM-encoded.
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Returns 0 on success, mbedTLS error code on failure. */
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int ParsePublic(const void * a_Data, size_t a_NumBytes);
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/** Parses the specified data into a private key representation.
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If a_Password is empty, no password is assumed.
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The key can be DER- or PEM-encoded.
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Returns 0 on success, mbedTLS error code on failure. */
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int ParsePrivate(const void * a_Data, size_t a_NumBytes, const AString & a_Password);
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/** Returns true if the contained key is valid. */
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bool IsValid(void) const;
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protected:
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/** The mbedTLS representation of the key data */
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mbedtls_pk_context m_Pk;
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/** The random generator used in encryption and decryption */
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cCtrDrbgContext m_CtrDrbg;
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/** Returns the internal context ptr. Only use in mbedTLS API calls. */
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mbedtls_pk_context * GetInternal(void) { return &m_Pk; }
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} ;
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typedef std::shared_ptr<cCryptoKey> cCryptoKeyPtr;
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