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-rw-r--r--src/mbedTLS++/CtrDrbgContext.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/src/mbedTLS++/CtrDrbgContext.h b/src/mbedTLS++/CtrDrbgContext.h
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+
+// CtrDrbgContext.h
+
+// Declares the cCtrDrbgContext class representing a wrapper over CTR-DRBG implementation in mbedTLS
+
+
+
+
+
+#pragma once
+
+#include "mbedtls/ctr_drbg.h"
+
+
+
+
+
+// fwd: EntropyContext.h
+class cEntropyContext;
+
+
+
+
+
+class cCtrDrbgContext
+{
+ friend class cSslConfig;
+ friend class cRsaPrivateKey;
+ friend class cCryptoKey;
+
+public:
+ /** Constructs the context with a new entropy context. */
+ cCtrDrbgContext(void);
+
+ /** Constructs the context with the specified entropy context. */
+ cCtrDrbgContext(const std::shared_ptr<cEntropyContext> & a_EntropyContext);
+
+ /** Initializes the context.
+ a_Custom is optional additional data to use for entropy, nullptr is accepted.
+ Returns 0 if successful, mbedTLS error code on failure. */
+ int Initialize(const void * a_Custom, size_t a_CustomSize);
+
+ /** Returns true if the object is valid (has been initialized properly) */
+ bool IsValid(void) const { return m_IsValid; }
+
+protected:
+ /** The entropy source used for generating the random */
+ std::shared_ptr<cEntropyContext> m_EntropyContext;
+
+ /** The random generator context */
+ mbedtls_ctr_drbg_context m_CtrDrbg;
+
+ /** Set to true if the object is valid (has been initialized properly) */
+ bool m_IsValid;
+
+
+ /** Returns the internal context ptr. Only use in mbedTLS API calls. */
+ mbedtls_ctr_drbg_context * GetInternal(void) { return &m_CtrDrbg; }
+} ;
+
+
+
+