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/*
* cryptoapi.h: Windows Crypto API functions defined in PuTTY that
* use the crypt32 library. Also centralises the machinery for
* dynamically loading that library, and our own functions using that
* in turn.
*/
DECL_WINDOWS_FUNCTION(extern, BOOL, CryptProtectMemory, (LPVOID,DWORD,DWORD));
bool got_crypt(void);
/*
* Function to obfuscate an input string into something usable as a
* pathname for a Windows named pipe. Uses CryptProtectMemory to make
* the obfuscation depend on a key Windows stores for the owning user,
* and then hashes the string as well to make it have a manageable
* length and be composed of filename-legal characters.
*
* Rationale: Windows's named pipes all live in the same namespace, so
* one user can see what pipes another user has open. This is an
* undesirable privacy leak: in particular, if we used unobfuscated
* names for the connection-sharing pipe names, it would permit one
* user to know what username@host another user is SSHing to.
*
* The returned string is dynamically allocated.
*/
char *capi_obfuscate_string(const char *realname);
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