ffi_hotp.cpp File Reference

#include <botan/ffi.h>
#include <botan/internal/ffi_util.h>

Go to the source code of this file.

Functions
int	botan_hotp_check (botan_hotp_t hotp, uint64_t *next_hotp_counter, uint32_t hotp_code, uint64_t hotp_counter, size_t resync_range)
int	botan_hotp_destroy (botan_hotp_t hotp)
int	botan_hotp_generate (botan_hotp_t hotp, uint32_t *hotp_code, uint64_t hotp_counter)
int	botan_hotp_init (botan_hotp_t *hotp, const uint8_t key[], size_t key_len, const char *hash_algo, size_t digits)

Function Documentation

botan_hotp_check()

int botan_hotp_check	(	botan_hotp_t	hotp,
		uint64_t *	next_hotp_counter,
		uint32_t	hotp_code,
		uint64_t	hotp_counter,
		size_t	resync_range
	)

Verify a HOTP code

Definition at line 68 of file ffi_hotp.cpp.

                                                                                                                   {
#if defined(BOTAN_HAS_HOTP)
   return BOTAN_FFI_VISIT(hotp, [=](auto& h) {
      auto resp = h.verify_hotp(hotp_code, hotp_counter, resync_range);
 
      if(next_hotp_counter)
         *next_hotp_counter = resp.second;
 
      return (resp.first == true) ? BOTAN_FFI_SUCCESS : BOTAN_FFI_INVALID_VERIFIER;
   });
 
#else
   BOTAN_UNUSED(hotp, next_hotp_counter, hotp_code, hotp_counter, resync_range);
   return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_INVALID_VERIFIER, BOTAN_FFI_SUCCESS, BOTAN_FFI_VISIT, and BOTAN_UNUSED.

botan_hotp_destroy()

int botan_hotp_destroy

(

botan_hotp_t

hotp

)

Destroy a HOTP instance

Returns

0 if success, error if invalid object handle

Definition at line 45 of file ffi_hotp.cpp.

                                          {
#if defined(BOTAN_HAS_HOTP)
   return BOTAN_FFI_CHECKED_DELETE(hotp);
#else
   BOTAN_UNUSED(hotp);
   return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}

References BOTAN_FFI_CHECKED_DELETE, BOTAN_FFI_ERROR_NOT_IMPLEMENTED, and BOTAN_UNUSED.

botan_hotp_generate()

int botan_hotp_generate	(	botan_hotp_t	hotp,
		uint32_t *	hotp_code,
		uint64_t	hotp_counter
	)

Generate a HOTP code for the provided counter

Definition at line 54 of file ffi_hotp.cpp.

                                                                                       {
#if defined(BOTAN_HAS_HOTP)
   if(hotp == nullptr || hotp_code == nullptr) {
      return BOTAN_FFI_ERROR_NULL_POINTER;
   }
 
   return BOTAN_FFI_VISIT(hotp, [=](auto& h) { *hotp_code = h.generate_hotp(hotp_counter); });
 
#else
   BOTAN_UNUSED(hotp, hotp_code, hotp_counter);
   return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_ERROR_NULL_POINTER, BOTAN_FFI_VISIT, and BOTAN_UNUSED.

botan_hotp_init()

int botan_hotp_init	(	botan_hotp_t *	hotp,
		const uint8_t	key[],
		size_t	key_len,
		const char *	hash_algo,
		size_t	digits
	)

Initialize a HOTP instance

Definition at line 25 of file ffi_hotp.cpp.

                                                                                                                   {
   if(hotp == nullptr || key == nullptr || hash_algo == nullptr) {
      return BOTAN_FFI_ERROR_NULL_POINTER;
   }
 
   *hotp = nullptr;
 
#if defined(BOTAN_HAS_HOTP)
   return ffi_guard_thunk(__func__, [=]() -> int {
      auto otp = std::make_unique<Botan::HOTP>(key, key_len, hash_algo, digits);
      *hotp = new botan_hotp_struct(std::move(otp));
 
      return BOTAN_FFI_SUCCESS;
   });
#else
   BOTAN_UNUSED(hotp, key, key_len, hash_algo, digits);
   return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_ERROR_NULL_POINTER, BOTAN_FFI_SUCCESS, BOTAN_UNUSED, and Botan_FFI::ffi_guard_thunk().