ffi_keywrap.cpp File Reference

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

Go to the source code of this file.

Functions
int	botan_key_unwrap3394 (const uint8_t wrapped_key[], size_t wrapped_key_len, const uint8_t kek[], size_t kek_len, uint8_t key[], size_t *key_len)
int	botan_key_wrap3394 (const uint8_t key[], size_t key_len, const uint8_t kek[], size_t kek_len, uint8_t wrapped_key[], size_t *wrapped_key_len)

Function Documentation

int botan_key_unwrap3394	(	const uint8_t	wrapped_key[],
		size_t	wrapped_key_len,
		const uint8_t	kek[],
		size_t	kek_len,
		uint8_t	key[],
		size_t *	key_len
	)

Definition at line 34 of file ffi_keywrap.cpp.

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, Botan_FFI::ffi_guard_thunk(), Botan::rfc3394_keyunwrap(), and Botan_FFI::write_vec_output().

   {
#if defined(BOTAN_HAS_RFC3394_KEYWRAP)
   return ffi_guard_thunk(__func__, [=]() -> int {
      const Botan::SymmetricKey kek_sym(kek, kek_len);
      const Botan::secure_vector<uint8_t> key_ct(wrapped_key, wrapped_key + wrapped_key_len);
      const Botan::secure_vector<uint8_t> key_pt = Botan::rfc3394_keyunwrap(key_ct, kek_sym);
      return write_vec_output(key, key_len, key_pt);
      });
#else
   return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
   }

int botan_key_wrap3394	(	const uint8_t	key[],
		size_t	key_len,
		const uint8_t	kek[],
		size_t	kek_len,
		uint8_t	wrapped_key[],
		size_t *	wrapped_key_len
	)

Key wrapping as per RFC 3394

Definition at line 18 of file ffi_keywrap.cpp.

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, Botan_FFI::ffi_guard_thunk(), Botan::rfc3394_keywrap(), and Botan_FFI::write_vec_output().

   {
#if defined(BOTAN_HAS_RFC3394_KEYWRAP)
   return ffi_guard_thunk(__func__, [=]() -> int {
      const Botan::SymmetricKey kek_sym(kek, kek_len);
      const Botan::secure_vector<uint8_t> key_pt(key, key + key_len);
      const Botan::secure_vector<uint8_t> key_ct = Botan::rfc3394_keywrap(key_pt, kek_sym);
      return write_vec_output(wrapped_key, wrapped_key_len, key_ct);
      });
#else
   return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
   }