Botan  2.12.1
Crypto and TLS for C++11
Functions
ffi_fpe.cpp File Reference
#include <botan/ffi.h>
#include <botan/internal/ffi_util.h>
#include <botan/internal/ffi_mp.h>
#include <memory>

Go to the source code of this file.

Functions

int botan_fpe_decrypt (botan_fpe_t fpe, botan_mp_t x, const uint8_t tweak[], size_t tweak_len)
 
int botan_fpe_destroy (botan_fpe_t fpe)
 
int botan_fpe_encrypt (botan_fpe_t fpe, botan_mp_t x, const uint8_t tweak[], size_t tweak_len)
 
int botan_fpe_fe1_init (botan_fpe_t *fpe, botan_mp_t n, const uint8_t key[], size_t key_len, size_t rounds, uint32_t flags)
 

Function Documentation

◆ botan_fpe_decrypt()

int botan_fpe_decrypt ( botan_fpe_t  fpe,
botan_mp_t  x,
const uint8_t  tweak[],
size_t  tweak_len 
)

Definition at line 80 of file ffi_fpe.cpp.

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_SUCCESS, Botan_FFI::ffi_guard_thunk(), and Botan_FFI::safe_get().

81  {
82 #if defined(BOTAN_HAS_FPE_FE1)
83  return ffi_guard_thunk(__func__, [=]() {
84  Botan::BigInt r = safe_get(fpe).decrypt(safe_get(x), tweak, tweak_len);
85  safe_get(x) = r;
86  return BOTAN_FFI_SUCCESS;
87  });
88 
89 #else
91 #endif
92  }
int ffi_guard_thunk(const char *func_name, std::function< int()> thunk)
Definition: ffi.cpp:86
T & safe_get(botan_struct< T, M > *p)
Definition: ffi_util.h:61

◆ botan_fpe_destroy()

int botan_fpe_destroy ( botan_fpe_t  fpe)
Returns
0 if success, error if invalid object handle

Definition at line 58 of file ffi_fpe.cpp.

References BOTAN_FFI_CHECKED_DELETE, and BOTAN_FFI_ERROR_NOT_IMPLEMENTED.

59  {
60 #if defined(BOTAN_HAS_FPE_FE1)
61  return BOTAN_FFI_CHECKED_DELETE(fpe);
62 #else
64 #endif
65  }
#define BOTAN_FFI_CHECKED_DELETE(o)
Definition: ffi_util.h:120

◆ botan_fpe_encrypt()

int botan_fpe_encrypt ( botan_fpe_t  fpe,
botan_mp_t  x,
const uint8_t  tweak[],
size_t  tweak_len 
)

Definition at line 67 of file ffi_fpe.cpp.

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_SUCCESS, Botan_FFI::ffi_guard_thunk(), and Botan_FFI::safe_get().

68  {
69 #if defined(BOTAN_HAS_FPE_FE1)
70  return ffi_guard_thunk(__func__, [=]() {
71  Botan::BigInt r = safe_get(fpe).encrypt(safe_get(x), tweak, tweak_len);
72  safe_get(x) = r;
73  return BOTAN_FFI_SUCCESS;
74  });
75 #else
77 #endif
78  }
int ffi_guard_thunk(const char *func_name, std::function< int()> thunk)
Definition: ffi.cpp:86
T & safe_get(botan_struct< T, M > *p)
Definition: ffi_util.h:61

◆ botan_fpe_fe1_init()

int botan_fpe_fe1_init ( botan_fpe_t fpe,
botan_mp_t  n,
const uint8_t  key[],
size_t  key_len,
size_t  rounds,
uint32_t  flags 
)

Definition at line 26 of file ffi_fpe.cpp.

References BOTAN_FFI_ERROR_BAD_FLAG, BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_ERROR_NULL_POINTER, BOTAN_FFI_SUCCESS, BOTAN_FPE_FLAG_FE1_COMPAT_MODE, Botan_FFI::ffi_guard_thunk(), Botan::PKCS11::flags(), and Botan_FFI::safe_get().

29  {
30 #if defined(BOTAN_HAS_FPE_FE1)
31 
32  return ffi_guard_thunk(__func__, [=]() {
33 
34  if(fpe == nullptr || key == nullptr)
36 
37  *fpe = nullptr;
38 
41 
42  const bool compat_mode = (flags & BOTAN_FPE_FLAG_FE1_COMPAT_MODE);
43 
44  std::unique_ptr<Botan::FPE_FE1> fpe_obj(
45  new Botan::FPE_FE1(safe_get(n), rounds, compat_mode));
46 
47  fpe_obj->set_key(key, key_len);
48 
49  *fpe = new botan_fpe_struct(fpe_obj.release());
50  return BOTAN_FFI_SUCCESS;
51  });
52 #else
53  *fpe = nullptr;
55 #endif
56  }
int ffi_guard_thunk(const char *func_name, std::function< int()> thunk)
Definition: ffi.cpp:86
Flags flags(Flag flags)
Definition: p11.h:858
#define BOTAN_FPE_FLAG_FE1_COMPAT_MODE
Definition: ffi.h:1701
T & safe_get(botan_struct< T, M > *p)
Definition: ffi_util.h:61