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

Go to the source code of this file.

Functions

int botan_block_cipher_block_size (botan_block_cipher_t bc)
 
int botan_block_cipher_clear (botan_block_cipher_t bc)
 
int botan_block_cipher_decrypt_blocks (botan_block_cipher_t bc, const uint8_t in[], uint8_t out[], size_t blocks)
 
int botan_block_cipher_destroy (botan_block_cipher_t bc)
 
int botan_block_cipher_encrypt_blocks (botan_block_cipher_t bc, const uint8_t in[], uint8_t out[], size_t blocks)
 
int botan_block_cipher_get_keyspec (botan_block_cipher_t cipher, size_t *out_minimum_keylength, size_t *out_maximum_keylength, size_t *out_keylength_modulo)
 
int botan_block_cipher_init (botan_block_cipher_t *bc, const char *bc_name)
 
int botan_block_cipher_name (botan_block_cipher_t cipher, char *name, size_t *name_len)
 
int botan_block_cipher_set_key (botan_block_cipher_t bc, const uint8_t key[], size_t len)
 
 BOTAN_FFI_DECLARE_STRUCT (botan_block_cipher_struct, Botan::BlockCipher, 0x64C29716)
 

Function Documentation

◆ botan_block_cipher_block_size()

int botan_block_cipher_block_size ( botan_block_cipher_t  bc)

Return the positive block size of this block cipher, or negative to indicate an error

Definition at line 62 of file ffi_block.cpp.

References BOTAN_FFI_DO.

63  {
64  return BOTAN_FFI_DO(Botan::BlockCipher, bc, b,
65  { return static_cast<int>(b.block_size()); });
66  }
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ botan_block_cipher_clear()

int botan_block_cipher_clear ( botan_block_cipher_t  bc)

Reinitializes the block cipher

Returns
0 on success, a negative value on failure

Definition at line 42 of file ffi_block.cpp.

References BOTAN_FFI_DO, and Botan::SymmetricAlgorithm::clear().

43  {
44  return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.clear(); });
45  }
virtual void clear()=0
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ botan_block_cipher_decrypt_blocks()

int botan_block_cipher_decrypt_blocks ( botan_block_cipher_t  bc,
const uint8_t  in[],
uint8_t  out[],
size_t  blocks 
)

Decrypt one or more blocks with the cipher

Definition at line 78 of file ffi_block.cpp.

References BOTAN_FFI_DO, BOTAN_FFI_ERROR_NULL_POINTER, and Botan::BlockCipher::decrypt_n().

82  {
83  if(in == nullptr || out == nullptr)
85  return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.decrypt_n(in, out, blocks); });
86  }
virtual void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ botan_block_cipher_destroy()

int botan_block_cipher_destroy ( botan_block_cipher_t  bc)

Destroy a block cipher object

Definition at line 37 of file ffi_block.cpp.

References BOTAN_FFI_CHECKED_DELETE.

38  {
39  return BOTAN_FFI_CHECKED_DELETE(bc);
40  }
#define BOTAN_FFI_CHECKED_DELETE(o)
Definition: ffi_util.h:120

◆ botan_block_cipher_encrypt_blocks()

int botan_block_cipher_encrypt_blocks ( botan_block_cipher_t  bc,
const uint8_t  in[],
uint8_t  out[],
size_t  blocks 
)

Encrypt one or more blocks with the cipher

Definition at line 68 of file ffi_block.cpp.

References BOTAN_FFI_DO, BOTAN_FFI_ERROR_NULL_POINTER, and Botan::BlockCipher::encrypt_n().

72  {
73  if(in == nullptr || out == nullptr)
75  return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.encrypt_n(in, out, blocks); });
76  }
virtual void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ botan_block_cipher_get_keyspec()

int botan_block_cipher_get_keyspec ( botan_block_cipher_t  cipher,
size_t *  out_minimum_keylength,
size_t *  out_maximum_keylength,
size_t *  out_keylength_modulo 
)

Get the key length limits of this block cipher

Parameters
cipherthe object to read
out_minimum_keylengthif non-NULL, will be set to minimum keylength of cipher
out_maximum_keylengthif non-NULL, will be set to maximum keylength of cipher
out_keylength_moduloif non-NULL will be set to byte multiple of valid keys

Definition at line 97 of file ffi_block.cpp.

References BOTAN_FFI_DO, and Botan::SymmetricAlgorithm::minimum_keylength().

101  {
102  return BOTAN_FFI_DO(Botan::BlockCipher, cipher, bc, {
103  if(out_minimum_keylength)
104  *out_minimum_keylength = bc.minimum_keylength();
105  if(out_maximum_keylength)
106  *out_maximum_keylength = bc.maximum_keylength();
107  if(out_keylength_modulo)
108  *out_keylength_modulo = bc.key_spec().keylength_multiple();
109  });
110  }
size_t minimum_keylength() const
Definition: sym_algo.h:46
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ botan_block_cipher_init()

int botan_block_cipher_init ( botan_block_cipher_t bc,
const char *  cipher_name 
)

Initialize a block cipher object

Definition at line 17 of file ffi_block.cpp.

References BOTAN_FFI_ERROR_NOT_IMPLEMENTED, BOTAN_FFI_ERROR_NULL_POINTER, BOTAN_FFI_SUCCESS, Botan::BlockCipher::create(), and Botan_FFI::ffi_guard_thunk().

18  {
19  return ffi_guard_thunk(__func__, [=]() -> int {
20  if(bc == nullptr || bc_name == nullptr || *bc_name == 0)
22 
23  *bc = nullptr;
24 
25  std::unique_ptr<Botan::BlockCipher> cipher(Botan::BlockCipher::create(bc_name));
26  if(cipher == nullptr)
28 
29  *bc = new botan_block_cipher_struct(cipher.release());
30  return BOTAN_FFI_SUCCESS;
31  });
32  }
int ffi_guard_thunk(const char *func_name, std::function< int()> thunk)
Definition: ffi.cpp:86
static std::unique_ptr< BlockCipher > create(const std::string &algo_spec, const std::string &provider="")

◆ botan_block_cipher_name()

int botan_block_cipher_name ( botan_block_cipher_t  cipher,
char *  name,
size_t *  name_len 
)

Get the name of this block cipher

Parameters
cipherthe object to read
nameoutput buffer
name_lenon input, the length of buffer, on success the number of bytes written

Definition at line 88 of file ffi_block.cpp.

References BOTAN_FFI_DO, BOTAN_FFI_ERROR_NULL_POINTER, name, and Botan_FFI::write_str_output().

89  {
90  if(name_len == nullptr)
92 
93  return BOTAN_FFI_DO(Botan::BlockCipher, cipher, bc, {
94  return write_str_output(name, name_len, bc.name()); });
95  }
int write_str_output(uint8_t out[], size_t *out_len, const std::string &str)
Definition: ffi_util.h:151
std::string name
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ botan_block_cipher_set_key()

int botan_block_cipher_set_key ( botan_block_cipher_t  bc,
const uint8_t  key[],
size_t  len 
)

Set the key for a block cipher instance

Definition at line 50 of file ffi_block.cpp.

References BOTAN_FFI_DO, BOTAN_FFI_ERROR_NULL_POINTER, and Botan::SymmetricAlgorithm::set_key().

52  {
53  if(key == nullptr)
55  return BOTAN_FFI_DO(Botan::BlockCipher, bc, b, { b.set_key(key, len); });
56  }
void set_key(const SymmetricKey &key)
Definition: sym_algo.h:65
#define BOTAN_FFI_DO(T, obj, param, block)
Definition: ffi_util.h:92

◆ BOTAN_FFI_DECLARE_STRUCT()

BOTAN_FFI_DECLARE_STRUCT ( botan_block_cipher_struct  ,
Botan::BlockCipher  ,
0x64C29716   
)