qcrypto_cipher_args_t
Cipher algorithm arguments
Synopsis:
#include <qcrypto/qcrypto.h>
typedef struct {
qcrypto_cipher_action_t action;
const uint8_t* iv;
size_t ivsize;
qcrypto_cipher_padding_t padding;
union {
union {
struct {
size_t unitsize;
} xts;
struct {
size_t tagsize;
const uint8_t *tag;
} gcm;
struct {
size_t tagsize;
const uint8_t *tag;
size_t inputsize;
size_t aadsize;
} ccm;
struct {
size_t tagsize;
const uint8_t *tag;
} ocb;
} aes;
struct {
size_t tagsize;
const uint8_t *tag;
} chacha20_poly1305;
struct {
const uint32_t counter;
} chacha20;
void *private;
};
} qcrypto_cipher_args_t;Data:
- qcrypto_cipher_action_t action
The cipher action (encryption or decryption).
- uint8_t* iv
The initialization vector (IV) buffer.
- size_t ivsize
The IV size.
- qcrypto_cipher_padding_t padding
The padding mode.
- size_t unitsize
The unit size (usually the block size). Maximum is 16 MiB.
- size_t tagsize
The tag (or MAC) size.
- uint8_t *tag
The decryption tag.
- size_t inputsize
The plaintext or ciphertext size.
- size_t aadsize
The AAD size.
- uint8_t counter
The block counter.
- void* private
Private arguments to pass for other types of ciphers.
Library:
libqcryptoDescription:
The arguments are organized based on the algorithm name. Some modes of operation require extra parameters to set up the algorithm.
The private field can be used for custom plugins that implement custom
algorithms that the QNX cryptography library API does not support.
The padding value can only be a value other than QCRYPTO_CIPHER_PADDING_NONE if the cipher is a block cipher; otherwise, an error is returned. See qcrypto_cipher_padding_t.
For more information, see qcrypto_cipher_init().