diff options
Diffstat (limited to 'cipher/cipher-internal.h')
| -rw-r--r-- | cipher/cipher-internal.h | 93 |
1 files changed, 48 insertions, 45 deletions
diff --git a/cipher/cipher-internal.h b/cipher/cipher-internal.h index 262ca902..a2d0e5c7 100644 --- a/cipher/cipher-internal.h +++ b/cipher/cipher-internal.h @@ -100,6 +100,51 @@ typedef unsigned int (*ghash_fn_t) (gcry_cipher_hd_t c, byte *result, const byte *buf, size_t nblocks); +/* A structure with function pointers for mode operations. */ +typedef struct cipher_mode_ops +{ + gcry_err_code_t (*encrypt)(gcry_cipher_hd_t c, unsigned char *outbuf, + size_t outbuflen, const unsigned char *inbuf, + size_t inbuflen); + gcry_err_code_t (*decrypt)(gcry_cipher_hd_t c, unsigned char *outbuf, + size_t outbuflen, const unsigned char *inbuf, + size_t inbuflen); + gcry_err_code_t (*setiv)(gcry_cipher_hd_t c, const unsigned char *iv, + size_t ivlen); + + gcry_err_code_t (*authenticate)(gcry_cipher_hd_t c, + const unsigned char *abuf, size_t abuflen); + gcry_err_code_t (*get_tag)(gcry_cipher_hd_t c, unsigned char *outtag, + size_t taglen); + gcry_err_code_t (*check_tag)(gcry_cipher_hd_t c, const unsigned char *intag, + size_t taglen); +} cipher_mode_ops_t; + + +/* A structure with function pointers for bulk operations. The cipher + algorithm setkey function initializes them when bulk operations are + available and the actual encryption routines use them if they are + not NULL. */ +typedef struct cipher_bulk_ops +{ + void (*cfb_enc)(void *context, unsigned char *iv, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks); + void (*cfb_dec)(void *context, unsigned char *iv, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks); + void (*cbc_enc)(void *context, unsigned char *iv, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks, int cbc_mac); + void (*cbc_dec)(void *context, unsigned char *iv, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks); + void (*ctr_enc)(void *context, unsigned char *iv, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks); + size_t (*ocb_crypt)(gcry_cipher_hd_t c, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks, int encrypt); + size_t (*ocb_auth)(gcry_cipher_hd_t c, const void *abuf_arg, size_t nblocks); + void (*xts_crypt)(void *context, unsigned char *tweak, void *outbuf_arg, + const void *inbuf_arg, size_t nblocks, int encrypt); +} cipher_bulk_ops_t; + + /* A VIA processor with the Padlock engine as well as the Intel AES_NI instructions require an alignment of most data on a 16 byte boundary. Because we trick out the compiler while allocating the @@ -150,54 +195,12 @@ struct gcry_cipher_handle int algo; /* A structure with function pointers for mode operations. */ - struct { - gcry_err_code_t (*encrypt)(gcry_cipher_hd_t c, - unsigned char *outbuf, size_t outbuflen, - const unsigned char *inbuf, size_t inbuflen); - gcry_err_code_t (*decrypt)(gcry_cipher_hd_t c, - unsigned char *outbuf, size_t outbuflen, - const unsigned char *inbuf, size_t inbuflen); - gcry_err_code_t (*setiv)(gcry_cipher_hd_t c, const unsigned char *iv, - size_t ivlen); - - gcry_err_code_t (*authenticate)(gcry_cipher_hd_t c, - const unsigned char *abuf, size_t abuflen); - gcry_err_code_t (*get_tag)(gcry_cipher_hd_t c, unsigned char *outtag, - size_t taglen); - gcry_err_code_t (*check_tag)(gcry_cipher_hd_t c, const unsigned char *intag, - size_t taglen); - } mode_ops; + cipher_mode_ops_t mode_ops; /* A structure with function pointers for bulk operations. Due to limitations of the module system (we don't want to change the - API) we need to keep these function pointers here. The cipher - open function initializes them and the actual encryption routines - use them if they are not NULL. */ - struct { - void (*cfb_enc)(void *context, unsigned char *iv, - void *outbuf_arg, const void *inbuf_arg, - size_t nblocks); - void (*cfb_dec)(void *context, unsigned char *iv, - void *outbuf_arg, const void *inbuf_arg, - size_t nblocks); - void (*cbc_enc)(void *context, unsigned char *iv, - void *outbuf_arg, const void *inbuf_arg, - size_t nblocks, int cbc_mac); - void (*cbc_dec)(void *context, unsigned char *iv, - void *outbuf_arg, const void *inbuf_arg, - size_t nblocks); - void (*ctr_enc)(void *context, unsigned char *iv, - void *outbuf_arg, const void *inbuf_arg, - size_t nblocks); - size_t (*ocb_crypt)(gcry_cipher_hd_t c, void *outbuf_arg, - const void *inbuf_arg, size_t nblocks, int encrypt); - size_t (*ocb_auth)(gcry_cipher_hd_t c, const void *abuf_arg, - size_t nblocks); - void (*xts_crypt)(void *context, unsigned char *tweak, - void *outbuf_arg, const void *inbuf_arg, - size_t nblocks, int encrypt); - } bulk; - + API) we need to keep these function pointers here. */ + cipher_bulk_ops_t bulk; int mode; unsigned int flags; |