bbs.h

Go to the documentation of this file.

 
#ifndef BBS_H
#define BBS_H
 
#include <stdint.h>
#include <stdarg.h>
 
#define BBS_SK_LEN                     32
 
#define BBS_PK_LEN                     96
 
#define BBS_SIG_LEN                    80
 
#define BBS_PROOF_BASE_LEN             272
 
#define BBS_PROOF_UD_ELEM_LEN          32
 
#define BBS_PROOF_LEN(num_undisclosed) (BBS_PROOF_BASE_LEN + num_undisclosed * BBS_PROOF_UD_ELEM_LEN \
                    )
 
#define BBS_OK    0
 
#define BBS_ERROR 1
 
typedef uint8_t  bbs_secret_key[BBS_SK_LEN];
 
typedef uint8_t  bbs_public_key[BBS_PK_LEN];
 
typedef uint8_t  bbs_signature[BBS_SIG_LEN];
 
typedef struct bbs_cipher_suite bbs_cipher_suite_t;
 
int
bbs_init (void);
 
 
int
bbs_deinit (void);
 
// Key Generation
 
int bbs_keygen_full (
    bbs_cipher_suite_t *cipher_suite,
    bbs_secret_key      sk,
    bbs_public_key      pk
    );
 
 
int bbs_keygen (
    bbs_cipher_suite_t *cipher_suite,
    bbs_secret_key      sk,
    const uint8_t      *key_material,
    uint16_t            key_material_len,
    const uint8_t      *key_info,
    uint16_t            key_info_len,
    const uint8_t      *key_dst,
    uint8_t             key_dst_len
    );
 
int bbs_sk_to_pk (
    bbs_cipher_suite_t   *cipher_suite,
    const bbs_secret_key  sk,
    bbs_public_key        pk
    );
 
int bbs_sign (
    bbs_cipher_suite_t   *cipher_suite,
    const bbs_secret_key  sk,
    const bbs_public_key  pk,
    bbs_signature         signature,
    const uint8_t        *header,
    uint64_t              header_len,
    uint64_t              num_messages,
    ...
    );
 
int bbs_verify (
    bbs_cipher_suite_t   *cipher_suite,
    const bbs_public_key  pk,
    const bbs_signature   signature,
    const uint8_t        *header,
    uint64_t              header_len,
    uint64_t              num_messages,
    ...
    );
 
int bbs_proof_gen (
    bbs_cipher_suite_t   *cipher_suite,
    const bbs_public_key  pk,
    const bbs_signature   signature,
    uint8_t              *proof,
    const uint8_t        *header,
    uint64_t              header_len,
    const uint8_t        *presentation_header,
    uint64_t              presentation_header_len,
    const uint64_t       *disclosed_indexes,
    uint64_t              disclosed_indexes_len,
    uint64_t              num_messages,
    ...
    );
 
int bbs_proof_verify (
    bbs_cipher_suite_t   *cipher_suite,
    const bbs_public_key  pk,
    const uint8_t        *proof,
    uint64_t              proof_len,
    const uint8_t        *header,
    uint64_t              header_len,
    const uint8_t        *presentation_header,
    uint64_t              presentation_header_len,
    const uint64_t       *disclosed_indexes,
    uint64_t              disclosed_indexes_len,
    uint64_t              num_messages,
    ...
    );
 
extern bbs_cipher_suite_t *bbs_sha256_cipher_suite;
 
#define bbs_sha256_keygen_full(...)  bbs_keygen_full(bbs_sha256_cipher_suite,__VA_ARGS__)
 
#define bbs_sha256_keygen(...)       bbs_keygen(bbs_sha256_cipher_suite,__VA_ARGS__)
 
#define bbs_sha256_sk_to_pk(...)     bbs_sk_to_pk(bbs_sha256_cipher_suite,__VA_ARGS__)
 
#define bbs_sha256_sign(...)         bbs_sign(bbs_sha256_cipher_suite,__VA_ARGS__)
 
#define bbs_sha256_verify(...)       bbs_verify(bbs_sha256_cipher_suite,__VA_ARGS__)
 
#define bbs_sha256_proof_gen(...)    bbs_proof_gen(bbs_sha256_cipher_suite,__VA_ARGS__)
 
#define bbs_sha256_proof_verify(...) bbs_proof_verify(bbs_sha256_cipher_suite,__VA_ARGS__)
 
extern bbs_cipher_suite_t *bbs_shake256_cipher_suite;
 
#define bbs_shake256_keygen_full(...)  bbs_keygen_full(bbs_shake256_cipher_suite,__VA_ARGS__)
#define bbs_shake256_keygen(...)       bbs_keygen(bbs_shake256_cipher_suite,__VA_ARGS__)
 
#define bbs_shake256_sk_to_pk(...)     bbs_sk_to_pk(bbs_shake256_cipher_suite,__VA_ARGS__)
 
#define bbs_shake256_sign(...)         bbs_sign(bbs_shake256_cipher_suite,__VA_ARGS__)
 
#define bbs_shake256_verify(...)       bbs_verify(bbs_shake256_cipher_suite,__VA_ARGS__)
 
#define bbs_shake256_proof_gen(...)    bbs_proof_gen(bbs_shake256_cipher_suite,__VA_ARGS__)
 
#define bbs_shake256_proof_verify(...) bbs_proof_verify(bbs_shake256_cipher_suite,__VA_ARGS__)
 
#endif