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      1 
      2 #include <string.h>
      3 
      4 #include "crypto_hash_sha512.h"
      5 #include "crypto_sign_ed25519.h"
      6 #include "ref10/sign_ed25519_ref10.h"
      7 
      8 size_t
      9 crypto_sign_ed25519ph_statebytes(void)
     10 {
     11     return sizeof(crypto_sign_ed25519ph_state);
     12 }
     13 
     14 size_t
     15 crypto_sign_ed25519_bytes(void)
     16 {
     17     return crypto_sign_ed25519_BYTES;
     18 }
     19 
     20 size_t
     21 crypto_sign_ed25519_seedbytes(void)
     22 {
     23     return crypto_sign_ed25519_SEEDBYTES;
     24 }
     25 
     26 size_t
     27 crypto_sign_ed25519_publickeybytes(void)
     28 {
     29     return crypto_sign_ed25519_PUBLICKEYBYTES;
     30 }
     31 
     32 size_t
     33 crypto_sign_ed25519_secretkeybytes(void)
     34 {
     35     return crypto_sign_ed25519_SECRETKEYBYTES;
     36 }
     37 
     38 size_t
     39 crypto_sign_ed25519_messagebytes_max(void)
     40 {
     41     return crypto_sign_ed25519_MESSAGEBYTES_MAX;
     42 }
     43 
     44 int
     45 crypto_sign_ed25519_sk_to_seed(unsigned char *seed, const unsigned char *sk)
     46 {
     47     memmove(seed, sk, crypto_sign_ed25519_SEEDBYTES);
     48 
     49     return 0;
     50 }
     51 
     52 int
     53 crypto_sign_ed25519_sk_to_pk(unsigned char *pk, const unsigned char *sk)
     54 {
     55     memmove(pk, sk + crypto_sign_ed25519_SEEDBYTES,
     56             crypto_sign_ed25519_PUBLICKEYBYTES);
     57     return 0;
     58 }
     59 
     60 int
     61 crypto_sign_ed25519ph_init(crypto_sign_ed25519ph_state *state)
     62 {
     63     crypto_hash_sha512_init(&state->hs);
     64     return 0;
     65 }
     66 
     67 int
     68 crypto_sign_ed25519ph_update(crypto_sign_ed25519ph_state *state,
     69                              const unsigned char *m, unsigned long long mlen)
     70 {
     71     return crypto_hash_sha512_update(&state->hs, m, mlen);
     72 }
     73 
     74 int
     75 crypto_sign_ed25519ph_final_create(crypto_sign_ed25519ph_state *state,
     76                                    unsigned char               *sig,
     77                                    unsigned long long          *siglen_p,
     78                                    const unsigned char         *sk)
     79 {
     80     unsigned char ph[crypto_hash_sha512_BYTES];
     81 
     82     crypto_hash_sha512_final(&state->hs, ph);
     83 
     84     return _crypto_sign_ed25519_detached(sig, siglen_p, ph, sizeof ph, sk, 1);
     85 }
     86 
     87 int
     88 crypto_sign_ed25519ph_final_verify(crypto_sign_ed25519ph_state *state,
     89                                    unsigned char               *sig,
     90                                    const unsigned char         *pk)
     91 {
     92     unsigned char ph[crypto_hash_sha512_BYTES];
     93 
     94     crypto_hash_sha512_final(&state->hs, ph);
     95 
     96     return _crypto_sign_ed25519_verify_detached(sig, ph, sizeof ph, pk, 1);
     97 }
     98