Line data    Source code

       1             : #include "fd_keyguard_bls.h"
       2             : #include "../../ballet/ed25519/fd_ed25519.h"
       3             : 
       4             : void FD_FN_SENSITIVE
       5             : fd_keyguard_bls_key_derive( fd_keyguard_bls_key_t * key,
       6             :                             uchar const             ed25519_public_key[ static 32 ],
       7             :                             uchar const             ed25519_private_key[ static 32 ],
       8           0 :                             fd_sha512_t *           sha ) {
       9           0 :   uchar check_public_key[ 32 ];
      10           0 :   fd_ed25519_public_from_private( check_public_key, ed25519_private_key, sha );
      11           0 :   if( FD_UNLIKELY( memcmp( check_public_key, ed25519_public_key, 32UL ) ) )
      12           0 :     FD_LOG_EMERG(( "The public key in the key file does not match the public key derived from the private key. "
      13           0 :                    "Firedancer will not use the key pair to sign as it might leak the private key." ));
      14             : 
      15           0 :   static char const derive_msg[] = "bls-key-derive-alpenglow";
      16             : 
      17           0 :   uchar ikm[ FD_ED25519_SIG_SZ ];
      18           0 :   fd_ed25519_sign( ikm, (uchar const *)derive_msg, sizeof(derive_msg)-1UL, ed25519_public_key, ed25519_private_key, sha );
      19           0 :   fd_bls_sec_derive( &key->secret_key, ikm, sizeof(ikm) );
      20           0 :   fd_memzero_explicit( ikm, sizeof(ikm) );
      21             : 
      22           0 :   fd_bls_pub_t public_key[1];
      23           0 :   fd_bls_sec_to_pub( &key->secret_key, public_key );
      24           0 :   blst_p1_affine_compress( key->public_key, public_key );
      25           0 : }