Function simplicity_sha256_confidential

src/simplicity/elements/ops.c:12–20

Add an 'confidential' value to be consumed by an ongoing SHA-256 evaluation. * If the 'confidential' value is blinded, then the 'evenPrefix' used if the y coordinate is even, * and the 'oddPrefix' is used if the y coordinate is odd. * If the 'confidential' value is explicit, then '0x01' is used as the prefix. * If the 'confidential' value is "NULL" then only '0x00' added. * * Precondition: N

 *               NULL != conf;
 */
void simplicity_sha256_confidential(unsigned char evenPrefix, unsigned char oddPrefix, sha256_context* ctx, const confidential* conf) {
  switch (conf->prefix) {
   case NONE: sha256_uchar(ctx, 0x00); return;
   case EXPLICIT: sha256_uchar(ctx, 0x01); break;
   case EVEN_Y: sha256_uchar(ctx, evenPrefix); break;
   case ODD_Y: sha256_uchar(ctx, oddPrefix); break;
  }
  sha256_hash(ctx, &conf->data);
}

/* Add an 'confidential' asset to be consumed by an ongoing SHA-256 evaluation.
 *