tor/src/lib/defs/x25519_sizes.h

/* Copyright (c) 2001, Matej Pfajfar.
 * Copyright (c) 2001-2004, Roger Dingledine.
 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
 * Copyright (c) 2007-2018, The Tor Project, Inc. */
/* See LICENSE for licensing information */

/**
 * \file x25519_sizes.h

 * \brief Definitions for sizes of x25519 keys and elements.
 *
 * Tor uses these definitions throughout its codebase, even in parts that
 * don't actually do any x25519 calculations.
 **/

#ifndef TOR_X25519_SIZES_H
#define TOR_X25519_SIZES_H

/** Length of a curve25519 public key when encoded. */
#define CURVE25519_PUBKEY_LEN 32
/** Length of a curve25519 secret key when encoded. */
#define CURVE25519_SECKEY_LEN 32
/** Length of the result of a curve25519 handshake. */
#define CURVE25519_OUTPUT_LEN 32

#define ED25519_PUBKEY_LEN 32
#define ED25519_SECKEY_LEN 64
#define ED25519_SECKEY_SEED_LEN 32
#define ED25519_SIG_LEN 64

#define CURVE25519_BASE64_PADDED_LEN 44

#define ED25519_BASE64_LEN 43
#define ED25519_SIG_BASE64_LEN 86

#endif