85 líneas
2.7 KiB
C
85 líneas
2.7 KiB
C
/*
|
|
xmss.h version 20160722
|
|
Andreas Hülsing
|
|
Joost Rijneveld
|
|
Public domain.
|
|
*/
|
|
|
|
#include "wots.h"
|
|
|
|
#ifndef XMSS_H
|
|
#define XMSS_H
|
|
typedef struct{
|
|
unsigned int level;
|
|
unsigned long long subtree;
|
|
unsigned int subleaf;
|
|
} leafaddr;
|
|
|
|
typedef struct{
|
|
wots_params wots_par;
|
|
unsigned int n;
|
|
unsigned int h;
|
|
unsigned char hash_alg;
|
|
} xmss_params;
|
|
|
|
typedef struct{
|
|
xmss_params xmss_par;
|
|
unsigned int n;
|
|
unsigned int h;
|
|
unsigned int d;
|
|
unsigned int index_len;
|
|
} xmssmt_params;
|
|
/**
|
|
* Initializes parameter set.
|
|
* Needed, for any of the other methods.
|
|
*/
|
|
void xmss_set_params(xmss_params *params, int n, int h, int w, unsigned char hash_alg);
|
|
/**
|
|
* Initialize xmssmt_params struct
|
|
* parameter names are the same as in the draft
|
|
*
|
|
* Especially h is the total tree height, i.e. the XMSS trees have height h/d
|
|
*/
|
|
void xmssmt_set_params(xmssmt_params *params, int n, int h, int d, int w, unsigned char hash_alg);
|
|
/**
|
|
* Generates a XMSS key pair for a given parameter set.
|
|
* Format sk: [(32bit) idx || SK_SEED || SK_PRF || PUB_SEED || root]
|
|
* Format pk: [root || PUB_SEED] omitting algo oid.
|
|
*/
|
|
int xmss_keypair(unsigned char *pk, unsigned char *sk, xmss_params *params);
|
|
/**
|
|
* Signs a message.
|
|
* Returns
|
|
* 1. an array containing the signature followed by the message AND
|
|
* 2. an updated secret key!
|
|
*
|
|
*/
|
|
int xmss_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg,unsigned long long msglen, const xmss_params *params);
|
|
/**
|
|
* Verifies a given message signature pair under a given public key.
|
|
*
|
|
* Note: msg and msglen are pure outputs which carry the message in case verification succeeds. The (input) message is assumed to be within sig_msg which has the form (sig||msg).
|
|
*/
|
|
int xmss_sign_open(unsigned char *msg,unsigned long long *msglen, const unsigned char *sig_msg,unsigned long long sig_msg_len, const unsigned char *pk, const xmss_params *params);
|
|
|
|
/*
|
|
* Generates a XMSSMT key pair for a given parameter set.
|
|
* Format sk: [(ceil(h/8) bit) idx || SK_SEED || SK_PRF || PUB_SEED || root]
|
|
* Format pk: [root || PUB_SEED] omitting algo oid.
|
|
*/
|
|
int xmssmt_keypair(unsigned char *pk, unsigned char *sk, xmssmt_params *params);
|
|
/**
|
|
* Signs a message.
|
|
* Returns
|
|
* 1. an array containing the signature followed by the message AND
|
|
* 2. an updated secret key!
|
|
*
|
|
*/
|
|
int xmssmt_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmssmt_params *params);
|
|
/**
|
|
* Verifies a given message signature pair under a given public key.
|
|
*/
|
|
int xmssmt_sign_open(unsigned char *msg, unsigned long long *msglen, const unsigned char *sig_msg, unsigned long long sig_msg_len, const unsigned char *pk, const xmssmt_params *params);
|
|
#endif
|
|
|