40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*
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wots.h version 20160722
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Andreas Hülsing
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Joost Rijneveld
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Public domain.
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*/
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#ifndef XMSS_WOTS_H
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#define XMSS_WOTS_H
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#include <stdint.h>
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#include "params.h"
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/**
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* WOTS key generation. Takes a 32byte seed for the secret key, expands it to a full WOTS secret key and computes the corresponding public key.
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* For this it takes the seed pub_seed which is used to generate bitmasks and hash keys and the address of this WOTS key pair addr
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*
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* Places the computed public key at address pk.
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*/
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void wots_pkgen(const xmss_params *params,
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unsigned char *pk, const unsigned char *sk,
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const unsigned char *pub_seed, uint32_t addr[8]);
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/**
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* Takes a m-byte message and the 32-byte seed for the secret key to compute a signature that is placed at "sig".
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*/
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void wots_sign(const xmss_params *params,
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unsigned char *sig, const unsigned char *msg,
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const unsigned char *sk, const unsigned char *pub_seed,
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uint32_t addr[8]);
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/**
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* Takes a WOTS signature, a m-byte message and computes a WOTS public key that it places at pk.
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*/
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void wots_pk_from_sig(const xmss_params *params, unsigned char *pk,
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const unsigned char *sig, const unsigned char *msg,
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const unsigned char *pub_seed, uint32_t addr[8]);
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#endif
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