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60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
#include <stdint.h>
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#include "shake256.h"
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int
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eddsa_sign_448 (uint8_t *out, const uint8_t *input, unsigned int ilen,
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const uint8_t *a_in, const uint8_t *seed, const uint8_t *pk);
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void
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eddsa_public_key_448 (uint8_t *pk, const uint8_t *a_in);
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static const uint8_t raw_sk[57] = {
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0x6c, 0x82, 0xa5, 0x62, 0xcb, 0x80, 0x8d, 0x10,
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0xd6, 0x32, 0xbe, 0x89, 0xc8, 0x51, 0x3e, 0xbf,
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0x6c, 0x92, 0x9f, 0x34, 0xdd, 0xfa, 0x8c, 0x9f,
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0x63, 0xc9, 0x96, 0x0e, 0xf6, 0xe3, 0x48, 0xa3,
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0x52, 0x8c, 0x8a, 0x3f, 0xcc, 0x2f, 0x04, 0x4e,
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0x39, 0xa3, 0xfc, 0x5b, 0x94, 0x49, 0x2f, 0x8f,
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0x03, 0x2e, 0x75, 0x49, 0xa2, 0x00, 0x98, 0xf9,
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0x5b
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};
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#include <stdio.h>
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static void
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printout_hex (uint8_t *p, int len)
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{
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int i;
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for (i = 0; i < len; i++)
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printf ("%02x", p[i]);
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puts ("");
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}
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int
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main (int argc, const char *argv[])
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{
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shake_context ctx;
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uint8_t hash[2*57];
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uint8_t *sk;
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uint8_t *seed;
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uint8_t pk[57];
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uint8_t sig[57*2];
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shake256_start (&ctx);
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shake256_update (&ctx, raw_sk, 57);
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shake256_finish (&ctx, (uint8_t *)hash, 2*57);
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sk = hash;
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seed = hash + 57;
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printout_hex (sk, 56);
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eddsa_public_key_448 (pk, sk);
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printout_hex (pk, 57);
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eddsa_sign_448 (sig, "", 0, sk, seed, pk);
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printout_hex (sig, 57*2);
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}
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