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KEYGEN: improve error handling

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hasufell 2014-05-28 23:11:52 +02:00
parent 67ec5615c7
commit bb0207ba03
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GPG Key ID: 220CD1C5BDEED020
1 changed files with 12 additions and 11 deletions
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23
src/keypair.c
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@ -45,25 +45,23 @@ ntru_create_keypair(
keypair *pair, keypair *pair,
ntru_context *ctx) ntru_context *ctx)
{ {
bool retval = true; bool retval = false;
fmpz_poly_t Fq, fmpz_poly_t Fq,
Fp, Fp,
pub; pub;
if (!f || !g || !ctx)
goto _return;
fmpz_poly_init(Fq); fmpz_poly_init(Fq);
fmpz_poly_init(Fp); fmpz_poly_init(Fp);
fmpz_poly_init(pub); fmpz_poly_init(pub);
if (!poly_inverse_poly_q(f, Fq, ctx))
goto _cleanup;
if (!poly_inverse_poly_q(f, Fq, ctx)) { if (!poly_inverse_poly_p(f, Fp, ctx))
retval = false; goto _cleanup;
goto cleanup;
}
if (!poly_inverse_poly_p(f, Fp, ctx)) {
retval = false;
goto cleanup;
}
poly_starmultiply(Fq, g, pub, ctx, ctx->q); poly_starmultiply(Fq, g, pub, ctx, ctx->q);
fmpz_poly_scalar_mul_ui(pub, pub, ctx->p); fmpz_poly_scalar_mul_ui(pub, pub, ctx->p);
@ -77,10 +75,13 @@ ntru_create_keypair(
fmpz_poly_set(pair->priv_inv, Fp); fmpz_poly_set(pair->priv_inv, Fp);
fmpz_poly_set(pair->pub, pub); fmpz_poly_set(pair->pub, pub);
cleanup: retval = true;
_cleanup:
fmpz_poly_clear(Fq); fmpz_poly_clear(Fq);
fmpz_poly_clear(Fp); fmpz_poly_clear(Fp);
fmpz_poly_clear(pub); fmpz_poly_clear(pub);
_return:
return retval; return retval;
} }