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wolfssl/tests/api/test_ed448.c
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/* test_ed448.c
*
* Copyright (C) 2006-2026 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#include <tests/unit.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#define WOLFSSL_MISC_INCLUDED
#include <wolfcrypt/src/misc.c>
#endif
#include <wolfssl/wolfcrypt/ed448.h>
#include <wolfssl/wolfcrypt/types.h>
#include <tests/api/api.h>
#include <tests/api/test_ed448.h>
/*
* Testing wc_ed448_make_key().
*/
int test_wc_ed448_make_key(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448)
ed448_key key;
WC_RNG rng;
unsigned char pubkey[ED448_PUB_KEY_SIZE];
XMEMSET(&key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_public(&key, pubkey, sizeof(pubkey)),
WC_NO_ERR_TRACE(ECC_PRIV_KEY_E));
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_make_key(NULL, ED448_KEY_SIZE, &key),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE - 1, &key),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE + 1, &key),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_make_key */
/*
* Testing wc_ed448_init()
*/
int test_wc_ed448_init(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448)
ed448_key key;
XMEMSET(&key, 0, sizeof(ed448_key));
ExpectIntEQ(wc_ed448_init(&key), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_init(NULL), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_init */
/*
* Test wc_ed448_sign_msg() and wc_ed448_verify_msg()
*/
int test_wc_ed448_sign_msg(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_SIGN)
ed448_key key;
WC_RNG rng;
byte msg[] = "Everybody gets Friday off.\n";
byte sig[ED448_SIG_SIZE];
word32 msglen = sizeof(msg);
word32 siglen = sizeof(sig);
word32 badSigLen = sizeof(sig) - 1;
#ifdef HAVE_ED448_VERIFY
int verify_ok = 0; /*1 = Verify success.*/
#endif
/* Initialize stack variables. */
XMEMSET(&key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
XMEMSET(sig, 0, siglen);
/* Initialize key. */
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
ExpectIntEQ(wc_ed448_sign_msg(msg, msglen, sig, &siglen, &key, NULL, 0), 0);
ExpectIntEQ(siglen, ED448_SIG_SIZE);
/* Test bad args. */
ExpectIntEQ(wc_ed448_sign_msg(NULL, msglen, sig, &siglen, &key, NULL, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_sign_msg(msg, msglen, NULL, &siglen, &key, NULL, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_sign_msg(msg, msglen, sig, NULL, &key, NULL, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_sign_msg(msg, msglen, sig, &siglen, NULL, NULL, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_sign_msg(msg, msglen, sig, &badSigLen, &key, NULL, 0),
WC_NO_ERR_TRACE(BUFFER_E));
ExpectIntEQ(badSigLen, ED448_SIG_SIZE);
badSigLen--;
#ifdef HAVE_ED448_VERIFY
ExpectIntEQ(wc_ed448_verify_msg(sig, siglen, msg, msglen, &verify_ok, &key,
NULL, 0), 0);
ExpectIntEQ(verify_ok, 1);
/* Test bad args. */
ExpectIntEQ(wc_ed448_verify_msg(sig, siglen - 1, msg, msglen, &verify_ok,
&key, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_verify_msg(sig, siglen + 1, msg, msglen, &verify_ok,
&key, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_verify_msg(NULL, siglen, msg, msglen, &verify_ok,
&key, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_verify_msg(sig, siglen, NULL, msglen, &verify_ok,
&key, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_verify_msg(sig, siglen, msg, msglen, NULL,
&key, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_verify_msg(sig, siglen, msg, msglen, &verify_ok,
NULL, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_verify_msg(sig, badSigLen, msg, msglen, &verify_ok,
&key, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
#endif /* Verify. */
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_sign_msg */
/*
* Test that wc_ed448_sign_msg() rejects a public-key-only key object.
* A key with pubKeySet=1 but privKeySet=0 must not silently sign.
*/
int test_wc_ed448_sign_msg_pubonly_fails(void)
{
EXPECT_DECLS;
#if !defined(HAVE_FIPS) || FIPS_VERSION3_GE(7,0,0)
#if defined(HAVE_ED448) && defined(HAVE_ED448_SIGN) && \
defined(HAVE_ED448_KEY_IMPORT) && defined(HAVE_ED448_KEY_EXPORT)
ed448_key fullKey;
ed448_key pubOnlyKey;
WC_RNG rng;
byte pubBuf[ED448_PUB_KEY_SIZE];
word32 pubSz = sizeof(pubBuf);
byte msg[] = "test message for pubonly check";
byte sig[ED448_SIG_SIZE];
word32 sigLen = sizeof(sig);
XMEMSET(&fullKey, 0, sizeof(fullKey));
XMEMSET(&pubOnlyKey, 0, sizeof(pubOnlyKey));
XMEMSET(&rng, 0, sizeof(rng));
ExpectIntEQ(wc_ed448_init(&fullKey), 0);
ExpectIntEQ(wc_ed448_init(&pubOnlyKey), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
/* Generate a real key pair and export its public key. */
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &fullKey), 0);
ExpectIntEQ(wc_ed448_export_public(&fullKey, pubBuf, &pubSz), 0);
/* Import only the public key into a fresh key object. */
ExpectIntEQ(wc_ed448_import_public(pubBuf, pubSz, &pubOnlyKey), 0);
/* Signing with a public-key-only object must fail. */
ExpectIntEQ(wc_ed448_sign_msg(msg, sizeof(msg), sig, &sigLen,
&pubOnlyKey, NULL, 0), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&pubOnlyKey);
wc_ed448_free(&fullKey);
#endif
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_sign_msg_pubonly_fails */
/*
* Testing wc_ed448_import_public()
*/
int test_wc_ed448_import_public(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_IMPORT)
ed448_key pubKey;
WC_RNG rng;
const byte in[] =
"Ed448PublicKeyUnitTest.................................\n";
word32 inlen = sizeof(in);
XMEMSET(&pubKey, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&pubKey), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &pubKey), 0);
ExpectIntEQ(wc_ed448_import_public_ex(in, inlen, &pubKey, 1), 0);
ExpectIntEQ(XMEMCMP(in, pubKey.p, inlen), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_import_public(NULL, inlen, &pubKey),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_public(in, inlen, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_public(in, inlen - 1, &pubKey),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&pubKey);
#endif
return EXPECT_RESULT();
} /* END wc_ed448_import_public */
/*
* Testing wc_ed448_import_private_key()
*/
int test_wc_ed448_import_private_key(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_IMPORT)
ed448_key key;
WC_RNG rng;
const byte privKey[] =
"Ed448PrivateKeyUnitTest................................\n";
const byte pubKey[] =
"Ed448PublicKeyUnitTest.................................\n";
word32 privKeySz = sizeof(privKey);
word32 pubKeySz = sizeof(pubKey);
#ifdef HAVE_ED448_KEY_EXPORT
byte bothKeys[sizeof(privKey) + sizeof(pubKey)];
word32 bothKeysSz = sizeof(bothKeys);
#endif
XMEMSET(&key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
ExpectIntEQ(wc_ed448_import_private_key_ex(privKey, privKeySz, pubKey,
pubKeySz, &key, 1), 0);
ExpectIntEQ(XMEMCMP(pubKey, key.p, privKeySz), 0);
ExpectIntEQ(XMEMCMP(privKey, key.k, pubKeySz), 0);
#ifdef HAVE_ED448_KEY_EXPORT
PRIVATE_KEY_UNLOCK();
ExpectIntEQ(wc_ed448_export_private(&key, bothKeys, &bothKeysSz), 0);
PRIVATE_KEY_LOCK();
ExpectIntEQ(wc_ed448_import_private_key_ex(bothKeys, bothKeysSz, NULL, 0,
&key, 1), 0);
ExpectIntEQ(XMEMCMP(pubKey, key.p, privKeySz), 0);
ExpectIntEQ(XMEMCMP(privKey, key.k, pubKeySz), 0);
#endif
/* Test bad args. */
ExpectIntEQ(wc_ed448_import_private_key(NULL, privKeySz, pubKey, pubKeySz,
&key), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_private_key(privKey, privKeySz, NULL, pubKeySz,
&key), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_private_key(privKey, privKeySz, pubKey,
pubKeySz, NULL), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_private_key(privKey, privKeySz - 1, pubKey,
pubKeySz, &key), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_private_key(privKey, privKeySz, pubKey,
pubKeySz - 1, &key), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_import_private_key(privKey, privKeySz, NULL, 0, &key),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_import_private_key */
/*
* Testing wc_ed448_export_public() and wc_ed448_export_private_only()
*/
int test_wc_ed448_export(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT)
ed448_key key;
WC_RNG rng;
byte priv[ED448_PRV_KEY_SIZE];
byte pub[ED448_PUB_KEY_SIZE];
word32 privSz = sizeof(priv);
word32 pubSz = sizeof(pub);
XMEMSET(&key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&key), 0);
#if !defined(HAVE_FIPS) || FIPS_VERSION3_GE(7,0,0)
/* Reject export when private key not set. */
PRIVATE_KEY_UNLOCK();
ExpectIntEQ(wc_ed448_export_private_only(&key, priv, &privSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_private(&key, priv, &privSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
PRIVATE_KEY_LOCK();
#endif /* !HAVE_FIPS || FIPS_VERSION3_GE(7,0,0) */
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
ExpectIntEQ(wc_ed448_export_public(&key, pub, &pubSz), 0);
ExpectIntEQ(pubSz, ED448_KEY_SIZE);
ExpectIntEQ(XMEMCMP(key.p, pub, pubSz), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_export_public(NULL, pub, &pubSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_public(&key, NULL, &pubSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_public(&key, pub, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
PRIVATE_KEY_UNLOCK();
ExpectIntEQ(wc_ed448_export_private_only(&key, priv, &privSz), 0);
ExpectIntEQ(privSz, ED448_KEY_SIZE);
ExpectIntEQ(XMEMCMP(key.k, priv, privSz), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_export_private_only(NULL, priv, &privSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_private_only(&key, NULL, &privSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_private_only(&key, priv, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
PRIVATE_KEY_LOCK();
#ifdef HAVE_ED448_KEY_IMPORT
/* Public-only key: re-init and import just the public part; private
* exports must still fail with privKeySet == 0. */
wc_ed448_free(&key);
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_ed448_import_public(pub, pubSz, &key), 0);
#if !defined(HAVE_FIPS) || FIPS_VERSION3_GE(7,0,0)
PRIVATE_KEY_UNLOCK();
ExpectIntEQ(wc_ed448_export_private_only(&key, priv, &privSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_private(&key, priv, &privSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
PRIVATE_KEY_LOCK();
#endif /* !HAVE_FIPS || FIPS_VERSION3_GE(7,0,0) */
#endif
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_export */
/*
* Testing wc_ed448_size()
*/
int test_wc_ed448_size(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448)
ed448_key key;
WC_RNG rng;
XMEMSET(&key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
ExpectIntEQ(wc_ed448_size(&key), ED448_KEY_SIZE);
/* Test bad args. */
ExpectIntEQ(wc_ed448_size(NULL), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_sig_size(&key), ED448_SIG_SIZE);
/* Test bad args. */
ExpectIntEQ(wc_ed448_sig_size(NULL), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_pub_size(&key), ED448_PUB_KEY_SIZE);
/* Test bad args. */
ExpectIntEQ(wc_ed448_pub_size(NULL), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_priv_size(&key), ED448_PRV_KEY_SIZE);
/* Test bad args. */
ExpectIntEQ(wc_ed448_priv_size(NULL), WC_NO_ERR_TRACE(BAD_FUNC_ARG));
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_size */
/*
* Testing wc_ed448_export_private() and wc_ed448_export_key()
*/
int test_wc_ed448_exportKey(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT)
ed448_key key;
WC_RNG rng;
byte priv[ED448_PRV_KEY_SIZE];
byte pub[ED448_PUB_KEY_SIZE];
byte privOnly[ED448_PRV_KEY_SIZE];
word32 privSz = sizeof(priv);
word32 pubSz = sizeof(pub);
word32 privOnlySz = sizeof(privOnly);
XMEMSET(&key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
PRIVATE_KEY_UNLOCK();
ExpectIntEQ(wc_ed448_export_private(&key, privOnly, &privOnlySz), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_export_private(NULL, privOnly, &privOnlySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_private(&key, NULL, &privOnlySz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_private(&key, privOnly, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_key(&key, priv, &privSz, pub, &pubSz), 0);
/* Test bad args. */
ExpectIntEQ(wc_ed448_export_key(NULL, priv, &privSz, pub, &pubSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_key(&key, NULL, &privSz, pub, &pubSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_key(&key, priv, NULL, pub, &pubSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_key(&key, priv, &privSz, NULL, &pubSz),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_export_key(&key, priv, &privSz, pub, NULL),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
PRIVATE_KEY_LOCK();
/* Cross check output. */
ExpectIntEQ(XMEMCMP(priv, privOnly, privSz), 0);
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
#endif
return EXPECT_RESULT();
} /* END test_wc_ed448_exportKey */
/*
* Testing wc_Ed448PublicKeyToDer
*/
int test_wc_Ed448PublicKeyToDer(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
(defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
ed448_key key;
byte derBuf[1024];
WC_RNG rng;
XMEMSET(&rng, 0, sizeof(WC_RNG));
XMEMSET(&key, 0, sizeof(ed448_key));
/* Test bad args */
ExpectIntEQ(wc_Ed448PublicKeyToDer(NULL, NULL, 0, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_ed448_init(&key), 0);
#if defined(HAVE_FIPS) && FIPS_VERSION3_LT(7,0,0)
if (EXPECT_SUCCESS()) {
int ret = wc_Ed448PublicKeyToDer(&key, derBuf, 0, 0);
ExpectTrue((ret == WC_NO_ERR_TRACE(BUFFER_E)) ||
(ret == WC_NO_ERR_TRACE(PUBLIC_KEY_E)));
}
#else
ExpectIntEQ(wc_Ed448PublicKeyToDer(&key, derBuf, 0, 0),
WC_NO_ERR_TRACE(PUBLIC_KEY_E));
#endif
wc_ed448_free(&key);
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
ExpectIntEQ(wc_Ed448PublicKeyToDer(&key, derBuf, 0, 0),
WC_NO_ERR_TRACE(BUFFER_E));
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
/* Test good args */
if (EXPECT_SUCCESS()) {
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
/* length only */
ExpectIntGT(wc_Ed448PublicKeyToDer(&key, NULL, 0, 0), 0);
ExpectIntGT(wc_Ed448PublicKeyToDer(&key, NULL, 0, 1), 0);
ExpectIntGT(wc_Ed448PublicKeyToDer(&key, derBuf,
(word32)sizeof(derBuf), 1), 0);
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&key);
}
#endif
return EXPECT_RESULT();
} /* END testing wc_Ed448PublicKeyToDer */
/*
* Testing wc_Ed448KeyToDer
*/
int test_wc_Ed448KeyToDer(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
(defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
byte output[ONEK_BUF];
ed448_key ed448Key;
WC_RNG rng;
word32 inLen;
XMEMSET(&ed448Key, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&ed448Key), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &ed448Key), 0);
inLen = (word32)sizeof(output);
/* Bad Cases */
ExpectIntEQ(wc_Ed448KeyToDer(NULL, NULL, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_Ed448KeyToDer(NULL, output, inLen),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_Ed448KeyToDer(&ed448Key, output, 0),
WC_NO_ERR_TRACE(BUFFER_E));
/* Good Cases */
/* length only */
ExpectIntGT(wc_Ed448KeyToDer(&ed448Key, NULL, 0), 0);
ExpectIntGT(wc_Ed448KeyToDer(&ed448Key, output, inLen), 0);
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&ed448Key);
#endif
return EXPECT_RESULT();
} /* End test_wc_Ed448KeyToDer */
/*
* Testing wc_Ed448PrivateKeyToDer
*/
int test_wc_Ed448PrivateKeyToDer(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
(defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
byte output[ONEK_BUF];
ed448_key ed448PrivKey;
WC_RNG rng;
word32 inLen;
XMEMSET(&ed448PrivKey, 0, sizeof(ed448_key));
XMEMSET(&rng, 0, sizeof(WC_RNG));
ExpectIntEQ(wc_ed448_init(&ed448PrivKey), 0);
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &ed448PrivKey),
0);
inLen = (word32)sizeof(output);
/* Bad Cases */
ExpectIntEQ(wc_Ed448PrivateKeyToDer(NULL, NULL, 0),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_Ed448PrivateKeyToDer(NULL, output, inLen),
WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(wc_Ed448PrivateKeyToDer(&ed448PrivKey, output, 0),
WC_NO_ERR_TRACE(BUFFER_E));
/* Good cases */
/* length only */
ExpectIntGT(wc_Ed448PrivateKeyToDer(&ed448PrivKey, NULL, 0), 0);
ExpectIntGT(wc_Ed448PrivateKeyToDer(&ed448PrivKey, output, inLen), 0);
DoExpectIntEQ(wc_FreeRng(&rng), 0);
wc_ed448_free(&ed448PrivKey);
#endif
return EXPECT_RESULT();
} /* End test_wc_Ed448PrivateKeyToDer */
/*
* RFC 5958: version=v2 (1) when pub key is bundled, v1 (0) for private only. */
int test_wc_Ed448KeyToDer_oneasymkey_version(void)
{
EXPECT_DECLS;
#if defined(HAVE_ED448) && defined(HAVE_ED448_KEY_EXPORT) && \
defined(HAVE_ED448_KEY_IMPORT) && defined(WOLFSSL_KEY_GEN)
ed448_key key;
ed448_key key2;
WC_RNG rng;
byte ref[512]; /* reference DER (bundled, then private only) */
byte rt[512]; /* re-export target for memcmp */
int refSz = 0;
int rtSz = 0;
word32 idx;
XMEMSET(&key, 0, sizeof(key));
XMEMSET(&key2, 0, sizeof(key2));
XMEMSET(&rng, 0, sizeof(rng));
ExpectIntEQ(wc_InitRng(&rng), 0);
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_ed448_init(&key2), 0);
ExpectIntEQ(wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key), 0);
/* Bundled (v=1) */
ExpectIntGT(refSz = wc_Ed448KeyToDer(&key, ref, (word32)sizeof(ref)), 0);
ExpectIntEQ(test_pkcs8_get_version_byte(ref, (word32)refSz), 1);
idx = 0;
ExpectIntEQ(wc_Ed448PrivateKeyDecode(ref, &idx, &key2, (word32)refSz), 0);
ExpectIntEQ(rtSz = wc_Ed448KeyToDer(&key2, rt, (word32)sizeof(rt)), refSz);
ExpectIntEQ(XMEMCMP(ref, rt, (size_t)refSz), 0);
/* Private only (v=0) */
ExpectIntGT(refSz = wc_Ed448PrivateKeyToDer(&key, ref,
(word32)sizeof(ref)), 0);
ExpectIntEQ(test_pkcs8_get_version_byte(ref, (word32)refSz), 0);
wc_ed448_free(&key);
wc_ed448_free(&key2);
wc_FreeRng(&rng);
#endif
return EXPECT_RESULT();
}
/* Ed448 identity and small-order public keys must be rejected.
* Edwards448 has cofactor 4, so the small-order subgroup contains the
* identity, an order-2 point, and two order-4 points. With any of these
* as the public key, h*A is the neutral element and forged signatures
* verify for arbitrary messages. Gated on FIPS_VERSION3_GE(7,0,0)
* because older FIPS-certified modules do not have this check in their
* frozen copy of ed448.c. */
int test_wc_ed448_reject_small_order_keys(void)
{
EXPECT_DECLS;
#if (!defined(HAVE_FIPS) || FIPS_VERSION3_GE(7,0,0)) && \
defined(HAVE_ED448) && defined(HAVE_ED448_KEY_IMPORT)
/* Two regressions are guarded here. Both sign-bit variants of each
* y are listed so weakening the "clear all of byte 56" mask in
* ed448_is_small_order() would be caught. The non-canonical rows
* (y = p, y = p + 1) guard against dropping the canonical-form
* coverage: fe448_from_bytes reads bytes 0-55 modulo p with no
* canonical-form check, so y = p decodes to 0 and y = p + 1
* decodes to 1, both of which are small order. */
static const byte small_order_keys[][ED448_PUB_KEY_SIZE] = {
/* identity (y = 1), sign 0 */
{0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00},
/* identity (y = 1), sign bit set */
{0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x80},
/* order 4: y = 0, x-sign 0 */
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00},
/* order 4: y = 0, x-sign 1 */
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x80},
/* order 2: y = p - 1, x = 0, sign 0 */
{0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xfe,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x00},
/* order 2: y = p - 1, sign bit set */
{0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xfe,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x80},
/* non-canonical y = p (decodes to y = 0), sign 0 */
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xfe,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x00},
/* non-canonical y = p, sign bit set */
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xfe,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x80},
/* non-canonical y = p + 1 (decodes to y = 1), sign 0 */
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x00},
/* non-canonical y = p + 1, sign bit set */
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x80},
};
#ifndef NO_ED448_VERIFY
/* Arbitrary signature bytes: S = 1 (must be below the Ed448 group
* order or wc_ed448_verify_msg() returns BAD_FUNC_ARG before the
* small-order check has a chance to fire). The R bytes do not need
* to encode a valid curve point for this test - the small-order
* defence in ed448_verify_msg_final_with_sha() rejects the public
* key before the R/S verification math runs. */
static const byte forged_sig[ED448_SIG_SIZE] = {
/* R: 57 bytes of arbitrary data (last byte 0 to satisfy the
* spec-mandated zero of byte 56 bits 0-6; sign bit doesn't
* matter here). */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,
/* S = 1 */
0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00
};
#endif
ed448_key key;
word32 i;
word32 num_keys = (word32)(sizeof(small_order_keys) / ED448_PUB_KEY_SIZE);
/* (1) Untrusted wc_ed448_import_public must reject every small-order
* encoding (it runs wc_ed448_check_key as part of the import). */
for (i = 0; i < num_keys; i++) {
int rc;
XMEMSET(&key, 0, sizeof(key));
ExpectIntEQ(wc_ed448_init(&key), 0);
rc = wc_ed448_import_public(small_order_keys[i],
ED448_PUB_KEY_SIZE, &key);
if (rc != WC_NO_ERR_TRACE(PUBLIC_KEY_E)) {
fprintf(stderr, "small_order_keys[%u]: import_public returned %d, "
"expected PUBLIC_KEY_E\n", (unsigned)i, rc);
}
ExpectIntEQ(rc, WC_NO_ERR_TRACE(PUBLIC_KEY_E));
wc_ed448_free(&key);
}
/* (2) wc_ed448_check_key called directly must also reject. Guards
* against a refactor that moves the small-order check out of
* check_key and into the import path: (1) would still pass, but the
* documented check_key contract would silently regress. */
for (i = 0; i < num_keys; i++) {
int rc;
XMEMSET(&key, 0, sizeof(key));
ExpectIntEQ(wc_ed448_init(&key), 0);
/* trusted = 1 bypasses the import-time check_key call so the
* direct check_key below is what's under test. */
ExpectIntEQ(wc_ed448_import_public_ex(small_order_keys[i],
ED448_PUB_KEY_SIZE, &key, 1), 0);
rc = wc_ed448_check_key(&key);
if (rc != WC_NO_ERR_TRACE(PUBLIC_KEY_E)) {
fprintf(stderr, "small_order_keys[%u]: check_key returned %d, "
"expected PUBLIC_KEY_E\n", (unsigned)i, rc);
}
ExpectIntEQ(rc, WC_NO_ERR_TRACE(PUBLIC_KEY_E));
wc_ed448_free(&key);
}
#ifndef NO_ED448_VERIFY
/* (3) Even a "trusted" import (which bypasses wc_ed448_check_key)
* must not let wc_ed448_verify_msg accept a forged signature against
* an identity public key. Test both the canonical encoding (y = 1,
* small_order_keys[0]) and the non-canonical encoding (y = p + 1,
* small_order_keys[8]) so the verify-side check is exercised against
* the canonical-form bypass route, not just the byte-for-byte
* identity. */
{
static const word32 identity_indices[] = { 0, 8 };
const char* msg = "forged message";
word32 j;
for (j = 0;
j < sizeof(identity_indices)/sizeof(identity_indices[0]);
j++) {
word32 idx = identity_indices[j];
int verify_result = 1;
int rc;
XMEMSET(&key, 0, sizeof(key));
ExpectIntEQ(wc_ed448_init(&key), 0);
ExpectIntEQ(wc_ed448_import_public_ex(small_order_keys[idx],
ED448_PUB_KEY_SIZE, &key, 1), 0);
rc = wc_ed448_verify_msg(forged_sig, sizeof(forged_sig),
(const byte*)msg, (word32)XSTRLEN(msg), &verify_result,
&key, NULL, 0);
if (rc != WC_NO_ERR_TRACE(BAD_FUNC_ARG) || verify_result != 0) {
fprintf(stderr, "verify_msg with identity-equiv "
"small_order_keys[%u]: rc=%d verify_result=%d "
"(expected BAD_FUNC_ARG and 0)\n",
(unsigned)idx, rc, verify_result);
}
ExpectIntEQ(rc, WC_NO_ERR_TRACE(BAD_FUNC_ARG));
ExpectIntEQ(verify_result, 0);
wc_ed448_free(&key);
}
}
#endif
#endif
return EXPECT_RESULT();
}
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