/src/cryptofuzz-sp-math/modules/wolfcrypt/ecdsa_25519.cpp

Source
#include "ecdsa_25519.h"
#include "module_internal.h"
#include "shared.h"
#include "bn_ops.h"
#include <cryptofuzz/util.h>

extern "C" {
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/curve25519.h>
#include <wolfssl/wolfcrypt/ed25519.h>
}

namespace cryptofuzz {
namespace module {
namespace wolfCrypt_detail {

#if defined(CRYPTOFUZZ_WOLFCRYPT_ALLOCATION_FAILURES)
    extern bool haveAllocFailure;
#endif

static bool ed25519LoadPrivateKey(ed25519_key& key, component::Bignum priv, Datasource& ds) {
    bool ret = false;

    uint8_t priv_bytes[ED25519_KEY_SIZE];

    CF_CHECK_EQ(wolfCrypt_bignum::Bignum::ToBin(ds, priv, priv_bytes, sizeof(priv_bytes)), true);
    CF_CHECK_EQ(wc_ed25519_import_private_only(priv_bytes, sizeof(priv_bytes), &key), 0);

    ret = true;
end:
    return ret;
}

static bool ed25519LoadPublicKey(ed25519_key& key, component::Bignum pub, Datasource& ds, const bool mustSucceed = false) {
    bool ret = false;

    uint8_t pub_bytes[ED25519_PUB_KEY_SIZE];
    CF_CHECK_EQ(wolfCrypt_bignum::Bignum::ToBin(ds, pub, pub_bytes, sizeof(pub_bytes), mustSucceed), true);
    CF_CHECK_EQ(wc_ed25519_import_public(pub_bytes, sizeof(pub_bytes), &key), 0);

    ret = true;
end:
    return ret;
}

static std::optional<std::vector<uint8_t>> ed25519GetPublicKeyAsVector(ed25519_key& key) {
    std::optional<std::vector<uint8_t>> ret = std::nullopt;
    uint8_t pub_bytes[ED25519_PUB_KEY_SIZE];

    WC_CHECK_EQ(wc_ed25519_make_public(&key, pub_bytes, sizeof(pub_bytes)), MP_OKAY);

    ret = std::vector<uint8_t>(pub_bytes, pub_bytes + sizeof(pub_bytes));
end:
    return ret;
}

static std::optional<component::ECC_PublicKey> ed25519GetPublicKey(ed25519_key& key, Datasource& ds) {
    std::optional<component::ECC_PublicKey> ret = std::nullopt;
    std::optional<std::vector<uint8_t>> pubv = std::nullopt;
    std::optional<component::Bignum> pub = std::nullopt;

    CF_CHECK_NE(pubv = ed25519GetPublicKeyAsVector(key), std::nullopt);
    CF_CHECK_NE(pub = wolfCrypt_bignum::Bignum::BinToBignum(ds, pubv->data(), pubv->size()), std::nullopt);

    ret = {pub->ToString(), "0"};

end:
    return ret;
}

static bool ed25519DerivePublicKey(ed25519_key& key) {
    std::optional<std::vector<uint8_t>> pubv = std::nullopt;
    bool ret = false;

    CF_CHECK_NE(pubv = ed25519GetPublicKeyAsVector(key), std::nullopt);
    memcpy(key.p, pubv->data(), ED25519_PUB_KEY_SIZE);
    key.pubKeySet = 1;

    ret = true;

end:
    return ret;
}

std::optional<component::ECC_PublicKey> OpECC_PrivateToPublic_Curve25519(operation::ECC_PrivateToPublic& op) {
    std::optional<component::ECC_PublicKey> ret = std::nullopt;
    Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
    wolfCrypt_detail::SetGlobalDs(&ds);

    wolfCrypt_bignum::Bignum priv(ds), pub(ds);
    uint8_t pub_bytes[CURVE25519_KEYSIZE];
    uint8_t priv_bytes[CURVE25519_KEYSIZE];

    /* Load private key */
    {
        CF_CHECK_EQ(priv.Set(op.priv.ToString(ds)), true);
        CF_CHECK_TRUE(priv.ToBin(priv_bytes, sizeof(priv_bytes)));
        priv_bytes[0] &= 248;
        priv_bytes[31] &= 127;
        priv_bytes[31] |= 64;
    }

    /* Convert to public key */
    {
        WC_CHECK_EQ(wc_curve25519_make_pub(sizeof(pub_bytes), pub_bytes, sizeof(priv_bytes), priv_bytes), MP_OKAY);
    }

    /* Convert public key */
    {
        std::optional<std::string> pub_x_str;
        CF_CHECK_EQ(mp_read_unsigned_bin(pub.GetPtr(), pub_bytes, sizeof(pub_bytes)), MP_OKAY);
        CF_CHECK_NE(pub_x_str = pub.ToDecString(), std::nullopt);
        ret = { *pub_x_str, "0" };
    }

end:
    wolfCrypt_detail::UnsetGlobalDs();
    return ret;
}

std::optional<component::ECC_PublicKey> OpECC_PrivateToPublic_Ed25519(operation::ECC_PrivateToPublic& op) {
    std::optional<component::ECC_PublicKey> ret = std::nullopt;
    Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
    wolfCrypt_detail::SetGlobalDs(&ds);

    wolfCrypt_bignum::Bignum priv(ds), pub(ds);

    ed25519_key key;
    bool e25519_key_inited = false;

    WC_CHECK_EQ(wc_ed25519_init(&key), 0);
    e25519_key_inited = true;

    CF_CHECK_EQ(ed25519LoadPrivateKey(key, op.priv, ds), true);
    ret = ed25519GetPublicKey(key, ds);

end:
    if ( e25519_key_inited == true ) {
        wc_ed25519_free(&key);
    }

    wolfCrypt_detail::UnsetGlobalDs();
    return ret;
}

std::optional<bool> OpECC_ValidatePubkey_Curve25519(operation::ECC_ValidatePubkey& op) {
    std::optional<bool> ret = std::nullopt;
    Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
    wolfCrypt_detail::SetGlobalDs(&ds);

    wolfCrypt_bignum::Bignum pub(ds);
    uint8_t pub_bytes[CURVE25519_KEYSIZE];

    CF_CHECK_EQ(pub.Set(op.pub.first.ToString(ds)), true);
    CF_CHECK_TRUE(pub.ToBin(pub_bytes, sizeof(pub_bytes)));

    haveAllocFailure = false;
    ret = wc_curve25519_check_public(pub_bytes, sizeof(pub_bytes), EC25519_BIG_ENDIAN) == 0;
    if ( *ret == false && haveAllocFailure == true ) {
        ret = std::nullopt;
    }

end:

    wolfCrypt_detail::UnsetGlobalDs();
    return ret;
}

std::optional<bool> OpECC_ValidatePubkey_Ed25519(operation::ECC_ValidatePubkey& op) {
    std::optional<bool> ret = std::nullopt;
    Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
    wolfCrypt_detail::SetGlobalDs(&ds);

    ed25519_key key;
    bool e25519_key_inited = false;

    WC_CHECK_EQ(wc_ed25519_init(&key), 0);
    e25519_key_inited = true;

    CF_CHECK_EQ(ed25519LoadPublicKey(key, op.pub.first, ds), true);

    haveAllocFailure = false;
    ret = wc_ed25519_check_key(&key) == 0;
    if ( *ret == false && haveAllocFailure == true ) {
        ret = std::nullopt;
    }

end:
    if ( e25519_key_inited == true ) {
        wc_ed25519_free(&key);
    }

    wolfCrypt_detail::UnsetGlobalDs();
    return ret;
}

std::optional<component::ECDSA_Signature> OpECDSA_Sign_ed25519(operation::ECDSA_Sign& op) {
    std::optional<component::ECDSA_Signature> ret = std::nullopt;
    Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
    wolfCrypt_detail::SetGlobalDs(&ds);

    ed25519_key key;
    bool e25519_key_inited = false;
    uint8_t sig[ED25519_SIG_SIZE];
    word32 sigSz = sizeof(sig);

    WC_CHECK_EQ(wc_ed25519_init(&key), 0);
    e25519_key_inited = true;

    CF_CHECK_EQ(wolfCrypt_detail::ed25519LoadPrivateKey(key, op.priv, ds), true);
    CF_CHECK_EQ(wolfCrypt_detail::ed25519DerivePublicKey(key), true);

    /* Sign message */
    WC_CHECK_EQ(wc_ed25519_sign_msg(op.cleartext.GetPtr(), op.cleartext.GetSize(), sig, &sigSz, &key), MP_OKAY);
    CF_CHECK_EQ(sigSz, ED25519_SIG_SIZE);
    static_assert(ED25519_SIG_SIZE % 2 == 0);

    {
        std::optional<component::BignumPair> ret_sig;
        std::optional<component::BignumPair> ret_pub;

        CF_CHECK_NE(ret_sig = wolfCrypt_bignum::Bignum::BinToBignumPair(ds, sig, ED25519_SIG_SIZE), std::nullopt);
        CF_CHECK_NE(ret_pub = wolfCrypt_detail::ed25519GetPublicKey(key, ds), std::nullopt);

        ret = component::ECDSA_Signature(*ret_sig, *ret_pub);
    }

end:
    if ( e25519_key_inited == true ) {
        wc_ed25519_free(&key);
    }

    wolfCrypt_detail::UnsetGlobalDs();
    return ret;
}

std::optional<bool> OpECDSA_Verify_ed25519(operation::ECDSA_Verify& op) {
    std::optional<bool> ret = std::nullopt;
    Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
    wolfCrypt_detail::SetGlobalDs(&ds);

    ed25519_key key;
    bool e25519_key_inited = false;
    uint8_t ed25519sig[ED25519_SIG_SIZE];
    int verify;
    bool oneShot = true;
    bool haveEmptyPart = false;

    haveAllocFailure = false;
    ret = false;

    WC_CHECK_EQ(wc_ed25519_init(&key), 0);
    e25519_key_inited = true;

    CF_CHECK_EQ(ed25519LoadPublicKey(key, op.signature.pub.first, ds, true), true);
    CF_CHECK_EQ(wolfCrypt_bignum::Bignum::ToBin(ds, op.signature.signature, ed25519sig, sizeof(ed25519sig), true), true);

#if defined(WOLFSSL_ED25519_STREAMING_VERIFY)
    try { oneShot = ds.Get<bool>(); } catch ( ... ) { }
#endif

    if ( oneShot == true ) {
        WC_CHECK_EQ(wc_ed25519_verify_msg(ed25519sig, sizeof(ed25519sig), op.cleartext.GetPtr(), op.cleartext.GetSize(), &verify, &key), 0);
    } else {
#if !defined(WOLFSSL_ED25519_STREAMING_VERIFY)
        CF_UNREACHABLE();
#else
        const auto parts = util::ToParts(ds, op.cleartext);

        WC_CHECK_EQ(wc_ed25519_verify_msg_init(ed25519sig, sizeof(ed25519sig), &key, (byte)Ed25519, nullptr, 0), 0);

        for (const auto& part : parts) {
            if ( part.second == 0 ) {
                haveEmptyPart = true;
            }
            WC_CHECK_EQ(wc_ed25519_verify_msg_update(part.first, part.second, &key), 0);
        }

        WC_CHECK_EQ(wc_ed25519_verify_msg_final(ed25519sig, sizeof(ed25519sig), &verify, &key), 0);
#endif
    }

    ret = verify ? true : false;

end:
    if ( e25519_key_inited == true ) {
        wc_ed25519_free(&key);
    }

    wolfCrypt_detail::UnsetGlobalDs();

    if ( ret && *ret == false ) {
        if ( haveAllocFailure ) {
            ret = std::nullopt;
        } else if ( haveEmptyPart ) {
            ret = std::nullopt;
        } else if ( op.cleartext.IsZero() ) {
            ret = std::nullopt;
        }

    }
    return ret;
}

} /* namespace wolfCrypt_detail */
} /* namespace module */
} /* namespace cryptofuzz */

Coverage Report

Created: 2026-07-22 06:50

Line	Count	Source
1		#include "ecdsa_25519.h"
2		#include "module_internal.h"
3		#include "shared.h"
4		#include "bn_ops.h"
5		#include <cryptofuzz/util.h>
6
7		extern "C" {
8		#include <wolfssl/options.h>
9		#include <wolfssl/wolfcrypt/curve25519.h>
10		#include <wolfssl/wolfcrypt/ed25519.h>
11		}
12
13		namespace cryptofuzz {
14		namespace module {
15		namespace wolfCrypt_detail {
16
17		#if defined(CRYPTOFUZZ_WOLFCRYPT_ALLOCATION_FAILURES)
18		extern bool haveAllocFailure;
19		#endif
20
21	847	static bool ed25519LoadPrivateKey(ed25519_key& key, component::Bignum priv, Datasource& ds) {
22	847	bool ret = false;
23
24	847	uint8_t priv_bytes[ED25519_KEY_SIZE];
25
26	847	CF_CHECK_EQ(wolfCrypt_bignum::Bignum::ToBin(ds, priv, priv_bytes, sizeof(priv_bytes)), true);
27	783	CF_CHECK_EQ(wc_ed25519_import_private_only(priv_bytes, sizeof(priv_bytes), &key), 0);
28
29	783	ret = true;
30	847	end:
31	847	return ret;
32	783	}
33
34	1.02k	static bool ed25519LoadPublicKey(ed25519_key& key, component::Bignum pub, Datasource& ds, const bool mustSucceed = false) {
35	1.02k	bool ret = false;
36
37	1.02k	uint8_t pub_bytes[ED25519_PUB_KEY_SIZE];
38	1.02k	CF_CHECK_EQ(wolfCrypt_bignum::Bignum::ToBin(ds, pub, pub_bytes, sizeof(pub_bytes), mustSucceed), true);
39	1.00k	CF_CHECK_EQ(wc_ed25519_import_public(pub_bytes, sizeof(pub_bytes), &key), 0);
40
41	944	ret = true;
42	1.02k	end:
43	1.02k	return ret;
44	944	}
45
46	1.30k	static std::optional<std::vector<uint8_t>> ed25519GetPublicKeyAsVector(ed25519_key& key) {
47	1.30k	std::optional<std::vector<uint8_t>> ret = std::nullopt;
48	1.30k	uint8_t pub_bytes[ED25519_PUB_KEY_SIZE];
49
50	1.30k	WC_CHECK_EQ(wc_ed25519_make_public(&key, pub_bytes, sizeof(pub_bytes)), MP_OKAY);
51
52	1.24k	ret = std::vector<uint8_t>(pub_bytes, pub_bytes + sizeof(pub_bytes));
53	1.30k	end:
54	1.30k	return ret;
55	1.24k	}
56
57	641	static std::optional<component::ECC_PublicKey> ed25519GetPublicKey(ed25519_key& key, Datasource& ds) {
58	641	std::optional<component::ECC_PublicKey> ret = std::nullopt;
59	641	std::optional<std::vector<uint8_t>> pubv = std::nullopt;
60	641	std::optional<component::Bignum> pub = std::nullopt;
61
62	641	CF_CHECK_NE(pubv = ed25519GetPublicKeyAsVector(key), std::nullopt);
63	603	CF_CHECK_NE(pub = wolfCrypt_bignum::Bignum::BinToBignum(ds, pubv->data(), pubv->size()), std::nullopt);
64
65	591	ret = {pub->ToString(), "0"};
66
67	641	end:
68	641	return ret;
69	591	}
70
71	666	static bool ed25519DerivePublicKey(ed25519_key& key) {
72	666	std::optional<std::vector<uint8_t>> pubv = std::nullopt;
73	666	bool ret = false;
74
75	666	CF_CHECK_NE(pubv = ed25519GetPublicKeyAsVector(key), std::nullopt);
76	638	memcpy(key.p, pubv->data(), ED25519_PUB_KEY_SIZE);
77	638	key.pubKeySet = 1;
78
79	638	ret = true;
80
81	666	end:
82	666	return ret;
83	638	}
84
85	545	std::optional<component::ECC_PublicKey> OpECC_PrivateToPublic_Curve25519(operation::ECC_PrivateToPublic& op) {
86	545	std::optional<component::ECC_PublicKey> ret = std::nullopt;
87	545	Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
88	545	wolfCrypt_detail::SetGlobalDs(&ds);
89
90	545	wolfCrypt_bignum::Bignum priv(ds), pub(ds);
91	545	uint8_t pub_bytes[CURVE25519_KEYSIZE];
92	545	uint8_t priv_bytes[CURVE25519_KEYSIZE];
93
94		/* Load private key */
95	545	{
96	545	CF_CHECK_EQ(priv.Set(op.priv.ToString(ds)), true);
97	493	CF_CHECK_TRUE(priv.ToBin(priv_bytes, sizeof(priv_bytes)));
98	467	priv_bytes[0] &= 248;
99	467	priv_bytes[31] &= 127;
100	467	priv_bytes[31] \|= 64;
101	467	}
102
103		/* Convert to public key */
104	0	{
105	467	WC_CHECK_EQ(wc_curve25519_make_pub(sizeof(pub_bytes), pub_bytes, sizeof(priv_bytes), priv_bytes), MP_OKAY);
106	276	}
107
108		/* Convert public key */
109	0	{
110	276	std::optional<std::string> pub_x_str;
111	276	CF_CHECK_EQ(mp_read_unsigned_bin(pub.GetPtr(), pub_bytes, sizeof(pub_bytes)), MP_OKAY);
112	257	CF_CHECK_NE(pub_x_str = pub.ToDecString(), std::nullopt);
113	254	ret = { *pub_x_str, "0" };
114	254	}
115
116	545	end:
117	545	wolfCrypt_detail::UnsetGlobalDs();
118	545	return ret;
119	254	}
120
121	156	std::optional<component::ECC_PublicKey> OpECC_PrivateToPublic_Ed25519(operation::ECC_PrivateToPublic& op) {
122	156	std::optional<component::ECC_PublicKey> ret = std::nullopt;
123	156	Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
124	156	wolfCrypt_detail::SetGlobalDs(&ds);
125
126	156	wolfCrypt_bignum::Bignum priv(ds), pub(ds);
127
128	156	ed25519_key key;
129	156	bool e25519_key_inited = false;
130
131	156	WC_CHECK_EQ(wc_ed25519_init(&key), 0);
132	156	e25519_key_inited = true;
133
134	156	CF_CHECK_EQ(ed25519LoadPrivateKey(key, op.priv, ds), true);
135	117	ret = ed25519GetPublicKey(key, ds);
136
137	156	end:
138	156	if ( e25519_key_inited == true ) {
139	156	wc_ed25519_free(&key);
140	156	}
141
142	156	wolfCrypt_detail::UnsetGlobalDs();
143	156	return ret;
144	117	}
145
146	0	std::optional<bool> OpECC_ValidatePubkey_Curve25519(operation::ECC_ValidatePubkey& op) {
147	0	std::optional<bool> ret = std::nullopt;
148	0	Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
149	0	wolfCrypt_detail::SetGlobalDs(&ds);
150
151	0	wolfCrypt_bignum::Bignum pub(ds);
152	0	uint8_t pub_bytes[CURVE25519_KEYSIZE];
153
154	0	CF_CHECK_EQ(pub.Set(op.pub.first.ToString(ds)), true);
155	0	CF_CHECK_TRUE(pub.ToBin(pub_bytes, sizeof(pub_bytes)));
156
157	0	haveAllocFailure = false;
158	0	ret = wc_curve25519_check_public(pub_bytes, sizeof(pub_bytes), EC25519_BIG_ENDIAN) == 0;
159	0	if ( *ret == false && haveAllocFailure == true ) {
160	0	ret = std::nullopt;
161	0	}
162
163	0	end:
164
165	0	wolfCrypt_detail::UnsetGlobalDs();
166	0	return ret;
167	0	}
168
169	0	std::optional<bool> OpECC_ValidatePubkey_Ed25519(operation::ECC_ValidatePubkey& op) {
170	0	std::optional<bool> ret = std::nullopt;
171	0	Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
172	0	wolfCrypt_detail::SetGlobalDs(&ds);
173
174	0	ed25519_key key;
175	0	bool e25519_key_inited = false;
176
177	0	WC_CHECK_EQ(wc_ed25519_init(&key), 0);
178	0	e25519_key_inited = true;
179
180	0	CF_CHECK_EQ(ed25519LoadPublicKey(key, op.pub.first, ds), true);
181
182	0	haveAllocFailure = false;
183	0	ret = wc_ed25519_check_key(&key) == 0;
184	0	if ( *ret == false && haveAllocFailure == true ) {
185	0	ret = std::nullopt;
186	0	}
187
188	0	end:
189	0	if ( e25519_key_inited == true ) {
190	0	wc_ed25519_free(&key);
191	0	}
192
193	0	wolfCrypt_detail::UnsetGlobalDs();
194	0	return ret;
195	0	}
196
197	691	std::optional<component::ECDSA_Signature> OpECDSA_Sign_ed25519(operation::ECDSA_Sign& op) {
198	691	std::optional<component::ECDSA_Signature> ret = std::nullopt;
199	691	Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
200	691	wolfCrypt_detail::SetGlobalDs(&ds);
201
202	691	ed25519_key key;
203	691	bool e25519_key_inited = false;
204	691	uint8_t sig[ED25519_SIG_SIZE];
205	691	word32 sigSz = sizeof(sig);
206
207	691	WC_CHECK_EQ(wc_ed25519_init(&key), 0);
208	691	e25519_key_inited = true;
209
210	691	CF_CHECK_EQ(wolfCrypt_detail::ed25519LoadPrivateKey(key, op.priv, ds), true);
211	666	CF_CHECK_EQ(wolfCrypt_detail::ed25519DerivePublicKey(key), true);
212
213		/* Sign message */
214	638	WC_CHECK_EQ(wc_ed25519_sign_msg(op.cleartext.GetPtr(), op.cleartext.GetSize(), sig, &sigSz, &key), MP_OKAY);
215	537	CF_CHECK_EQ(sigSz, ED25519_SIG_SIZE);
216	537	static_assert(ED25519_SIG_SIZE % 2 == 0);
217
218	537	{
219	537	std::optional<component::BignumPair> ret_sig;
220	537	std::optional<component::BignumPair> ret_pub;
221
222	537	CF_CHECK_NE(ret_sig = wolfCrypt_bignum::Bignum::BinToBignumPair(ds, sig, ED25519_SIG_SIZE), std::nullopt);
223	524	CF_CHECK_NE(ret_pub = wolfCrypt_detail::ed25519GetPublicKey(key, ds), std::nullopt);
224
225	511	ret = component::ECDSA_Signature(ret_sig, ret_pub);
226	511	}
227
228	691	end:
229	691	if ( e25519_key_inited == true ) {
230	691	wc_ed25519_free(&key);
231	691	}
232
233	691	wolfCrypt_detail::UnsetGlobalDs();
234	691	return ret;
235	511	}
236
237	1.02k	std::optional<bool> OpECDSA_Verify_ed25519(operation::ECDSA_Verify& op) {
238	1.02k	std::optional<bool> ret = std::nullopt;
239	1.02k	Datasource ds(op.modifier.GetPtr(), op.modifier.GetSize());
240	1.02k	wolfCrypt_detail::SetGlobalDs(&ds);
241
242	1.02k	ed25519_key key;
243	1.02k	bool e25519_key_inited = false;
244	1.02k	uint8_t ed25519sig[ED25519_SIG_SIZE];
245	1.02k	int verify;
246	1.02k	bool oneShot = true;
247	1.02k	bool haveEmptyPart = false;
248
249	1.02k	haveAllocFailure = false;
250	1.02k	ret = false;
251
252	1.02k	WC_CHECK_EQ(wc_ed25519_init(&key), 0);
253	1.02k	e25519_key_inited = true;
254
255	1.02k	CF_CHECK_EQ(ed25519LoadPublicKey(key, op.signature.pub.first, ds, true), true);
256	944	CF_CHECK_EQ(wolfCrypt_bignum::Bignum::ToBin(ds, op.signature.signature, ed25519sig, sizeof(ed25519sig), true), true);
257
258	895	#if defined(WOLFSSL_ED25519_STREAMING_VERIFY)
259	895	try { oneShot = ds.Get<bool>(); } catch ( ... ) { }
260	895	#endif
261
262	895	if ( oneShot == true ) {
263	573	WC_CHECK_EQ(wc_ed25519_verify_msg(ed25519sig, sizeof(ed25519sig), op.cleartext.GetPtr(), op.cleartext.GetSize(), &verify, &key), 0);
264	322	} else {
265		#if !defined(WOLFSSL_ED25519_STREAMING_VERIFY)
266		CF_UNREACHABLE();
267		#else
268	322	const auto parts = util::ToParts(ds, op.cleartext);
269
270	322	WC_CHECK_EQ(wc_ed25519_verify_msg_init(ed25519sig, sizeof(ed25519sig), &key, (byte)Ed25519, nullptr, 0), 0);
271
272	39.0k	for (const auto& part : parts) {
273	39.0k	if ( part.second == 0 ) {
274	38.1k	haveEmptyPart = true;
275	38.1k	}
276	39.0k	WC_CHECK_EQ(wc_ed25519_verify_msg_update(part.first, part.second, &key), 0);
277	39.0k	}
278
279	456	WC_CHECK_EQ(wc_ed25519_verify_msg_final(ed25519sig, sizeof(ed25519sig), &verify, &key), 0);
280	456	#endif
281	456	}
282
283	433	ret = verify ? true : false;
284
285	1.02k	end:
286	1.02k	if ( e25519_key_inited == true ) {
287	1.02k	wc_ed25519_free(&key);
288	1.02k	}
289
290	1.02k	wolfCrypt_detail::UnsetGlobalDs();
291
292	1.02k	if ( ret && *ret == false ) {
293	595	if ( haveAllocFailure ) {
294	148	ret = std::nullopt;
295	447	} else if ( haveEmptyPart ) {
296	68	ret = std::nullopt;
297	379	} else if ( op.cleartext.IsZero() ) {
298	37	ret = std::nullopt;
299	37	}
300
301	595	}
302	1.02k	return ret;
303	433	}
304
305		} /* namespace wolfCrypt_detail */
306		} /* namespace module */
307		} /* namespace cryptofuzz */