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C++ dump_digest函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中dump_digest函数的典型用法代码示例。如果您正苦于以下问题：C++ dump_digest函数的具体用法？C++ dump_digest怎么用？C++ dump_digest使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了dump_digest函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: kex_c25519_dec

int
kex_c25519_dec(struct kex *kex, const struct sshbuf *server_blob,
    struct sshbuf **shared_secretp)
{
	struct sshbuf *buf = NULL;
	const u_char *server_pub;
	int r;

	*shared_secretp = NULL;

	if (sshbuf_len(server_blob) != CURVE25519_SIZE) {
		r = SSH_ERR_SIGNATURE_INVALID;
		goto out;
	}
	server_pub = sshbuf_ptr(server_blob);
#ifdef DEBUG_KEXECDH
	dump_digest("server public key c25519:", server_pub, CURVE25519_SIZE);
#endif
	/* shared secret */
	if ((buf = sshbuf_new()) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	if ((r = kexc25519_shared_key_ext(kex->c25519_client_key, server_pub,
	    buf, 0)) < 0)
		goto out;
#ifdef DEBUG_KEXECDH
	dump_digest("encoded shared secret:", sshbuf_ptr(buf), sshbuf_len(buf));
#endif
	*shared_secretp = buf;
	buf = NULL;
 out:
	sshbuf_free(buf);
	return r;
}
开发者ID:mfriedl，项目名称:openssh，代码行数:35，代码来源:kexc25519.c


示例2: kex_c25519_enc

int
kex_c25519_enc(struct kex *kex, const struct sshbuf *client_blob,
   struct sshbuf **server_blobp, struct sshbuf **shared_secretp)
{
	struct sshbuf *server_blob = NULL;
	struct sshbuf *buf = NULL;
	const u_char *client_pub;
	u_char *server_pub;
	u_char server_key[CURVE25519_SIZE];
	int r;

	*server_blobp = NULL;
	*shared_secretp = NULL;

	if (sshbuf_len(client_blob) != CURVE25519_SIZE) {
		r = SSH_ERR_SIGNATURE_INVALID;
		goto out;
	}
	client_pub = sshbuf_ptr(client_blob);
#ifdef DEBUG_KEXECDH
	dump_digest("client public key 25519:", client_pub, CURVE25519_SIZE);
#endif
	/* allocate space for encrypted KEM key and ECDH pub key */
	if ((server_blob = sshbuf_new()) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	if ((r = sshbuf_reserve(server_blob, CURVE25519_SIZE, &server_pub)) != 0)
		goto out;
	kexc25519_keygen(server_key, server_pub);
	/* allocate shared secret */
	if ((buf = sshbuf_new()) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	if ((r = kexc25519_shared_key_ext(server_key, client_pub, buf, 0)) < 0)
		goto out;
#ifdef DEBUG_KEXECDH
	dump_digest("server public key 25519:", server_pub, CURVE25519_SIZE);
	dump_digest("encoded shared secret:", sshbuf_ptr(buf), sshbuf_len(buf));
#endif
	*server_blobp = server_blob;
	*shared_secretp = buf;
	server_blob = NULL;
	buf = NULL;
 out:
	explicit_bzero(server_key, sizeof(server_key));
	sshbuf_free(server_blob);
	sshbuf_free(buf);
	return r;
}
开发者ID:mfriedl，项目名称:openssh，代码行数:51，代码来源:kexc25519.c


示例3: kexc25519_shared_key

int
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out)
{
	u_char shared_key[CURVE25519_SIZE];
	int r;

#ifdef USING_WOLFSSL
    int ret, ssize = CURVE25519_SIZE;
    ret = wolfSSL_EC25519_shared_key(shared_key, &ssize,
                                     key, CURVE25519_SIZE,
                                     pub, CURVE25519_SIZE);
    if (ret != 1 || ssize != CURVE25519_SIZE)
        fatal("%s: wolfSSL_EC25519_shared_key failed", __func__);
#else
	/* Check for all-zero public key */
	explicit_bzero(shared_key, CURVE25519_SIZE);
	if (timingsafe_bcmp(pub, shared_key, CURVE25519_SIZE) == 0)
		return SSH_ERR_KEY_INVALID_EC_VALUE;

	crypto_scalarmult_curve25519(shared_key, key, pub);
#endif /* USING_WOLFSSL */
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	sshbuf_reset(out);
	r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}
开发者ID:kaleb-himes，项目名称:openssh-portable，代码行数:30，代码来源:kexc25519.c


示例4: kexc25519_shared_key_ext

int
kexc25519_shared_key_ext(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out, int raw)
{
	u_char shared_key[CURVE25519_SIZE];
	u_char zero[CURVE25519_SIZE];
	int r;

	crypto_scalarmult_curve25519(shared_key, key, pub);

	/* Check for all-zero shared secret */
	explicit_bzero(zero, CURVE25519_SIZE);
	if (timingsafe_bcmp(zero, shared_key, CURVE25519_SIZE) == 0)
		return SSH_ERR_KEY_INVALID_EC_VALUE;

#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	if (raw)
		r = sshbuf_put(out, shared_key, CURVE25519_SIZE);
	else
		r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}
开发者ID:mfriedl，项目名称:openssh，代码行数:25，代码来源:kexc25519.c


示例5: kexgex_hash

int
kexgex_hash(
    int hash_alg,
    const char *client_version_string,
    const char *server_version_string,
    const u_char *ckexinit, size_t ckexinitlen,
    const u_char *skexinit, size_t skexinitlen,
    const u_char *serverhostkeyblob, size_t sbloblen,
    int min, int wantbits, int max,
    const BIGNUM *prime,
    const BIGNUM *gen,
    const BIGNUM *client_dh_pub,
    const BIGNUM *server_dh_pub,
    const BIGNUM *shared_secret,
    u_char **hash, size_t *hashlen)
{
	struct sshbuf *b;
	static u_char digest[SSH_DIGEST_MAX_LENGTH];
	int r;

	if ((b = sshbuf_new()) == NULL)
		return SSH_ERR_ALLOC_FAIL;
	if ((r = sshbuf_put_cstring(b, client_version_string)) != 0 ||
	    (r = sshbuf_put_cstring(b, server_version_string)) != 0 ||
	    /* kexinit messages: fake header: len+SSH2_MSG_KEXINIT */
	    (r = sshbuf_put_u32(b, ckexinitlen+1)) != 0 ||
	    (r = sshbuf_put_u8(b, SSH2_MSG_KEXINIT)) != 0 ||
	    (r = sshbuf_put(b, ckexinit, ckexinitlen)) != 0 ||
	    (r = sshbuf_put_u32(b, skexinitlen+1)) != 0 ||
	    (r = sshbuf_put_u8(b, SSH2_MSG_KEXINIT)) != 0 ||
	    (r = sshbuf_put(b, skexinit, skexinitlen)) != 0 ||
	    (r = sshbuf_put_string(b, serverhostkeyblob, sbloblen)) != 0 ||
	    (min != -1 && (r = sshbuf_put_u32(b, min)) != 0) ||
	    (r = sshbuf_put_u32(b, wantbits)) != 0 ||
	    (max != -1 && (r = sshbuf_put_u32(b, max)) != 0) ||
	    (r = sshbuf_put_bignum2(b, prime)) != 0 ||
	    (r = sshbuf_put_bignum2(b, gen)) != 0 ||
	    (r = sshbuf_put_bignum2(b, client_dh_pub)) != 0 ||
	    (r = sshbuf_put_bignum2(b, server_dh_pub)) != 0 ||
	    (r = sshbuf_put_bignum2(b, shared_secret)) != 0) {
		sshbuf_free(b);
		return r;
	}
#ifdef DEBUG_KEXDH
	sshbuf_dump(b, stderr);
#endif
	if (ssh_digest_buffer(hash_alg, b, digest, sizeof(digest)) != 0) {
		sshbuf_free(b);
		return SSH_ERR_LIBCRYPTO_ERROR;
	}
	sshbuf_free(b);

	*hash = digest;
	*hashlen = ssh_digest_bytes(hash_alg);
#ifdef DEBUG_KEXDH
	dump_digest("hash", digest, *hashlen);
#endif
	return 0;
}
开发者ID:djmdjm，项目名称:libopenssh，代码行数:59，代码来源:kexgex.c


示例6: kexgex_hash

void
kexgex_hash(
    int hash_alg,
    char *client_version_string,
    char *server_version_string,
    char *ckexinit, int ckexinitlen,
    char *skexinit, int skexinitlen,
    u_char *serverhostkeyblob, int sbloblen,
    int min, int wantbits, int max, BIGNUM *prime, BIGNUM *gen,
    BIGNUM *client_dh_pub,
    BIGNUM *server_dh_pub,
    BIGNUM *shared_secret,
    u_char **hash, u_int *hashlen)
{
	Buffer b;
	static u_char digest[SSH_DIGEST_MAX_LENGTH];

	buffer_init(&b);
	buffer_put_cstring(&b, client_version_string);
	buffer_put_cstring(&b, server_version_string);

	/* kexinit messages: fake header: len+SSH2_MSG_KEXINIT */
	buffer_put_int(&b, ckexinitlen+1);
	buffer_put_char(&b, SSH2_MSG_KEXINIT);
	buffer_append(&b, ckexinit, ckexinitlen);
	buffer_put_int(&b, skexinitlen+1);
	buffer_put_char(&b, SSH2_MSG_KEXINIT);
	buffer_append(&b, skexinit, skexinitlen);

	buffer_put_string(&b, serverhostkeyblob, sbloblen);
	if (min == -1 || max == -1)
		buffer_put_int(&b, wantbits);
	else {
		buffer_put_int(&b, min);
		buffer_put_int(&b, wantbits);
		buffer_put_int(&b, max);
	}
	buffer_put_bignum2(&b, prime);
	buffer_put_bignum2(&b, gen);
	buffer_put_bignum2(&b, client_dh_pub);
	buffer_put_bignum2(&b, server_dh_pub);
	buffer_put_bignum2(&b, shared_secret);

#ifdef DEBUG_KEXDH
	buffer_dump(&b);
#endif
	if (ssh_digest_buffer(hash_alg, &b, digest, sizeof(digest)) != 0)
		fatal("%s: ssh_digest_buffer failed", __func__);

	buffer_free(&b);

#ifdef DEBUG_KEX
	dump_digest("hash", digest, ssh_digest_bytes(hash_alg));
#endif
	*hash = digest;
	*hashlen = ssh_digest_bytes(hash_alg);
}
开发者ID:0x0mar，项目名称:backdoored-ssh，代码行数:57，代码来源:kexgex.c


示例7: kex_ecdh_hash

int
kex_ecdh_hash(
    const EVP_MD *evp_md,
    const EC_GROUP *ec_group,
    const char *client_version_string,
    const char *server_version_string,
    const u_char *ckexinit, size_t ckexinitlen,
    const u_char *skexinit, size_t skexinitlen,
    const u_char *serverhostkeyblob, size_t sbloblen,
    const EC_POINT *client_dh_pub,
    const EC_POINT *server_dh_pub,
    const BIGNUM *shared_secret,
    u_char **hash, size_t *hashlen)
{
	struct sshbuf *b;
	EVP_MD_CTX md;
	static u_char digest[EVP_MAX_MD_SIZE];
	int r;

	if ((b = sshbuf_new()) == NULL)
		return SSH_ERR_ALLOC_FAIL;
	if ((r = sshbuf_put_cstring(b, client_version_string)) != 0 ||
	    (r = sshbuf_put_cstring(b, server_version_string)) != 0 ||
	    /* kexinit messages: fake header: len+SSH2_MSG_KEXINIT */
	    (r = sshbuf_put_u32(b, ckexinitlen+1)) != 0 ||
	    (r = sshbuf_put_u8(b, SSH2_MSG_KEXINIT)) != 0 ||
	    (r = sshbuf_put(b, ckexinit, ckexinitlen)) != 0 ||
	    (r = sshbuf_put_u32(b, skexinitlen+1)) != 0 ||
	    (r = sshbuf_put_u8(b, SSH2_MSG_KEXINIT)) != 0 ||
	    (r = sshbuf_put(b, skexinit, skexinitlen)) != 0 ||
	    (r = sshbuf_put_string(b, serverhostkeyblob, sbloblen)) != 0 ||
	    (r = sshbuf_put_ec(b, client_dh_pub, ec_group)) != 0 ||
	    (r = sshbuf_put_ec(b, server_dh_pub, ec_group)) != 0 ||
	    (r = sshbuf_put_bignum2(b, shared_secret)) != 0) {
		sshbuf_free(b);
		return r;
	}
#ifdef DEBUG_KEX
	sshbuf_dump(b, stderr);
#endif
	if (EVP_DigestInit(&md, evp_md) != 1 ||
	    EVP_DigestUpdate(&md, sshbuf_ptr(b), sshbuf_len(b)) != 1 ||
	    EVP_DigestFinal(&md, digest, NULL) != 1) {
		sshbuf_free(b);
		return SSH_ERR_LIBCRYPTO_ERROR;
	}
	sshbuf_free(b);
#ifdef DEBUG_KEX
	dump_digest("hash", digest, EVP_MD_size(evp_md));
#endif
	*hash = digest;
	*hashlen = EVP_MD_size(evp_md);
	return 0;
}
开发者ID:hshoexer，项目名称:libopenssh，代码行数:54，代码来源:kexecdh.c


示例8: derive_key

static u_char *
derive_key(Kex *kex, int id, u_int need, u_char *hash, u_int hashlen,
    const u_char *shared_secret, u_int slen)
{
	Buffer b;
	struct ssh_digest_ctx *hashctx;
	char c = id;
	u_int have;
	size_t mdsz;
	u_char *digest;

	if ((mdsz = ssh_digest_bytes(kex->hash_alg)) == 0)
		fatal("bad kex md size %zu", mdsz);
	digest = xmalloc(roundup(need, mdsz));

	buffer_init(&b);
	buffer_append(&b, shared_secret, slen);

	/* K1 = HASH(K || H || "A" || session_id) */
	if ((hashctx = ssh_digest_start(kex->hash_alg)) == NULL)
		fatal("%s: ssh_digest_start failed", __func__);
	if (ssh_digest_update_buffer(hashctx, &b) != 0 ||
	    ssh_digest_update(hashctx, hash, hashlen) != 0 ||
	    ssh_digest_update(hashctx, &c, 1) != 0 ||
	    ssh_digest_update(hashctx, kex->session_id,
	    kex->session_id_len) != 0)
		fatal("%s: ssh_digest_update failed", __func__);
	if (ssh_digest_final(hashctx, digest, mdsz) != 0)
		fatal("%s: ssh_digest_final failed", __func__);
	ssh_digest_free(hashctx);

	/*
	 * expand key:
	 * Kn = HASH(K || H || K1 || K2 || ... || Kn-1)
	 * Key = K1 || K2 || ... || Kn
	 */
	for (have = mdsz; need > have; have += mdsz) {
		if ((hashctx = ssh_digest_start(kex->hash_alg)) == NULL)
			fatal("%s: ssh_digest_start failed", __func__);
		if (ssh_digest_update_buffer(hashctx, &b) != 0 ||
		    ssh_digest_update(hashctx, hash, hashlen) != 0 ||
		    ssh_digest_update(hashctx, digest, have) != 0)
			fatal("%s: ssh_digest_update failed", __func__);
		if (ssh_digest_final(hashctx, digest + have, mdsz) != 0)
			fatal("%s: ssh_digest_final failed", __func__);
		ssh_digest_free(hashctx);
	}
	buffer_free(&b);
#ifdef DEBUG_KEX
	fprintf(stderr, "key '%c'== ", c);
	dump_digest("key", digest, need);
#endif
	return digest;
}
开发者ID:OpenKod，项目名称:src，代码行数:54，代码来源:kex.c


示例9: kex_ecdh_hash

int
kex_ecdh_hash(
    int hash_alg,
    const EC_GROUP *ec_group,
    const char *client_version_string,
    const char *server_version_string,
    const u_char *ckexinit, size_t ckexinitlen,
    const u_char *skexinit, size_t skexinitlen,
    const u_char *serverhostkeyblob, size_t sbloblen,
    const EC_POINT *client_dh_pub,
    const EC_POINT *server_dh_pub,
    const BIGNUM *shared_secret,
    u_char *hash, size_t *hashlen)
{
	struct sshbuf *b;
	int r;

	if (*hashlen < ssh_digest_bytes(hash_alg))
		return SSH_ERR_INVALID_ARGUMENT;
	if ((b = sshbuf_new()) == NULL)
		return SSH_ERR_ALLOC_FAIL;
	if ((r = sshbuf_put_cstring(b, client_version_string)) != 0 ||
	    (r = sshbuf_put_cstring(b, server_version_string)) != 0 ||
	    /* kexinit messages: fake header: len+SSH2_MSG_KEXINIT */
	    (r = sshbuf_put_u32(b, ckexinitlen+1)) != 0 ||
	    (r = sshbuf_put_u8(b, SSH2_MSG_KEXINIT)) != 0 ||
	    (r = sshbuf_put(b, ckexinit, ckexinitlen)) != 0 ||
	    (r = sshbuf_put_u32(b, skexinitlen+1)) != 0 ||
	    (r = sshbuf_put_u8(b, SSH2_MSG_KEXINIT)) != 0 ||
	    (r = sshbuf_put(b, skexinit, skexinitlen)) != 0 ||
	    (r = sshbuf_put_string(b, serverhostkeyblob, sbloblen)) != 0 ||
	    (r = sshbuf_put_ec(b, client_dh_pub, ec_group)) != 0 ||
	    (r = sshbuf_put_ec(b, server_dh_pub, ec_group)) != 0 ||
	    (r = sshbuf_put_bignum2(b, shared_secret)) != 0) {
		sshbuf_free(b);
		return r;
	}
#ifdef DEBUG_KEX
	sshbuf_dump(b, stderr);
#endif
	if (ssh_digest_buffer(hash_alg, b, hash, *hashlen) != 0) {
		sshbuf_free(b);
		return SSH_ERR_LIBCRYPTO_ERROR;
	}
	sshbuf_free(b);
	*hashlen = ssh_digest_bytes(hash_alg);
#ifdef DEBUG_KEX
	dump_digest("hash", hash, *hashlen);
#endif
	return 0;
}
开发者ID:ajinkya93，项目名称:OpenBSD，代码行数:51，代码来源:kexecdh.c


示例10: kexc25519_shared_key

void
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], Buffer *out)
{
	u_char shared_key[CURVE25519_SIZE];

	crypto_scalarmult_curve25519(shared_key, key, pub);
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	buffer_clear(out);
	buffer_put_bignum2_from_string(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
}
开发者ID:appleorange1，项目名称:bitrig，代码行数:14，代码来源:kexc25519.c


示例11: kexc25519_shared_key

int
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out)
{
	u_char shared_key[CURVE25519_SIZE];
	int r;

	crypto_scalarmult_curve25519(shared_key, key, pub);
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	sshbuf_reset(out);
	r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}
开发者ID:CTSRD-SOAAP，项目名称:openssh-portable，代码行数:16，代码来源:kexc25519.c


示例12: kex_dh_hash

static u_char *
kex_dh_hash(
    char *client_version_string,
    char *server_version_string,
    char *ckexinit, int ckexinitlen,
    char *skexinit, int skexinitlen,
    u_char *serverhostkeyblob, int sbloblen,
    BIGNUM *client_dh_pub,
    BIGNUM *server_dh_pub,
    BIGNUM *shared_secret)
{
	Buffer b;
	static u_char digest[EVP_MAX_MD_SIZE];
	const EVP_MD *evp_md = EVP_sha1();
	EVP_MD_CTX md;

	buffer_init(&b);
	buffer_put_cstring(&b, client_version_string);
	buffer_put_cstring(&b, server_version_string);

	/* kexinit messages: fake header: len+SSH2_MSG_KEXINIT */
	buffer_put_int(&b, ckexinitlen+1);
	buffer_put_char(&b, SSH2_MSG_KEXINIT);
	buffer_append(&b, ckexinit, ckexinitlen);
	buffer_put_int(&b, skexinitlen+1);
	buffer_put_char(&b, SSH2_MSG_KEXINIT);
	buffer_append(&b, skexinit, skexinitlen);

	buffer_put_string(&b, serverhostkeyblob, sbloblen);
	buffer_put_bignum2(&b, client_dh_pub);
	buffer_put_bignum2(&b, server_dh_pub);
	buffer_put_bignum2(&b, shared_secret);

#ifdef DEBUG_KEX
	buffer_dump(&b);
#endif
	EVP_DigestInit(&md, evp_md);
	EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
	EVP_DigestFinal(&md, digest, NULL);

	buffer_free(&b);

#ifdef DEBUG_KEX
	dump_digest("hash", digest, EVP_MD_size(evp_md));
#endif
	return digest;
}
开发者ID:chromium-googlesource-mirror，项目名称:sctp-refimpl，代码行数:47，代码来源:kexdh.c


示例13: derive_key

static u_char *
derive_key(Kex *kex, int id, u_int need, u_char *hash, u_int hashlen,
    BIGNUM *shared_secret)
{
	Buffer b;
	EVP_MD_CTX md;
	char c = id;
	u_int have;
	int mdsz;
	u_char *digest;

	if ((mdsz = EVP_MD_size(kex->evp_md)) <= 0)
		fatal("bad kex md size %d", mdsz);
	digest = xmalloc(roundup(need, mdsz));

	buffer_init(&b);
	buffer_put_bignum2(&b, shared_secret);

	/* K1 = HASH(K || H || "A" || session_id) */
	EVP_DigestInit(&md, kex->evp_md);
	if (!(datafellows & SSH_BUG_DERIVEKEY))
		EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
	EVP_DigestUpdate(&md, hash, hashlen);
	EVP_DigestUpdate(&md, &c, 1);
	EVP_DigestUpdate(&md, kex->session_id, kex->session_id_len);
	EVP_DigestFinal(&md, digest, NULL);

	/*
	 * expand key:
	 * Kn = HASH(K || H || K1 || K2 || ... || Kn-1)
	 * Key = K1 || K2 || ... || Kn
	 */
	for (have = mdsz; need > have; have += mdsz) {
		EVP_DigestInit(&md, kex->evp_md);
		if (!(datafellows & SSH_BUG_DERIVEKEY))
			EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
		EVP_DigestUpdate(&md, hash, hashlen);
		EVP_DigestUpdate(&md, digest, have);
		EVP_DigestFinal(&md, digest + have, NULL);
	}
	buffer_free(&b);
#ifdef DEBUG_KEX
	fprintf(stderr, "key '%c'== ", c);
	dump_digest("key", digest, need);
#endif
	return digest;
}
开发者ID:2014-class，项目名称:freerouter，代码行数:47，代码来源:kex.c


示例14: kex_c25519_hash

void
kex_c25519_hash(
    int hash_alg,
    char *client_version_string,
    char *server_version_string,
    char *ckexinit, int ckexinitlen,
    char *skexinit, int skexinitlen,
    u_char *serverhostkeyblob, int sbloblen,
    const u_char client_dh_pub[CURVE25519_SIZE],
    const u_char server_dh_pub[CURVE25519_SIZE],
    const u_char *shared_secret, u_int secretlen,
    u_char **hash, u_int *hashlen)
{
	Buffer b;
	static u_char digest[SSH_DIGEST_MAX_LENGTH];

	buffer_init(&b);
	buffer_put_cstring(&b, client_version_string);
	buffer_put_cstring(&b, server_version_string);

	/* kexinit messages: fake header: len+SSH2_MSG_KEXINIT */
	buffer_put_int(&b, ckexinitlen+1);
	buffer_put_char(&b, SSH2_MSG_KEXINIT);
	buffer_append(&b, ckexinit, ckexinitlen);
	buffer_put_int(&b, skexinitlen+1);
	buffer_put_char(&b, SSH2_MSG_KEXINIT);
	buffer_append(&b, skexinit, skexinitlen);

	buffer_put_string(&b, serverhostkeyblob, sbloblen);
	buffer_put_string(&b, client_dh_pub, CURVE25519_SIZE);
	buffer_put_string(&b, server_dh_pub, CURVE25519_SIZE);
	buffer_append(&b, shared_secret, secretlen);

#ifdef DEBUG_KEX
	buffer_dump(&b);
#endif
	if (ssh_digest_buffer(hash_alg, &b, digest, sizeof(digest)) != 0)
		fatal("%s: digest_buffer failed", __func__);

	buffer_free(&b);

#ifdef DEBUG_KEX
	dump_digest("hash", digest, ssh_digest_bytes(hash_alg));
#endif
	*hash = digest;
	*hashlen = ssh_digest_bytes(hash_alg);
}
开发者ID:appleorange1，项目名称:bitrig，代码行数:47，代码来源:kexc25519.c


示例15: kex_c25519_keypair

int
kex_c25519_keypair(struct kex *kex)
{
	struct sshbuf *buf = NULL;
	u_char *cp = NULL;
	int r;

	if ((buf = sshbuf_new()) == NULL)
		return SSH_ERR_ALLOC_FAIL;
	if ((r = sshbuf_reserve(buf, CURVE25519_SIZE, &cp)) != 0)
		goto out;
	kexc25519_keygen(kex->c25519_client_key, cp);
#ifdef DEBUG_KEXECDH
	dump_digest("client public key c25519:", cp, CURVE25519_SIZE);
#endif
	kex->client_pub = buf;
	buf = NULL;
 out:
	sshbuf_free(buf);
	return r;
}
开发者ID:mfriedl，项目名称:openssh，代码行数:21，代码来源:kexc25519.c


示例16: kexc25519_shared_key

int
kexc25519_shared_key(const u_char key[CURVE25519_SIZE],
    const u_char pub[CURVE25519_SIZE], struct sshbuf *out)
{
	u_char shared_key[CURVE25519_SIZE];
	int r;

	/* Check for all-zero public key */
	explicit_bzero(shared_key, CURVE25519_SIZE);
	if (timingsafe_bcmp(pub, shared_key, CURVE25519_SIZE) == 0)
		return SSH_ERR_KEY_INVALID_EC_VALUE;

	crypto_scalarmult_curve25519(shared_key, key, pub);
#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", shared_key, CURVE25519_SIZE);
#endif
	sshbuf_reset(out);
	r = sshbuf_put_bignum2_bytes(out, shared_key, CURVE25519_SIZE);
	explicit_bzero(shared_key, CURVE25519_SIZE);
	return r;
}
开发者ID:1174533476，项目名称:Win32-OpenSSH，代码行数:21，代码来源:kexc25519.c


示例17: kexc25519_client

int
kexc25519_client(struct ssh *ssh)
{
	struct kex *kex = ssh->kex;
	int r;

	kexc25519_keygen(kex->c25519_client_key, kex->c25519_client_pubkey);
#ifdef DEBUG_KEXECDH
	dump_digest("client private key:", kex->c25519_client_key,
	     sizeof(kex->c25519_client_key));
#endif
	if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_ECDH_INIT)) != 0 ||
	    (r = sshpkt_put_string(ssh, kex->c25519_client_pubkey,
	    sizeof(kex->c25519_client_pubkey))) != 0 ||
	    (r = sshpkt_send(ssh)) != 0)
		return r;

	debug("expecting SSH2_MSG_KEX_ECDH_REPLY");
	ssh_dispatch_set(ssh, SSH2_MSG_KEX_ECDH_REPLY, &input_kex_c25519_reply);
	return 0;
}
开发者ID:djmdjm，项目名称:libopenssh，代码行数:21，代码来源:kexc25519c.c


示例18: input_kex_ecdh_reply

static int
input_kex_ecdh_reply(int type, u_int32_t seq, void *ctxt)
{
	struct ssh *ssh = ctxt;
	struct kex *kex = ssh->kex;
	const EC_GROUP *group;
	EC_POINT *server_public = NULL;
	EC_KEY *client_key;
	BIGNUM *shared_secret = NULL;
	struct sshkey *server_host_key = NULL;
	u_char *server_host_key_blob = NULL, *signature = NULL;
	u_char *kbuf = NULL;
	u_char hash[SSH_DIGEST_MAX_LENGTH];
	size_t slen, sbloblen;
	size_t klen = 0, hashlen;
	int r;

	if (kex->verify_host_key == NULL) {
		r = SSH_ERR_INVALID_ARGUMENT;
		goto out;
	}
	group = kex->ec_group;
	client_key = kex->ec_client_key;

	/* hostkey */
	if ((r = sshpkt_get_string(ssh, &server_host_key_blob,
	    &sbloblen)) != 0 ||
	    (r = sshkey_from_blob(server_host_key_blob, sbloblen,
	    &server_host_key)) != 0)
		goto out;
	if (server_host_key->type != kex->hostkey_type ||
	    (kex->hostkey_type == KEY_ECDSA &&
	    server_host_key->ecdsa_nid != kex->hostkey_nid)) {
		r = SSH_ERR_KEY_TYPE_MISMATCH;
		goto out;
	}
	if (kex->verify_host_key(server_host_key, ssh) == -1) {
		r = SSH_ERR_SIGNATURE_INVALID;
		goto out;
	}

	/* Q_S, server public key */
	/* signed H */
	if ((server_public = EC_POINT_new(group)) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	if ((r = sshpkt_get_ec(ssh, server_public, group)) != 0 ||
	    (r = sshpkt_get_string(ssh, &signature, &slen)) != 0 ||
	    (r = sshpkt_get_end(ssh)) != 0)
		goto out;

#ifdef DEBUG_KEXECDH
	fputs("server public key:\n", stderr);
	sshkey_dump_ec_point(group, server_public);
#endif
	if (sshkey_ec_validate_public(group, server_public) != 0) {
		sshpkt_disconnect(ssh, "invalid server public key");
		r = SSH_ERR_MESSAGE_INCOMPLETE;
		goto out;
	}

	klen = (EC_GROUP_get_degree(group) + 7) / 8;
	if ((kbuf = malloc(klen)) == NULL ||
	    (shared_secret = BN_new()) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	if (ECDH_compute_key(kbuf, klen, server_public,
	    client_key, NULL) != (int)klen ||
	    BN_bin2bn(kbuf, klen, shared_secret) == NULL) {
		r = SSH_ERR_LIBCRYPTO_ERROR;
		goto out;
	}

#ifdef DEBUG_KEXECDH
	dump_digest("shared secret", kbuf, klen);
#endif
	/* calc and verify H */
	hashlen = sizeof(hash);
	if ((r = kex_ecdh_hash(
	    kex->hash_alg,
	    group,
	    kex->client_version_string,
	    kex->server_version_string,
	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
	    sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
	    server_host_key_blob, sbloblen,
	    EC_KEY_get0_public_key(client_key),
	    server_public,
	    shared_secret,
	    hash, &hashlen)) != 0)
		goto out;

	if ((r = sshkey_verify(server_host_key, signature, slen, hash,
	    hashlen, ssh->compat)) != 0)
		goto out;

	/* save session id */
	if (kex->session_id == NULL) {
//.........这里部分代码省略.........
开发者ID:randombit，项目名称:hacrypto，代码行数:101，代码来源:kexecdhc.c


示例19: input_kex_dh_gex_reply

static int
input_kex_dh_gex_reply(int type, u_int32_t seq, struct ssh *ssh)
{
	Kex *kex = ssh->kex;
	BIGNUM *dh_server_pub = NULL, *shared_secret = NULL;
	struct sshkey *server_host_key;
	u_char *kbuf = NULL, *hash, *signature = NULL, *server_host_key_blob = NULL;
	size_t klen = 0, slen, sbloblen, hashlen;
	int kout, r;

	debug("got SSH2_MSG_KEX_DH_GEX_REPLY");
	if (kex->verify_host_key == NULL) {
		r = SSH_ERR_INVALID_ARGUMENT;
		goto out;
	}
	/* key, cert */
	if ((r = sshpkt_get_string(ssh, &server_host_key_blob,
	    &sbloblen)) != 0 ||
	    (r = sshkey_from_blob(server_host_key_blob, sbloblen,
	    &server_host_key)) != 0)
		goto out;
	if (server_host_key->type != kex->hostkey_type) {
		r = SSH_ERR_KEY_TYPE_MISMATCH;
		goto out;
	}
	if (kex->verify_host_key(server_host_key, ssh) == -1) {
		r = SSH_ERR_SIGNATURE_INVALID;
		goto out;
	}
	/* DH parameter f, server public DH key */
	if ((dh_server_pub = BN_new()) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	/* signed H */
	if ((r = sshpkt_get_bignum2(ssh, dh_server_pub)) != 0 ||
	    (r = sshpkt_get_string(ssh, &signature, &slen)) != 0 ||
	    (r = sshpkt_get_end(ssh)) != 0)
		goto out;
#ifdef DEBUG_KEXDH
	fprintf(stderr, "dh_server_pub= ");
	BN_print_fp(stderr, dh_server_pub);
	fprintf(stderr, "\n");
	debug("bits %d", BN_num_bits(dh_server_pub));
#endif
	if (!dh_pub_is_valid(kex->dh, dh_server_pub)) {
		sshpkt_disconnect(ssh, "bad server public DH value");
		r = SSH_ERR_MESSAGE_INCOMPLETE;
		goto out;
	}

	klen = DH_size(kex->dh);
	if ((kbuf = malloc(klen)) == NULL ||
	    (shared_secret = BN_new()) == NULL) {
		r = SSH_ERR_ALLOC_FAIL;
		goto out;
	}
	if ((kout = DH_compute_key(kbuf, dh_server_pub, kex->dh)) < 0 ||
	    BN_bin2bn(kbuf, kout, shared_secret) == NULL) {
		r = SSH_ERR_LIBCRYPTO_ERROR;
		goto out;
	}
#ifdef DEBUG_KEXDH
	dump_digest("shared secret", kbuf, kout);
#endif
	if (ssh->compat & SSH_OLD_DHGEX)
		kex->min = kex->max = -1;

	/* calc and verify H */
	if ((r = kexgex_hash(
	    kex->evp_md,
	    kex->client_version_string,
	    kex->server_version_string,
	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
	    sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
	    server_host_key_blob, sbloblen,
	    kex->min, kex->nbits, kex->max,
	    kex->dh->p, kex->dh->g,
	    kex->dh->pub_key,
	    dh_server_pub,
	    shared_secret,
	    &hash, &hashlen)) != 0)
		goto out;

	if ((r = sshkey_verify(server_host_key, signature, slen, hash,
	    hashlen, ssh->compat)) != 0)
		goto out;

	/* save session id */
	if (kex->session_id == NULL) {
		kex->session_id_len = hashlen;
		kex->session_id = malloc(kex->session_id_len);
		if (kex->session_id == NULL) {
			r = SSH_ERR_ALLOC_FAIL;
			goto out;
		}
		memcpy(kex->session_id, hash, kex->session_id_len);
	}

	if ((r = kex_derive_keys(ssh, hash, hashlen, shared_secret)) == 0)
//.........这里部分代码省略.........
开发者ID:mpitzl，项目名称:libopenssh，代码行数:101，代码来源:kexgexc.c


示例20: kexdh_client

void
kexdh_client(Kex *kex)
{
	BIGNUM *dh_server_pub = NULL, *shared_secret = NULL;
	DH *dh;
	Key *server_host_key;
	u_char *server_host_key_blob = NULL, *signature = NULL;
	u_char *kbuf, *hash;
	u_int klen, slen, sbloblen, hashlen;
	int kout;

	/* generate and send 'e', client DH public key */
	switch (kex->kex_type) {
	case KEX_DH_GRP1_SHA1:
		dh = dh_new_group1();
		break;
	case KEX_DH_GRP14_SHA1:
		dh = dh_new_group14();
		break;
	default:
		fatal("%s: Unexpected KEX type %d", __func__, kex->kex_type);
	}
	dh_gen_key(dh, kex->we_need * 8);
	packet_start(SSH2_MSG_KEXDH_INIT);
	packet_put_bignum2(dh->pub_key);
	packet_send();

	debug("sending SSH2_MSG_KEXDH_INIT");
#ifdef DEBUG_KEXDH
	DHparams_print_fp(stderr, dh);
	fprintf(stderr, "pub= ");
	BN_print_fp(stderr, dh->pub_key);
	fprintf(stderr, "\n");
#endif

	debug("expecting SSH2_MSG_KEXDH_REPLY");
	packet_read_expect(SSH2_MSG_KEXDH_REPLY);

	/* key, cert */
	server_host_key_blob = packet_get_string(&sbloblen);
	server_host_key = key_from_blob(server_host_key_blob, sbloblen);
	if (server_host_key == NULL)
		fatal("cannot decode server_host_key_blob");
	if (server_host_key->type != kex->hostkey_type)
		fatal("type mismatch for decoded server_host_key_blob");
	if (kex->verify_host_key == NULL)
		fatal("cannot verify server_host_key");
	if (kex->verify_host_key(server_host_key) == -1)
		fatal("server_host_key verification failed");

	/* DH parameter f, server public DH key */
	if ((dh_server_pub = BN_new()) == NULL)
		fatal("dh_server_pub == NULL");
	packet_get_bignum2(dh_server_pub);

#ifdef DEBUG_KEXDH
	fprintf(stderr, "dh_server_pub= ");
	BN_print_fp(stderr, dh_server_pub);
	fprintf(stderr, "\n");
	debug("bits %d", BN_num_bits(dh_server_pub));
#endif

	/* signed H */
	signature = packet_get_string(&slen);
	packet_check_eom();

	if (!dh_pub_is_valid(dh, dh_server_pub))
		packet_disconnect("bad server public DH value");

	klen = DH_size(dh);
	kbuf = xmalloc(klen);
	if ((kout = DH_compute_key(kbuf, dh_server_pub, dh)) < 0)
		fatal("DH_compute_key: failed");
#ifdef DEBUG_KEXDH
	dump_digest("shared secret", kbuf, kout);
#endif
	if ((shared_secret = BN_new()) == NULL)
		fatal("kexdh_client: BN_new failed");
	if (BN_bin2bn(kbuf, kout, shared_secret) == NULL)
		fatal("kexdh_client: BN_bin2bn failed");
	memset(kbuf, 0, klen);
	free(kbuf);

	/* calc and verify H */
	kex_dh_hash(
	    kex->client_version_string,
	    kex->server_version_string,
	    buffer_ptr(&kex->my), buffer_len(&kex->my),
	    buffer_ptr(&kex->peer), buffer_len(&kex->peer),
	    server_host_key_blob, sbloblen,
	    dh->pub_key,
	    dh_server_pub,
	    shared_secret,
	    &hash, &hashlen
	);
	free(server_host_key_blob);
	BN_clear_free(dh_server_pub);
	DH_free(dh);

	if (key_verify(server_host_key, signature, slen, hash, hashlen) != 1)
//.........这里部分代码省略.........
开发者ID:lbdroid，项目名称:openssh，代码行数:101，代码来源:kexdhc.c



注：本文中的dump_digest函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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