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C++ crypto_hash_digestsize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crypto_hash_digestsize函数的典型用法代码示例。如果您正苦于以下问题：C++ crypto_hash_digestsize函数的具体用法？C++ crypto_hash_digestsize怎么用？C++ crypto_hash_digestsize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crypto_hash_digestsize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: finalize_hash

static int
finalize_hash (struct hash_desc *desc, unsigned char * out, unsigned int out_size)
{
	int ret = -1;

	if (!desc || !desc->tfm || !out || !out_size)
	{
		printk(KERN_ERR "FIPS(%s): Invalid args", __FUNCTION__);		
		return ret;
	}

	if (crypto_hash_digestsize(desc->tfm) > out_size)
	{
		printk(KERN_ERR "FIPS(%s): Not enough space for digest", __FUNCTION__);		
		return ret;
	}

	ret = crypto_hash_final (desc, out);

	if (ret)
	{
		printk(KERN_ERR "FIPS(%s): crypto_hash_final failed", __FUNCTION__);		
		return -1;
	}

	return 0;
}
开发者ID:1paul1，项目名称:dynamite，代码行数:27，代码来源:fips_integrity.c


示例2: crypto_alloc_hash

static struct crypto_hash *pohmelfs_init_hash(struct pohmelfs_sb *psb)
{
	int err;
	struct crypto_hash *hash;

	hash = crypto_alloc_hash(psb->hash_string, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(hash)) {
		err = PTR_ERR(hash);
		dprintk("%s: idx: %u: failed to allocate hash '%s', err: %d.\n",
				__func__, psb->idx, psb->hash_string, err);
		goto err_out_exit;
	}

	psb->crypto_attached_size = crypto_hash_digestsize(hash);

	if (!psb->hash_keysize)
		return hash;

	err = crypto_hash_setkey(hash, psb->hash_key, psb->hash_keysize);
	if (err) {
		dprintk("%s: idx: %u: failed to set key for hash '%s', err: %d.\n",
				__func__, psb->idx, psb->hash_string, err);
		goto err_out_free;
	}

	return hash;

err_out_free:
	crypto_free_hash(hash);
err_out_exit:
	return ERR_PTR(err);
}
开发者ID:119-org，项目名称:hi3518-osdrv，代码行数:32，代码来源:crypto.c


示例3: crypt_iv_essiv_init

/* Initialise ESSIV - compute salt but no local memory allocations */
static int crypt_iv_essiv_init(struct crypt_config *cc)
{
    struct iv_essiv_private *essiv = &cc->iv_gen_private.essiv;
    struct hash_desc desc;
    struct scatterlist sg;
    struct crypto_cipher *essiv_tfm;
    int err;

    sg_init_one(&sg, cc->key, cc->key_size);
    desc.tfm = essiv->hash_tfm;
    desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;

    err = crypto_hash_digest(&desc, &sg, cc->key_size, essiv->salt);
    if (err)
        return err;

    essiv_tfm = cc->iv_private;

    err = crypto_cipher_setkey(essiv_tfm, essiv->salt,
                               crypto_hash_digestsize(essiv->hash_tfm));
    if (err)
        return err;

    return 0;
}
开发者ID:bju2000，项目名称:mediatek，代码行数:26，代码来源:dm-crypt.c


示例4: crypto_alloc_hash

/*
 * Crypto machinery: hash/cipher support for the given crypto controls.
 */
static struct crypto_hash *dst_init_hash(struct dst_crypto_ctl *ctl, u8 *key)
{
	int err;
	struct crypto_hash *hash;

	hash = crypto_alloc_hash(ctl->hash_algo, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(hash)) {
		err = PTR_ERR(hash);
		dprintk("%s: failed to allocate hash '%s', err: %d.\n",
				__func__, ctl->hash_algo, err);
		goto err_out_exit;
	}

	ctl->crypto_attached_size = crypto_hash_digestsize(hash);

	if (!ctl->hash_keysize)
		return hash;

	err = crypto_hash_setkey(hash, key, ctl->hash_keysize);
	if (err) {
		dprintk("%s: failed to set key for hash '%s', err: %d.\n",
				__func__, ctl->hash_algo, err);
		goto err_out_free;
	}

	return hash;

err_out_free:
	crypto_free_hash(hash);
err_out_exit:
	return ERR_PTR(err);
}
开发者ID:Aircell，项目名称:asp-kernel，代码行数:35，代码来源:crypto.c


示例5: nfs4_make_rec_clidname

__be32
nfs4_make_rec_clidname(char *dname, struct xdr_netobj *clname)
{
	struct xdr_netobj cksum;
	struct hash_desc desc;
	struct scatterlist sg;
	__be32 status = nfserr_resource;

	dprintk("NFSD: nfs4_make_rec_clidname for %.*s\n",
			clname->len, clname->data);
	desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
	desc.tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(desc.tfm))
		goto out_no_tfm;
	cksum.len = crypto_hash_digestsize(desc.tfm);
	cksum.data = kmalloc(cksum.len, GFP_KERNEL);
	if (cksum.data == NULL)
 		goto out;

	sg_init_one(&sg, clname->data, clname->len);

	if (crypto_hash_digest(&desc, &sg, sg.length, cksum.data))
		goto out;

	md5_to_hex(dname, cksum.data);

	kfree(cksum.data);
	status = nfs_ok;
out:
	crypto_free_hash(desc.tfm);
out_no_tfm:
	return status;
}
开发者ID:PennPanda，项目名称:linux-repo，代码行数:33，代码来源:nfs4recover.c


示例6: make_checksum

/* checksum the plaintext data and hdrlen bytes of the token header */
s32
make_checksum(char *cksumname, char *header, int hdrlen, struct xdr_buf *body,
		   int body_offset, struct xdr_netobj *cksum)
{
	struct hash_desc                desc; /* XXX add to ctx? */
	struct scatterlist              sg[1];
	int err;

	desc.tfm = crypto_alloc_hash(cksumname, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(desc.tfm))
		return GSS_S_FAILURE;
	cksum->len = crypto_hash_digestsize(desc.tfm);
	desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;

	err = crypto_hash_init(&desc);
	if (err)
		goto out;
	sg_set_buf(sg, header, hdrlen);
	err = crypto_hash_update(&desc, sg, hdrlen);
	if (err)
		goto out;
	err = xdr_process_buf(body, body_offset, body->len - body_offset,
			      checksummer, &desc);
	if (err)
		goto out;
	err = crypto_hash_final(&desc, cksum->data);

out:
	crypto_free_hash(desc.tfm);
	return err ? GSS_S_FAILURE : 0;
}
开发者ID:3sOx，项目名称:asuswrt-merlin，代码行数:32，代码来源:gss_krb5_crypto.c


示例7: cfs_crypto_hash_final

/*      If hash_len pointer is NULL - destroy descriptor. */
int cfs_crypto_hash_final(struct cfs_crypto_hash_desc *hdesc,
			  unsigned char *hash, unsigned int *hash_len)
{
	int     err;
	int     size = crypto_hash_digestsize(((struct hash_desc *)hdesc)->tfm);

	if (hash_len == NULL) {
		crypto_free_hash(((struct hash_desc *)hdesc)->tfm);
		kfree(hdesc);
		return 0;
	}
	if (hash == NULL || *hash_len < size) {
		*hash_len = size;
		return -ENOSPC;
	}
	err = crypto_hash_final((struct hash_desc *) hdesc, hash);

	if (err < 0) {
		/* May be caller can fix error */
		return err;
	}
	crypto_free_hash(((struct hash_desc *)hdesc)->tfm);
	kfree(hdesc);
	return err;
}
开发者ID:Cool-Joe，项目名称:imx23-audio，代码行数:26，代码来源:linux-crypto.c


示例8: crypt_iv_essiv_ctr

static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti,
                              const char *opts)
{
    struct crypto_cipher *essiv_tfm = NULL;
    struct crypto_hash *hash_tfm = NULL;
    u8 *salt = NULL;
    int err;

    if (!opts) {
        ti->error = "Digest algorithm missing for ESSIV mode";
        return -EINVAL;
    }

    /* Allocate hash algorithm */
    hash_tfm = crypto_alloc_hash(opts, 0, CRYPTO_ALG_ASYNC);
    if (IS_ERR(hash_tfm)) {
        ti->error = "Error initializing ESSIV hash";
        err = PTR_ERR(hash_tfm);
        goto bad;
    }

    salt = kzalloc(crypto_hash_digestsize(hash_tfm), GFP_KERNEL);
    if (!salt) {
        ti->error = "Error kmallocing salt storage in ESSIV";
        err = -ENOMEM;
        goto bad;
    }

    cc->iv_gen_private.essiv.salt = salt;
    cc->iv_gen_private.essiv.hash_tfm = hash_tfm;

    essiv_tfm = setup_essiv_cpu(cc, ti, salt,
                                crypto_hash_digestsize(hash_tfm));
    if (IS_ERR(essiv_tfm)) {
        crypt_iv_essiv_dtr(cc);
        return PTR_ERR(essiv_tfm);
    }
    cc->iv_private = essiv_tfm;

    return 0;

bad:
    if (hash_tfm && !IS_ERR(hash_tfm))
        crypto_free_hash(hash_tfm);
    kfree(salt);
    return err;
}
开发者ID:bju2000，项目名称:mediatek，代码行数:47，代码来源:dm-crypt.c


示例9: crypt_iv_essiv_ctr

static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti,
			      const char *opts)
{
	struct crypto_cipher *essiv_tfm = NULL;
	struct crypto_hash *hash_tfm = NULL;
	u8 *salt = NULL;
	int err;

	if (!opts) {
		ti->error = "Digest algorithm missing for ESSIV mode";
		return -EINVAL;
	}

	/* Allocate hash algorithm */
	hash_tfm = crypto_alloc_hash(opts, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(hash_tfm)) {
		ti->error = "Error initializing ESSIV hash";
		err = PTR_ERR(hash_tfm);
		goto bad;
	}

	salt = kzalloc(crypto_hash_digestsize(hash_tfm), GFP_KERNEL);
	if (!salt) {
		ti->error = "Error kmallocing salt storage in ESSIV";
		err = -ENOMEM;
		goto bad;
	}

	/* Allocate essiv_tfm */
	essiv_tfm = crypto_alloc_cipher(cc->cipher, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(essiv_tfm)) {
		ti->error = "Error allocating crypto tfm for ESSIV";
		err = PTR_ERR(essiv_tfm);
		goto bad;
	}
	if (crypto_cipher_blocksize(essiv_tfm) !=
	    crypto_ablkcipher_ivsize(cc->tfm)) {
		ti->error = "Block size of ESSIV cipher does "
			    "not match IV size of block cipher";
		err = -EINVAL;
		goto bad;
	}

	cc->iv_gen_private.essiv.salt = salt;
	cc->iv_gen_private.essiv.tfm = essiv_tfm;
	cc->iv_gen_private.essiv.hash_tfm = hash_tfm;

	return 0;

bad:
	if (essiv_tfm && !IS_ERR(essiv_tfm))
		crypto_free_cipher(essiv_tfm);
	if (hash_tfm && !IS_ERR(hash_tfm))
		crypto_free_hash(hash_tfm);
	kfree(salt);
	return err;
}
开发者ID:FrozenCow，项目名称:FIRE-ICE，代码行数:57，代码来源:dm-crypt.c


示例10: crypt_iv_essiv_wipe

/* Wipe salt and reset key derived from volume key */
static int crypt_iv_essiv_wipe(struct crypt_config *cc)
{
	struct iv_essiv_private *essiv = &cc->iv_gen_private.essiv;
	unsigned salt_size = crypto_hash_digestsize(essiv->hash_tfm);

	memset(essiv->salt, 0, salt_size);

	return crypto_cipher_setkey(essiv->tfm, essiv->salt, salt_size);
}
开发者ID:FrozenCow，项目名称:FIRE-ICE，代码行数:10，代码来源:dm-crypt.c


示例11: DriverEnvironment_HMAC

static int
DriverEnvironment_HMAC(const char *algo, 
                       const void *key,
                       size_t key_len,
                       const void *data,
                       size_t data_len,
                       void *result,
                       size_t result_len)
{
   struct crypto_hash *tfm;
   struct scatterlist sg[1];
   struct hash_desc desc;
   int ret;

   tfm = crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC);
   if(IS_ERR(tfm)) {
      DE_TRACE_INT(TR_CRYPTO, "failed to allocate hash (%ld)\n", PTR_ERR(tfm));
      return WIFI_ENGINE_FAILURE;
   }

   if(crypto_hash_digestsize(tfm) > result_len) {
      crypto_free_hash(tfm);
      return WIFI_ENGINE_FAILURE_INVALID_LENGTH;
   }

   sg_init_one(&sg[0], data, data_len);

   crypto_hash_clear_flags(tfm, ~0);

   ret = crypto_hash_setkey(tfm, key, key_len);
   if(ret != 0) {
      DE_TRACE_INT(TR_CRYPTO, "failed to set key (%d)\n", ret);
      crypto_free_hash(tfm);
      return WIFI_ENGINE_FAILURE;
   }

   desc.tfm = tfm;
   desc.flags = 0;

   ret = crypto_hash_digest(&desc, sg, data_len, result);
   if(ret != 0) {
      DE_TRACE_INT(TR_CRYPTO, "faild to digest (%d)\n", ret);
      crypto_free_hash(tfm);
      return WIFI_ENGINE_FAILURE;
   }

   crypto_free_hash(tfm);

   return WIFI_ENGINE_SUCCESS;
}
开发者ID:CoreTech-Development，项目名称:buildroot-linux-kernel-m3，代码行数:50，代码来源:de_crypto.c


示例12: crypt_iv_essiv_wipe

/* Wipe salt and reset key derived from volume key */
static int crypt_iv_essiv_wipe(struct crypt_config *cc)
{
    struct iv_essiv_private *essiv = &cc->iv_gen_private.essiv;
    unsigned salt_size = crypto_hash_digestsize(essiv->hash_tfm);
    struct crypto_cipher *essiv_tfm;
    int r, err = 0;

    memset(essiv->salt, 0, salt_size);

    essiv_tfm = cc->iv_private;
    r = crypto_cipher_setkey(essiv_tfm, essiv->salt, salt_size);
    if (r)
        err = r;

    return err;
}
开发者ID:bju2000，项目名称:mediatek，代码行数:17，代码来源:dm-crypt.c


示例13: init_mars

int __init init_mars(void)
{
	MARS_INF("init_mars()\n");

	set_fake();

#ifdef MARS_TRACING
	{
		int flags = O_CREAT | O_TRUNC | O_RDWR | O_LARGEFILE;
		int prot = 0600;
		mm_segment_t oldfs;
		oldfs = get_fs();
		set_fs(get_ds());
		mars_log_file = filp_open("/mars/trace.csv", flags, prot);
		set_fs(oldfs);
		if (IS_ERR(mars_log_file)) {
			MARS_ERR("cannot create trace logfile, status = %ld\n", PTR_ERR(mars_log_file));
			mars_log_file = NULL;
		}
	}
#endif

	mars_tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
	if (!mars_tfm) {
		MARS_ERR("cannot alloc crypto hash\n");
		return -ENOMEM;
	}
	if (IS_ERR(mars_tfm)) {
		MARS_ERR("alloc crypto hash failed, status = %d\n", (int)PTR_ERR(mars_tfm));
		return PTR_ERR(mars_tfm);
	}
#if 0
	if (crypto_tfm_alg_type(crypto_hash_tfm(mars_tfm)) != CRYPTO_ALG_TYPE_DIGEST) {
		MARS_ERR("bad crypto hash type\n");
		return -EINVAL;
	}
#endif
	mars_digest_size = crypto_hash_digestsize(mars_tfm);
	MARS_INF("digest_size = %d\n", mars_digest_size);

	return 0;
}
开发者ID:grpomega，项目名称:mars，代码行数:42，代码来源:mars_generic.c


示例14: s390_sha_final

void s390_sha_final(struct crypto_tfm *tfm, u8 *out)
{
	struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
	unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
	u64 bits;
	unsigned int index, end, plen;
	int ret;

	/* SHA-512 uses 128 bit padding length */
	plen = (bsize > SHA256_BLOCK_SIZE) ? 16 : 8;

	/* must perform manual padding */
	index = ctx->count & (bsize - 1);
	end = (index < bsize - plen) ? bsize : (2 * bsize);

	/* start pad with 1 */
	ctx->buf[index] = 0x80;
	index++;

	/* pad with zeros */
	memset(ctx->buf + index, 0x00, end - index - 8);

	/*
	 * Append message length. Well, SHA-512 wants a 128 bit lenght value,
	 * nevertheless we use u64, should be enough for now...
	 */
	bits = ctx->count * 8;
	memcpy(ctx->buf + end - 8, &bits, sizeof(bits));

	ret = crypt_s390_kimd(ctx->func, ctx->state, ctx->buf, end);
	BUG_ON(ret != end);

	/* copy digest to out */
	memcpy(out, ctx->state, crypto_hash_digestsize(crypto_hash_cast(tfm)));
	/* wipe context */
	memset(ctx, 0, sizeof *ctx);
}
开发者ID:jakev，项目名称:CobraDroidBeta，代码行数:37，代码来源:sha_common.c


示例15: cfs_crypto_hash_final

/**
 * Finish hash calculation, copy hash digest to buffer, clean up hash descriptor
 *
 * \param[in]	hdesc		hash descriptor
 * \param[out]	hash		pointer to hash buffer to store hash digest
 * \param[in,out] hash_len	pointer to hash buffer size, if \a hash == NULL
 *				or hash_len == NULL only free \a hdesc instead
 *				of computing the hash
 *
 * \retval		0 for success
 * \retval		-EOVERFLOW if hash_len is too small for the hash digest
 * \retval		negative errno for other errors from lower layers
 */
int cfs_crypto_hash_final(struct cfs_crypto_hash_desc *hdesc,
			  unsigned char *hash, unsigned int *hash_len)
{
	int     size = crypto_hash_digestsize(((struct hash_desc *)hdesc)->tfm);
	int     err;

	if (hash == NULL || hash_len == NULL) {
		err = 0;
		goto free;
	}
	if (*hash_len < size) {
		err = -EOVERFLOW;
		goto free;
	}

	err = crypto_hash_final((struct hash_desc *)hdesc, hash);
	if (err == 0)
		*hash_len = size;
free:
	crypto_free_hash(((struct hash_desc *)hdesc)->tfm);
	kfree(hdesc);

	return err;
}
开发者ID:Zealsathish，项目名称:lustre，代码行数:37，代码来源:linux-crypto.c


示例16: mppe_rekey

/*
 * Perform the MPPE rekey algorithm, from RFC 3078, sec. 7.3.
 * Well, not what's written there, but rather what they meant.
 */
static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
{
	struct scatterlist sg_in[1], sg_out[1];
	struct blkcipher_desc desc = { .tfm = state->arc4 };

	get_new_key_from_sha(state);
	if (!initial_key) {
		crypto_blkcipher_setkey(state->arc4, state->sha1_digest,
					state->keylen);
		sg_init_table(sg_in, 1);
		sg_init_table(sg_out, 1);
		setup_sg(sg_in, state->sha1_digest, state->keylen);
		setup_sg(sg_out, state->session_key, state->keylen);
		if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in,
					     state->keylen) != 0) {
    		    printk(KERN_WARNING "mppe_rekey: cipher_encrypt failed\n");
		}
	} else {
		memcpy(state->session_key, state->sha1_digest, state->keylen);
	}
	if (state->keylen == 8) {
		/* See RFC 3078 */
		state->session_key[0] = 0xd1;
		state->session_key[1] = 0x26;
		state->session_key[2] = 0x9e;
	}
	crypto_blkcipher_setkey(state->arc4, state->session_key, state->keylen);
}

/*
 * Allocate space for a (de)compressor.
 */
static void *mppe_alloc(unsigned char *options, int optlen)
{
	struct ppp_mppe_state *state;
	unsigned int digestsize;

	if (optlen != CILEN_MPPE + sizeof(state->master_key)
	    || options[0] != CI_MPPE || options[1] != CILEN_MPPE)
		goto out;

	state = kzalloc(sizeof(*state), GFP_KERNEL);
	if (state == NULL)
		goto out;


	state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(state->arc4)) {
		state->arc4 = NULL;
		goto out_free;
	}

	state->sha1 = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(state->sha1)) {
		state->sha1 = NULL;
		goto out_free;
	}

	digestsize = crypto_hash_digestsize(state->sha1);
	if (digestsize < MPPE_MAX_KEY_LEN)
		goto out_free;

	state->sha1_digest = kmalloc(digestsize, GFP_KERNEL);
	if (!state->sha1_digest)
		goto out_free;

	/* Save keys. */
	memcpy(state->master_key, &options[CILEN_MPPE],
	       sizeof(state->master_key));
	memcpy(state->session_key, state->master_key,
	       sizeof(state->master_key));

	/*
	 * We defer initial key generation until mppe_init(), as mppe_alloc()
	 * is called frequently during negotiation.
	 */

	return (void *)state;

	out_free:
	    if (state->sha1_digest)
		kfree(state->sha1_digest);
	    if (state->sha1)
		crypto_free_hash(state->sha1);
	    if (state->arc4)
		crypto_free_blkcipher(state->arc4);
	    kfree(state);
	out:
	return NULL;
}

/*
 * Deallocate space for a (de)compressor.
 */
static void mppe_free(void *arg)
{
//.........这里部分代码省略.........
开发者ID:325116067，项目名称:semc-qsd8x50，代码行数:101，代码来源:ppp_mppe.c


示例17: esp_init_state

static int esp_init_state(struct xfrm_state *x)
{
	struct esp_data *esp = NULL;
	struct crypto_blkcipher *tfm;
	u32 align;

	/* null auth and encryption can have zero length keys */
	if (x->aalg) {
		if (x->aalg->alg_key_len > 512)
			goto error;
	}
	if (x->ealg == NULL)
		goto error;

	esp = kzalloc(sizeof(*esp), GFP_KERNEL);
	if (esp == NULL)
		return -ENOMEM;

	if (x->aalg) {
		struct xfrm_algo_desc *aalg_desc;
		struct crypto_hash *hash;

		esp->auth.key = x->aalg->alg_key;
		esp->auth.key_len = (x->aalg->alg_key_len+7)/8;
		hash = crypto_alloc_hash(x->aalg->alg_name, 0,
					 CRYPTO_ALG_ASYNC);
		if (IS_ERR(hash))
			goto error;

		esp->auth.tfm = hash;
		if (crypto_hash_setkey(hash, esp->auth.key, esp->auth.key_len))
			goto error;

		aalg_desc = xfrm_aalg_get_byname(x->aalg->alg_name, 0);
		BUG_ON(!aalg_desc);

		if (aalg_desc->uinfo.auth.icv_fullbits/8 !=
		    crypto_hash_digestsize(hash)) {
			NETDEBUG(KERN_INFO "ESP: %s digestsize %u != %hu\n",
				 x->aalg->alg_name,
				 crypto_hash_digestsize(hash),
				 aalg_desc->uinfo.auth.icv_fullbits/8);
			goto error;
		}

		esp->auth.icv_full_len = aalg_desc->uinfo.auth.icv_fullbits/8;
		esp->auth.icv_trunc_len = aalg_desc->uinfo.auth.icv_truncbits/8;

		esp->auth.work_icv = kmalloc(esp->auth.icv_full_len, GFP_KERNEL);
		if (!esp->auth.work_icv)
			goto error;
	}
	esp->conf.key = x->ealg->alg_key;
	esp->conf.key_len = (x->ealg->alg_key_len+7)/8;
	tfm = crypto_alloc_blkcipher(x->ealg->alg_name, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(tfm))
		goto error;
	esp->conf.tfm = tfm;
	esp->conf.ivlen = crypto_blkcipher_ivsize(tfm);
	esp->conf.padlen = 0;
	if (esp->conf.ivlen) {
		esp->conf.ivec = kmalloc(esp->conf.ivlen, GFP_KERNEL);
		if (unlikely(esp->conf.ivec == NULL))
			goto error;
		esp->conf.ivinitted = 0;
	}
	if (crypto_blkcipher_setkey(tfm, esp->conf.key, esp->conf.key_len))
		goto error;
	x->props.header_len = sizeof(struct ip_esp_hdr) + esp->conf.ivlen;
	if (x->props.mode == XFRM_MODE_TUNNEL)
		x->props.header_len += sizeof(struct iphdr);
	else if (x->props.mode == XFRM_MODE_BEET)
		x->props.header_len += IPV4_BEET_PHMAXLEN;
	if (x->encap) {
		struct xfrm_encap_tmpl *encap = x->encap;

		switch (encap->encap_type) {
		default:
			goto error;
		case UDP_ENCAP_ESPINUDP:
			x->props.header_len += sizeof(struct udphdr);
			break;
		case UDP_ENCAP_ESPINUDP_NON_IKE:
			x->props.header_len += sizeof(struct udphdr) + 2 * sizeof(u32);
			break;
		}
	}
	x->data = esp;
	align = ALIGN(crypto_blkcipher_blocksize(esp->conf.tfm), 4);
	if (esp->conf.padlen)
		align = max_t(u32, align, esp->conf.padlen);
	x->props.trailer_len = align + 1 + esp->auth.icv_trunc_len;
	return 0;

error:
	x->data = esp;
	esp_destroy(x);
	x->data = NULL;
	return -EINVAL;
}
开发者ID:ruigulala，项目名称:helgrind_uml，代码行数:100，代码来源:esp4.c


示例18: pohmelfs_crypto_process_input_data

int pohmelfs_crypto_process_input_data(struct pohmelfs_crypto_engine *e, u64 cmd_iv,
		void *data, struct page *page, unsigned int size)
{
	int err;
	struct scatterlist sg;

	if (!e->cipher && !e->hash)
		return 0;

	dprintk("%s: eng: %p, iv: %llx, data: %p, page: %p/%lu, size: %u.\n",
		__func__, e, cmd_iv, data, page, (page) ? page->index : 0, size);

	if (data) {
		sg_init_one(&sg, data, size);
	} else {
		sg_init_table(&sg, 1);
		sg_set_page(&sg, page, size, 0);
	}

	if (e->cipher) {
		struct ablkcipher_request *req = e->data + crypto_hash_digestsize(e->hash);
		u8 iv[32];

		memset(iv, 0, sizeof(iv));
		memcpy(iv, &cmd_iv, sizeof(cmd_iv));

		ablkcipher_request_set_tfm(req, e->cipher);

		err = pohmelfs_crypto_process(req, &sg, &sg, iv, 0, e->timeout);
		if (err)
			goto err_out_exit;
	}

	if (e->hash) {
		struct hash_desc desc;
		void *dst = e->data + e->size/2;

		desc.tfm = e->hash;
		desc.flags = 0;

		err = crypto_hash_init(&desc);
		if (err)
			goto err_out_exit;

		err = crypto_hash_update(&desc, &sg, size);
		if (err)
			goto err_out_exit;

		err = crypto_hash_final(&desc, dst);
		if (err)
			goto err_out_exit;

		err = !!memcmp(dst, e->data, crypto_hash_digestsize(e->hash));

		if (err) {
#ifdef CONFIG_POHMELFS_DEBUG
			unsigned int i;
			unsigned char *recv = e->data, *calc = dst;

			dprintk("%s: eng: %p, hash: %p, cipher: %p: iv : %llx, hash mismatch (recv/calc): ",
					__func__, e, e->hash, e->cipher, cmd_iv);
			for (i = 0; i < crypto_hash_digestsize(e->hash); ++i) {
#if 0
				dprintka("%02x ", recv[i]);
				if (recv[i] != calc[i]) {
					dprintka("| calc byte: %02x.\n", calc[i]);
					break;
				}
#else
				dprintka("%02x/%02x ", recv[i], calc[i]);
#endif
			}
			dprintk("\n");
#endif
			goto err_out_exit;
		} else {
			dprintk("%s: eng: %p, hash: %p, cipher: %p: hashes matched.\n",
					__func__, e, e->hash, e->cipher);
		}
	}

	dprintk("%s: eng: %p, size: %u, hash: %p, cipher: %p: completed.\n",
			__func__, e, e->size, e->hash, e->cipher);

	return 0;

err_out_exit:
	dprintk("%s: eng: %p, hash: %p, cipher: %p: err: %d.\n",
			__func__, e, e->hash, e->cipher, err);
	return err;
}
开发者ID:119-org，项目名称:hi3518-osdrv，代码行数:91，代码来源:crypto.c


示例19: esp6_init_state

static int esp6_init_state(struct xfrm_state *x)
{
	struct esp_data *esp = NULL;
	struct crypto_blkcipher *tfm;

	/* null auth and encryption can have zero length keys */
	if (x->aalg) {
		if (x->aalg->alg_key_len > 512)
			goto error;
	}
	if (x->ealg == NULL)
		goto error;

	if (x->encap)
		goto error;

	esp = kzalloc(sizeof(*esp), GFP_KERNEL);
	if (esp == NULL)
		return -ENOMEM;

	if (x->aalg) {
		struct xfrm_algo_desc *aalg_desc;
		struct crypto_hash *hash;

		esp->auth.key = x->aalg->alg_key;
		esp->auth.key_len = (x->aalg->alg_key_len+7)/8;
		hash = crypto_alloc_hash(x->aalg->alg_name, 0,
					 CRYPTO_ALG_ASYNC);
		if (IS_ERR(hash))
			goto error;

		esp->auth.tfm = hash;
		if (crypto_hash_setkey(hash, esp->auth.key, esp->auth.key_len))
			goto error;
 
		aalg_desc = xfrm_aalg_get_byname(x->aalg->alg_name, 0);
		BUG_ON(!aalg_desc);
 
		if (aalg_desc->uinfo.auth.icv_fullbits/8 !=
		    crypto_hash_digestsize(hash)) {
			NETDEBUG(KERN_INFO "ESP: %s digestsize %u != %hu\n",
				 x->aalg->alg_name,
				 crypto_hash_digestsize(hash),
				 aalg_desc->uinfo.auth.icv_fullbits/8);
			goto error;
		}
 
		esp->auth.icv_full_len = aalg_desc->uinfo.auth.icv_fullbits/8;
		esp->auth.icv_trunc_len = aalg_desc->uinfo.auth.icv_truncbits/8;
 
		esp->auth.work_icv = kmalloc(esp->auth.icv_full_len, GFP_KERNEL);
		if (!esp->auth.work_icv)
			goto error;
	}
	esp->conf.key = x->ealg->alg_key;
	esp->conf.key_len = (x->ealg->alg_key_len+7)/8;
	tfm = crypto_alloc_blkcipher(x->ealg->alg_name, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(tfm))
		goto error;
	esp->conf.tfm = tfm;
	esp->conf.ivlen = crypto_blkcipher_ivsize(tfm);
	esp->conf.padlen = 0;
	if (esp->conf.ivlen) {
		esp->conf.ivec = kmalloc(esp->conf.ivlen, GFP_KERNEL);
		if (unlikely(esp->conf.ivec == NULL))
			goto error;
		esp->conf.ivinitted = 0;
	}
	if (crypto_blkcipher_setkey(tfm, esp->conf.key, esp->conf.key_len))
		goto error;
	x->props.header_len = sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen;
	if (x->props.mode == XFRM_MODE_TUNNEL)
		x->props.header_len += sizeof(struct ipv6hdr);
	x->data = esp;
	return 0;

error:
	x->data = esp;
	esp6_destroy(x);
	x->data = NULL;
	return -EINVAL;
}
开发者ID:xiandaicxsj，项目名称:copyKvm，代码行数:82，代码来源:esp6.c


示例20: ah_init_state

static int ah_init_state(struct xfrm_state *x)
{
	struct ah_data *ahp = NULL;
	struct xfrm_algo_desc *aalg_desc;
	struct crypto_hash *tfm;

	if (!x->aalg)
		goto error;

	if (x->encap)
		goto error;

	ahp = kzalloc(sizeof(*ahp), GFP_KERNEL);
	if (ahp == NULL)
		return -ENOMEM;

	tfm = crypto_alloc_hash(x->aalg->alg_name, 0, CRYPTO_ALG_ASYNC);
	if (IS_ERR(tfm))
		goto error;

	ahp->tfm = tfm;
	if (crypto_hash_setkey(tfm, x->aalg->alg_key,
			       (x->aalg->alg_key_len + 7) / 8))
		goto error;

	/*
	 * Lookup the algorithm description maintained by xfrm_algo,
	 * verify crypto transform properties, and store information
	 * we need for AH processing.  This lookup cannot fail here
	 * after a successful crypto_alloc_hash().
	 */
	aalg_desc = xfrm_aalg_get_byname(x->aalg->alg_name, 0);
	BUG_ON(!aalg_desc);

	if (aalg_desc->uinfo.auth.icv_fullbits/8 !=
	    crypto_hash_digestsize(tfm)) {
		printk(KERN_INFO "AH: %s digestsize %u != %hu\n",
		       x->aalg->alg_name, crypto_hash_digestsize(tfm),
		       aalg_desc->uinfo.auth.icv_fullbits/8);
		goto error;
	}

	ahp->icv_full_len = aalg_desc->uinfo.auth.icv_fullbits/8;
	ahp->icv_trunc_len = aalg_desc->uinfo.auth.icv_truncbits/8;

	BUG_ON(ahp->icv_trunc_len > MAX_AH_AUTH_LEN);

	ahp->work_icv = kmalloc(ahp->icv_full_len, GFP_KERNEL);
	if (!ahp->work_icv)
		goto error;

	x->props.header_len = XFRM_ALIGN8(sizeof(struct ip_auth_hdr) +
					  ahp->icv_trunc_len);
	if (x->props.mode == XFRM_MODE_TUNNEL)
		x->props.header_len += sizeof(struct iphdr);
	x->data = ahp;

	return 0;

error:
	if (ahp) {
		kfree(ahp->work_icv);
		crypto_free_hash(ahp->tfm);
		kfree(ahp);
	}
	return -EINVAL;
}
开发者ID:DeltaResero，项目名称:GC-Wii-Linux-Kernel-2.6.32.y，代码行数:67，代码来源:ah4.c



注：本文中的crypto_hash_digestsize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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