示例#1
0
int crypto4xx_setkey_aes_ccm(struct crypto_aead *cipher, const u8 *key,
			     unsigned int keylen)
{
	struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
	struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
	struct dynamic_sa_ctl *sa;
	int rc = 0;

	rc = crypto4xx_setup_fallback(ctx, cipher, key, keylen);
	if (rc)
		return rc;

	if (ctx->sa_in || ctx->sa_out)
		crypto4xx_free_sa(ctx);

	rc = crypto4xx_alloc_sa(ctx, SA_AES128_CCM_LEN + (keylen - 16) / 4);
	if (rc)
		return rc;

	/* Setup SA */
	sa = (struct dynamic_sa_ctl *) ctx->sa_in;
	sa->sa_contents.w = SA_AES_CCM_CONTENTS | (keylen << 2);

	set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
				 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
				 SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
				 SA_CIPHER_ALG_AES,
				 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
				 SA_OPCODE_HASH_DECRYPT, DIR_INBOUND);

	set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
				 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
				 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
				 SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
				 SA_NOT_COPY_HDR);

	sa->sa_command_1.bf.key_len = keylen >> 3;

	crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa), key, keylen);

	memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
	sa = (struct dynamic_sa_ctl *) ctx->sa_out;

	set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
				 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
				 SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
				 SA_CIPHER_ALG_AES,
				 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
				 SA_OPCODE_ENCRYPT_HASH, DIR_OUTBOUND);

	set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
				 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
				 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
				 SA_COPY_PAD, SA_COPY_PAYLOAD,
				 SA_NOT_COPY_HDR);

	sa->sa_command_1.bf.key_len = keylen >> 3;
	return 0;
}
示例#2
0
/**
 * HASH SHA1 Functions
 */
static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm,
				   unsigned int sa_len,
				   unsigned char ha,
				   unsigned char hm)
{
	struct crypto_alg *alg = tfm->__crt_alg;
	struct crypto4xx_alg *my_alg = crypto_alg_to_crypto4xx_alg(alg);
	struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
	struct dynamic_sa_ctl *sa;
	struct dynamic_sa_hash160 *sa_in;
	int rc;

	ctx->dev   = my_alg->dev;
	ctx->is_hash = 1;
	ctx->hash_final = 0;

	/* Create SA */
	if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr)
		crypto4xx_free_sa(ctx);

	rc = crypto4xx_alloc_sa(ctx, sa_len);
	if (rc)
		return rc;

	if (ctx->state_record_dma_addr == 0) {
		crypto4xx_alloc_state_record(ctx);
		if (!ctx->state_record_dma_addr) {
			crypto4xx_free_sa(ctx);
			return -ENOMEM;
		}
	}

	crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
				 sizeof(struct crypto4xx_ctx));
	sa = (struct dynamic_sa_ctl *) ctx->sa_in;
	set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
				 SA_NOT_LOAD_HASH, SA_LOAD_IV_FROM_SA,
				 SA_NO_HEADER_PROC, ha, SA_CIPHER_ALG_NULL,
				 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
				 SA_OPCODE_HASH, DIR_INBOUND);
	set_dynamic_sa_command_1(sa, 0, SA_HASH_MODE_HASH,
				 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
				 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
				 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
				 SA_NOT_COPY_HDR);
	ctx->direction = DIR_INBOUND;
	sa->sa_contents = SA_HASH160_CONTENTS;
	sa_in = (struct dynamic_sa_hash160 *) ctx->sa_in;
	/* Need to zero hash digest in SA */
	memset(sa_in->inner_digest, 0, sizeof(sa_in->inner_digest));
	memset(sa_in->outer_digest, 0, sizeof(sa_in->outer_digest));
	sa_in->state_ptr = ctx->state_record_dma_addr;
	ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(ctx);

	return 0;
}
示例#3
0
/**
 * AES Functions
 */
static int crypto4xx_setkey_aes(struct crypto_ablkcipher *cipher,
				const u8 *key,
				unsigned int keylen,
				unsigned char cm,
				u8 fb)
{
	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
	struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
	struct dynamic_sa_ctl *sa;
	int    rc;

	if (keylen != AES_KEYSIZE_256 &&
		keylen != AES_KEYSIZE_192 && keylen != AES_KEYSIZE_128) {
		crypto_ablkcipher_set_flags(cipher,
				CRYPTO_TFM_RES_BAD_KEY_LEN);
		return -EINVAL;
	}

	/* Create SA */
	if (ctx->sa_in || ctx->sa_out)
		crypto4xx_free_sa(ctx);

	rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4);
	if (rc)
		return rc;

	/* Setup SA */
	sa = ctx->sa_in;

	set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, SA_NOT_SAVE_IV,
				 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
				 SA_NO_HEADER_PROC, SA_HASH_ALG_NULL,
				 SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
				 SA_OP_GROUP_BASIC, SA_OPCODE_DECRYPT,
				 DIR_INBOUND);

	set_dynamic_sa_command_1(sa, cm, SA_HASH_MODE_HASH,
				 fb, SA_EXTENDED_SN_OFF,
				 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
				 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
				 SA_NOT_COPY_HDR);
	crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
				 key, keylen);
	sa->sa_contents.w = SA_AES_CONTENTS | (keylen << 2);
	sa->sa_command_1.bf.key_len = keylen >> 3;

	memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
	sa = ctx->sa_out;
	sa->sa_command_0.bf.dir = DIR_OUTBOUND;

	return 0;
}
示例#4
0
/**
 * HASH SHA1 Functions
 */
static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm,
				   unsigned int sa_len,
				   unsigned char ha,
				   unsigned char hm)
{
	struct crypto_alg *alg = tfm->__crt_alg;
	struct crypto4xx_alg *my_alg;
	struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
	struct dynamic_sa_hash160 *sa;
	int rc;

	my_alg = container_of(__crypto_ahash_alg(alg), struct crypto4xx_alg,
			      alg.u.hash);
	ctx->dev   = my_alg->dev;

	/* Create SA */
	if (ctx->sa_in || ctx->sa_out)
		crypto4xx_free_sa(ctx);

	rc = crypto4xx_alloc_sa(ctx, sa_len);
	if (rc)
		return rc;

	crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
				 sizeof(struct crypto4xx_ctx));
	sa = (struct dynamic_sa_hash160 *)ctx->sa_in;
	set_dynamic_sa_command_0(&sa->ctrl, SA_SAVE_HASH, SA_NOT_SAVE_IV,
				 SA_NOT_LOAD_HASH, SA_LOAD_IV_FROM_SA,
				 SA_NO_HEADER_PROC, ha, SA_CIPHER_ALG_NULL,
				 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
				 SA_OPCODE_HASH, DIR_INBOUND);
	set_dynamic_sa_command_1(&sa->ctrl, 0, SA_HASH_MODE_HASH,
				 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
				 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
				 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
				 SA_NOT_COPY_HDR);
	/* Need to zero hash digest in SA */
	memset(sa->inner_digest, 0, sizeof(sa->inner_digest));
	memset(sa->outer_digest, 0, sizeof(sa->outer_digest));

	return 0;
}
示例#5
0
int crypto4xx_setkey_aes_gcm(struct crypto_aead *cipher,
			     const u8 *key, unsigned int keylen)
{
	struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
	struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
	struct dynamic_sa_ctl *sa;
	int    rc = 0;

	if (crypto4xx_aes_gcm_validate_keylen(keylen) != 0) {
		crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
		return -EINVAL;
	}

	rc = crypto4xx_setup_fallback(ctx, cipher, key, keylen);
	if (rc)
		return rc;

	if (ctx->sa_in || ctx->sa_out)
		crypto4xx_free_sa(ctx);

	rc = crypto4xx_alloc_sa(ctx, SA_AES128_GCM_LEN + (keylen - 16) / 4);
	if (rc)
		return rc;

	sa  = (struct dynamic_sa_ctl *) ctx->sa_in;

	sa->sa_contents.w = SA_AES_GCM_CONTENTS | (keylen << 2);
	set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
				 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
				 SA_NO_HEADER_PROC, SA_HASH_ALG_GHASH,
				 SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
				 SA_OP_GROUP_BASIC, SA_OPCODE_HASH_DECRYPT,
				 DIR_INBOUND);
	set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
				 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
				 SA_SEQ_MASK_ON, SA_MC_DISABLE,
				 SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
				 SA_NOT_COPY_HDR);

	sa->sa_command_1.bf.key_len = keylen >> 3;

	crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
				 key, keylen);

	rc = crypto4xx_compute_gcm_hash_key_sw(get_dynamic_sa_inner_digest(sa),
		key, keylen);
	if (rc) {
		pr_err("GCM hash key setting failed = %d\n", rc);
		goto err;
	}

	memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
	sa = (struct dynamic_sa_ctl *) ctx->sa_out;
	sa->sa_command_0.bf.dir = DIR_OUTBOUND;
	sa->sa_command_0.bf.opcode = SA_OPCODE_ENCRYPT_HASH;

	return 0;
err:
	crypto4xx_free_sa(ctx);
	return rc;
}