#include "rte_aesni_mb_pmd_private.h"
+#define AES_CCM_DIGEST_MIN_LEN 4
+#define AES_CCM_DIGEST_MAX_LEN 16
+#define HMAC_MAX_BLOCK_SIZE 128
static uint8_t cryptodev_driver_id;
typedef void (*hash_one_block_t)(const void *data, void *digest);
const struct rte_crypto_sym_xform *xform)
{
hash_one_block_t hash_oneblock_fn;
+ unsigned int key_larger_block_size = 0;
+ uint8_t hashed_key[HMAC_MAX_BLOCK_SIZE] = { 0 };
if (xform == NULL) {
sess->auth.algo = NULL_HASH;
return -1;
}
+ /* Set the request digest size */
+ sess->auth.req_digest_len = xform->auth.digest_length;
+
/* Select auth generate/verify */
sess->auth.operation = xform->auth.op;
/* Set Authentication Parameters */
if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
sess->auth.algo = AES_XCBC;
+
+ uint16_t xcbc_mac_digest_len =
+ get_truncated_digest_byte_length(AES_XCBC);
+ if (sess->auth.req_digest_len != xcbc_mac_digest_len) {
+ AESNI_MB_LOG(ERR, "Invalid digest size\n");
+ return -EINVAL;
+ }
+ sess->auth.gen_digest_len = sess->auth.req_digest_len;
(*mb_ops->aux.keyexp.aes_xcbc)(xform->auth.key.data,
sess->auth.xcbc.k1_expanded,
sess->auth.xcbc.k2, sess->auth.xcbc.k3);
if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_CMAC) {
sess->auth.algo = AES_CMAC;
+
+ uint16_t cmac_digest_len = get_digest_byte_length(AES_CMAC);
+
+ if (sess->auth.req_digest_len > cmac_digest_len) {
+ AESNI_MB_LOG(ERR, "Invalid digest size\n");
+ return -EINVAL;
+ }
+ /*
+ * Multi-buffer lib supports digest sizes from 4 to 16 bytes
+ * in version 0.50 and sizes of 12 and 16 bytes,
+ * in version 0.49.
+ * If size requested is different, generate the full digest
+ * (16 bytes) in a temporary location and then memcpy
+ * the requested number of bytes.
+ */
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (sess->auth.req_digest_len < 4)
+#else
+ uint16_t cmac_trunc_digest_len =
+ get_truncated_digest_byte_length(AES_CMAC);
+ if (sess->auth.req_digest_len != cmac_digest_len &&
+ sess->auth.req_digest_len != cmac_trunc_digest_len)
+#endif
+ sess->auth.gen_digest_len = cmac_digest_len;
+ else
+ sess->auth.gen_digest_len = sess->auth.req_digest_len;
(*mb_ops->aux.keyexp.aes_cmac_expkey)(xform->auth.key.data,
sess->auth.cmac.expkey);
return 0;
}
-
switch (xform->auth.algo) {
case RTE_CRYPTO_AUTH_MD5_HMAC:
sess->auth.algo = MD5;
case RTE_CRYPTO_AUTH_SHA1_HMAC:
sess->auth.algo = SHA1;
hash_oneblock_fn = mb_ops->aux.one_block.sha1;
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (xform->auth.key.length > get_auth_algo_blocksize(SHA1)) {
+ mb_ops->aux.multi_block.sha1(
+ xform->auth.key.data,
+ xform->auth.key.length,
+ hashed_key);
+ key_larger_block_size = 1;
+ }
+#endif
break;
case RTE_CRYPTO_AUTH_SHA224_HMAC:
sess->auth.algo = SHA_224;
hash_oneblock_fn = mb_ops->aux.one_block.sha224;
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (xform->auth.key.length > get_auth_algo_blocksize(SHA_224)) {
+ mb_ops->aux.multi_block.sha224(
+ xform->auth.key.data,
+ xform->auth.key.length,
+ hashed_key);
+ key_larger_block_size = 1;
+ }
+#endif
break;
case RTE_CRYPTO_AUTH_SHA256_HMAC:
sess->auth.algo = SHA_256;
hash_oneblock_fn = mb_ops->aux.one_block.sha256;
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (xform->auth.key.length > get_auth_algo_blocksize(SHA_256)) {
+ mb_ops->aux.multi_block.sha256(
+ xform->auth.key.data,
+ xform->auth.key.length,
+ hashed_key);
+ key_larger_block_size = 1;
+ }
+#endif
break;
case RTE_CRYPTO_AUTH_SHA384_HMAC:
sess->auth.algo = SHA_384;
hash_oneblock_fn = mb_ops->aux.one_block.sha384;
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (xform->auth.key.length > get_auth_algo_blocksize(SHA_384)) {
+ mb_ops->aux.multi_block.sha384(
+ xform->auth.key.data,
+ xform->auth.key.length,
+ hashed_key);
+ key_larger_block_size = 1;
+ }
+#endif
break;
case RTE_CRYPTO_AUTH_SHA512_HMAC:
sess->auth.algo = SHA_512;
hash_oneblock_fn = mb_ops->aux.one_block.sha512;
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (xform->auth.key.length > get_auth_algo_blocksize(SHA_512)) {
+ mb_ops->aux.multi_block.sha512(
+ xform->auth.key.data,
+ xform->auth.key.length,
+ hashed_key);
+ key_larger_block_size = 1;
+ }
+#endif
break;
default:
AESNI_MB_LOG(ERR, "Unsupported authentication algorithm selection");
return -ENOTSUP;
}
+ uint16_t trunc_digest_size =
+ get_truncated_digest_byte_length(sess->auth.algo);
+ uint16_t full_digest_size =
+ get_digest_byte_length(sess->auth.algo);
+
+#if IMB_VERSION_NUM >= IMB_VERSION(0, 50, 0)
+ if (sess->auth.req_digest_len > full_digest_size ||
+ sess->auth.req_digest_len == 0) {
+#else
+ if (sess->auth.req_digest_len != trunc_digest_size) {
+#endif
+ AESNI_MB_LOG(ERR, "Invalid digest size\n");
+ return -EINVAL;
+ }
+
+ if (sess->auth.req_digest_len != trunc_digest_size &&
+ sess->auth.req_digest_len != full_digest_size)
+ sess->auth.gen_digest_len = full_digest_size;
+ else
+ sess->auth.gen_digest_len = sess->auth.req_digest_len;
/* Calculate Authentication precomputes */
- calculate_auth_precomputes(hash_oneblock_fn,
+ if (key_larger_block_size) {
+ calculate_auth_precomputes(hash_oneblock_fn,
+ sess->auth.pads.inner, sess->auth.pads.outer,
+ hashed_key,
+ xform->auth.key.length,
+ get_auth_algo_blocksize(sess->auth.algo));
+ } else {
+ calculate_auth_precomputes(hash_oneblock_fn,
sess->auth.pads.inner, sess->auth.pads.outer,
xform->auth.key.data,
xform->auth.key.length,
get_auth_algo_blocksize(sess->auth.algo));
+ }
return 0;
}
sess->iv.offset = xform->aead.iv.offset;
sess->iv.length = xform->aead.iv.length;
+ sess->auth.req_digest_len = xform->aead.digest_length;
+ /* CCM digests must be between 4 and 16 and an even number */
+ if (sess->auth.req_digest_len < AES_CCM_DIGEST_MIN_LEN ||
+ sess->auth.req_digest_len > AES_CCM_DIGEST_MAX_LEN ||
+ (sess->auth.req_digest_len & 1) == 1) {
+ AESNI_MB_LOG(ERR, "Invalid digest size\n");
+ return -EINVAL;
+ }
+ sess->auth.gen_digest_len = sess->auth.req_digest_len;
+
/* Check key length and choose key expansion function for AES */
switch (xform->aead.key.length) {
sess->chain_order = HASH_CIPHER;
auth_xform = xform;
cipher_xform = xform->next;
- sess->auth.digest_len = xform->auth.digest_length;
break;
case AESNI_MB_OP_CIPHER_HASH:
sess->chain_order = CIPHER_HASH;
auth_xform = xform->next;
cipher_xform = xform;
- sess->auth.digest_len = xform->auth.digest_length;
break;
case AESNI_MB_OP_HASH_ONLY:
sess->chain_order = HASH_CIPHER;
auth_xform = xform;
cipher_xform = NULL;
- sess->auth.digest_len = xform->auth.digest_length;
break;
case AESNI_MB_OP_CIPHER_ONLY:
/*
case AESNI_MB_OP_AEAD_CIPHER_HASH:
sess->chain_order = CIPHER_HASH;
sess->aead.aad_len = xform->aead.aad_length;
- sess->auth.digest_len = xform->aead.digest_length;
aead_xform = xform;
break;
case AESNI_MB_OP_AEAD_HASH_CIPHER:
sess->chain_order = HASH_CIPHER;
sess->aead.aad_len = xform->aead.aad_length;
- sess->auth.digest_len = xform->aead.digest_length;
aead_xform = xform;
break;
case AESNI_MB_OP_NOT_SUPPORTED:
job->auth_tag_output = op->sym->aead.digest.data;
else
job->auth_tag_output = op->sym->auth.digest.data;
- }
- /*
- * Multi-buffer library current only support returning a truncated
- * digest length as specified in the relevant IPsec RFCs
- */
- if (job->hash_alg != AES_CCM && job->hash_alg != AES_CMAC)
- job->auth_tag_output_len_in_bytes =
- get_truncated_digest_byte_length(job->hash_alg);
- else
- job->auth_tag_output_len_in_bytes = session->auth.digest_len;
+ if (session->auth.req_digest_len != session->auth.gen_digest_len) {
+ job->auth_tag_output = qp->temp_digests[*digest_idx];
+ *digest_idx = (*digest_idx + 1) % MAX_JOBS;
+ }
+ }
+ /* Set digest length */
+ job->auth_tag_output_len_in_bytes = session->auth.gen_digest_len;
/* Set IV parameters */
-
job->iv_len_in_bytes = session->iv.length;
/* Data Parameter */
}
static inline void
-verify_digest(struct aesni_mb_qp *qp __rte_unused, JOB_AES_HMAC *job,
- struct rte_crypto_op *op) {
+verify_digest(JOB_AES_HMAC *job, struct rte_crypto_op *op,
+ struct aesni_mb_session *sess)
+{
/* Verify digest if required */
if (job->hash_alg == AES_CCM) {
if (memcmp(job->auth_tag_output, op->sym->aead.digest.data,
- job->auth_tag_output_len_in_bytes) != 0)
+ sess->auth.req_digest_len) != 0)
op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
} else {
if (memcmp(job->auth_tag_output, op->sym->auth.digest.data,
- job->auth_tag_output_len_in_bytes) != 0)
+ sess->auth.req_digest_len) != 0)
op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
}
}
+static inline void
+generate_digest(JOB_AES_HMAC *job, struct rte_crypto_op *op,
+ struct aesni_mb_session *sess)
+{
+ /* No extra copy neeed */
+ if (likely(sess->auth.req_digest_len == sess->auth.gen_digest_len))
+ return;
+
+ /*
+ * This can only happen for HMAC, so only digest
+ * for authentication algos is required
+ */
+ memcpy(op->sym->auth.digest.data, job->auth_tag_output,
+ sess->auth.req_digest_len);
+}
+
/**
* Process a completed job and return rte_mbuf which job processed
*
if (job->hash_alg != NULL_HASH) {
if (sess->auth.operation ==
RTE_CRYPTO_AUTH_OP_VERIFY)
- verify_digest(qp, job, op);
+ verify_digest(job, op, sess);
+ else
+ generate_digest(job, op, sess);
}
break;
default:
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