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Add support for "plain" (non-HMAC) SHA digests.

Browse Source 
MFC after:	2 months
Sponsored by:	Chelsio Communications
This commit is contained in:
jhb 2018-10-29 22:24:31 +00:00
parent c8f20b1577
commit 25a1011775
1 changed files with 95 additions and 21 deletions
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116
sys/dev/cxgbe/crypto/t4_crypto.c
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@ -61,6 +61,8 @@ __FBSDID("$FreeBSD$");
* | key context header |
* +-------------------------------+
* | AES key | ----- For requests with AES
* +-------------------------------+
* | Hash state | ----- For hash-only requests
* +-------------------------------+ -
* | IPAD (16-byte aligned) | \
* +-------------------------------+ +---- For requests with HMAC
@ -72,7 +74,7 @@ __FBSDID("$FreeBSD$");
* +-------------------------------+ +---- Destination buffer for
* | PHYS_DSGL entries | / non-hash-only requests
* +-------------------------------+ -
* | 16 dummy bytes | ----- Only for hash-only requests
* | 16 dummy bytes | ----- Only for HMAC/hash-only requests
* +-------------------------------+
* | IV | ----- If immediate IV
* +-------------------------------+
@ -160,7 +162,7 @@ struct ccr_session_blkcipher {
struct ccr_session {
bool active;
int pending;
enum { HMAC, BLKCIPHER, AUTHENC, GCM } mode;
enum { HASH, HMAC, BLKCIPHER, AUTHENC, GCM } mode;
union {
struct ccr_session_hmac hmac;
struct ccr_session_gmac gmac;
@ -200,6 +202,7 @@ struct ccr_softc {
/* Statistics. */
uint64_t stats_blkcipher_encrypt;
uint64_t stats_blkcipher_decrypt;
uint64_t stats_hash;
uint64_t stats_hmac;
uint64_t stats_authenc_encrypt;
uint64_t stats_authenc_decrypt;
@ -420,7 +423,7 @@ ccr_populate_wreq(struct ccr_softc *sc, struct chcr_wr *crwr, u_int kctx_len,
}
static int
ccr_hmac(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
ccr_hash(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
{
struct chcr_wr *crwr;
struct wrqe *wr;
@ -428,8 +431,8 @@ ccr_hmac(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
struct cryptodesc *crd;
char *dst;
u_int hash_size_in_response, kctx_flits, kctx_len, transhdr_len, wr_len;
u_int imm_len, iopad_size;
int error, sgl_nsegs, sgl_len;
u_int hmac_ctrl, imm_len, iopad_size;
int error, sgl_nsegs, sgl_len, use_opad;
crd = crp->crp_desc;
@ -439,6 +442,14 @@ ccr_hmac(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
axf = s->hmac.auth_hash;
if (s->mode == HMAC) {
use_opad = 1;
hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
} else {
use_opad = 0;
hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
}
/* PADs must be 128-bit aligned. */
iopad_size = roundup2(s->hmac.partial_digest_len, 16);
@ -446,7 +457,9 @@ ccr_hmac(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
* The 'key' part of the context includes the aligned IPAD and
* OPAD.
*/
kctx_len = iopad_size * 2;
kctx_len = iopad_size;
if (use_opad)
kctx_len += iopad_size;
hash_size_in_response = axf->hashsize;
transhdr_len = HASH_TRANSHDR_SIZE(kctx_len);
@ -503,19 +516,21 @@ ccr_hmac(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
V_SCMD_PROTO_VERSION(CHCR_SCMD_PROTO_VERSION_GENERIC) |
V_SCMD_CIPH_MODE(CHCR_SCMD_CIPHER_MODE_NOP) |
V_SCMD_AUTH_MODE(s->hmac.auth_mode) |
V_SCMD_HMAC_CTRL(CHCR_SCMD_HMAC_CTRL_NO_TRUNC));
V_SCMD_HMAC_CTRL(hmac_ctrl));
crwr->sec_cpl.ivgen_hdrlen = htobe32(
V_SCMD_LAST_FRAG(0) |
V_SCMD_MORE_FRAGS(crd->crd_len == 0 ? 1 : 0) | V_SCMD_MAC_ONLY(1));
memcpy(crwr->key_ctx.key, s->hmac.ipad, s->hmac.partial_digest_len);
memcpy(crwr->key_ctx.key + iopad_size, s->hmac.opad,
s->hmac.partial_digest_len);
if (use_opad)
memcpy(crwr->key_ctx.key + iopad_size, s->hmac.opad,
s->hmac.partial_digest_len);
/* XXX: F_KEY_CONTEXT_SALT_PRESENT set, but 'salt' not set. */
kctx_flits = (sizeof(struct _key_ctx) + kctx_len) / 16;
crwr->key_ctx.ctx_hdr = htobe32(V_KEY_CONTEXT_CTX_LEN(kctx_flits) |
V_KEY_CONTEXT_OPAD_PRESENT(1) | V_KEY_CONTEXT_SALT_PRESENT(1) |
V_KEY_CONTEXT_OPAD_PRESENT(use_opad) |
V_KEY_CONTEXT_SALT_PRESENT(1) |
V_KEY_CONTEXT_CK_SIZE(CHCR_KEYCTX_NO_KEY) |
V_KEY_CONTEXT_MK_SIZE(s->hmac.mk_size) | V_KEY_CONTEXT_VALID(1));
@ -537,7 +552,7 @@ ccr_hmac(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp)
}
static int
ccr_hmac_done(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp,
ccr_hash_done(struct ccr_softc *sc, struct ccr_session *s, struct cryptop *crp,
const struct cpl_fw6_pld *cpl, int error)
{
struct cryptodesc *crd;
@ -1591,6 +1606,8 @@ ccr_sysctls(struct ccr_softc *sc)
NULL, "statistics");
children = SYSCTL_CHILDREN(oid);
SYSCTL_ADD_U64(ctx, children, OID_AUTO, "hash", CTLFLAG_RD,
&sc->stats_hash, 0, "Hash requests submitted");
SYSCTL_ADD_U64(ctx, children, OID_AUTO, "hmac", CTLFLAG_RD,
&sc->stats_hmac, 0, "HMAC requests submitted");
SYSCTL_ADD_U64(ctx, children, OID_AUTO, "cipher_encrypt", CTLFLAG_RD,
@ -1666,6 +1683,11 @@ ccr_attach(device_t dev)
sc->sg_iv_aad = sglist_build(sc->iv_aad_buf, MAX_AAD_LEN, M_WAITOK);
ccr_sysctls(sc);
crypto_register(cid, CRYPTO_SHA1, 0, 0);
crypto_register(cid, CRYPTO_SHA2_224, 0, 0);
crypto_register(cid, CRYPTO_SHA2_256, 0, 0);
crypto_register(cid, CRYPTO_SHA2_384, 0, 0);
crypto_register(cid, CRYPTO_SHA2_512, 0, 0);
crypto_register(cid, CRYPTO_SHA1_HMAC, 0, 0);
crypto_register(cid, CRYPTO_SHA2_224_HMAC, 0, 0);
crypto_register(cid, CRYPTO_SHA2_256_HMAC, 0, 0);
@ -1714,22 +1736,27 @@ ccr_copy_partial_hash(void *dst, int cri_alg, union authctx *auth_ctx)
u32 = (uint32_t *)dst;
u64 = (uint64_t *)dst;
switch (cri_alg) {
case CRYPTO_SHA1:
case CRYPTO_SHA1_HMAC:
for (i = 0; i < SHA1_HASH_LEN / 4; i++)
u32[i] = htobe32(auth_ctx->sha1ctx.h.b32[i]);
break;
case CRYPTO_SHA2_224:
case CRYPTO_SHA2_224_HMAC:
for (i = 0; i < SHA2_256_HASH_LEN / 4; i++)
u32[i] = htobe32(auth_ctx->sha224ctx.state[i]);
break;
case CRYPTO_SHA2_256:
case CRYPTO_SHA2_256_HMAC:
for (i = 0; i < SHA2_256_HASH_LEN / 4; i++)
u32[i] = htobe32(auth_ctx->sha256ctx.state[i]);
break;
case CRYPTO_SHA2_384:
case CRYPTO_SHA2_384_HMAC:
for (i = 0; i < SHA2_512_HASH_LEN / 8; i++)
u64[i] = htobe64(auth_ctx->sha384ctx.state[i]);
break;
case CRYPTO_SHA2_512:
case CRYPTO_SHA2_512_HMAC:
for (i = 0; i < SHA2_512_HASH_LEN / 8; i++)
u64[i] = htobe64(auth_ctx->sha512ctx.state[i]);
@ -1737,6 +1764,17 @@ ccr_copy_partial_hash(void *dst, int cri_alg, union authctx *auth_ctx)
}
}
static void
ccr_init_hash_digest(struct ccr_session *s, int cri_alg)
{
union authctx auth_ctx;
struct auth_hash *axf;
axf = s->hmac.auth_hash;
axf->Init(&auth_ctx);
ccr_copy_partial_hash(s->hmac.ipad, cri_alg, &auth_ctx);
}
static void
ccr_init_hmac_digest(struct ccr_session *s, int cri_alg, char *key,
int klen)
@ -1885,12 +1923,13 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
unsigned int auth_mode, cipher_mode, iv_len, mk_size;
unsigned int partial_digest_len;
int error;
bool gcm_hash;
bool gcm_hash, hmac;
if (cri == NULL)
return (EINVAL);
gcm_hash = false;
hmac = false;
cipher = NULL;
hash = NULL;
auth_hash = NULL;
@ -1901,6 +1940,11 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
partial_digest_len = 0;
for (c = cri; c != NULL; c = c->cri_next) {
switch (c->cri_alg) {
case CRYPTO_SHA1:
case CRYPTO_SHA2_224:
case CRYPTO_SHA2_256:
case CRYPTO_SHA2_384:
case CRYPTO_SHA2_512:
case CRYPTO_SHA1_HMAC:
case CRYPTO_SHA2_224_HMAC:
case CRYPTO_SHA2_256_HMAC:
@ -1913,30 +1957,35 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
return (EINVAL);
hash = c;
switch (c->cri_alg) {
case CRYPTO_SHA1:
case CRYPTO_SHA1_HMAC:
auth_hash = &auth_hash_hmac_sha1;
auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
partial_digest_len = SHA1_HASH_LEN;
break;
case CRYPTO_SHA2_224:
case CRYPTO_SHA2_224_HMAC:
auth_hash = &auth_hash_hmac_sha2_224;
auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
partial_digest_len = SHA2_256_HASH_LEN;
break;
case CRYPTO_SHA2_256:
case CRYPTO_SHA2_256_HMAC:
auth_hash = &auth_hash_hmac_sha2_256;
auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
partial_digest_len = SHA2_256_HASH_LEN;
break;
case CRYPTO_SHA2_384:
case CRYPTO_SHA2_384_HMAC:
auth_hash = &auth_hash_hmac_sha2_384;
auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
partial_digest_len = SHA2_512_HASH_LEN;
break;
case CRYPTO_SHA2_512:
case CRYPTO_SHA2_512_HMAC:
auth_hash = &auth_hash_hmac_sha2_512;
auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
@ -1951,6 +2000,15 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
break;
}
switch (c->cri_alg) {
case CRYPTO_SHA1_HMAC:
case CRYPTO_SHA2_224_HMAC:
case CRYPTO_SHA2_256_HMAC:
case CRYPTO_SHA2_384_HMAC:
case CRYPTO_SHA2_512_HMAC:
hmac = true;
break;
}
break;
case CRYPTO_AES_CBC:
case CRYPTO_AES_ICM:
@ -1992,8 +2050,12 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
return (EINVAL);
if (hash == NULL && cipher == NULL)
return (EINVAL);
if (hash != NULL && hash->cri_key == NULL)
return (EINVAL);
if (hash != NULL) {
if ((hmac || gcm_hash) && hash->cri_key == NULL)
return (EINVAL);
if (!(hmac || gcm_hash) && hash->cri_key != NULL)
return (EINVAL);
}
sc = device_get_softc(dev);
mtx_lock(&sc->lock);
@ -2008,9 +2070,12 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
s->mode = GCM;
else if (hash != NULL && cipher != NULL)
s->mode = AUTHENC;
else if (hash != NULL)
s->mode = HMAC;
else {
else if (hash != NULL) {
if (hmac)
s->mode = HMAC;
else
s->mode = HASH;
} else {
MPASS(cipher != NULL);
s->mode = BLKCIPHER;
}
@ -2029,8 +2094,11 @@ ccr_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
s->hmac.hash_len = auth_hash->hashsize;
else
s->hmac.hash_len = hash->cri_mlen;
ccr_init_hmac_digest(s, hash->cri_alg, hash->cri_key,
hash->cri_klen);
if (hmac)
ccr_init_hmac_digest(s, hash->cri_alg, hash->cri_key,
hash->cri_klen);
else
ccr_init_hash_digest(s, hash->cri_alg);
}
if (cipher != NULL) {
s->blkcipher.cipher_mode = cipher_mode;
@ -2085,11 +2153,16 @@ ccr_process(device_t dev, struct cryptop *crp, int hint)
}
switch (s->mode) {
case HASH:
error = ccr_hash(sc, s, crp);
if (error == 0)
sc->stats_hash++;
break;
case HMAC:
if (crd->crd_flags & CRD_F_KEY_EXPLICIT)
ccr_init_hmac_digest(s, crd->crd_alg, crd->crd_key,
crd->crd_klen);
error = ccr_hmac(sc, s, crp);
error = ccr_hash(sc, s, crp);
if (error == 0)
sc->stats_hmac++;
break;
@ -2240,8 +2313,9 @@ do_cpl6_fw_pld(struct sge_iq *iq, const struct rss_header *rss,
sc->stats_inflight--;
switch (s->mode) {
case HASH:
case HMAC:
error = ccr_hmac_done(sc, s, crp, cpl, error);
error = ccr_hash_done(sc, s, crp, cpl, error);
break;
case BLKCIPHER:
error = ccr_blkcipher_done(sc, s, crp, cpl, error);