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crypto: chelsio - Add authenc versions of ctr and sha 

Add ctr and sha combination of algo in authenc mode.

Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Harsh Jain 2018-01-11 16:45:51 +05:30 committed by Herbert Xu
parent 209897d54a
commit 3d64bd6702
2 changed files with 199 additions and 23 deletions
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215
drivers/crypto/chelsio/chcr_algo.c Executable file → Normal file
View File

@ -2090,7 +2090,7 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req,
struct cpl_rx_phys_dsgl *phys_cpl;
struct ulptx_sgl *ulptx;
unsigned int transhdr_len;
unsigned int dst_size = 0, temp;
unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
unsigned int kctx_len = 0, dnents;
unsigned int assoclen = req->assoclen;
unsigned int authsize = crypto_aead_authsize(tfm);
@ -2104,7 +2104,8 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req,
return NULL;
reqctx->b0_dma = 0;
if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_NULL) {
if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
null = 1;
assoclen = 0;
}
@ -2169,16 +2170,23 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req,
temp & 0xF,
null ? 0 : assoclen + IV + 1,
temp, temp);
if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
else
temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
(op_type == CHCR_ENCRYPT_OP) ? 1 : 0,
CHCR_SCMD_CIPHER_MODE_AES_CBC,
temp,
actx->auth_mode, aeadctx->hmac_ctrl,
IV >> 1);
chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
0, 0, dst_size);
chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
if (op_type == CHCR_ENCRYPT_OP)
if (op_type == CHCR_ENCRYPT_OP ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
memcpy(chcr_req->key_ctx.key, aeadctx->key,
aeadctx->enckey_len);
else
@ -2188,7 +2196,16 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req,
memcpy(chcr_req->key_ctx.key + (DIV_ROUND_UP(aeadctx->enckey_len, 16) <<
4), actx->h_iopad, kctx_len -
(DIV_ROUND_UP(aeadctx->enckey_len, 16) << 4));
memcpy(reqctx->iv, req->iv, IV);
if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
CTR_RFC3686_IV_SIZE);
*(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
} else {
memcpy(reqctx->iv, req->iv, IV);
}
phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
@ -3216,7 +3233,7 @@ static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
/* it contains auth and cipher key both*/
struct crypto_authenc_keys keys;
unsigned int bs;
unsigned int bs, subtype;
unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
int err = 0, i, key_ctx_len = 0;
unsigned char ck_size = 0;
@ -3245,6 +3262,15 @@ static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
pr_err("chcr : Unsupported digest size\n");
goto out;
}
subtype = get_aead_subtype(authenc);
if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
goto out;
memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
- CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
}
if (keys.enckeylen == AES_KEYSIZE_128) {
ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
} else if (keys.enckeylen == AES_KEYSIZE_192) {
@ -3262,9 +3288,12 @@ static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
*/
memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
aeadctx->enckey_len = keys.enckeylen;
get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
aeadctx->enckey_len << 3);
if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
aeadctx->enckey_len << 3);
}
base_hash = chcr_alloc_shash(max_authsize);
if (IS_ERR(base_hash)) {
pr_err("chcr : Base driver cannot be loaded\n");
@ -3337,6 +3366,7 @@ static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
struct crypto_authenc_keys keys;
int err;
/* it contains auth and cipher key both*/
unsigned int subtype;
int key_ctx_len = 0;
unsigned char ck_size = 0;
@ -3354,6 +3384,15 @@ static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
goto out;
}
subtype = get_aead_subtype(authenc);
if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
goto out;
memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
- CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
}
if (keys.enckeylen == AES_KEYSIZE_128) {
ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
} else if (keys.enckeylen == AES_KEYSIZE_192) {
@ -3361,13 +3400,16 @@ static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
} else if (keys.enckeylen == AES_KEYSIZE_256) {
ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
} else {
pr_err("chcr : Unsupported cipher key\n");
pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
goto out;
}
memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
aeadctx->enckey_len = keys.enckeylen;
get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
aeadctx->enckey_len << 3);
if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
aeadctx->enckey_len << 3);
}
key_ctx_len = sizeof(struct _key_ctx)
+ ((DIV_ROUND_UP(keys.enckeylen, 16)) << 4);
@ -3421,8 +3463,10 @@ static int chcr_aead_encrypt(struct aead_request *req)
reqctx->verify = VERIFY_HW;
switch (get_aead_subtype(tfm)) {
case CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC:
case CRYPTO_ALG_SUB_TYPE_AEAD_NULL:
case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
create_authenc_wr);
case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
@ -3451,8 +3495,10 @@ static int chcr_aead_decrypt(struct aead_request *req)
}
switch (get_aead_subtype(tfm)) {
case CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC:
case CRYPTO_ALG_SUB_TYPE_AEAD_NULL:
case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
create_authenc_wr);
case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
@ -3748,7 +3794,7 @@ static struct chcr_alg_template driver_algs[] = {
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC,
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
@ -3769,7 +3815,7 @@ static struct chcr_alg_template driver_algs[] = {
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC,
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
@ -3791,7 +3837,7 @@ static struct chcr_alg_template driver_algs[] = {
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC,
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
@ -3811,7 +3857,7 @@ static struct chcr_alg_template driver_algs[] = {
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC,
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
@ -3832,7 +3878,7 @@ static struct chcr_alg_template driver_algs[] = {
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC,
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
@ -3853,7 +3899,7 @@ static struct chcr_alg_template driver_algs[] = {
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_NULL,
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
.is_registered = 0,
.alg.aead = {
.base = {
@ -3873,6 +3919,133 @@ static struct chcr_alg_template driver_algs[] = {
.setauthsize = chcr_authenc_null_setauthsize,
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
.cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
.cra_driver_name =
"authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
.cra_blocksize = 1,
.cra_priority = CHCR_AEAD_PRIORITY,
.cra_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_authenc_ctx),
},
.ivsize = CTR_RFC3686_IV_SIZE,
.maxauthsize = SHA1_DIGEST_SIZE,
.setkey = chcr_authenc_setkey,
.setauthsize = chcr_authenc_setauthsize,
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
.cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
.cra_driver_name =
"authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
.cra_blocksize = 1,
.cra_priority = CHCR_AEAD_PRIORITY,
.cra_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_authenc_ctx),
},
.ivsize = CTR_RFC3686_IV_SIZE,
.maxauthsize = SHA256_DIGEST_SIZE,
.setkey = chcr_authenc_setkey,
.setauthsize = chcr_authenc_setauthsize,
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
.cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
.cra_driver_name =
"authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
.cra_blocksize = 1,
.cra_priority = CHCR_AEAD_PRIORITY,
.cra_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_authenc_ctx),
},
.ivsize = CTR_RFC3686_IV_SIZE,
.maxauthsize = SHA224_DIGEST_SIZE,
.setkey = chcr_authenc_setkey,
.setauthsize = chcr_authenc_setauthsize,
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
.cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
.cra_driver_name =
"authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
.cra_blocksize = 1,
.cra_priority = CHCR_AEAD_PRIORITY,
.cra_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_authenc_ctx),
},
.ivsize = CTR_RFC3686_IV_SIZE,
.maxauthsize = SHA384_DIGEST_SIZE,
.setkey = chcr_authenc_setkey,
.setauthsize = chcr_authenc_setauthsize,
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
.is_registered = 0,
.alg.aead = {
.base = {
.cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
.cra_driver_name =
"authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
.cra_blocksize = 1,
.cra_priority = CHCR_AEAD_PRIORITY,
.cra_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_authenc_ctx),
},
.ivsize = CTR_RFC3686_IV_SIZE,
.maxauthsize = SHA512_DIGEST_SIZE,
.setkey = chcr_authenc_setkey,
.setauthsize = chcr_authenc_setauthsize,
}
},
{
.type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
.is_registered = 0,
.alg.aead = {
.base = {
.cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
.cra_driver_name =
"authenc-digest_null-rfc3686-ctr-aes-chcr",
.cra_blocksize = 1,
.cra_priority = CHCR_AEAD_PRIORITY,
.cra_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_authenc_ctx),
},
.ivsize = CTR_RFC3686_IV_SIZE,
.maxauthsize = 0,
.setkey = chcr_aead_digest_null_setkey,
.setauthsize = chcr_authenc_null_setauthsize,
}
},
};
/*

7
drivers/crypto/chelsio/chcr_crypto.h
View File

@ -134,14 +134,16 @@
#define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 0x02000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_GCM 0x03000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC 0x04000000
#define CRYPTO_ALG_SUB_TYPE_CBC_SHA 0x04000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_NULL 0x07000000
#define CRYPTO_ALG_SUB_TYPE_CBC_NULL 0x07000000
#define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000
#define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 0x09000000
#define CRYPTO_ALG_SUB_TYPE_XTS 0x0a000000
#define CRYPTO_ALG_SUB_TYPE_CBC 0x0b000000
#define CRYPTO_ALG_SUB_TYPE_CTR_SHA 0x0c000000
#define CRYPTO_ALG_SUB_TYPE_CTR_NULL 0x0d000000
#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
@ -231,6 +233,7 @@ struct chcr_aead_ctx {
struct crypto_aead *sw_cipher;
u8 salt[MAX_SALT];
u8 key[CHCR_AES_MAX_KEY_LEN];
u8 nonce[4];
u16 hmac_ctrl;
u16 mayverify;
struct __aead_ctx ctx[0];