diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2016-01-12 11:17:38 -0600 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-25 22:39:03 +0800 |
| commit | 952bce9792e6bf36fda09c2e5718abb5d9327369 (patch) | |
| tree | 359ceba8c362fe0c6bb73ddf15a377a5cc8f824d /drivers/crypto/ccp/ccp-crypto-aes-cmac.c | |
| parent | 624144a7eb2c9abcf76722d29f983cdf9801bb2e (diff) | |
crypto: ccp - Add hash state import and export support
Commit 8996eafdcbad ("crypto: ahash - ensure statesize is non-zero")
added a check to prevent ahash algorithms from successfully registering
if the import and export functions were not implemented. This prevents
an oops in the hash_accept function of algif_hash. This commit causes
the ccp-crypto module SHA support and AES CMAC support from successfully
registering and causing the ccp-crypto module load to fail because the
ahash import and export functions are not implemented.
Update the CCP Crypto API support to provide import and export support
for ahash algorithms.
Cc: <stable@vger.kernel.org> # 3.14.x-
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/ccp-crypto-aes-cmac.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-aes-cmac.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c index d89f20c04266..00207cf5c79b 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c @@ -220,6 +220,26 @@ static int ccp_aes_cmac_digest(struct ahash_request *req) return ccp_aes_cmac_finup(req); } +static int ccp_aes_cmac_export(struct ahash_request *req, void *out) +{ + struct ccp_aes_cmac_req_ctx *rctx = ahash_request_ctx(req); + struct ccp_aes_cmac_req_ctx *state = out; + + *state = *rctx; + + return 0; +} + +static int ccp_aes_cmac_import(struct ahash_request *req, const void *in) +{ + struct ccp_aes_cmac_req_ctx *rctx = ahash_request_ctx(req); + const struct ccp_aes_cmac_req_ctx *state = in; + + *rctx = *state; + + return 0; +} + static int ccp_aes_cmac_setkey(struct crypto_ahash *tfm, const u8 *key, unsigned int key_len) { @@ -352,10 +372,13 @@ int ccp_register_aes_cmac_algs(struct list_head *head) alg->final = ccp_aes_cmac_final; alg->finup = ccp_aes_cmac_finup; alg->digest = ccp_aes_cmac_digest; + alg->export = ccp_aes_cmac_export; + alg->import = ccp_aes_cmac_import; alg->setkey = ccp_aes_cmac_setkey; halg = &alg->halg; halg->digestsize = AES_BLOCK_SIZE; + halg->statesize = sizeof(struct ccp_aes_cmac_req_ctx); base = &halg->base; snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "cmac(aes)"); |