diff options
| author | Hook, Gary <Gary.Hook@amd.com> | 2019-05-15 00:53:30 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-05-23 09:01:07 +0300 |
| commit | 89646fdda4cae203185444ac7988835f36a21ee1 (patch) | |
| tree | c2c7fdbc3b090914cc19fa14ed6d52978a6279bd /drivers/crypto | |
| parent | c3b359d6567c0b8f413e924feb37cf025067d55a (diff) | |
| download | linux-89646fdda4cae203185444ac7988835f36a21ee1.tar.xz | |
crypto: ccp - Fix 3DES complaint from ccp-crypto module
Crypto self-tests reveal an error:
alg: skcipher: cbc-des3-ccp encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
The offset value should not be recomputed when retrieving the context.
Also, a code path exists which makes decisions based on older (version 3)
hardware; a v3 device deosn't support 3DES so remove this check.
Fixes: 990672d48515 ('crypto: ccp - Enable 3DES function on v5 CCPs')
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/ccp/ccp-ops.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c index 3ecadeab919c..b116d62991c6 100644 --- a/drivers/crypto/ccp/ccp-ops.c +++ b/drivers/crypto/ccp/ccp-ops.c @@ -1267,6 +1267,9 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) int ret; /* Error checks */ + if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) + return -EINVAL; + if (!cmd_q->ccp->vdata->perform->des3) return -EINVAL; @@ -1349,8 +1352,6 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) * passthru option to convert from big endian to little endian. */ if (des3->mode != CCP_DES3_MODE_ECB) { - u32 load_mode; - op.sb_ctx = cmd_q->sb_ctx; ret = ccp_init_dm_workarea(&ctx, cmd_q, @@ -1366,12 +1367,8 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) if (ret) goto e_ctx; - if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) - load_mode = CCP_PASSTHRU_BYTESWAP_NOOP; - else - load_mode = CCP_PASSTHRU_BYTESWAP_256BIT; ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, - load_mode); + CCP_PASSTHRU_BYTESWAP_256BIT); if (ret) { cmd->engine_error = cmd_q->cmd_error; goto e_ctx; @@ -1433,10 +1430,6 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) } /* ...but we only need the last DES3_EDE_BLOCK_SIZE bytes */ - if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) - dm_offset = CCP_SB_BYTES - des3->iv_len; - else - dm_offset = 0; ccp_get_dm_area(&ctx, dm_offset, des3->iv, 0, DES3_EDE_BLOCK_SIZE); } |