diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2015-10-30 14:57:02 +0200 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2015-11-09 17:52:55 +0200 |
| commit | 2e31125c241212e2407d61a2d1cbdad0055a30b0 (patch) | |
| tree | 05e79124d15a123b780969a00a6af7218ab2df7e /drivers/char | |
| parent | b1a4144a695ff4a6834a2680600f36f991fa4926 (diff) | |
| download | lwn-2e31125c241212e2407d61a2d1cbdad0055a30b0.tar.gz lwn-2e31125c241212e2407d61a2d1cbdad0055a30b0.zip | |
tpm: fix missing migratable flag in sealing functionality for TPM2
The 'migratable' flag was not added to the key payload. This patch
fixes the problem.
Fixes: 0fe5480303a1 ("keys, trusted: seal/unseal with TPM 2.0 chips")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Acked-by: Peter Huewe <PeterHuewe@gmx.de>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm2-cmd.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index bd7039fafa8a..c12130485fc1 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -443,12 +443,13 @@ int tpm2_seal_trusted(struct tpm_chip *chip, TPM_DIGEST_SIZE); /* sensitive */ - tpm_buf_append_u16(&buf, 4 + TPM_DIGEST_SIZE + payload->key_len); + tpm_buf_append_u16(&buf, 4 + TPM_DIGEST_SIZE + payload->key_len + 1); tpm_buf_append_u16(&buf, TPM_DIGEST_SIZE); tpm_buf_append(&buf, options->blobauth, TPM_DIGEST_SIZE); - tpm_buf_append_u16(&buf, payload->key_len); + tpm_buf_append_u16(&buf, payload->key_len + 1); tpm_buf_append(&buf, payload->key, payload->key_len); + tpm_buf_append_u8(&buf, payload->migratable); /* public */ tpm_buf_append_u16(&buf, 14); @@ -573,6 +574,8 @@ static int tpm2_unseal(struct tpm_chip *chip, u32 blob_handle) { struct tpm_buf buf; + u16 data_len; + u8 *data; int rc; rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_UNSEAL); @@ -591,11 +594,13 @@ static int tpm2_unseal(struct tpm_chip *chip, rc = -EPERM; if (!rc) { - payload->key_len = be16_to_cpup( + data_len = be16_to_cpup( (__be16 *) &buf.data[TPM_HEADER_SIZE + 4]); + data = &buf.data[TPM_HEADER_SIZE + 6]; - memcpy(payload->key, &buf.data[TPM_HEADER_SIZE + 6], - payload->key_len); + memcpy(payload->key, data, data_len - 1); + payload->key_len = data_len - 1; + payload->migratable = data[data_len - 1]; } tpm_buf_destroy(&buf); |