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authorJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2015-10-30 14:57:02 +0200
committerJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2015-11-09 17:52:55 +0200
commit2e31125c241212e2407d61a2d1cbdad0055a30b0 (patch)
tree05e79124d15a123b780969a00a6af7218ab2df7e /drivers/char
parentb1a4144a695ff4a6834a2680600f36f991fa4926 (diff)
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.c15
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);