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tpm: fix missing migratable flag in sealing functionality for TPM2

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The 'migratable' flag was not added to the key payload. This patch
fixes the problem.

Fixes: 0fe5480303 ("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>
This commit is contained in:
Jarkko Sakkinen 2015-10-30 14:57:02 +02:00
parent b1a4144a69
commit 2e31125c24
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/char/tpm/tpm2-cmd.c
View File

@ -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);