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tpm: rename and export tpm2_digest and tpm2_algorithms

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Rename tpm2_* to tpm_* and move the definitions to include/linux/tpm.h so
that these can be used by other kernel subsystems (e.g. IMA).

Also, set the length of the digest array in tpm_digest to a new constant
named TPM_MAX_DIGEST_SIZE, equal to SHA512_DIGEST_SIZE.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Roberto Sassu
2019-02-06 17:24:48 +01:00
committed by Jarkko Sakkinen
parent bcfff8384f
commit aa04247593
6 changed files with 33 additions and 30 deletions
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19
include/linux/tpm.h
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@@ -22,12 +22,31 @@
#ifndef __LINUX_TPM_H__
#define __LINUX_TPM_H__
#include <crypto/hash_info.h>
#define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */
#define TPM_MAX_DIGEST_SIZE SHA512_DIGEST_SIZE
struct tpm_chip;
struct trusted_key_payload;
struct trusted_key_options;
enum tpm_algorithms {
TPM_ALG_ERROR = 0x0000,
TPM_ALG_SHA1 = 0x0004,
TPM_ALG_KEYEDHASH = 0x0008,
TPM_ALG_SHA256 = 0x000B,
TPM_ALG_SHA384 = 0x000C,
TPM_ALG_SHA512 = 0x000D,
TPM_ALG_NULL = 0x0010,
TPM_ALG_SM3_256 = 0x0012,
};
struct tpm_digest {
u16 alg_id;
u8 digest[TPM_MAX_DIGEST_SIZE];
} __packed;
enum TPM_OPS_FLAGS {
TPM_OPS_AUTO_STARTUP = BIT(0),
};