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tpm: Add a constant for the minimum supported digest size

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When SHA1 is used we need 20 bytes for the digest size. Add a constant so
that clients can make use of this, e.g. to allocate local buffers.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2018-11-18 14:22:25 -07:00
parent 33810b4e7d
commit 07e127d85d
1 changed files with 2 additions and 0 deletions
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2
include/tpm-common.h
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@ -26,6 +26,8 @@ enum tpm_duration {
/* Max buffer size supported by our tpm */
#define TPM_DEV_BUFSIZE 1260
#define TPM_PCR_MINIMUM_DIGEST_SIZE 20
/**
* enum tpm_version - The version of the TPM stack to be used
* @TPM_V1: Use TPM v1.x stack