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return SHA1 hash of TPM Quote Info in calculate_quote_digest

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This commit is contained in:
Sansar Choinyambuu
2011-11-28 14:39:51 +01:00
committed by Andreas Steffen
parent 67299653e4
commit 2eb3dc40b9
1 changed files with 9 additions and 3 deletions
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src/libpts/pts/pts.c
+9 -3
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@@ -1103,7 +1103,7 @@ static chunk_t calculate_quote_digest(private_pts_t *this, linked_list_t *pcr_en
{ {
enumerator_t *e; enumerator_t *e;
pcr_entry_t *pcr_entry; pcr_entry_t *pcr_entry;
chunk_t digest, pcr_composite, hash_pcr_composite; chunk_t digest, hash_digest, pcr_composite, hash_pcr_composite;
u_int32_t pcr_composite_len; u_int32_t pcr_composite_len;
bio_writer_t *writer; bio_writer_t *writer;
u_int8_t mask_bytes[MAX_NUM_PCR / 8], i; u_int8_t mask_bytes[MAX_NUM_PCR / 8], i;
@@ -1161,17 +1161,23 @@ static chunk_t calculate_quote_digest(private_pts_t *this, linked_list_t *pcr_en
/* Secret assessment value 20 bytes (nonce) */ /* Secret assessment value 20 bytes (nonce) */
writer->write_data(writer, this->secret); writer->write_data(writer, this->secret);
/* TPM Quote Info expected from IMC */ /* TPM Quote Info */
digest = chunk_clone(writer->get_buf(writer)); digest = chunk_clone(writer->get_buf(writer));
DBG3(DBG_PTS, "Calculated TPM Quote Digest: %B", &digest);
/* SHA1(TPM Quote Info) expected from IMC */
hasher->allocate_hash(hasher, digest, &hash_digest);
hash_digest = chunk_clone(hash_digest);
e->destroy(e); e->destroy(e);
writer->destroy(writer); writer->destroy(writer);
hasher->destroy(hasher); hasher->destroy(hasher);
chunk_clear(&pcr_composite); chunk_clear(&pcr_composite);
chunk_clear(&hash_pcr_composite); chunk_clear(&hash_pcr_composite);
chunk_clear(&digest);
pcr_entries->destroy(pcr_entries); pcr_entries->destroy(pcr_entries);
return digest; return hash_digest;
} }
METHOD(pts_t, get_quote_digest, bool, METHOD(pts_t, get_quote_digest, bool,