10  *	Calculates md5/sha1 file hash, template hash, boot-aggreate hash
21 #include <crypto/hash.h>
81 	pr_info("Allocated hash algorithm: %s\n",  in ima_init_ima_crypto()
325 				   struct ima_digest_data *hash,  in ima_calc_file_hash_atfm()  argument
336 	hash->length = crypto_ahash_digestsize(tfm);  in ima_calc_file_hash_atfm()
427 		ahash_request_set_crypt(req, NULL, hash->digest, 0);  in ima_calc_file_hash_atfm()
435 static int ima_calc_file_ahash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_ahash()  argument
440 	tfm = ima_alloc_atfm(hash->algo);  in ima_calc_file_ahash()
444 	rc = ima_calc_file_hash_atfm(file, hash, tfm);  in ima_calc_file_ahash()
452 				  struct ima_digest_data *hash,  in ima_calc_file_hash_tfm()  argument
462 	hash->length = crypto_shash_digestsize(tfm);  in ima_calc_file_hash_tfm()
498 		rc = crypto_shash_final(shash, hash->digest);  in ima_calc_file_hash_tfm()
502 static int ima_calc_file_shash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_shash()  argument
507 	tfm = ima_alloc_tfm(hash->algo);  in ima_calc_file_shash()
511 	rc = ima_calc_file_hash_tfm(file, hash, tfm);  in ima_calc_file_shash()
519  * ima_calc_file_hash - calculate file hash
521  * Asynchronous hash (ahash) allows using HW acceleration for calculating
522  * a hash. ahash performance varies for different data sizes on different
528  * shash for the hash calculation.  If ahash fails, it falls back to using
531 int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_hash()  argument
543 		hash->length = hash_digest_size[ima_hash_algo];  in ima_calc_file_hash()
544 		hash->algo = ima_hash_algo;  in ima_calc_file_hash()
563 		rc = ima_calc_file_ahash(f, hash);  in ima_calc_file_hash()
568 	rc = ima_calc_file_shash(f, hash);  in ima_calc_file_hash()
576  * Calculate the hash of template data
659 				  struct ima_digest_data *hash,  in calc_buffer_ahash_atfm()  argument
667 	hash->length = crypto_ahash_digestsize(tfm);  in calc_buffer_ahash_atfm()
690 		ahash_request_set_crypt(req, NULL, hash->digest, 0);  in calc_buffer_ahash_atfm()
699 			     struct ima_digest_data *hash)  in calc_buffer_ahash()  argument
704 	tfm = ima_alloc_atfm(hash->algo);  in calc_buffer_ahash()
708 	rc = calc_buffer_ahash_atfm(buf, len, hash, tfm);  in calc_buffer_ahash()
716 				struct ima_digest_data *hash,  in calc_buffer_shash_tfm()  argument
725 	hash->length = crypto_shash_digestsize(tfm);  in calc_buffer_shash_tfm()
741 		rc = crypto_shash_final(shash, hash->digest);  in calc_buffer_shash_tfm()
746 			     struct ima_digest_data *hash)  in calc_buffer_shash()  argument
751 	tfm = ima_alloc_tfm(hash->algo);  in calc_buffer_shash()
755 	rc = calc_buffer_shash_tfm(buf, len, hash, tfm);  in calc_buffer_shash()
762 			 struct ima_digest_data *hash)  in ima_calc_buffer_hash()  argument
767 		rc = calc_buffer_ahash(buf, len, hash);  in ima_calc_buffer_hash()
772 	return calc_buffer_shash(buf, len, hash);  in ima_calc_buffer_hash()
785  * The boot_aggregate is a cumulative hash over TPM registers 0 - 7.  With
787  * TPM 2.0 hash agility, TPM chips could support multiple TPM PCR banks,
792  * hash algorithm for reading the TPM PCRs as for calculating the boot
839 int ima_calc_boot_aggregate(struct ima_digest_data *hash)  in ima_calc_boot_aggregate()  argument
847 		if (crypto_id == hash->algo) {  in ima_calc_boot_aggregate()
864 	hash->algo = ima_tpm_chip->allocated_banks[bank_idx].crypto_id;  in ima_calc_boot_aggregate()
866 	tfm = ima_alloc_tfm(hash->algo);  in ima_calc_boot_aggregate()
870 	hash->length = crypto_shash_digestsize(tfm);  in ima_calc_boot_aggregate()
872 	rc = ima_calc_boot_aggregate_tfm(hash->digest, alg_id, tfm);  in ima_calc_boot_aggregate()