10  *	Calculates md5/sha1 file hash, template hash, boot-aggreate hash
21 #include <crypto/hash.h>
86 	pr_info("Allocated hash algorithm: %s\n",  in ima_init_ima_crypto()
329 				   struct ima_digest_data *hash,  in ima_calc_file_hash_atfm()  argument
340 	hash->length = crypto_ahash_digestsize(tfm);  in ima_calc_file_hash_atfm()
431 		ahash_request_set_crypt(req, NULL, hash->digest, 0);  in ima_calc_file_hash_atfm()
439 static int ima_calc_file_ahash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_ahash()  argument
444 	tfm = ima_alloc_atfm(hash->algo);  in ima_calc_file_ahash()
448 	rc = ima_calc_file_hash_atfm(file, hash, tfm);  in ima_calc_file_ahash()
456 				  struct ima_digest_data *hash,  in ima_calc_file_hash_tfm()  argument
466 	hash->length = crypto_shash_digestsize(tfm);  in ima_calc_file_hash_tfm()
502 		rc = crypto_shash_final(shash, hash->digest);  in ima_calc_file_hash_tfm()
506 static int ima_calc_file_shash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_shash()  argument
511 	tfm = ima_alloc_tfm(hash->algo);  in ima_calc_file_shash()
515 	rc = ima_calc_file_hash_tfm(file, hash, tfm);  in ima_calc_file_shash()
523  * ima_calc_file_hash - calculate file hash
525  * Asynchronous hash (ahash) allows using HW acceleration for calculating
526  * a hash. ahash performance varies for different data sizes on different
532  * shash for the hash calculation.  If ahash fails, it falls back to using
535 int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_hash()  argument
547 		hash->length = hash_digest_size[ima_hash_algo];  in ima_calc_file_hash()
548 		hash->algo = ima_hash_algo;  in ima_calc_file_hash()
575 		rc = ima_calc_file_ahash(f, hash);  in ima_calc_file_hash()
580 	rc = ima_calc_file_shash(f, hash);  in ima_calc_file_hash()
590  * Calculate the hash of template data
673 				  struct ima_digest_data *hash,  in calc_buffer_ahash_atfm()  argument
681 	hash->length = crypto_ahash_digestsize(tfm);  in calc_buffer_ahash_atfm()
704 		ahash_request_set_crypt(req, NULL, hash->digest, 0);  in calc_buffer_ahash_atfm()
713 			     struct ima_digest_data *hash)  in calc_buffer_ahash()  argument
718 	tfm = ima_alloc_atfm(hash->algo);  in calc_buffer_ahash()
722 	rc = calc_buffer_ahash_atfm(buf, len, hash, tfm);  in calc_buffer_ahash()
730 				struct ima_digest_data *hash,  in calc_buffer_shash_tfm()  argument
739 	hash->length = crypto_shash_digestsize(tfm);  in calc_buffer_shash_tfm()
755 		rc = crypto_shash_final(shash, hash->digest);  in calc_buffer_shash_tfm()
760 			     struct ima_digest_data *hash)  in calc_buffer_shash()  argument
765 	tfm = ima_alloc_tfm(hash->algo);  in calc_buffer_shash()
769 	rc = calc_buffer_shash_tfm(buf, len, hash, tfm);  in calc_buffer_shash()
776 			 struct ima_digest_data *hash)  in ima_calc_buffer_hash()  argument
781 		rc = calc_buffer_ahash(buf, len, hash);  in ima_calc_buffer_hash()
786 	return calc_buffer_shash(buf, len, hash);  in ima_calc_buffer_hash()
799  * The boot_aggregate is a cumulative hash over TPM registers 0 - 7.  With
801  * TPM 2.0 hash agility, TPM chips could support multiple TPM PCR banks,
806  * hash algorithm for reading the TPM PCRs as for calculating the boot
853 int ima_calc_boot_aggregate(struct ima_digest_data *hash)  in ima_calc_boot_aggregate()  argument
861 		if (crypto_id == hash->algo) {  in ima_calc_boot_aggregate()
878 	hash->algo = ima_tpm_chip->allocated_banks[bank_idx].crypto_id;  in ima_calc_boot_aggregate()
880 	tfm = ima_alloc_tfm(hash->algo);  in ima_calc_boot_aggregate()
884 	hash->length = crypto_shash_digestsize(tfm);  in ima_calc_boot_aggregate()
886 	rc = ima_calc_boot_aggregate_tfm(hash->digest, alg_id, tfm);  in ima_calc_boot_aggregate()