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()
330 				   struct ima_digest_data *hash,  in ima_calc_file_hash_atfm()  argument
341 	hash->length = crypto_ahash_digestsize(tfm);  in ima_calc_file_hash_atfm()
432 		ahash_request_set_crypt(req, NULL, hash->digest, 0);  in ima_calc_file_hash_atfm()
440 static int ima_calc_file_ahash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_ahash()  argument
445 	tfm = ima_alloc_atfm(hash->algo);  in ima_calc_file_ahash()
449 	rc = ima_calc_file_hash_atfm(file, hash, tfm);  in ima_calc_file_ahash()
457 				  struct ima_digest_data *hash,  in ima_calc_file_hash_tfm()  argument
467 	hash->length = crypto_shash_digestsize(tfm);  in ima_calc_file_hash_tfm()
503 		rc = crypto_shash_final(shash, hash->digest);  in ima_calc_file_hash_tfm()
507 static int ima_calc_file_shash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_shash()  argument
512 	tfm = ima_alloc_tfm(hash->algo);  in ima_calc_file_shash()
516 	rc = ima_calc_file_hash_tfm(file, hash, tfm);  in ima_calc_file_shash()
524  * ima_calc_file_hash - calculate file hash
526  * Asynchronous hash (ahash) allows using HW acceleration for calculating
527  * a hash. ahash performance varies for different data sizes on different
533  * shash for the hash calculation.  If ahash fails, it falls back to using
536 int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash)  in ima_calc_file_hash()  argument
548 		hash->length = hash_digest_size[ima_hash_algo];  in ima_calc_file_hash()
549 		hash->algo = ima_hash_algo;  in ima_calc_file_hash()
568 		rc = ima_calc_file_ahash(f, hash);  in ima_calc_file_hash()
573 	rc = ima_calc_file_shash(f, hash);  in ima_calc_file_hash()
581  * Calculate the hash of template data
664 				  struct ima_digest_data *hash,  in calc_buffer_ahash_atfm()  argument
672 	hash->length = crypto_ahash_digestsize(tfm);  in calc_buffer_ahash_atfm()
695 		ahash_request_set_crypt(req, NULL, hash->digest, 0);  in calc_buffer_ahash_atfm()
704 			     struct ima_digest_data *hash)  in calc_buffer_ahash()  argument
709 	tfm = ima_alloc_atfm(hash->algo);  in calc_buffer_ahash()
713 	rc = calc_buffer_ahash_atfm(buf, len, hash, tfm);  in calc_buffer_ahash()
721 				struct ima_digest_data *hash,  in calc_buffer_shash_tfm()  argument
730 	hash->length = crypto_shash_digestsize(tfm);  in calc_buffer_shash_tfm()
746 		rc = crypto_shash_final(shash, hash->digest);  in calc_buffer_shash_tfm()
751 			     struct ima_digest_data *hash)  in calc_buffer_shash()  argument
756 	tfm = ima_alloc_tfm(hash->algo);  in calc_buffer_shash()
760 	rc = calc_buffer_shash_tfm(buf, len, hash, tfm);  in calc_buffer_shash()
767 			 struct ima_digest_data *hash)  in ima_calc_buffer_hash()  argument
772 		rc = calc_buffer_ahash(buf, len, hash);  in ima_calc_buffer_hash()
777 	return calc_buffer_shash(buf, len, hash);  in ima_calc_buffer_hash()
790  * The boot_aggregate is a cumulative hash over TPM registers 0 - 7.  With
792  * TPM 2.0 hash agility, TPM chips could support multiple TPM PCR banks,
797  * hash algorithm for reading the TPM PCRs as for calculating the boot
844 int ima_calc_boot_aggregate(struct ima_digest_data *hash)  in ima_calc_boot_aggregate()  argument
852 		if (crypto_id == hash->algo) {  in ima_calc_boot_aggregate()
869 	hash->algo = ima_tpm_chip->allocated_banks[bank_idx].crypto_id;  in ima_calc_boot_aggregate()
871 	tfm = ima_alloc_tfm(hash->algo);  in ima_calc_boot_aggregate()
875 	hash->length = crypto_shash_digestsize(tfm);  in ima_calc_boot_aggregate()
877 	rc = ima_calc_boot_aggregate_tfm(hash->digest, alg_id, tfm);  in ima_calc_boot_aggregate()