integrity/ima/ima_crypto.c

61 	struct crypto_shash *tfm;
93 	struct crypto_shash *tfm = ima_shash_tfm;
100 		return tfm;
103 		if (ima_algo_array[i].tfm && ima_algo_array[i].algo == algo)
104 			return ima_algo_array[i].tfm;
106 	tfm = crypto_alloc_shash(hash_algo_name[algo], 0, 0);
107 	if (IS_ERR(tfm)) {
108 		rc = PTR_ERR(tfm);
112 	return tfm;
162 			ima_algo_array[i].tfm = ima_shash_tfm;
166 		ima_algo_array[i].tfm = ima_alloc_tfm(algo);
167 		if (IS_ERR(ima_algo_array[i].tfm)) {
169 				rc = PTR_ERR(ima_algo_array[i].tfm);
170 				ima_algo_array[i].tfm = NULL;
174 			ima_algo_array[i].tfm = NULL;
180 			ima_algo_array[ima_sha1_idx].tfm = ima_shash_tfm;
182 			ima_algo_array[ima_sha1_idx].tfm =
184 			if (IS_ERR(ima_algo_array[ima_sha1_idx].tfm)) {
185 				rc = PTR_ERR(ima_algo_array[ima_sha1_idx].tfm);
195 		ima_algo_array[ima_hash_algo_idx].tfm = ima_shash_tfm;
202 		if (!ima_algo_array[i].tfm ||
203 		    ima_algo_array[i].tfm == ima_shash_tfm)
206 		crypto_free_shash(ima_algo_array[i].tfm);
214 static void ima_free_tfm(struct crypto_shash *tfm)
218 	if (tfm == ima_shash_tfm)
222 		if (ima_algo_array[i].tfm == tfm)
225 	crypto_free_shash(tfm);
292 	struct crypto_ahash *tfm = ima_ahash_tfm;
298 	if (algo != ima_hash_algo || !tfm) {
299 		tfm = crypto_alloc_ahash(hash_algo_name[algo], 0, 0);
300 		if (!IS_ERR(tfm)) {
302 				ima_ahash_tfm = tfm;
304 			rc = PTR_ERR(tfm);
309 	return tfm;
312 static void ima_free_atfm(struct crypto_ahash *tfm)
314 	if (tfm != ima_ahash_tfm)
315 		crypto_free_ahash(tfm);
331 				   struct crypto_ahash *tfm)
341 	hash->length = crypto_ahash_digestsize(tfm);
343 	req = ahash_request_alloc(tfm, GFP_KERNEL);
442 	struct crypto_ahash *tfm;
445 	tfm = ima_alloc_atfm(hash->algo);
446 	if (IS_ERR(tfm))
447 		return PTR_ERR(tfm);
449 	rc = ima_calc_file_hash_atfm(file, hash, tfm);
451 	ima_free_atfm(tfm);
458 				  struct crypto_shash *tfm)
463 	SHASH_DESC_ON_STACK(shash, tfm);
465 	shash->tfm = tfm;
467 	hash->length = crypto_shash_digestsize(tfm);
509 	struct crypto_shash *tfm;
512 	tfm = ima_alloc_tfm(hash->algo);
513 	if (IS_ERR(tfm))
514 		return PTR_ERR(tfm);
516 	rc = ima_calc_file_hash_tfm(file, hash, tfm);
518 	ima_free_tfm(tfm);
587 	SHASH_DESC_ON_STACK(shash, ima_algo_array[tfm_idx].tfm);
592 	shash->tfm = ima_algo_array[tfm_idx].tfm;
649 		if (!ima_algo_array[i].tfm) {
665 				  struct crypto_ahash *tfm)
672 	hash->length = crypto_ahash_digestsize(tfm);
674 	req = ahash_request_alloc(tfm, GFP_KERNEL);
706 	struct crypto_ahash *tfm;
709 	tfm = ima_alloc_atfm(hash->algo);
710 	if (IS_ERR(tfm))
711 		return PTR_ERR(tfm);
713 	rc = calc_buffer_ahash_atfm(buf, len, hash, tfm);
715 	ima_free_atfm(tfm);
722 				struct crypto_shash *tfm)
724 	SHASH_DESC_ON_STACK(shash, tfm);
728 	shash->tfm = tfm;
730 	hash->length = crypto_shash_digestsize(tfm);
753 	struct crypto_shash *tfm;
756 	tfm = ima_alloc_tfm(hash->algo);
757 	if (IS_ERR(tfm))
758 		return PTR_ERR(tfm);
760 	rc = calc_buffer_shash_tfm(buf, len, hash, tfm);
762 	ima_free_tfm(tfm);
801 				       struct crypto_shash *tfm)
806 	SHASH_DESC_ON_STACK(shash, tfm);
808 	shash->tfm = tfm;
822 					 crypto_shash_digestsize(tfm));
836 						crypto_shash_digestsize(tfm));
846 	struct crypto_shash *tfm;
871 	tfm = ima_alloc_tfm(hash->algo);
872 	if (IS_ERR(tfm))
873 		return PTR_ERR(tfm);
875 	hash->length = crypto_shash_digestsize(tfm);
877 	rc = ima_calc_boot_aggregate_tfm(hash->digest, alg_id, tfm);
879 	ima_free_tfm(tfm);