Lines Matching refs:s
623 struct ecryptfs_write_tag_70_packet_silly_stack *s; in ecryptfs_write_tag_70_packet() local
627 s = kzalloc(sizeof(*s), GFP_KERNEL); in ecryptfs_write_tag_70_packet()
628 if (!s) in ecryptfs_write_tag_70_packet()
634 &s->auth_tok, mount_crypt_stat, in ecryptfs_write_tag_70_packet()
643 &s->skcipher_tfm, in ecryptfs_write_tag_70_packet()
644 &s->tfm_mutex, mount_crypt_stat->global_default_fn_cipher_name); in ecryptfs_write_tag_70_packet()
651 mutex_lock(s->tfm_mutex); in ecryptfs_write_tag_70_packet()
652 s->block_size = crypto_skcipher_blocksize(s->skcipher_tfm); in ecryptfs_write_tag_70_packet()
655 s->num_rand_bytes = (ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES + 1); in ecryptfs_write_tag_70_packet()
656 s->block_aligned_filename_size = (s->num_rand_bytes + filename_size); in ecryptfs_write_tag_70_packet()
657 if ((s->block_aligned_filename_size % s->block_size) != 0) { in ecryptfs_write_tag_70_packet()
658 s->num_rand_bytes += (s->block_size in ecryptfs_write_tag_70_packet()
659 - (s->block_aligned_filename_size in ecryptfs_write_tag_70_packet()
660 % s->block_size)); in ecryptfs_write_tag_70_packet()
661 s->block_aligned_filename_size = (s->num_rand_bytes in ecryptfs_write_tag_70_packet()
672 s->max_packet_size = (ECRYPTFS_TAG_70_MAX_METADATA_SIZE in ecryptfs_write_tag_70_packet()
673 + s->block_aligned_filename_size); in ecryptfs_write_tag_70_packet()
675 (*packet_size) = s->max_packet_size; in ecryptfs_write_tag_70_packet()
678 if (s->max_packet_size > (*remaining_bytes)) { in ecryptfs_write_tag_70_packet()
680 "[%zd] available\n", __func__, s->max_packet_size, in ecryptfs_write_tag_70_packet()
686 s->skcipher_req = skcipher_request_alloc(s->skcipher_tfm, GFP_KERNEL); in ecryptfs_write_tag_70_packet()
687 if (!s->skcipher_req) { in ecryptfs_write_tag_70_packet()
690 crypto_skcipher_driver_name(s->skcipher_tfm)); in ecryptfs_write_tag_70_packet()
695 skcipher_request_set_callback(s->skcipher_req, in ecryptfs_write_tag_70_packet()
698 s->block_aligned_filename = kzalloc(s->block_aligned_filename_size, in ecryptfs_write_tag_70_packet()
700 if (!s->block_aligned_filename) { in ecryptfs_write_tag_70_packet()
704 dest[s->i++] = ECRYPTFS_TAG_70_PACKET_TYPE; in ecryptfs_write_tag_70_packet()
705 rc = ecryptfs_write_packet_length(&dest[s->i], in ecryptfs_write_tag_70_packet()
708 + s->block_aligned_filename_size), in ecryptfs_write_tag_70_packet()
709 &s->packet_size_len); in ecryptfs_write_tag_70_packet()
716 s->i += s->packet_size_len; in ecryptfs_write_tag_70_packet()
717 ecryptfs_from_hex(&dest[s->i], in ecryptfs_write_tag_70_packet()
720 s->i += ECRYPTFS_SIG_SIZE; in ecryptfs_write_tag_70_packet()
721 s->cipher_code = ecryptfs_code_for_cipher_string( in ecryptfs_write_tag_70_packet()
724 if (s->cipher_code == 0) { in ecryptfs_write_tag_70_packet()
732 dest[s->i++] = s->cipher_code; in ecryptfs_write_tag_70_packet()
735 if (s->auth_tok->token_type != ECRYPTFS_PASSWORD) { in ecryptfs_write_tag_70_packet()
741 s->hash_tfm = crypto_alloc_shash(ECRYPTFS_TAG_70_DIGEST, 0, 0); in ecryptfs_write_tag_70_packet()
742 if (IS_ERR(s->hash_tfm)) { in ecryptfs_write_tag_70_packet()
743 rc = PTR_ERR(s->hash_tfm); in ecryptfs_write_tag_70_packet()
750 s->hash_desc = kmalloc(sizeof(*s->hash_desc) + in ecryptfs_write_tag_70_packet()
751 crypto_shash_descsize(s->hash_tfm), GFP_KERNEL); in ecryptfs_write_tag_70_packet()
752 if (!s->hash_desc) { in ecryptfs_write_tag_70_packet()
757 s->hash_desc->tfm = s->hash_tfm; in ecryptfs_write_tag_70_packet()
759 rc = crypto_shash_digest(s->hash_desc, in ecryptfs_write_tag_70_packet()
760 (u8 *)s->auth_tok->token.password.session_key_encryption_key, in ecryptfs_write_tag_70_packet()
761 s->auth_tok->token.password.session_key_encryption_key_bytes, in ecryptfs_write_tag_70_packet()
762 s->hash); in ecryptfs_write_tag_70_packet()
769 for (s->j = 0; s->j < (s->num_rand_bytes - 1); s->j++) { in ecryptfs_write_tag_70_packet()
770 s->block_aligned_filename[s->j] = in ecryptfs_write_tag_70_packet()
771 s->hash[(s->j % ECRYPTFS_TAG_70_DIGEST_SIZE)]; in ecryptfs_write_tag_70_packet()
772 if ((s->j % ECRYPTFS_TAG_70_DIGEST_SIZE) in ecryptfs_write_tag_70_packet()
774 rc = crypto_shash_digest(s->hash_desc, (u8 *)s->hash, in ecryptfs_write_tag_70_packet()
776 s->tmp_hash); in ecryptfs_write_tag_70_packet()
783 memcpy(s->hash, s->tmp_hash, in ecryptfs_write_tag_70_packet()
786 if (s->block_aligned_filename[s->j] == '\0') in ecryptfs_write_tag_70_packet()
787 s->block_aligned_filename[s->j] = ECRYPTFS_NON_NULL; in ecryptfs_write_tag_70_packet()
789 memcpy(&s->block_aligned_filename[s->num_rand_bytes], filename, in ecryptfs_write_tag_70_packet()
791 rc = virt_to_scatterlist(s->block_aligned_filename, in ecryptfs_write_tag_70_packet()
792 s->block_aligned_filename_size, s->src_sg, 2); in ecryptfs_write_tag_70_packet()
797 s->block_aligned_filename_size); in ecryptfs_write_tag_70_packet()
800 rc = virt_to_scatterlist(&dest[s->i], s->block_aligned_filename_size, in ecryptfs_write_tag_70_packet()
801 s->dst_sg, 2); in ecryptfs_write_tag_70_packet()
806 __func__, rc, s->block_aligned_filename_size); in ecryptfs_write_tag_70_packet()
814 s->skcipher_tfm, in ecryptfs_write_tag_70_packet()
815 s->auth_tok->token.password.session_key_encryption_key, in ecryptfs_write_tag_70_packet()
823 s->auth_tok->token.password.session_key_encryption_key, in ecryptfs_write_tag_70_packet()
827 skcipher_request_set_crypt(s->skcipher_req, s->src_sg, s->dst_sg, in ecryptfs_write_tag_70_packet()
828 s->block_aligned_filename_size, s->iv); in ecryptfs_write_tag_70_packet()
829 rc = crypto_skcipher_encrypt(s->skcipher_req); in ecryptfs_write_tag_70_packet()
835 s->i += s->block_aligned_filename_size; in ecryptfs_write_tag_70_packet()
836 (*packet_size) = s->i; in ecryptfs_write_tag_70_packet()
839 crypto_free_shash(s->hash_tfm); in ecryptfs_write_tag_70_packet()
841 kzfree(s->block_aligned_filename); in ecryptfs_write_tag_70_packet()
843 mutex_unlock(s->tfm_mutex); in ecryptfs_write_tag_70_packet()
849 skcipher_request_free(s->skcipher_req); in ecryptfs_write_tag_70_packet()
850 kzfree(s->hash_desc); in ecryptfs_write_tag_70_packet()
851 kfree(s); in ecryptfs_write_tag_70_packet()
896 struct ecryptfs_parse_tag_70_packet_silly_stack *s; in ecryptfs_parse_tag_70_packet() local
903 s = kzalloc(sizeof(*s), GFP_KERNEL); in ecryptfs_parse_tag_70_packet()
904 if (!s) in ecryptfs_parse_tag_70_packet()
930 &s->parsed_tag_70_packet_size, in ecryptfs_parse_tag_70_packet()
931 &s->packet_size_len); in ecryptfs_parse_tag_70_packet()
937 s->block_aligned_filename_size = (s->parsed_tag_70_packet_size in ecryptfs_parse_tag_70_packet()
939 if ((1 + s->packet_size_len + s->parsed_tag_70_packet_size) in ecryptfs_parse_tag_70_packet()
943 (1 + s->packet_size_len + 1 in ecryptfs_parse_tag_70_packet()
944 + s->block_aligned_filename_size)); in ecryptfs_parse_tag_70_packet()
948 (*packet_size) += s->packet_size_len; in ecryptfs_parse_tag_70_packet()
949 ecryptfs_to_hex(s->fnek_sig_hex, &data[(*packet_size)], in ecryptfs_parse_tag_70_packet()
951 s->fnek_sig_hex[ECRYPTFS_SIG_SIZE_HEX] = '\0'; in ecryptfs_parse_tag_70_packet()
953 s->cipher_code = data[(*packet_size)++]; in ecryptfs_parse_tag_70_packet()
954 rc = ecryptfs_cipher_code_to_string(s->cipher_string, s->cipher_code); in ecryptfs_parse_tag_70_packet()
957 __func__, s->cipher_code); in ecryptfs_parse_tag_70_packet()
961 &s->auth_tok, mount_crypt_stat, in ecryptfs_parse_tag_70_packet()
962 s->fnek_sig_hex); in ecryptfs_parse_tag_70_packet()
965 "fnek sig [%s]; rc = [%d]\n", __func__, s->fnek_sig_hex, in ecryptfs_parse_tag_70_packet()
969 rc = ecryptfs_get_tfm_and_mutex_for_cipher_name(&s->skcipher_tfm, in ecryptfs_parse_tag_70_packet()
970 &s->tfm_mutex, in ecryptfs_parse_tag_70_packet()
971 s->cipher_string); in ecryptfs_parse_tag_70_packet()
975 s->cipher_string, rc); in ecryptfs_parse_tag_70_packet()
978 mutex_lock(s->tfm_mutex); in ecryptfs_parse_tag_70_packet()
980 s->block_aligned_filename_size, s->src_sg, 2); in ecryptfs_parse_tag_70_packet()
985 __func__, rc, s->block_aligned_filename_size); in ecryptfs_parse_tag_70_packet()
988 (*packet_size) += s->block_aligned_filename_size; in ecryptfs_parse_tag_70_packet()
989 s->decrypted_filename = kmalloc(s->block_aligned_filename_size, in ecryptfs_parse_tag_70_packet()
991 if (!s->decrypted_filename) { in ecryptfs_parse_tag_70_packet()
995 rc = virt_to_scatterlist(s->decrypted_filename, in ecryptfs_parse_tag_70_packet()
996 s->block_aligned_filename_size, s->dst_sg, 2); in ecryptfs_parse_tag_70_packet()
1001 __func__, rc, s->block_aligned_filename_size); in ecryptfs_parse_tag_70_packet()
1005 s->skcipher_req = skcipher_request_alloc(s->skcipher_tfm, GFP_KERNEL); in ecryptfs_parse_tag_70_packet()
1006 if (!s->skcipher_req) { in ecryptfs_parse_tag_70_packet()
1009 crypto_skcipher_driver_name(s->skcipher_tfm)); in ecryptfs_parse_tag_70_packet()
1014 skcipher_request_set_callback(s->skcipher_req, in ecryptfs_parse_tag_70_packet()
1023 if (s->auth_tok->token_type != ECRYPTFS_PASSWORD) { in ecryptfs_parse_tag_70_packet()
1030 s->skcipher_tfm, in ecryptfs_parse_tag_70_packet()
1031 s->auth_tok->token.password.session_key_encryption_key, in ecryptfs_parse_tag_70_packet()
1039 s->auth_tok->token.password.session_key_encryption_key, in ecryptfs_parse_tag_70_packet()
1043 skcipher_request_set_crypt(s->skcipher_req, s->src_sg, s->dst_sg, in ecryptfs_parse_tag_70_packet()
1044 s->block_aligned_filename_size, s->iv); in ecryptfs_parse_tag_70_packet()
1045 rc = crypto_skcipher_decrypt(s->skcipher_req); in ecryptfs_parse_tag_70_packet()
1052 while (s->i < s->block_aligned_filename_size && in ecryptfs_parse_tag_70_packet()
1053 s->decrypted_filename[s->i] != '\0') in ecryptfs_parse_tag_70_packet()
1054 s->i++; in ecryptfs_parse_tag_70_packet()
1055 if (s->i == s->block_aligned_filename_size) { in ecryptfs_parse_tag_70_packet()
1062 s->i++; in ecryptfs_parse_tag_70_packet()
1063 (*filename_size) = (s->block_aligned_filename_size - s->i); in ecryptfs_parse_tag_70_packet()
1075 memcpy((*filename), &s->decrypted_filename[s->i], (*filename_size)); in ecryptfs_parse_tag_70_packet()
1078 kfree(s->decrypted_filename); in ecryptfs_parse_tag_70_packet()
1080 mutex_unlock(s->tfm_mutex); in ecryptfs_parse_tag_70_packet()
1091 skcipher_request_free(s->skcipher_req); in ecryptfs_parse_tag_70_packet()
1092 kfree(s); in ecryptfs_parse_tag_70_packet()