| 50 | } |
| 51 | |
| 52 | void Key_file::Entry::load (std::istream& in) |
| 53 | { |
| 54 | while (true) { |
| 55 | uint32_t field_id; |
| 56 | if (!read_be32(in, field_id)) { |
| 57 | throw Malformed(); |
| 58 | } |
| 59 | if (field_id == KEY_FIELD_END) { |
| 60 | break; |
| 61 | } |
| 62 | uint32_t field_len; |
| 63 | if (!read_be32(in, field_len)) { |
| 64 | throw Malformed(); |
| 65 | } |
| 66 | |
| 67 | if (field_id == KEY_FIELD_VERSION) { |
| 68 | if (field_len != 4) { |
| 69 | throw Malformed(); |
| 70 | } |
| 71 | if (!read_be32(in, version)) { |
| 72 | throw Malformed(); |
| 73 | } |
| 74 | } else if (field_id == KEY_FIELD_AES_KEY) { |
| 75 | if (field_len != AES_KEY_LEN) { |
| 76 | throw Malformed(); |
| 77 | } |
| 78 | in.read(reinterpret_cast<char*>(aes_key), AES_KEY_LEN); |
| 79 | if (in.gcount() != AES_KEY_LEN) { |
| 80 | throw Malformed(); |
| 81 | } |
| 82 | } else if (field_id == KEY_FIELD_HMAC_KEY) { |
| 83 | if (field_len != HMAC_KEY_LEN) { |
| 84 | throw Malformed(); |
| 85 | } |
| 86 | in.read(reinterpret_cast<char*>(hmac_key), HMAC_KEY_LEN); |
| 87 | if (in.gcount() != HMAC_KEY_LEN) { |
| 88 | throw Malformed(); |
| 89 | } |
| 90 | } else if (field_id & 1) { // unknown critical field |
| 91 | throw Incompatible(); |
| 92 | } else { |
| 93 | // unknown non-critical field - safe to ignore |
| 94 | if (field_len > MAX_FIELD_LEN) { |
| 95 | throw Malformed(); |
| 96 | } |
| 97 | in.ignore(field_len); |
| 98 | if (in.gcount() != static_cast<std::streamsize>(field_len)) { |
| 99 | throw Malformed(); |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | void Key_file::Entry::load_legacy (uint32_t arg_version, std::istream& in) |
| 106 | { |
no test coverage detected