[QUESTION] AZW only available in new DRM format please help

CheckList

[x] The Title and The Log Title are setted correctly.
[x] Clarified about my environment.
[x] Code block is used for the log.

AZW only available in new DRM format please help

The ebook is only available in the new DRM format and has an additional limit: Simultaneous device usage ‏ : ‎ Up to 2 simultaneous devices, per publisher limits. I wonder if that kind of ebook I just bought qualifies as rented with such a limit and if I can and should persue further decryption attempts.

Trying to use any earlier version of Kindle for PC fails, as the DRM or KFX version appears to require a newer version.

Please advise.

My Environment

Calibre: `5.25`

Kindle: `1.32.0`

DeDRM: `7.2.1`

Log

Calibre and DeDRM log output, stating: Incorrect padding - wrong key with Calibre and DeDRM; unable to decrypt with the KFX DRM voucher.

```log Convert book 1 of 1 (Options, Futures, and Other Derivatives (2-downloads)) DeDRM v7.2.1: Trying to decrypt 6x6k3cdq.kfx-zip Using Library AlfCrypto DLL/DYLIB/SO Using Library AlfCrypto DLL/DYLIB/SO Decrypting KFX-ZIP ebook: 6x6k3cdq Found 0 keys to try after 0.0 seconds Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.108d8fbf-67c3-4b6f-9b69-fe89c70b8475.voucher Traceback (most recent call last): File "calibre_plugins.dedrm.kfxdedrm", line 83, in decrypt_voucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 879, in decryptvoucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 758, in pkcs7unpad File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 98, in _assert Exception: Incorrect padding - Wrong key DeDRM v7.2.1: Failed to decrypt with error: Failed to decrypt KFX DRM voucher with any key DeDRM v7.2.1: Looking for new default Kindle Key after 0.1 seconds searching for kinfoFiles in C:\Users\deucalion\AppData\Local Found K4PC 1.25+ kinf2018 file: C:\Users\deucalion\AppData\Local\Amazon\Kindle\storage\.kinf2018 Decrypted key file using IDString '613380195' and UserName 'deucalion' DeDRM v7.2.1: Found 1 new key Decrypting KFX-ZIP ebook: 6x6k3cdq Got DSN key from database default_key_1 Found 1 keys to try after 2.2 seconds Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.108d8fbf-67c3-4b6f-9b69-fe89c70b8475.voucher Traceback (most recent call last): File "calibre_plugins.dedrm.__init__", line 540, in KindleMobiDecrypt File "calibre_plugins.dedrm.k4mobidedrm", line 238, in GetDecryptedBook File "calibre_plugins.dedrm.kfxdedrm", line 45, in processBook File "calibre_plugins.dedrm.kfxdedrm", line 89, in decrypt_voucher Exception: Failed to decrypt KFX DRM voucher with any key During handling of the above exception, another exception occurred: Traceback (most recent call last): File "calibre_plugins.dedrm.kfxdedrm", line 83, in decrypt_voucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 879, in decryptvoucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 758, in pkcs7unpad File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 98, in _assert Exception: Incorrect padding - Wrong key Traceback (most recent call last): File "calibre_plugins.dedrm.__init__", line 540, in KindleMobiDecrypt File "calibre_plugins.dedrm.k4mobidedrm", line 238, in GetDecryptedBook File "calibre_plugins.dedrm.kfxdedrm", line 45, in processBook File "calibre_plugins.dedrm.kfxdedrm", line 89, in decrypt_voucher Exception: Failed to decrypt KFX DRM voucher with any key During handling of the above exception, another exception occurred: Traceback (most recent call last): File "calibre_plugins.dedrm.kfxdedrm", line 83, in decrypt_voucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 879, in decryptvoucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 758, in pkcs7unpad File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 98, in _assert Exception: Incorrect padding - Wrong key DeDRM v7.2.1: Ultimately failed to decrypt after 2.2 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md Conversion options changed from defaults: flow_size: 0 output_profile: 'kindle_voyage' cover: 'C:\\Users\\deucalion\\AppData\\Local\\Temp\\calibre_e6uxvs8i\\g5473ibd.jpeg' verbose: 2 read_metadata_from_opf: 'C:\\Users\\deucalion\\AppData\\Local\\Temp\\calibre_e6uxvs8i\\eynkqyt6.opf' Resolved conversion options calibre version: 5.25.0 {'allow_conversion_with_errors': False, 'asciiize': False, 'author_sort': None, 'authors': None, 'base_font_size': 0.0, 'book_producer': None, 'change_justification': 'original', 'chapter': "//*[((name()='h1' or name()='h2') and re:test(., " "'\\s*((chapter|book|section|part)\\s+)|((prolog|prologue|epilogue)(\\s+|$))', " "'i')) or @class = 'chapter']", 'chapter_mark': 'pagebreak', 'comments': None, 'cover': 'C:\\Users\\deucalion\\AppData\\Local\\Temp\\calibre_e6uxvs8i\\g5473ibd.jpeg', 'debug_pipeline': None, 'dehyphenate': True, 'delete_blank_paragraphs': True, 'disable_font_rescaling': False, 'dont_split_on_page_breaks': False, 'duplicate_links_in_toc': False, 'embed_all_fonts': False, 'embed_font_family': None, 'enable_heuristics': False, 'epub_flatten': False, 'epub_inline_toc': False, 'epub_toc_at_end': False, 'epub_version': '2', 'expand_css': False, 'extra_css': None, 'extract_to': None, 'filter_css': '', 'fix_indents': True, 'flow_size': 0, 'font_size_mapping': None, 'format_scene_breaks': True, 'html_unwrap_factor': 0.4, 'input_encoding': None, 'input_profile': , 'insert_blank_line': False, 'insert_blank_line_size': 0.5, 'insert_metadata': False, 'isbn': None, 'italicize_common_cases': True, 'keep_ligatures': False, 'language': None, 'level1_toc': None, 'level2_toc': None, 'level3_toc': None, 'line_height': 0.0, 'linearize_tables': False, 'margin_bottom': 5.0, 'margin_left': 5.0, 'margin_right': 5.0, 'margin_top': 5.0, 'markup_chapter_headings': True, 'max_toc_links': 50, 'minimum_line_height': 120.0, 'no_chapters_in_toc': False, 'no_default_epub_cover': False, 'no_inline_navbars': False, 'no_svg_cover': False, 'output_profile': , 'page_breaks_before': '/', 'prefer_metadata_cover': False, 'preserve_cover_aspect_ratio': False, 'pretty_print': True, 'pubdate': None, 'publisher': None, 'rating': None, 'read_metadata_from_opf': 'C:\\Users\\deucalion\\AppData\\Local\\Temp\\calibre_e6uxvs8i\\eynkqyt6.opf', 'remove_fake_margins': True, 'remove_first_image': False, 'remove_paragraph_spacing': False, 'remove_paragraph_spacing_indent_size': 1.5, 'renumber_headings': True, 'replace_scene_breaks': '', 'search_replace': '[]', 'series': None, 'series_index': None, 'smarten_punctuation': False, 'sr1_replace': None, 'sr1_search': None, 'sr2_replace': None, 'sr2_search': None, 'sr3_replace': None, 'sr3_search': None, 'start_reading_at': None, 'subset_embedded_fonts': False, 'tags': None, 'timestamp': None, 'title': None, 'title_sort': None, 'toc_filter': None, 'toc_threshold': 6, 'toc_title': None, 'transform_css_rules': '[]', 'unsmarten_punctuation': False, 'unwrap_lines': True, 'use_auto_toc': False, 'verbose': 2} Running file type plugin DeDRM failed with traceback: Traceback (most recent call last): File "calibre_plugins.dedrm.__init__", line 540, in KindleMobiDecrypt File "calibre_plugins.dedrm.k4mobidedrm", line 238, in GetDecryptedBook File "calibre_plugins.dedrm.kfxdedrm", line 45, in processBook File "calibre_plugins.dedrm.kfxdedrm", line 89, in decrypt_voucher Exception: Failed to decrypt KFX DRM voucher with any key During handling of the above exception, another exception occurred: Traceback (most recent call last): File "calibre\customize\ui.py", line 176, in _run_filetype_plugins File "calibre_plugins.dedrm.__init__", line 633, in run File "calibre_plugins.dedrm.__init__", line 583, in KindleMobiDecrypt calibre_plugins.dedrm.DeDRMError: DeDRM v7.2.1: Ultimately failed to decrypt after 2.2 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md DeDRM v7.2.1: Trying to decrypt 6x6k3cdq.kfx-zip Decrypting KFX-ZIP ebook: 6x6k3cdq Found 0 keys to try after 0.0 seconds Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.108d8fbf-67c3-4b6f-9b69-fe89c70b8475.voucher Traceback (most recent call last): File "calibre_plugins.dedrm.kfxdedrm", line 83, in decrypt_voucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 879, in decryptvoucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 758, in pkcs7unpad File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 98, in _assert Exception: Incorrect padding - Wrong key DeDRM v7.2.1: Failed to decrypt with error: Failed to decrypt KFX DRM voucher with any key DeDRM v7.2.1: Looking for new default Kindle Key after 0.0 seconds searching for kinfoFiles in C:\Users\deucalion\AppData\Local Found K4PC 1.25+ kinf2018 file: C:\Users\deucalion\AppData\Local\Amazon\Kindle\storage\.kinf2018 Decrypted key file using IDString '613380195' and UserName 'deucalion' DeDRM v7.2.1: Found 1 new key Decrypting KFX-ZIP ebook: 6x6k3cdq Got DSN key from database default_key_1 Found 1 keys to try after 2.1 seconds Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.108d8fbf-67c3-4b6f-9b69-fe89c70b8475.voucher Traceback (most recent call last): File "calibre_plugins.dedrm.__init__", line 540, in KindleMobiDecrypt File "calibre_plugins.dedrm.k4mobidedrm", line 238, in GetDecryptedBook File "calibre_plugins.dedrm.kfxdedrm", line 45, in processBook File "calibre_plugins.dedrm.kfxdedrm", line 89, in decrypt_voucher Exception: Failed to decrypt KFX DRM voucher with any key During handling of the above exception, another exception occurred: Traceback (most recent call last): File "calibre_plugins.dedrm.kfxdedrm", line 83, in decrypt_voucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 879, in decryptvoucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 758, in pkcs7unpad File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 98, in _assert Exception: Incorrect padding - Wrong key Traceback (most recent call last): File "calibre_plugins.dedrm.__init__", line 540, in KindleMobiDecrypt File "calibre_plugins.dedrm.k4mobidedrm", line 238, in GetDecryptedBook File "calibre_plugins.dedrm.kfxdedrm", line 45, in processBook File "calibre_plugins.dedrm.kfxdedrm", line 89, in decrypt_voucher Exception: Failed to decrypt KFX DRM voucher with any key During handling of the above exception, another exception occurred: Traceback (most recent call last): File "calibre_plugins.dedrm.kfxdedrm", line 83, in decrypt_voucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 879, in decryptvoucher File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 758, in pkcs7unpad File "C:\Users\deucalion\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 98, in _assert Exception: Incorrect padding - Wrong key DeDRM v7.2.1: Ultimately failed to decrypt after 2.1 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md Running file type plugin DeDRM failed with traceback: Traceback (most recent call last): File "calibre_plugins.dedrm.__init__", line 540, in KindleMobiDecrypt File "calibre_plugins.dedrm.k4mobidedrm", line 238, in GetDecryptedBook File "calibre_plugins.dedrm.kfxdedrm", line 45, in processBook File "calibre_plugins.dedrm.kfxdedrm", line 89, in decrypt_voucher Exception: Failed to decrypt KFX DRM voucher with any key During handling of the above exception, another exception occurred: Traceback (most recent call last): File "calibre\customize\ui.py", line 176, in _run_filetype_plugins File "calibre_plugins.dedrm.__init__", line 633, in run File "calibre_plugins.dedrm.__init__", line 583, in KindleMobiDecrypt calibre_plugins.dedrm.DeDRMError: DeDRM v7.2.1: Ultimately failed to decrypt after 2.1 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md InputFormatPlugin: KFX Input running on C:\Users\deucalion\AppData\Local\Temp\calibre_e6uxvs8i\6x6k3cdq.kfx-zip Software versions: KFX Input 1.41.0, calibre 5.25 [64bit], Windows-10-10.0.19041 KFX Input plugin help is available at https://www.mobileread.com/forums/showthread.php?t=291290 Converting C:\Users\deucalion\AppData\Local\Temp\calibre_e6uxvs8i\6x6k3cdq.kfx-zip Processing container: B08XDGLF44_EBOK.azw Traceback (most recent call last): File "calibre_plugins.kfx_input.__init__", line 105, in convert File "calibre_plugins.kfx_input.kfxlib.yj_book", line 211, in decode_book File "calibre_plugins.kfx_input.kfxlib.yj_book", line 318, in get_container calibre_plugins.kfx_input.kfxlib.utilities.KFXDRMError: Book container B08XDGLF44_EBOK.azw has DRM and cannot be converted During handling of the above exception, another exception occurred: Traceback (most recent call last): File "runpy.py", line 194, in _run_module_as_main File "runpy.py", line 87, in _run_code File "site.py", line 82, in File "site.py", line 77, in main File "site.py", line 49, in run_entry_point File "calibre\utils\ipc\worker.py", line 216, in main File "calibre\gui2\convert\gui_conversion.py", line 41, in gui_convert_override File "calibre\gui2\convert\gui_conversion.py", line 28, in gui_convert File "calibre\ebooks\conversion\plumber.py", line 1105, in run File "calibre\customize\conversion.py", line 245, in __call__ File "calibre_plugins.kfx_input.__init__", line 125, in convert calibre.ebooks.DRMError: This book has DRM! ```

apprenticeharper / DeDRM_tools