maybe junk but this happens with hundreds of old dos archives .... and with other programs there no problem to unpack them ...
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some older (packed with pkzip) archives open and extract with lot of error messages while with other packers there no problem on very same archives...
When opening 7z archive in 7zip archiver and there are files, encrypted with different passwords, program remember password and all other files in same archive try to unpack with same password...
Faster CRC32 implementation can significaly increase archive checking speed on fast ssd drive... especialy when using test command on some 1000+ archives crc speed matters very much ... https://create.stephan-brumme.com/crc32/