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what is HERE map encryption system?

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is it truly encrypted? or just proprietary format file?

have you ever study the files before?

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I think yes, based on Nissan Connect LCN2 manual map data on HERE SD-Card are encrypted by Bosch company, therefore user can't change data on SD-Card, but I'm still working on it, I'm looking for a way how can I copy OpenstreetMap on HERE SD-Card, moreover I believe for solve this problem I'll know what encryption method used by Bosch for encryption, as well as I did many research and then I think they used Advance Data Encryption tools and may be they used AES-256 encryption method(this is a my guess), anyway I'll know who has same experience, about this issue

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Lurker I didn't understand what is you mean, if you mean is any more information, I can say I analysed files in HERE sd-card I found a xml this is content of that file: all file encrypted by Bosch company, I'm trying decrypt files, I guess these files encrypted by AES-cbc-256 bit by "Advance File Encryption" software

<?xml version="1.0" encoding="utf-8"?>
    <META_INFO timestamp="2016-05-20T07:25:41">
        <OPERATOR name="LCN2KAI" />
        <PROGRAM name="sd_sign2" major="1" minor="18" />
    <REVOKED_KEYS timestamp="2017-04-04T10:00:00">
        <BOSCH_SIGNATURE length="48">
            0xf8, 0x17, 0xd5, 0x45, 0xc4, 0x0a, 0x63, 0x12,
            0xe2, 0xec, 0xa9, 0x49, 0x84, 0xe7, 0xd0, 0x4a,
            0x45, 0xdb, 0x2b, 0x33, 0x00, 0x00, 0x00, 0x00,
            0x46, 0x68, 0xf4, 0xc9, 0x85, 0xb5, 0x65, 0xe9,
            0x18, 0x36, 0xa2, 0x72, 0x31, 0xd4, 0x8a, 0x4f,
            0x4b, 0xef, 0x89, 0x5a, 0x00, 0x00, 0x00, 0x00
    <PARTITION title="Partition #1">
        <ID cid="" vin="" did="" />
        <LIFETIME start="2016-05-20T07:25:41" end="" />
            <HASH_FILE offset="0" numberofbytes="0" filename="\CRYPTNAV\MEDIUM.CFG" />
            <HASH_FILE offset="0" numberofbytes="0" filename="\CRYPTNAV\DATA\DATA\MISC\TP_META.DAT" />
            <HASH_FILE offset="0" numberofbytes="2048" filename="\CRYPTNAV\DATA\DATA\MISC\CONTENT.DAT" />
            <HASH_FILE offset="0" numberofbytes="2048" filename="\CRYPTNAV\DATA\CONNECT\RNW\NAV_ROOT.DAT" />
            <HASH_FILE offset="0" numberofbytes="2048" filename="\CRYPTNAV\DATA\CONNECT\LID\CONNECT.DAT" />
            <HASH_FILE offset="0" numberofbytes="0" filename="\CRYPTNAV\DATA\CONNECT\MAP\IDX_CNT.TBL" />
            <HASH_FILE offset="0" numberofbytes="0" filename="\CRYPTNAV\DATA\CONNECT\MAP\RPITABLE.RPI" />
            <HASH_FILE offset="0" numberofbytes="0" filename="\CRYPTNAV\DNL\BIN\NAV\CHKSUMS.MD5" />
            <KEY length="40">
                0xb5, 0x7b, 0x8b, 0x2f, 0x5d, 0x9c, 0xce, 0xb9,
                0x3c, 0x52, 0x15, 0xcc, 0xbc, 0x68, 0x6c, 0xf9,
                0x4d, 0x34, 0xfe, 0xa0, 0xc2, 0xe7, 0xfc, 0xf0,
                0x7f, 0x72, 0x85, 0x83, 0x04, 0x63, 0x59, 0xe8,
                0x8d, 0x1a, 0x91, 0xa1, 0xaf, 0x56, 0x6c, 0x2d
            <BOSCH_SIGNATURE length="48">
                0xee, 0x5e, 0x09, 0xae, 0x50, 0xef, 0x7f, 0x55,
                0xeb, 0x61, 0x0f, 0xc0, 0x7e, 0x6e, 0x85, 0x0d,
                0x7c, 0xdd, 0x09, 0x07, 0x00, 0x00, 0x00, 0x00,
                0x77, 0x42, 0x9d, 0x0c, 0x3f, 0x72, 0x80, 0x97,
                0xd5, 0xa2, 0x73, 0x4f, 0x70, 0x20, 0xea, 0x29,
                0x16, 0x16, 0x86, 0x85, 0x00, 0x00, 0x00, 0x00
        <OPERATOR_SIGNATURE length="48">
            0xd0, 0x0d, 0xb4, 0x03, 0x09, 0xd6, 0x2f, 0x77,
            0x77, 0xd2, 0x7b, 0x90, 0x2c, 0xf3, 0x6c, 0x61,
            0xfb, 0x5b, 0xbd, 0x08, 0x00, 0x00, 0x00, 0x00,
            0x92, 0x88, 0x59, 0xb4, 0x21, 0x04, 0xf6, 0xb9,
            0xef, 0xb2, 0x46, 0xfe, 0x84, 0x15, 0xc2, 0xb6,
            0x7b, 0x4b, 0xb2, 0x2b, 0x00, 0x00, 0x00, 0x00

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