| .. |
| Copyright 2020 NXP |
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| .. highlight:: bat |
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| .. _cli-data-format: |
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| CLI Data formats |
| ==================================================== |
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| DER |
| ^^^^^^^^^^^^^^^^^^^^^^^^^ |
| DER or `Distinguished Encoding Rules <https://en.wikipedia.org/wiki/X.690#DER_encoding>`_ files are digital certificates in binary format, instead of the ASCII PEM format. |
| DER files may end with .der or .cer, so to differentiate between DER.cer and PEM.cer files, you may need to use a text editor to read the file. |
| A DER file should not have any BEGIN/END statements and will show garbled binary content. |
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| The file as seen in *hexl-mode* of emacs would look as below:: |
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| 00000000: 3081 8702 0100 3013 0607 2a86 48ce 3d02 0.....0...*.H.=. |
| 00000010: 0106 082a 8648 ce3d 0301 0704 6d30 6b02 ...*.H.=....m0k. |
| 00000020: 0101 0420 084f 2d70 eee4 09b9 5546 462e ... .O-p....UFF. |
| 00000030: 2cca 12e0 a046 90a3 3bea 8252 eeb5 4ff5 ,....F..;..R..O. |
| 00000040: a4e9 b2d6 a144 0342 0004 633e 938a 67a7 .....D.B..c>..g. |
| 00000050: a9e6 f35f c369 3b51 3c88 6a0d c260 16f3 ..._.i;Q<.j..`.. |
| 00000060: 5e8c 2c0b 491b 2392 7af0 371d 28b1 1bfb ^.,.I.#.z.7.(... |
| 00000070: e8f4 2e9c 5b0f 2897 c516 ec3e 7d62 97e4 ....[.(....>}b.. |
| 00000080: c06f 936d ba9d ac8a bcd8 .o.m...... |
| -UU=:----F1 ecc_NIST_P256_prv_pkcs8.der All L1 (Hexl) --------------- |
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| PEM |
| ^^^^^^^^^^^^^^^^^^^^^^^^^ |
| PEM or `Privacy Enhanced Mail <https://en.wikipedia.org/wiki/Privacy-Enhanced_Mail>`_ is a Base64 encoded DER certificate. |
| PEM certificates are frequently used for web servers as they can easily be translated into readable data using a simple text editor. |
| PEM file extension may contain .pem or .cer, so to differentiate when a PEM encoded file is opened in a text editor, it contains very distinct headers and footers. |
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| Example:: |
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| -----BEGIN PRIVATE KEY----- |
| MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgCE8tcO7kCblVRkYu |
| LMoS4KBGkKM76oJS7rVP9aTpstahRANCAARjPpOKZ6ep5vNfw2k7UTyIag3CYBbz |
| XowsC0kbI5J68DcdKLEb++j0LpxbDyiXxRbsPn1il+TAb5Ntup2sirzY |
| -----END PRIVATE KEY----- |
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| HEX |
| ^^^^^^^^^^^^^^^^^^^^^^^^^ |
| Hex or `Hexadecimal <https://en.wikipedia.org/wiki/Hexadecimal>`_ (base 16) is a positional system that represents numbers using a base of 16. |
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| Example:: |
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| 308187020100301306072a8648ce3d020106082a8648ce3d030107046d306b02 |
| 01010420084f2d70eee409b95546462e2cca12e0a04690a33bea8252eeb54ff5 |
| a4e9b2d6a14403420004633e938a67a7a9e6f35fc3693b513c886a0dc26016f3 |
| 5e8c2c0b491b23927af0371d28b11bfbe8f42e9c5b0f2897c516ec3e7d6297e4 |
| c06f936dba9dac8abcd8 |
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| REFERENCE KEY |
| ^^^^^^^^^^^^^^^^^^^^^^^^^ |
| - Refer to :numref:`ec-reference-key-format` :ref:`ec-reference-key-format` for EC reference key format. |
| - Refer to :numref:`rsa-reference-key-format` :ref:`rsa-reference-key-format` for RSA reference key format. |
