Encrypt/Decrypt AARE/AARQ Message

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By wooreeinfo , 21 February, 2023
Forums
Gurux DLMS for Java

Hi Gurux team,

I'd like to encrypt/decrypt AARE/AARQ message with signed ECDSA certificate.
But I can't find related this.

Would you please let me know how to it works.

Thanks and regards.

Kurumi

3 years 3 months ago

Hi,

Can you send the PDU to me by email? I need to check a few things. There are multiple parameters with ECDSA. For example, DMLS standard allows that PDU is first signed and then encrypted or vice verse.

BR,
Mikko

wooreeinfo

3 years 3 months ago

Hi,

How can I capture PDU from the library?

For now, I'd like to decrypt this message with the ECDSA certificate I have.
(cert and keys are here : https://mail.wooree42.com/2302211748_cert.zip)

RX: 7E A0 21 24 FF 27 93 FD EF 81 80 14 05 02 04 00 06 02 04 00 07 04 00 00 00 01 08 04 00 00 00 01 72 E3 7E
TX: 7E A0 1F 27 24 FF 73 05 AF 81 80 12 05 01 80 06 01 80 07 04 00 00 00 01 08 04 00 00 00 01 53 3B 7E
RX: 7E A8 8A 24 FF 27 10 1E D5 E6 E6 00 60 82 02 3E A1 09 06 07 60 85 74 05 08 01 01 A6 0A 04 08 41 42 43 44 45 46 47 48 A7 82 01 E0 04 82 01 DC 30 82 01 D8 30 82 01 7C A0 03 02 01 02 02 04 1D D1 2D 5E 30 0C 06 08 2A 86 48 CE 3D 04 03 02 05 00 30 30 31 0B 30 09 06 03 55 04 06 13 02 6B 72 31 0E 30 0C 06 03 55 04 0A 0C 05 6B 65 70 63 6F 31 11 30 0F 06 03 55 04 03 0C 08 41 4D 49 43 41 30 30 31 30 20 17 0D 32 31 31 19 BB 7E
TX: 7E A0 08 27 24 FF 31 8F 4A 7E
RX: 7E A8 8A 24 FF 27 12 0C F6 30 30 36 32 32 30 30 30 30 5A 18 0F 39 39 39 39 31 32 33 31 31 34 35 39 35 39 5A 30 43 31 0B 30 09 06 03 55 04 06 13 02 6B 72 31 0E 30 0C 06 03 55 04 0A 0C 05 6B 65 70 63 6F 31 0C 30 0A 06 03 55 04 0B 0C 03 41 4D 49 31 16 30 14 06 03 55 04 03 0C 0D 4E 4A 43 31 33 32 31 30 30 30 35 35 30 30 59 30 13 06 07 2A 86 48 CE 3D 02 01 06 08 2A 86 48 CE 3D 03 01 07 03 42 00 04 8F 3B E1 F4 E6 AF 0C 7E
TX: 7E A0 08 27 24 FF 51 89 29 7E
RX: 7E A8 8A 24 FF 27 14 3A 93 6A 58 59 A7 74 67 FB CA DB FB 05 E4 CB C9 7C CE AE D2 45 7B E8 5E 99 7B BD BE 0F D0 B5 35 18 98 F5 75 86 92 9A CA F5 5A 36 0A 09 40 5A 17 B1 AF 14 7E 17 FF F0 31 97 28 6F A7 8E A3 6D 30 6B 30 59 06 03 55 1D 23 04 52 30 50 80 14 2F 3B D6 ED F8 C2 CE 39 CD C1 E4 F3 79 EA BC FD 49 3E 7F 78 A1 34 A4 32 30 30 31 0B 30 09 06 03 55 04 06 13 02 6B 72 31 0E 30 0C 06 03 55 04 0A 0C 05 6B 65 8E 1E 7E
TX: 7E A0 08 27 24 FF 71 8B 08 7E
RX: 7E A8 8A 24 FF 27 16 28 B0 70 63 6F 31 11 30 0F 06 03 55 04 03 0C 08 52 4F 4F 54 43 41 30 31 82 02 00 85 30 0E 06 03 55 1D 0F 01 01 FF 04 04 03 02 06 C0 30 0C 06 08 2A 86 48 CE 3D 04 03 02 05 00 03 48 00 30 45 02 21 00 DE C4 2E 17 16 57 8E 5B C6 1B AB 27 F3 6D 93 96 25 A6 2E E8 91 FF FC 65 78 95 3E B4 E6 1B 73 9E 02 20 69 34 FA 68 13 C6 6E 78 2D EF 9A 06 12 9D D8 15 5A C3 47 8A 97 4C 78 3F 79 43 9F 27 25 0C A1 B5 7E
TX: 7E A0 08 27 24 FF 91 85 EF 7E
RX: 7E A0 4F 24 FF 27 18 2D 15 E8 11 8A 02 07 80 8B 07 60 85 74 05 08 02 07 AC 22 80 20 53 1D B2 4B C1 6D 40 A8 EA A6 94 6C DD 61 80 4A 0D 05 76 13 0C 74 C9 E3 8B E7 2B 42 D4 FB 3F 71 BE 10 04 0E 01 00 00 00 06 5F 1F 04 00 40 18 1F FF FF 7B D0 7E

Thanks and regards.