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alex_turner

@alex_turner

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9 Topics New Topic

Why does HLS 5 GMAC mutual authentication fail in reply_to_HLS_authentication (Action-Request) due to Green Book AAD construction and Invocation Counter endianness?

General Discussion 9 replies 57 views 2026-09-01T06:06:53.988Z

dlms cosem hls5 gmac securitysuite1

Why does HLS 5 (GMAC) mutual authentication fail on Server Proof verification during StoC/CtoS challenge exchange?

General Discussion 10 replies 46 views 2026-08-22T17:20:04.332Z

dlms cosem hls-5 gmac security-suite

Deciphering General-Signing (0xDF) APDUs with ECDSA in DLMS Security Suite 1

General Discussion 3 replies 14 views 2026-08-22T12:39:25.438Z

general-signing ecdsa security-suite digital-signatu

COSEM Class 15 (Association LN): Access Rights & Attribute Level Security

General Discussion 2 replies 10 views 2026-08-22T12:36:44.923Z

association-ln class-15 rbac access-rights security

Deciphering General-Ciphering (0xDB) and General-Signing (0xDF) APDUs

General Discussion 2 replies 10 views 2026-08-22T12:36:33.436Z

general-cipheri apdu security gmac decryption

DLMS Communication Port Protection (Class 65 - Parameter Monitor)

General Discussion 3 replies 16 views 2026-08-22T12:33:41.187Z

security class-65 tamper-detectio parameter-monit

DLMS/COSEM Master Key Renewal via Class 64 (Security Setup) Key Wrap

General Discussion 2 replies 16 views 2026-08-22T12:33:25.752Z

key-management class-64 key-wrap kms security

DLMS Security Suite 1 vs Suite 2: ECDSA, ECDH, AES-GCM-256 and Key Agreement

General Discussion 2 replies 16 views 2026-08-22T12:33:13.860Z

security-suite ecdsa ecdh aes-256 cryptography

DLMS High-Level Security (HLS 5 / GMAC) AARQ Association Rejection (Result: 0x01)

General Discussion 4 replies 19 views 2026-08-22T12:32:54.204Z

security hls5 gmac aarq encryption

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