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Add comprehensive spec audit results and pyMC_core issue reports

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- CHANGELOG.md: Full audit findings organized by severity
- PYMC_CORE_ISSUES.md: 7 evidence-based bug reports for pyMC_core
  (wrong constants, broken path_len decoding, wrong TRACE hash,
  wrong SNR calculation)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Add comprehensive spec audit results and pyMC_core issue reports

- CHANGELOG.md: Full audit findings organized by severity
- PYMC_CORE_ISSUES.md: 7 evidence-based bug reports for pyMC_core
  (wrong constants, broken path_len decoding, wrong TRACE hash,
  wrong SNR calculation)
- Remove ERRATA.md: contents already covered by audit findings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
swaitsandClaude Opus 4.6 committed 2026-04-01 21:37:57 -06:00
commit 9db901088e
79 files changed
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corpus/crypto/sha256/basic.json
+84
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@@ -0,0 +1,84 @@
{
"$schema": "../../schema/test-vector.schema.json",
"name": "SHA-256 Basic",
"spec_ref": "spec/14-crypto.md",
"protocol_version": 0,
"description": "Basic SHA-256 hash computation test vectors. MeshCore uses SHA-256 for packet hashing, channel hash derivation, and HMAC.",
"vectors": [
{
"id": "sha-001",
"description": "SHA-256 of empty string",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855"
}
},
"binary": "3D 00 E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855",
"crypto_context": {
"plaintext": ""
},
"notes": "SHA-256('') = E3B0C442...B855. Standard NIST test vector."
},
{
"id": "sha-002",
"description": "SHA-256 of 'abc'",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "BA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD"
}
},
"binary": "3D 00 BA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD",
"crypto_context": {
"plaintext": "616263"
},
"notes": "SHA-256('abc') = BA7816BF...15AD. Standard NIST test vector."
},
{
"id": "sha-003",
"description": "SHA-256 of 'MeshCore'",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "F4F17278283E082A4743CCA308285D601E0F9943E6D6F9271B5B8C7DFED09DC0"
}
},
"binary": "3D 00 F4F17278283E082A4743CCA308285D601E0F9943E6D6F9271B5B8C7DFED09DC0",
"crypto_context": {
"plaintext": "4D657368436F7265"
},
"notes": "SHA-256('MeshCore')."
}
]
}
corpus/crypto/sha256/packet-hash.json
+109
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{
"$schema": "../../schema/test-vector.schema.json",
"name": "SHA-256 Packet Hash",
"spec_ref": "spec/16-packet-hash.md",
"protocol_version": 0,
"description": "Tests MeshCore packet hash computation: SHA-256(payload_type || payload)[0..7]. TRACE packets additionally include path_len in the hash input.",
"vectors": [
{
"id": "phash-001",
"description": "Packet hash for ACK with CRC 0xDEADBEEF",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "1BEE08540E8F7E5B"
}
},
"binary": "3D 00 1BEE08540E8F7E5B",
"crypto_context": {
"plaintext": "03 EFBEADDE"
},
"notes": "SHA-256(0x03 || EFBEADDE)[0..7] = 1BEE08540E8F7E5B. Input: type byte 0x03 (ACK) + CRC 0xDEADBEEF as LE."
},
{
"id": "phash-002",
"description": "Packet hash for TRACE (path_len=0): includes path_len in hash",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "C105C34E45E60009"
}
},
"binary": "3D 00 C105C34E45E60009",
"crypto_context": {
"plaintext": "09 00 01000000 02000000 00"
},
"notes": "SHA-256(0x09 || 0x00 || tag=1_LE || auth=2_LE || flags=0)[0..7]. TRACE special case: path_len byte (0x00) included after type byte."
},
{
"id": "phash-003",
"description": "Packet hash for TRACE (path_len=3): different hash due to path_len",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "B83FB2E0EE276404"
}
},
"binary": "3D 00 B83FB2E0EE276404",
"crypto_context": {
"plaintext": "09 03 01000000 02000000 00"
},
"notes": "Same TRACE payload but path_len=3 instead of 0. Different hash proves path_len is included in computation."
},
{
"id": "phash-004",
"description": "Packet hash for ADVERT (all-AA pubkey, ts=0, all-BB sig)",
"type": "encode_decode",
"structured": {
"header": {
"version": 0,
"payload_type": "raw_custom",
"route_type": "flood"
},
"path": {
"hash_size": 1,
"hash_count": 0,
"hashes": []
},
"payload": {
"data": "F73157720FB1B5E1"
}
},
"binary": "3D 00 F73157720FB1B5E1",
"crypto_context": {
"plaintext": "04 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 00000000 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"
},
"notes": "SHA-256(0x04 || advert_payload)[0..7]. Type 0x04 = ADVERT. Not a TRACE, so path_len is NOT included."
}
]
}