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bip138: clarify rejection of empty payloads

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Clarify that an empty payload contains zero content items. Add a
vector that rejects a payload consisting only of the 0x00 terminator.
This commit is contained in:
Sjors Provoost
2026-09-23 14:31:54 +02:00
committed by Murch
parent aa098559bf
commit bf64a12098
2 changed files with 6 additions and 1 deletions
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2
bip-0138.md
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@@ -338,7 +338,7 @@ CHACHA20_POLY1305 (per RFC 8439) supports plaintext up to 2^38 - 64 bytes.
Implementations MAY impose stricter limits based on platform constraints Implementations MAY impose stricter limits based on platform constraints
(e.g., limiting to 2^32 - 1 bytes on 32-bit architectures). (e.g., limiting to 2^32 - 1 bytes on 32-bit architectures).
Implementations MUST reject empty payloads. Implementations MUST reject empty payloads (i.e. zero content items).
#### Ciphertext #### Ciphertext

5
bip-0138/test_vectors/payload.json
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@@ -9,5 +9,10 @@
"content": "61" "content": "61"
} }
] ]
},
{
"description": "Payload with no content item.",
"valid": false,
"payload": "00"
} }
] ]