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bip-138 reference the CHACHA20-POLY1305 rationale footnote

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pythcoiner
2026-07-15 00:03:38 -04:00
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@@ -157,7 +157,7 @@ multipath specifiers) and extract its x-coordinate. The result is the
The format uses CHACHA20_POLY1305 (RFC 8439) as the encryption algorithm,
with a 96-bit random nonce and a 128-bit authentication tag to provide confidentiality
and integrity.
and integrity.[^chacha-default]
[^chacha-default]: **Why CHACHA20-POLY1305 ?**
ChaCha20-Poly1305 is already used in Bitcoin Core (e.g., BIP324) and is widely