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Merge #1002: BIP155: Mention SHA3-256 explicitly

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6ef71b344c BIP155: Small text improvements (Hennadii Stepanov)
562f1d7188 BIP155: Mention SHA3-256 explicitly (Hennadii Stepanov)

Pull request description:

  It seems better to clarify that `CHECKSUM` in Tor onion v3 address uses SHA3-256 hash function.

ACKs for top commit:
  vasild:
    ACK 6ef71b344
  laanwj:
    ACK 6ef71b344c

Tree-SHA512: b88c7dfeeda2a99cfe1042c9f4e7cbeb6047882bf97ce9c1dd5e1f4a30203a9a03702638cc4b6c3b573f6c0a05b73a5ca43a77352a5ca24a32d19be129f8b317
This commit is contained in:
Wladimir J. van der Laan
2020-10-06 15:51:19 +02:00
parent cca9b983a1 6ef71b344c
commit ebeb28ee0e
1 changed files with 4 additions and 3 deletions
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bip-0155.mediawiki
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@@ -164,10 +164,11 @@ onion_address = base32(PUBKEY | CHECKSUM | VERSION) + ".onion"
CHECKSUM = H(".onion checksum" | PUBKEY | VERSION)[:2] CHECKSUM = H(".onion checksum" | PUBKEY | VERSION)[:2]
where: where:
- PUBKEY is the 32 bytes ed25519 master pubkey of the hidden service. - PUBKEY is the 32 bytes ed25519 master pubkey of the hidden service
- VERSION is an one byte version field (default value '\x03') - VERSION is a one byte version field (default value '\x03')
- ".onion checksum" is a constant string - ".onion checksum" is a constant string
- CHECKSUM is truncated to two bytes before inserting it in onion_address - CHECKSUM is truncated to two bytes before inserting it in onion_address
- H() is the SHA3-256 cryptographic hash function
</pre> </pre>
Tor v3 addresses MUST be sent with the <code>TORV3</code> network ID, with the 32-byte PUBKEY part in the address field. As VERSION will always be '\x03' in the case of v3 addresses, this is enough to reconstruct the onion address. Tor v3 addresses MUST be sent with the <code>TORV3</code> network ID, with the 32-byte PUBKEY part in the address field. As VERSION will always be '\x03' in the case of v3 addresses, this is enough to reconstruct the onion address.