Bitmessage/PyBitmessage-2024-12-11
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Updated Blind signature specification (markdown)

Peter Šurda 2020-03-29 20:49:01 +08:00
parent f270f286e8
commit f4965aeab2
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Blind-signature-specification.md

@ -9,6 +9,11 @@ Blind signatures use the following primitives which need to be saved into a file
- the first byte is 0x02 or 0x03 (which determines which of the two Y coordinates it uses, the difference is that one is even and one is odd. Other bits are ignored by Bitmessage - the first byte is 0x02 or 0x03 (which determines which of the two Y coordinates it uses, the difference is that one is even and one is odd. Other bits are ignored by Bitmessage
- the next 32 bytes are the X coordinate (which is a bignum) - the next 32 bytes are the X coordinate (which is a bignum)
**Signature chain (100 bytes per level)**:
- Begins with the CA pubkey (35 bytes)
- on the next levels the intermediary pubkey (35B) and a signature of that pubkey signed by the parent pubkey (65B)
- and on the last level, the signature of the message signed by the parent pubkey (65B)
**Private key (32B)**: private key is a 256 bit bignum **Private key (32B)**: private key is a 256 bit bignum
**Public key (35B)**: public key is two bytes of parameters followed by an EC Point as described above **Public key (35B)**: public key is two bytes of parameters followed by an EC Point as described above