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BIP-0047: Adjust text to match test vectors

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The original implementation of BIP-47 in Samourai Wallet reversed
the parameters in the calculation of the HMAC-SHA512 step of
notification transaction blinding.

This change adjusts the text to match the as-implementend behavior
in deployed BIP-47 wallets and the test vectors.
This commit is contained in:
Justus Ranvier 2017-09-28 08:47:50 -05:00 committed by Justus Ranvier
parent 3a7585365f
commit 5ec9df085e
1 changed files with 2 additions and 2 deletions
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@ -1,7 +1,7 @@
RECENT CHANGES:
* (28 Sep 2017) Adjust text to match test vectors
* (19 Apr 2016) Define version 2 payment codes
* (17 Apr 2016) Clarify usage of outpoints in notification transactions
* (18 Dec 2015) Update explanations to resolve FAQs
<pre>
BIP: 47
@ -158,7 +158,7 @@ Note: this procedure is used if Bob uses a version 1 payment code (regardless of
## Alice selects the private key corresponding to the designated pubkey: <pre>a</pre>
## Alice selects the public key associated with Bob's notification address: <pre>B, where B = bG</pre>
## Alice calculates a secret point: <pre>S = aB</pre>
## Alice calculates a 64 byte blinding factor: <pre>s = HMAC-SHA512(x, o)</pre>
## Alice calculates a 64 byte blinding factor: <pre>s = HMAC-SHA512(o, x)</pre>
### "x" is the x value of the secret point
### "o" is the outpoint being spent by the designated input
# Alice serializes her payment code in binary form.