RFC Errata Report » RFC Editor (original) (raw)
RFC 8439, "ChaCha20 and Poly1305 for IETF Protocols", June 2018
Source of RFC: IRTF
See Also: RFC 8439 w/ inline errata
Errata ID: 5989
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Lê Minh Đăng
Date Reported: 2020-02-26
Verifier Name: Stanislav Smyshlyaev
Date Verified: 2021-04-28
Section 2.4.1 says:
encrypted_message += block ^ key_stream ... encrypted_message += (block^key_stream)[0..len(plaintext)%64]
It should say:
encrypted_message |= block ^ key_stream ... encrypted_message |= (block^key_stream)[0..len(plaintext)%64]
Notes:
The encrypted_message is the result of concatenation of blocks.
"|" and "|=" are used for concatenation elsewhere in the document, changing "+=" to "|=" will reduce ambiguity.