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RFC 5246, "The Transport Layer Security (TLS) Protocol Version 1.2", August 2008

Note: This RFC has been obsoleted by RFC 8446

Note: This RFC has been updated by RFC 5746, RFC 5878, RFC 6176, RFC 7465, RFC 7507, RFC 7568, RFC 7627, RFC 7685, RFC 7905, RFC 7919, RFC 8447, RFC 9155

Source of RFC: tls (sec)
See Also: RFC 5246 w/ inline errata

Errata ID: 4912
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Nikolai Malykh
Date Reported: 2017-01-18
Verifier Name: Paul Wouters
Date Verified: 2024-01-16

Section A.4.1 says: 

   SignatureAndHashAlgorithm
    supported_signature_algorithms<2..2^16-1>;

It should say:

   SignatureAndHashAlgorithm
    supported_signature_algorithms<2..2^16-2>;

Notes:

Error in last sentence. See errata ID 2865.

Paul Wouters (AD): From errata ID 2865: The supported_signature_algorithms field is a variable length array. As such ceiling and floor should be specified, and they should be multiple of the base type (which is two bytes long in this case). See section 7.4.1.4.1 for a valid definition of this field.
This is already fixed in TLS 1.3 RFC8446

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