[TLS] PSS SignatureScheme ordinal choice
Joseph Birr-Pixton <jpixton@gmail.com> Sat, 29 October 2016 21:28 UTC
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From: Joseph Birr-Pixton <jpixton@gmail.com>
Date: Sat, 29 Oct 2016 22:27:58 +0100
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Subject: [TLS] PSS SignatureScheme ordinal choice
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Just a quick question. In TLS1.3 we have:
enum {
rsa_pkcs1_sha1 (0x0201),
rsa_pkcs1_sha256 (0x0401),
rsa_pkcs1_sha384 (0x0501),
rsa_pkcs1_sha512 (0x0601),
ecdsa_secp256r1_sha256 (0x0403),
ecdsa_secp384r1_sha384 (0x0503),
ecdsa_secp521r1_sha512 (0x0603),
(then)
rsa_pss_sha256 (0x0804),
rsa_pss_sha384 (0x0805),
rsa_pss_sha512 (0x0806),
} SignatureScheme;
This kind of looks like someone was trying to make the
rsa_pss_shasomething ordinals be decodable by a TLS1.2 implementation
given a SignatureAlgorithm reservation for PSS of 8, but got the bytes
the wrong way around.
Is this an error, or am I missing something subtle?
Cheers,
Joe
- [TLS] PSS SignatureScheme ordinal choice Joseph Birr-Pixton
- Re: [TLS] PSS SignatureScheme ordinal choice Ilari Liusvaara
- Re: [TLS] PSS SignatureScheme ordinal choice Eric Rescorla