Re: [Dcrup] I do not like the dcrup ECC document
Russ Housley <housley@vigilsec.com> Sun, 09 July 2017 20:57 UTC
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From: Russ Housley <housley@vigilsec.com>
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Date: Sun, 09 Jul 2017 16:57:37 -0400
Cc: dcrup@ietf.org, Rich Salz <rsalz@akamai.com>
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To: John Levine <johnl@taugh.com>
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Subject: Re: [Dcrup] I do not like the dcrup ECC document
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John: > In article <14cd0f4ff66348e495e0a7d0da8adc0e@usma1ex-dag1mb1.msg.corp.akamai.com> you write: >> Speaking as an individual, I think the draft-ietf-dcrup-dkim-ecc is wrong. >> >> It specifies curve P256 and ECDSA. > > Here's what -03 says: > > 3. EdDSA-SHA256 Signing Algorithm > > The eddsa-sha256 signing algorithm computes a message hash as defined > in section 3 of [RFC6376], and signs it with Ed25519, the EdDSA > algorithm using the edwards25519 curve, as defined in in RFC 8032 > section 5.1 [RFC8032]. The signing algorithm is PureEdDSA as defined > in RFC 8032 section 4, since the input to the signing algorithm has > already been hashed. The DNS record for the verification public key > MUST have a "k=eddsa" tag to indicate that the key is an EdDSA rather > than RSA key. > > If that's not right, please send text. PureEdDSA does not take a hash as input, it takes the whole to-be-signed content. Russ
- [Dcrup] I do not like the dcrup ECC document Salz, Rich
- Re: [Dcrup] I do not like the dcrup ECC document Mark D. Baushke
- Re: [Dcrup] I do not like the dcrup ECC document Rose, Scott
- Re: [Dcrup] I do not like the dcrup ECC document Salz, Rich
- Re: [Dcrup] I do not like the dcrup ECC document Mark D. Baushke
- Re: [Dcrup] I do not like the dcrup ECC document Rose, Scott
- Re: [Dcrup] I do not like the dcrup ECC document Scott Kitterman
- Re: [Dcrup] I do not like the dcrup ECC document denis bider
- Re: [Dcrup] I do not like the dcrup ECC document John Levine
- Re: [Dcrup] I do not like the dcrup ECC document Eric Rescorla
- Re: [Dcrup] I do not like the dcrup ECC document Russ Housley
- Re: [Dcrup] I do not like the dcrup ECC document John R Levine
- Re: [Dcrup] I do not like the dcrup ECC document John R Levine
- Re: [Dcrup] I do not like the dcrup ECC document Scott Kitterman
- Re: [Dcrup] I do not like the dcrup ECC document Murray S. Kucherawy
- Re: [Dcrup] I do not like the dcrup ECC document Brandon Long