[xmlsec] DSA Signatures

Aleksey Sanin aleksey at aleksey.com
Mon Jan 4 10:25:40 PST 2021



On 1/4/21 9:07 AM, Timothy Legge wrote:
> Hi
> This is somewhat off topic as it is related to my maintenance of the
> Perl XML::Sig module.
> DSA signatures are a base64 encoded concatenation of the r and s octet
> streams.  I can sign and verify DSA signatures with XML::Sig or xmlsec
> but occasionally the DSA signature validation fails (for both XML::Sig
> and xmlsec at the same time).
> I assume something is getting lost when I concatenate  r and s before
> it is base64 encoded.  Any thoughts based on how xmlsec generates the
> base64 encoded DSA signature?
> regards
> Tim
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