[SSHD-763] Add support for reading ECDSA PUTTY key files

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.0
• Fix Version/s: 1.7.0
• Labels: ecdsa putty
• Assignee: Lyor Goldstein
• Reporter: Lyor Goldstein
• Created: 14/Aug/17 04:45
• Updated: 17/Sep/17 09:27
• Resolved: 17/Sep/17 09:27

Description

See if can use Ruby code example - specifically the openssl.rb part:

when /\Aecdsa-sha2-(nistp(?:256|384|521))\z/
            curve = OPENSSL_CURVES[$1]

            # jruby-openssl doesn't include an EC class (version 0.9.16)
            ec_class = (::OpenSSL::PKey::EC rescue raise ArgumentError, "Unsupported algorithm: #{ppk.algorithm}")

            ec_class.new(curve).tap do |pkey|
              _, _, point = Util.ssh_unpack(ppk.public_blob, :string, :string, :mpint)
              pkey.public_key = ::OpenSSL::PKey::EC::Point.new(pkey.group, point)
              pkey.private_key = Util.ssh_unpack(ppk.private_blob, :mpint).first
            end

Issue Links

• is related to: SSHD-773 Add support for ed25519 Putty key file