Module: PkernelJce::Rfc3161::Response

Included in:
Pkernel::Rfc3161::Response, PkernelJce::Rfc3161ResponseEngine
Defined in:
lib/pkernel_jce/rfc3161.rb

Instance Method Summary collapse

Instance Method Details

#dump(resp, opts = { }) ⇒ Object

end parse()



266
267
268
269
270
271
272
 
# File 'lib/pkernel_jce/rfc3161.rb', line 266

def dump(resp, opts = { })
  if resp.nil?
    raise PkernelJce::Error, "RFC3161 response to dump is nil."
  end

  resp.encode        
end

#generate(opts = { }) ⇒ Object

generate rfc3161 timestamp token



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
 
# File 'lib/pkernel_jce/rfc3161.rb', line 18

def generate(opts = { })
  bin = opts[:bin]
  file = opts[:file]

  if not (file.nil? or file.empty?)
    breq = IoUtils.file_to_memory_byte_array(file)
  elsif not bin.nil?
    breq = IoUtils.ensure_java_bytes(bin)
  else
    raise PkernelJce::Error, "No request file or memory is given to generate timestamp response"
  end


  id = opts[:identity]
  if id.nil?
    raise PkernelJce::Error, "Identity is not given to generate timestamping token"
  end

  req = org.bouncycastle.tsp.TimeStampRequest.new(breq) 
  #p req.messageImprintAlgOID

  begin
    dgstEng = BcHelpers.find_digest_calculator(req.messageImprintAlgOID)
    PkernelJce::GConf.instance.glog.debug "Timestamp request using hash '#{dgstEng}'"
  rescue PkernelJce::Error => ex
    opts[:status] = Pkernel::Rfc3161::RESP_REJECTION
    opts[:reason] = Pkernel::Rfc3161::REASON_BAD_ALG
    opts[:reasonMsg] = "Digest not supported"
  end

  chain = id.chain
  list = java.util.ArrayList.new
  chain.each do |c|
    list.add(c) 
  end
  store = org.bouncycastle.cert.jcajce.JcaCertStore.new(list)

  # this one seems useless since the actual algo shall be taken from request anyway...
  signHashAlgo = opts[:signHash] || "SHA256"
  policyId = opts[:policy_id] || "1.2.3.4.1"
  signInfo = org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder.new.setProvider(id.provider).build(PkernelJce::KeyPair.derive_signing_algo(id.privKey,signHashAlgo), id.privKey, id.certificate)

  # policy 1.2.3.4.1 = tsa_policy1
  gen = org.bouncycastle.tsp.TimeStampTokenGenerator.new(signInfo, BcHelpers.find_digest_calculator(signHashAlgo), org.bouncycastle.asn1.ASN1ObjectIdentifier.new(policyId))
  # policy 1.2 = ISO Member body
  #gen = org.bouncycastle.tsp.TimeStampTokenGenerator.new(signInfo, SHA256DigestCalculator.new, org.bouncycastle.asn1.ASN1ObjectIdentifier.new("1.2"))

  gen.addCertificates(store)

  if req.cert_req?
    PkernelJce::GConf.instance.glog.debug "Client requested to include certificate for timestamping"
    # this option requires the request to reqCert set first if not error shall be thrown at the verification end
    gen.setTSA(org.bouncycastle.asn1.x509.GeneralName.new(PkernelJce::Certificate.ensure_bc_cert(id.certificate).subject_to_x500))
  end

  status = opts[:status] || Pkernel::Rfc3161::RESP_GRANTED
  reason = opts[:reason] || Pkernel::Rfc3161::REASON_SYS_FAILURE
  reasonMsg = opts[:reasonMsg] || ""
  
  respGen = org.bouncycastle.tsp.TimeStampResponseGenerator.new(gen, org.bouncycastle.tsp.TSPAlgorithms::ALLOWED)
  
  if status == Pkernel::Rfc3161::RESP_GRANTED or status == Pkernel::Rfc3161::RESP_GRANTED_WITH_MODS
    
    # etsi want min 1 sec...:)
    accuracy = opts[:accuracy] || { seconds: 1 }
    if not accuracy[:seconds].nil?
      PkernelJce::GConf.instance.glog.debug "Timestamping setting accuracy #{accuracy[:seconds]} seconds"
      gen.setAccuracySeconds(accuracy[:seconds].to_i)
    end

    if not accuracy[:milis].nil?
      PkernelJce::GConf.instance.glog.debug "Timestamping setting accuracy #{accuracy[:milis]} mili seconds"
      gen.setAccuracyMillis(accuracy[:milis].to_i)
    end

    if not accuracy[:micros].nil?
      PkernelJce::GConf.instance.glog.debug "Timestamping setting accuracy #{accuracy[:micros]} micro seconds"
      gen.setAccuracyMicros(accuracy[:micros].to_i)
    end

    tsResp = respGen.generateGrantedResponse(req, java.math.BigInteger.new(SecureRandom.uuid.gsub("-",""),16), java.util.Date.new)
    
  else
    
    tsResp = respGen.generateFailResponse(status, reason, reasonMsg)
  end
  #resp = org.bouncycastle.tsp.TimeStampResponse.new(tsResp.getEncoded())

  #resp
  tsResp 
end

#parse(opts = {}) ⇒ Object

end generate()



113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
 
# File 'lib/pkernel_jce/rfc3161.rb', line 113

def parse(opts = {})

  file = opts[:file]
  bin = opts[:bin]

  if not (file.nil? or file.empty?)
    bresp = IoUtils.file_to_memory_byte_array(file)
  elsif not bin.nil?
    bresp = IoUtils.ensure_java_bytes(bin)
  else
    raise PkernelJce::Error, "No file or memory is given to parse timestamp response"
  end

  result = { }
  verifyResp = opts[:verifyResp] || true
  
  resp = org.bouncycastle.tsp.TimeStampResponse.new(bresp)

  result[:status] = resp.status

  if resp.status == Pkernel::Rfc3161::RESP_GRANTED || resp.status == Pkernel::Rfc3161::RESP_GRANTED_WITH_MODS

    token = resp.getTimeStampToken

    if not token.nil?
      info = token.getTimeStampInfo
    else
      PkernelJce::GConf.instance.glog.warn "Timestamp does not contain token!"
    end



    if not token.nil? and verifyResp

      tsaCert = opts[:tsaCert]

      signingCert = nil 
      token.getCertificates.to_a.each do |c|
        if c.subject_to_x500.equals(info.getTsa.name)
          signingCert = c
          break
        end
      end

      if not tsaCert.nil?
        # check if tsaCert and signingCert is same
        if not tsaCert.equals(signingCert)
          raise PkernelJce::Error, "Given TSA cert and signing cert obtained from the timestamp token is not the same"
        end
      end

      prov = PkernelJce::Provider.add_default
      begin
        token.validate(org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoVerifierBuilder.new.setProvider(prov).build(signingCert))
        result[:signature_status] = :verified
        PkernelJce::GConf.instance.glog.debug "Timestamp verified against signing cert [#{signingCert.subject}]"

        result[:signer] = { }
        result[:signer][:cert] = signingCert
        result[:signer][:chain] = token.getCertificates.to_a

      rescue Exception => ex
        result[:signature_status] = :failed
        result[:signature_status_details] = ex.message
      end
    end
    # end verifyResp

    req = opts[:request]
    if not token.nil? and not req.nil?

      source = opts[:data]
      if not source.nil?
        sfile = source[:file]
        sbin = source[:bin]
      end

      if not (sfile.nil? or sfile.empty?) or not sbin.nil?

        dgst = PkernelJce::BcHelpers.find_digest_calculator(req.getMessageImprintAlgOID)
        if not dgst.nil?
          if not (sfile.nil? or sfile.empty?)
            PkernelJce::GConf.instance.glog.debug "Calculating hash for source '#{sfile}'"
            b = Java::byte[10240].new
            fis = java.io.FileInputStream.new(sfile)
            while((read = fis.read(b,0,b.length)) != -1)
              dgst.getOutputStream.write(b,0,read)
            end
            dgst.getOutputStream.close

          elsif not sbin.nil?
            PkernelJce::GConf.instance.glog.debug "Calculating hash for source from memory"
            dgst.getOutputStream.write(sbin.to_java_bytes)
            dgst.getOutputStream.close
          end

          if not java.util.Arrays.equals(dgst.digest, req.getMessageImprintDigest)
            raise PkernelJce::Error, "Source digest is different from request! Source file is not the original data sent for timestamp"
          else
            PkernelJce::GConf.instance.glog.debug "Source file hash matched request digest."
          end
        else
          PkernelJce::GConf.instance.glog.warn "Failed to initialize the hashing algo for source verification. Source verification shall be skipped."
        end
      end
      # end not source.nil?

      begin
        resp.validate(req)
        result[:request_validation] = :verified
        result[:digest] = info.getMessageImprintDigest
        result[:digest_algo] = info.getMessageImprintAlgOID
        PkernelJce::GConf.instance.glog.debug "Timestamp response verified against timestamp request. Checked [Nonce, Status, Digest, Hash Engine, Policy, Signing Certificates]"
      rescue Exception => ex
        result[:request_validation] = :failed
        result[:request_validation_details] = ex.message
      end
    end


    if not info.nil?
      acc = info.getAccuracy
      result[:accuracy] = {}
      result[:accuracy][:seconds] = acc.getSeconds.nil? ? 0 : acc.getSeconds.value
      result[:accuracy][:milis] = acc.getMillis.nil? ? 0 : acc.getMillis.value
      result[:accuracy][:micros] = acc.getMicros.nil? ? 0 : acc.getMicros.value
      time = info.getGenTime
      result[:time] = time
      nonce = info.getNonce
      result[:nonce] = nonce.to_s(16)
      serial = info.getSerialNumber
      result[:serial] = serial.to_s(16)
      policy = info.getPolicy
      result[:policy] = policy
      tsa = info.getTsa
      result[:tsa_name] = tsa.name.to_s
      ordered = info.isOrdered
      result[:ordered] = ordered
    end

  else
    # status is NOT granted or granted with mods!
    result[:reason] = resp.getFailInfo
    result[:reasonMsg] = resp.getStatusString
  end
  # if status is granted or granted with mods
  
  result
  
end