Fix failing signature tests. Replaced old test certificate with one that lasts 100 years

Included instructions for generating the certificate

pdf/model/appender_test.go

@@ -46,7 +46,7 @@ const testPdfAcroFormFile1 = "./testdata/OoPdfFormExample.pdf"
 
 const testPdfSignedPDFDocument = "./testdata/SampleSignedPDFDocument.pdf"
 
-const testPKS12Key = "./testdata/ks12"
+const testPKS12Key = "./testdata/certificate.p12"
 const testPKS12KeyPassword = "password"
 const testSampleSignatureFile = "./testdata/sample_signature"
 
@@ -382,6 +382,7 @@ func TestAppenderMergePage3(t *testing.T) {
 }
 
 func validateFile(t *testing.T, fileName string) {
+	t.Logf("Validating %s", fileName)
 	data, err := ioutil.ReadFile(fileName)
 	if err != nil {
 		t.Errorf("Fail: %v\n", err)

pdf/model/testdata/makecert.txt

@@ -0,0 +1,15 @@
+# Steps used for creating the certificate here.
+
+# 1. Generate the private key and public certificate. (Need to fill in some info fields).
+openssl req -newkey rsa:2048 -nodes -keyout privkey.pem -x509 -days 36500 -out pubcert.pem
+
+# 2. Review the created certificate
+openssl x509 -text -noout -in pubcert.pem
+
+# 3. Combine into a PKCS#12 bundle. (Need to enter a password: Use "password" for testing).
+openssl pkcs12 -inkey privkey.pem -in pubcert.pem -export -out certificate.p12
+
+# 4. Validate.
+openssl pkcs12 -in certificate.p12  -noout -info
+
+

pdf/model/testdata/privkey.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

pdf/model/testdata/pubcert.pem

@@ -0,0 +1,23 @@
+-----BEGIN CERTIFICATE-----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+2jBFkvSAqgLdm3DJjEaU0V+sz5upVjq0Ma0y61yrDQIDAQABo1MwUTAdBgNVHQ4E
+FgQUPBSnQHXjay4op1dpzwe+JRn0z9wwHwYDVR0jBBgwFoAUPBSnQHXjay4op1dp
+zwe+JRn0z9wwDwYDVR0TAQH/BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAn3zh
+Ve9XP3vg28cC5exeTAgOmSbLdgKHNH7J+R1p289D9zDVT4z6xSyp5ne2R7k7Blt9
+UR9AWLbk2UBoyvuyQgFaQT9cd/M0+SjWDFjd30iSIJASAP2IqWxiaCMlGlR5OnCx
+s76bifrUnmRLXD1QLTSrGhV0HEA0nWRH3/Gx4TEjPWIvvVMG1otzGjtrc8E/FZpS
+k5NPw+b1GcTFkuHBLhvg/sYKHx5t55+iuMY557U/3H5Z1FyZW+neXehX7VrSn2v3
+J/Zpft2IGWa5mRFag20dA7QCjQabBrOwrUng7tULzN6jdpA2clI74bQK5VB7FYQB
+ouan0lLR22Fn/+bLiA==
+-----END CERTIFICATE-----