diff --git a/.gitignore b/.gitignore
index 2374b22..df20c3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,4 @@ build/
 ### VS Code ###
 .vscode/
 /cert/
+/src/main/resources/dev/
diff --git a/src/main/resources/dev/wechat/10398/01ac632fea184e248d0375e9917063a4.pem b/src/main/resources/dev/wechat/10398/01ac632fea184e248d0375e9917063a4.pem
new file mode 100644
index 0000000..a08bc93
--- /dev/null
+++ b/src/main/resources/dev/wechat/10398/01ac632fea184e248d0375e9917063a4.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCUhkLLcEzSnxFF
+hhjUXcwBuvdTypKWu/CFe0jQGgFnQVKIb0hkAR8YNiXE45zYn6sVgFY99NrtPjhD
+xE0PrXky3i4EXxqeG/FgSnYm5/Uc2Q/euMRoTDZHDBMFMXanwStvJBmimFtMwYn5
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+L9GDPXkXYP6T3SJHkVb1Y5O+eTFRGwW1P61hTJjTP+5K4L0V0H1LLnHtAoGAEDBU
+1lJVvUZAyxcWTWKM/3cI9uyffW4ClU2qoDnLFvalnJHjlEP1fW7ZVzhXDlQfpyrx
++oQTT+CyepLOKtbXuIMbu4Q6RI//IYCyPtt9h4gYkFkVHmwMI+0mX3r6o8EFc7hE
+xpx+yeoyQ3oGAazKSQQKR3eTHS0xD81TPVxfwoECgYEAvBi3fPvIQ08pxk6kxj+S
+bypHo06JHT1Fi8pmKtKCGLduK85dCeBZqHmsorWC/qg4RgCFWFFKfrFTGTxC4nf8
+MRQHmKxq+SAh4SvFgRDA0lyaUWmw7H/JpolbBDIGnXhoDI0CmQU3s2xsQdJnNPIL
+azgaJXtOu+wr1MPR7Ij5OTU=
+-----END PRIVATE KEY-----
diff --git a/src/main/resources/dev/wechat/10398/bac91dfb3ef143328dde489004c6d002.pem b/src/main/resources/dev/wechat/10398/bac91dfb3ef143328dde489004c6d002.pem
new file mode 100644
index 0000000..50afe22
--- /dev/null
+++ b/src/main/resources/dev/wechat/10398/bac91dfb3ef143328dde489004c6d002.pem
@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----
+MIIEFDCCAvygAwIBAgIUSjIxWE6Ttq53ggB00H6t6sy34iMwDQYJKoZIhvcNAQEL
+BQAwXjELMAkGA1UEBhMCQ04xEzARBgNVBAoTClRlbnBheS5jb20xHTAbBgNVBAsT
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+ZW4wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC5AOeoNuRReVPfOodE
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+8pkJBzxz4U+zoQ9n3yY4CgDUBeAO8eNHhEQTTOTFUIvIlRxyr0EVuTHNP7pIkxA6
+gUvajWjJFbvU393vDHA9RflWrBNw1qVjkPPUx6axizD3wS8f77bwuspEWGTza/pS
+g96HWUwFh9OSlQNPOjPG4km2YRQwGhoRMlLeZsUB+a0PtV0HI/B0TbY5u2EmPt0R
+uNZLmcwImtiANYmySww6gp5uo4+im0P/kHKynPrW1SkS+8M9JP5T7Xck3bnHNv4S
+9UOPAgMBAAGjgbkwgbYwCQYDVR0TBAIwADALBgNVHQ8EBAMCA/gwgZsGA1UdHwSB
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+q9ObLqSV4Cy/8lQMNh4Q37cdc3X+pAlTr7MtKka8ZcXYvbMBqus0dfJZayZvW7Ak
+nnaXXJ4k7urgHOGYsZlZ+HC+DC/sYoN3DXzvg3XPlL0SNEQH0cWrRbaQnpOKVMk5
+TptbeNHKJfUxVW5jh4GtBFqvLeiOruY+gFYg7UkCKWo9ZIYe7/mEvJeHYh3acTTl
+DOl3L0fR5KR7vqFMwZEUZxVOs6K2ANSCr57OQPBV++MG4DPr3yOhCQ==
+-----END CERTIFICATE-----
\ No newline at end of file
diff --git a/src/main/resources/dev/wechat/CertificateDownloader.jar b/src/main/resources/dev/wechat/CertificateDownloader.jar
new file mode 100644
index 0000000..a49c526
Binary files /dev/null and b/src/main/resources/dev/wechat/CertificateDownloader.jar differ