# Interface Description

## Interface Description

**Important Notes:**
1. The message content (UTF-8 encoded) needs to be converted to hexadecimal code before sending, for example, "你好" converts to "e4bda0e5a5bd"
2. Phone numbers must include international country codes (e.g., 00628131565741)
3. Password encryption rule: md5(spid+"00000000"+"plaintext password"+timestamp) For example:
   Before MD5: testspid00000000testpwd1601029303
   After MD5: a14e201f22aafbae74c4d72030ad5a8d