Security chip-based security authentication method and system, security chip, and readable storage medium

A security chip, comprising:

• a processor and a memory,
• wherein the memory stores computer programs, when the computer programs are executed by the processor, cause the security chip to perform the following steps:
• a requesting step, of sending a key acquisition request to an auxiliary chip based on an information processing request sent by an upper computer is received;
• a receiving step, of receiving a first ciphertext data which is sent by the auxiliary chip in response to the key acquisition request, wherein the first ciphertext data is generated by encrypting a security key;
• and
• a processing step, of performing decryption processing on the first ciphertext data, and performing information processing based on the security key obtained by decryption,
• wherein:
• the step of sending the key acquisition request to the auxiliary chip comprises sending a second ciphertext data to the auxiliary chip, wherein the second ciphertext data is generated by the security chip encrypting a first random number using a pre-stored symmetric key, and the first random number is a random number which is generated by the security chip after receiving the information processing request;
• the auxiliary chip uses a pre-stored symmetric key to decrypt the second ciphertext data to obtain the first random number, and then uses the first random number as a symmetric key to encrypt the security key to form the first ciphertext data;
• and
• the step of decrypting the first ciphertext data comprises using the first random number as a symmetric key to decrypt the first ciphertext data.