A blockchain integrated station comprising a smart contract processing chip and a cryptographic acceleration card assembled thereon, wherein the smart contract processing chip is configured to process a smart contract and complete key negotiation with a provider for the provider to encrypt and transmit a node private key of a blockchain node to the smart contract processing chip based on a negotiated key; wherein the cryptographic acceleration card comprises: a collecting module, configured to collect and output hardware feature data of the blockchain integrated station to a key generating module (11, 21, 51) in response to receiving a key generation request, the key generation request based on a request of a hardware root-of-trust key; the key generating module (11, 21, 51), configured to generate an identity key of the blockchain integrated station according to the hardware feature data of the blockchain integrated station, wherein the identity key comprises an identity private key and an identity public key, wherein the identity private key is the hardware root-of-trust key and corresponds to the identity public key; and an encrypting and decrypting module (12, 22, 52), configured to be connected to the key generating module (11, 21, 51) to encrypt the identity private key into a private key ciphertext for storage; wherein the cryptographic acceleration card is configured to maintain the hardware root-of-trust key, perform signature operation based on the hardware root-of-trust key and assist the smart contract processing chip to complete the key negotiation with the provider. wherein the smart contract processing chip is configured to process a smart contract and complete key negotiation with a provider for the provider to encrypt and transmit a node private key of a blockchain node to the smart contract processing chip based on a negotiated key; wherein the cryptographic acceleration card comprises: a collecting module, configured to collect and output hardware feature data of the blockchain integrated station to a key generating module (11, 21, 51) in response to receiving a key generation request, the key generation request based on a request of a hardware root-of-trust key; the key generating module (11, 21, 51), configured to generate an identity key of the blockchain integrated station according to the hardware feature data of the blockchain integrated station, wherein the identity key comprises an identity private key and an identity public key, wherein the identity private key is the hardware root-of-trust key and corresponds to the identity public key; and an encrypting and decrypting module (12, 22, 52), configured to be connected to the key generating module (11, 21, 51) to encrypt the identity private key into a private key ciphertext for storage; wherein the cryptographic acceleration card is configured to maintain the hardware root-of-trust key, perform signature operation based on the hardware root-of-trust key and assist the smart contract processing chip to complete the key negotiation with the provider. a collecting module, configured to collect and output hardware feature data of the blockchain integrated station to a key generating module (11, 21, 51) in response to receiving a key generation request, the key generation request based on a request of a hardware root-of-trust key; the key generating module (11, 21, 51), configured to generate an identity key of the blockchain integrated station according to the hardware feature data of the blockchain integrated station, wherein the identity key comprises an identity private key and an identity public key, wherein the identity private key is the hardware root-of-trust key and corresponds to the identity public key; and an encrypting and decrypting module (12, 22, 52), configured to be connected to the key generating module (11, 21, 51) to encrypt the identity private key into a private key ciphertext for storage; wherein the cryptographic acceleration card is configured to maintain the hardware root-of-trust key, perform signature operation based on the hardware root-of-trust key and assist the smart contract processing chip to complete the key negotiation with the provider.