How can the blockchain applications trust the data response they get from oraclize?

Oraclize is a service that allows smart contracts to securely connect to external data sources, APIs, and other off-chain resources. When using Oraclize, smart contracts can trust the data they receive because Oraclize uses a combination of techniques to ensure the authenticity and integrity of the data it delivers

There are several ways in which Oraclize ensures the authenticity and integrity of the data it delivers to smart contracts:

1).Trusted hardware modules: Oraclize uses trusted hardware modules, such as Hardware Security Modules (HSMs) and Trusted Execution Environments (TEEs), to protect against tampering and provide a secure execution environment for code that handles sensitive operations.

2). Digital signatures: Oraclize can use digital signatures to sign the data it provides, allowing smart contracts to verify that the data has not been tampered with.

3). Cryptographic hashes: Oraclize can use cryptographic hashes to ensure the integrity of the data, allowing smart contracts to confirm that the data has not been modified in transit.

4). Secure data transport: Oraclize uses secure channels, such as HTTPS, to transport data from external sources to smart contracts.

5). Reputation system: Oraclize maintains a reputation system that allows users to rate the quality of the service and helps ensure that only reliable data sources are used.

Overall, these techniques work together to ensure that smart contracts can trust the data they receive from Oraclize.

One of the ways Oraclize ensures the trustworthiness of the data it provides is through the use of trusted hardware modules, such as Hardware Security Modules (HSMs) and Trusted Execution Environments (TEEs). These modules are designed to protect against tampering and provide a secure execution environment for code that handles sensitive operations, such as signing data or generating cryptographic keys

Hardware Security Modules (HSMs) and Trusted Execution Environments (TEEs) are specialized hardware devices that provide a secure execution environment for code that handles sensitive operations. They are designed to protect against tampering and other types of attacks by physically isolating the code and data that they process from the rest of the system.

In the case of Oraclize, these hardware modules are used to securely sign and verify data, generate and store cryptographic keys, and perform other sensitive operations. By using trusted hardware modules, Oraclize can ensure that the data it provides to smart contracts has not been tampered with and that the code that handles the data is secure.

For example, when Oraclize signs data using an HSM or TEE, the device performs the signing operation in a secure environment that is isolated from the rest of the system. This ensures that the signature cannot be forged or tampered with, and allows smart contracts to trust that the data has not been modified. Similarly, when Oraclize generates a cryptographic key using an HSM or TEE, the key is generated and stored in a secure environment that is resistant to tampering and other attacks.

Overall, the use of trusted hardware modules is an important part of Oraclize's approach to ensuring the trustworthiness of the data it provides to smart contracts.

Oraclize also employs a number of cryptographic techniques to ensure the authenticity and integrity of the data it delivers to smart contracts. For example, it can use digital signatures to sign the data it provides, allowing smart contracts to verify that the data has not been tampered with. Oraclize can also use cryptographic hashes to ensure the integrity of the data, allowing smart contracts to confirm that the data has not been modified in transit.

Digital signatures and cryptographic hashes are two important cryptographic techniques that Oraclize uses to ensure the authenticity and integrity of the data it provides to smart contracts

Digital signatures allow Oraclize to sign the data it provides, using a private key that is known only to Oraclize. The smart contract can then verify the signature using Oraclize's public key, which is publicly available. This allows the smart contract to trust that the data has not been tampered with, as any attempt to modify the data would cause the signature to become invalid.

Cryptographic hashes, on the other hand, allow Oraclize to ensure the integrity of the data. A cryptographic hash is a fixed-size value that is uniquely generated for a given piece of data. If the data is modified in any way, the hash value will change. Oraclize can use cryptographic hashes to ensure that the data it provides to smart contracts has not been modified in transit by including the hash value in the data it provides. The smart contract can then recalculate the hash value and compare it to the one provided by Oraclize to confirm that the data has not been modified.

Overall, the use of digital signatures and cryptographic hashes is an important part of Oraclize's approach to ensuring the trustworthiness of the data it provides to smart contracts.