The invention relates to a sensitive data cross-network
authorization application method based on trusted
digital identity, which comprises the following steps that: a user initiates an
authorization request through
terminal equipment, and a trusted
digital identity platform generates a trusted
digital identity label and a unique
authorization serial number after trusted digital identity
authentication verification is carried out through a CTID platform; the trusted digital identity platform calls a special
encryption machine program to encrypt the sensitive data, generates an authorization data
ciphertext, packages the authorization data
ciphertext together with an authorization validity period, a trusted digital identity identifier and a signature value into an authorization data packet, and transmits the authorization data packet to a target
system for storage through a file switch and a security isolation gatekeeper; when a
user needs to use data, a trusted digital identity two-dimensional code containing a trusted digital identity identifier and an authorization serial number is generated, a target
system scans the code, verifies the signature, decrypts, obtains decrypted data, inquires a user authorization data packet, verifies the signature and verifies the validity period, and decrypts the sensitive data
ciphertext if the
verification is passed. According to the invention, the
data security, the use efficiency and the user experience are improved.