Abstract: Systems and methods are disclosed for validating an instruction using one or more digital signatures. A processor receives an instruction to initiate a transaction and generates one or more digital certificates corresponding to multiple attestations. The system validates one or more policy limits, signs the instruction using a first subset of the certificates, and instantiates an instruction workflow. Upon completion of the workflow, the instruction or workflow is signed using a second subset of the certificates. A transaction request is then built including the instruction and one or more digital signatures, which may comprise a combined or aggregated digital signature derived from multiple individual signatures.

Abstract: Systems and methods for validating an instruction with multiple digital signatures may receive an instruction to initiate a transaction; generate first and second digital certificates; validate a set of one or more policy limits; sign the instruction using the first digital certificate, based on the validating; instantiate an instruction workflow associated with the transaction; sign the instruction workflow using the second digital certificate, based on completion of the instruction workflow; build a transaction request, in which the transaction request includes at least the instruction, the first signature, and the second signature; verify the first and second signatures; and sign the transaction request.

Abstract: Systems and methods for providing multiple key encryption may generate a private key encryption key (KEK) and a corresponding public KEK in a trusted execution environment (TEE); provide the public KEK to a key generator; generate, by the key generator, a data encryption key (DEK) and encrypt the DEK with the public KEK; obtain, by a key processor, an ephemeral public key and the encrypted DEK, and send the ephemeral public key and the encrypted DEK to the TEE; decrypt, by the TEE, the encrypted DEK using the private KEK, and re-encrypt the decrypted DEK with the ephemeral public key; obtain, by the key processor, the re-encrypted DEK from the TEE and pass the re-encrypted DEK to a signing service; decrypt, by the signing service, the re-encrypted DEK using a corresponding ephemeral private key; and encrypt, by the signing service, data using the DEK.