Patent ID: 9680638
Date: 2017-06-13
CPC Classifications: H04L

Claim:
1. A first computing entity, for building a non-alterable structure, configured to: select business data relative to an intended use of a set of cryptographic material, said business data having a functional link with the set of cryptographic material, said cryptographic material being generated randomly or derived from a secret key, said secret key being linked to a business use; encrypt a protection key with an encryption/decryption key, encrypt the set of cryptographic material with the protection key, sign the set of cryptographic material, the protection key and the business data relative to the intended use of cryptographic material with a signature key, and transmit the non-alterable structure to a second computing entity that shares at least the encryption/decryption key and a signature key with the first computing entity, for performing cryptographic operations, said transmitted non-alterable structure including (i) the selected business data, said selected business data being in non-encrypted form, (ii) the encrypted protection key, (iii) the encrypted set of cryptographic material, and (iv) the signature of the set of cryptographic material, the protection key and the business data relative to the intended use of cryptographic material signed with the signature key.