ISO 17068:2017规定了对可信第三方存储库（TTPR）的要求，以支持授权托管服务，以保护客户数字记录的可证明完整性和真实性，并作为可靠证据的来源。 ISO 17068:2017适用于私人和公共部门法律义务保留期内作为证据来源的数字记录的保留或存储服务。 ISO 17068:2017的限制是，存储记录的授权保管仅限于TTPR和客户之间。

ISO 17068:2017 specifies requirements for a trusted third party repository (TTPR) to support the authorized custody service in order to safeguard provable integrity and authenticity of clients' digital records and serve as a source of reliable evidence. ISO 17068:2017 is applicable to retention or repository services for digital records as a source of evidence during the retention periods of legal obligation in both the private and the public sectors. ISO 17068:2017 has the limitation that the authorized custody of the stored records is between only the TTPR and the client.