Create
Specification¶
This operation requests the server to generate a new symmetric key or generate Secret Data as a Managed Cryptographic Object.
The request contains information about the type of object being created, and some of the attributes to be assigned to the object (e.g., Cryptographic Algorithm, Cryptographic Length, etc.).
The response contains the Unique Identifier of the created object. The server SHALL copy the Unique Identifier returned in this operation into the ID Placeholder variable.
Implementation¶
This operation can be used to create a new symmetric key or a new Covercrypt user decryption key.
Example - Symmetric Key¶
Creating a 256 bit AES Symmetric Key with the tag MySymmetricKey.
The tags are assembled in a JSON array and encoded in hex.
The CryptographicUsageMask is optional.
Corresponding Cosmian CLI command:
{
"tag": "Create",
"type": "Structure",
"value": [
{
"tag": "ObjectType",
"type": "Enumeration",
"value": "SymmetricKey"
},
{
"tag": "Attributes",
"type": "Structure",
"value": [
{
"tag": "CryptographicAlgorithm",
"type": "Enumeration",
"value": "AES"
},
{
"tag": "CryptographicLength",
"type": "Integer",
"value": 256
},
{
"tag": "CryptographicUsageMask",
"type": "Integer",
"value": 2108
},
{
"tag": "KeyFormatType",
"type": "Enumeration",
"value": "TransparentSymmetricKey"
},
{
"tag": "ObjectType",
"type": "Enumeration",
"value": "SymmetricKey"
},
{
"tag": "VendorAttributes",
"type": "Structure",
"value": [
{
"tag": "VendorAttributes",
"type": "Structure",
"value": [
{
"tag": "VendorIdentification",
"type": "TextString",
"value": "cosmian"
},
{
"tag": "AttributeName",
"type": "TextString",
"value": "tag"
},
{
"tag": "AttributeValue",
"type": "ByteString",
// ["MySymmetricKey"] in hex
"value": "5B224D7953796D6D65747269634B6579225D"
}
]
}
]
}
]
}
]
}
Example - Covercrypt User Decryption Key¶
Creating a Covercrypt User Decryption Key with the tag MyUserKey and the access policy Security Level::Confidential && (Department::FIN || Department::HR)
(see Create Key Pair for the corresponding master key policy).
Corresponding Cosmian CLI command:
cosmian kms cc keys create-user-key -t "MyUserKey"\
b652a48a-a48c-4dc1-bd7e-cf0e5126b7b9 \
"Security Level::Confidential && (Department::FIN || Department::HR)"
Please note:
- The tag(s) is (are) assembled in a JSON array and encoded in hex.
- The access policy is encoded in hex.
{
"tag": "Create",
"type": "Structure",
"value": [
{
"tag": "ObjectType",
"type": "Enumeration",
"value": "PrivateKey"
},
{
"tag": "Attributes",
"type": "Structure",
"value": [
{
"tag": "CryptographicAlgorithm",
"type": "Enumeration",
"value": "CoverCrypt"
},
{
"tag": "KeyFormatType",
"type": "Enumeration",
"value": "CoverCryptSecretKey"
},
{
"tag": "Link",
"type": "Structure",
"value": [
{
"tag": "Link",
"type": "Structure",
"value": [
{
"tag": "LinkType",
"type": "Enumeration",
"value": "ParentLink"
},
{
"tag": "LinkedObjectIdentifier",
"type": "TextString",
// the master secret key unique identifier
"value": "b652a48a-a48c-4dc1-bd7e-cf0e5126b7b9"
}
]
}
]
},
{
"tag": "ObjectType",
"type": "Enumeration",
"value": "PrivateKey"
},
{
"tag": "VendorAttributes",
"type": "Structure",
"value": [
{
"tag": "VendorAttributes",
"type": "Structure",
"value": [
{
"tag": "VendorIdentification",
"type": "TextString",
"value": "cosmian"
},
{
"tag": "AttributeName",
"type": "TextString",
"value": "cover_crypt_access_policy"
},
{
"tag": "AttributeValue",
"type": "ByteString",
// Security Level::Confidential && (Department::FIN || Department::HR) in hex
"value": "5365637572697479204C6576656C3A3A436F6E666964656E7469616C20262620284465706172746D656E743A3A46494E207C7C204465706172746D656E743A3A485229"
}
]
},
{
"tag": "VendorAttributes",
"type": "Structure",
"value": [
{
"tag": "VendorIdentification",
"type": "TextString",
"value": "cosmian"
},
{
"tag": "AttributeName",
"type": "TextString",
"value": "tag"
},
{
"tag": "AttributeValue",
"type": "ByteString",
// ["MyUserKey"] in hex
"value": "5B224D79557365724B6579225D"
}
]
}
]
}
]
}
]
}