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Add Cdm support for Cast provision 4.0 flow

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Bug: 259455235
Test: CorePIGTest.CastReceiverProvisioning*
Merged from https://widevine-internal-review.googlesource.com/174150

Change-Id: I8d546a73a64a71a4d61225d9c6d14d893decce22
This commit is contained in:
Kyle Zhang
2023-07-07 20:28:37 +00:00
committed by Robert Shih
parent f6c1879b4c
commit c600ccb741
4 changed files with 128 additions and 23 deletions
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23
libwvdrmengine/cdm/core/src/license_protocol.proto
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@@ -1030,6 +1030,14 @@ message SignedProvisioningMessage {
INTEL_SIGMA_210 = 210; // Intel Sigma 2.1.0 protocol.
}
// Used by provisioning 4.0 to deliver cast certificates in which the server
// delivers a new rsa private key that must be encrypted and signed.
enum SessionKeyType {
UNDEFINED = 0;
WRAPPED_AES_KEY = 1;
EPHEMERAL_ECC_PUBLIC_KEY = 2;
}
// Serialized protobuf message for the corresponding protocol and stage of
// the provisioning exchange. ProvisioningRequest or ProvisioningResponse
// in the case of Provisioning 2.0, 3.0, 4.0 and ARCPP_PROVISIONING. Required.
@@ -1056,6 +1064,21 @@ message SignedProvisioningMessage {
optional HashAlgorithmProto hash_algorithm = 7;
// Indicates which version of the protocol is in use.
optional ProvisioningProtocolVersion protocol_version = 8;
// If populated, the contents of this field will be signaled by the
// |session_key_type| type. If the |session_key_type| is WRAPPED_AES_KEY the
// key is the bytes of an encrypted AES key. If the |session_key_type| is
// EPHEMERAL_ECC_PUBLIC_KEY the field contains the bytes of an RFC5208 ASN1
// serialized ECC public key.
// This field is only required to be set in a success response to
// Provisioning 4.0 X509 (cast) certificate request.
optional bytes session_key = 9;
// Optional field that contains the algorithm type used to generate the
// session_key and signature in a ProvisioningResponse message. This value is
// populated in a success response to a request for a X509 (cast) certificate.
// The value used depends on the key type of the PublicKeyToCertify contained
// in Provisioning 4.0 ProvisioningMessage.
// This value must be populated if session_key is populated.
optional SessionKeyType session_key_type = 10;
}
// ----------------------------------------------------------------------------