2afe783ce0
Merge from widevine of http://go/wvgerrit/23042 This updates unit tests to account for key control block changes for OEMCrypto v13. There are two new bits, restricting SRM version and restricting analog output. The verification string is also updated. Part of this is to include some simple unit tests for the SRM functions. b/33815454 b/28955520 Change-Id: I7cc2ce508688fded2b67fc2a4379c7a8d59d8d22
115 lines
4.3 KiB
C++
115 lines
4.3 KiB
C++
// Copyright 2013 Google Inc. All Rights Reserved.
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//
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// Mock implementation of OEMCrypto APIs
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//
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#include "oemcrypto_key_mock.h"
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#include <string.h>
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#include <vector>
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#include "log.h"
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#include "oemcrypto_logging.h"
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#include "wv_cdm_constants.h"
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namespace wvoec_mock {
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bool KeyControlBlock::Validate() {
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if (memcmp(verification_, "kctl", 4) && // original verification
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memcmp(verification_, "kc09", 4) && // add in version 9 api
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memcmp(verification_, "kc10", 4) && // add in version 10 api
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memcmp(verification_, "kc11", 4) && // add in version 11 api
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memcmp(verification_, "kc12", 4) && // add in version 11 api
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memcmp(verification_, "kc13", 4)) { // add in version 13 api
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LOGE("KCB: BAD verification string: %4.4s", verification_);
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valid_ = false;
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} else {
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valid_ = true;
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}
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return valid_;
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}
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// This extracts 4 bytes in network byte order to a 32 bit integer in
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// host byte order.
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uint32_t KeyControlBlock::ExtractField(const std::vector<uint8_t>& str,
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int idx) {
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int bidx = idx * 4;
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uint32_t t = static_cast<unsigned char>(str[bidx]) << 24;
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t |= static_cast<unsigned char>(str[bidx + 1]) << 16;
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t |= static_cast<unsigned char>(str[bidx + 2]) << 8;
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t |= static_cast<unsigned char>(str[bidx + 3]);
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return t;
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}
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KeyControlBlock::KeyControlBlock(
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const std::vector<uint8_t>& key_control_string) {
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if (key_control_string.size() < wvcdm::KEY_CONTROL_SIZE) {
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LOGE("KCB: BAD Size: %d (not %d)", key_control_string.size(),
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wvcdm::KEY_CONTROL_SIZE);
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return;
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}
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memcpy(verification_, &key_control_string[0], 4);
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duration_ = ExtractField(key_control_string, 1);
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nonce_ = ExtractField(key_control_string, 2);
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control_bits_ = ExtractField(key_control_string, 3);
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if (LogCategoryEnabled(kLoggingDumpKeyControlBlocks)) {
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LOGD("KCB:");
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LOGD(" valid: %d", valid());
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LOGD(" duration: %d", duration());
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LOGD(" nonce: %08X", nonce());
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LOGD(" magic: %08X", verification());
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LOGD(" bits: %08X", control_bits());
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LOGD(" bit kControlSRMVersionRequired %s.",
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(control_bits() & kControlSRMVersionRequired) ? "set" : "unset");
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LOGD(" bit kControlDisableAnalogOutput %s.",
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(control_bits() & kControlDisableAnalogOutput) ? "set" : "unset");
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LOGD(" bits kControlSecurityPatchLevel 0x%02x.",
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(control_bits() & kControlSecurityPatchLevelMask)
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>> kControlSecurityPatchLevelShift);
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switch (control_bits() & kControlReplayMask) {
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case kControlNonceRequired:
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LOGD(" bits kControlReplay kControlNonceRequired.");
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break;
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case kControlNonceOrEntry:
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LOGD(" bits kControlReplay kControlNonceOrEntry.");
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break;
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default:
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LOGD(" bits kControlReplay unset.");
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break;
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}
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LOGD(" bits kControlHDCPVersion 0x%02x.",
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(control_bits() & kControlHDCPVersionMask)
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>> kControlHDCPVersionShift);
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LOGD(" bit kControlAllowEncrypt %s.",
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(control_bits() & kControlAllowEncrypt) ? "set" : "unset");
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LOGD(" bit kControlAllowDecrypt %s.",
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(control_bits() & kControlAllowDecrypt) ? "set" : "unset");
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LOGD(" bit kControlAllowSign %s.",
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(control_bits() & kControlAllowSign) ? "set" : "unset");
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LOGD(" bit kControlAllowVerify %s.",
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(control_bits() & kControlAllowVerify) ? "set" : "unset");
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LOGD(" bit kControlObserveDataPath %s.",
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(control_bits() & kControlObserveDataPath) ? "set" : "unset");
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LOGD(" bit kControlObserveHDCP %s.",
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(control_bits() & kControlObserveHDCP) ? "set" : "unset");
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LOGD(" bit kControlObserveCGMS %s.",
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(control_bits() & kControlObserveCGMS) ? "set" : "unset");
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LOGD(" bit kControlDataPathSecure %s.",
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(control_bits() & kControlDataPathSecure) ? "set" : "unset");
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LOGD(" bit kControlNonceEnabled %s.",
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(control_bits() & kControlNonceEnabled) ? "set" : "unset");
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LOGD(" bit kControlHDCPRequired %s.",
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(control_bits() & kControlHDCPRequired) ? "set" : "unset");
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uint32_t cgms_bits = control_bits() & 0x3;
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const char* cgms_values[4] = {"free", "BAD", "once", "never"};
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LOGD(" CGMS = %s", cgms_values[cgms_bits]);
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}
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Validate();
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}
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void Key::UpdateDuration(const KeyControlBlock& control) {
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control_.set_duration(control.duration());
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}
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} // namespace wvoec_mock
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