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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/reporting/encryption/verification.h"
#include "components/reporting/encryption/primitives.h"
#include "components/reporting/util/status.h"
namespace reporting {
namespace {
// Well-known public signature verification keys.
constexpr uint8_t kProdVerificationKey[kKeySize] = {
0x51, 0x2D, 0x53, 0xA3, 0xF5, 0xEB, 0x01, 0xCE, 0xDA, 0xFC, 0x8E,
0x79, 0xE7, 0x0F, 0xE1, 0x65, 0xDC, 0x14, 0x86, 0x53, 0x8B, 0x97,
0x5A, 0x2D, 0x70, 0x08, 0xCB, 0xCA, 0x60, 0xC3, 0x55, 0xE6};
constexpr uint8_t kDevVerificationKey[kKeySize] = {
0xC6, 0x2C, 0x4D, 0x25, 0x9E, 0x3E, 0x99, 0xA0, 0x2E, 0x08, 0x15,
0x8C, 0x38, 0xB7, 0x6C, 0x08, 0xDF, 0xE7, 0x6E, 0x3A, 0xD6, 0x5A,
0xC5, 0x58, 0x09, 0xE4, 0xAB, 0x89, 0x3A, 0x31, 0x53, 0x07};
} // namespace
// static
base::StringPiece SignatureVerifier::VerificationKey() {
return base::StringPiece(reinterpret_cast<const char*>(kProdVerificationKey),
kKeySize);
}
// static
base::StringPiece SignatureVerifier::VerificationKeyDev() {
return base::StringPiece(reinterpret_cast<const char*>(kDevVerificationKey),
kKeySize);
}
SignatureVerifier::SignatureVerifier(base::StringPiece verification_public_key)
: verification_public_key_(verification_public_key) {}
Status SignatureVerifier::Verify(base::StringPiece message,
base::StringPiece signature) {
if (signature.size() != kSignatureSize) {
return Status{error::FAILED_PRECONDITION, "Wrong signature size"};
}
if (verification_public_key_.size() != kKeySize) {
return Status{error::FAILED_PRECONDITION, "Wrong public key size"};
}
if (!VerifySignature(
reinterpret_cast<const uint8_t*>(verification_public_key_.data()),
message, reinterpret_cast<const uint8_t*>(signature.data()))) {
return Status{error::INVALID_ARGUMENT, "Verification failed"};
}
return Status::StatusOK();
}
} // namespace reporting
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