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Unified Diff: Source/platform/exported/WebCryptoAlgorithm.cpp

Issue 312393004: Expose WebCrypto's lookupAlgorithmInfo. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@share_normalize
Patch Set: Addressed comment (removed redundant idToName). Created 6 years, 6 months ago
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Index: Source/platform/exported/WebCryptoAlgorithm.cpp
diff --git a/Source/platform/exported/WebCryptoAlgorithm.cpp b/Source/platform/exported/WebCryptoAlgorithm.cpp
index 024b9701c8d97d5e7f2338340f7fe574d1b3ab60..1b9504e83dae5d3c5ecbf68b22cb99e0bcc2d98f 100644
--- a/Source/platform/exported/WebCryptoAlgorithm.cpp
+++ b/Source/platform/exported/WebCryptoAlgorithm.cpp
@@ -32,11 +32,193 @@
#include "public/platform/WebCryptoAlgorithm.h"
#include "public/platform/WebCryptoAlgorithmParams.h"
+#include "wtf/Assertions.h"
#include "wtf/OwnPtr.h"
+#include "wtf/StdLibExtras.h"
#include "wtf/ThreadSafeRefCounted.h"
namespace blink {
+namespace {
+
+// A mapping from the algorithm ID to information about the algorithm.
+const WebCryptoAlgorithmInfo algorithmIdToInfo[] = {
+ { // Index 0
+ "AES-CBC", {
+ WebCryptoAlgorithmParamsTypeAesCbcParams, // Encrypt
+ WebCryptoAlgorithmParamsTypeAesCbcParams, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeNone, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmParamsTypeAesCbcParams, // WrapKey
+ WebCryptoAlgorithmParamsTypeAesCbcParams // UnwrapKey
+ }
+ }, { // Index 1
+ "HMAC", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmParamsTypeNone, // Sign
+ WebCryptoAlgorithmParamsTypeNone, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeHmacKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeHmacImportParams, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmInfo::Undefined, // WrapKey
+ WebCryptoAlgorithmInfo::Undefined // UnwrapKey
+ }
+ }, { // Index 2
+ "RSASSA-PKCS1-v1_5", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmParamsTypeNone, // Sign
+ WebCryptoAlgorithmParamsTypeNone, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeRsaHashedImportParams, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmInfo::Undefined, // WrapKey
+ WebCryptoAlgorithmInfo::Undefined // UnwrapKey
+ }
+ }, { // Index 3
+ "SHA-1", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmParamsTypeNone, // Digest
+ WebCryptoAlgorithmInfo::Undefined, // GenerateKey
+ WebCryptoAlgorithmInfo::Undefined, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmInfo::Undefined, // WrapKey
+ WebCryptoAlgorithmInfo::Undefined // UnwrapKey
+ }
+ }, { // Index 4
+ "SHA-256", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmParamsTypeNone, // Digest
+ WebCryptoAlgorithmInfo::Undefined, // GenerateKey
+ WebCryptoAlgorithmInfo::Undefined, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmInfo::Undefined, // WrapKey
+ WebCryptoAlgorithmInfo::Undefined // UnwrapKey
+ }
+ }, { // Index 5
+ "SHA-384", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmParamsTypeNone, // Digest
+ WebCryptoAlgorithmInfo::Undefined, // GenerateKey
+ WebCryptoAlgorithmInfo::Undefined, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmInfo::Undefined, // WrapKey
+ WebCryptoAlgorithmInfo::Undefined // UnwrapKey
+ }
+ }, { // Index 6
+ "SHA-512", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmParamsTypeNone, // Digest
+ WebCryptoAlgorithmInfo::Undefined, // GenerateKey
+ WebCryptoAlgorithmInfo::Undefined, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmInfo::Undefined, // WrapKey
+ WebCryptoAlgorithmInfo::Undefined // UnwrapKey
+ }
+ }, { // Index 7
+ "AES-GCM", {
+ WebCryptoAlgorithmParamsTypeAesGcmParams, // Encrypt
+ WebCryptoAlgorithmParamsTypeAesGcmParams, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeNone, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmParamsTypeAesGcmParams, // WrapKey
+ WebCryptoAlgorithmParamsTypeAesGcmParams // UnwrapKey
+ }
+ }, { // Index 8
+ "RSA-OAEP", {
+ WebCryptoAlgorithmParamsTypeRsaOaepParams, // Encrypt
+ WebCryptoAlgorithmParamsTypeRsaOaepParams, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeRsaHashedImportParams, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmParamsTypeRsaOaepParams, // WrapKey
+ WebCryptoAlgorithmParamsTypeRsaOaepParams // UnwrapKey
+ }
+ }, { // Index 9
+ "AES-CTR", {
+ WebCryptoAlgorithmParamsTypeAesCtrParams, // Encrypt
+ WebCryptoAlgorithmParamsTypeAesCtrParams, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeNone, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmParamsTypeAesCtrParams, // WrapKey
+ WebCryptoAlgorithmParamsTypeAesCtrParams // UnwrapKey
+ }
+ }, { // Index 10
+ "AES-KW", {
+ WebCryptoAlgorithmInfo::Undefined, // Encrypt
+ WebCryptoAlgorithmInfo::Undefined, // Decrypt
+ WebCryptoAlgorithmInfo::Undefined, // Sign
+ WebCryptoAlgorithmInfo::Undefined, // Verify
+ WebCryptoAlgorithmInfo::Undefined, // Digest
+ WebCryptoAlgorithmParamsTypeAesKeyGenParams, // GenerateKey
+ WebCryptoAlgorithmParamsTypeNone, // ImportKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveKey
+ WebCryptoAlgorithmInfo::Undefined, // DeriveBits
+ WebCryptoAlgorithmParamsTypeNone, // WrapKey
+ WebCryptoAlgorithmParamsTypeNone // UnwrapKey
+ }
+ },
+};
+
+// Initializing the algorithmIdToInfo table above depends on knowing the enum
+// values for algorithm IDs. If those ever change, the table will need to be
+// updated.
+COMPILE_ASSERT(WebCryptoAlgorithmIdAesCbc == 0, AesCbc_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdHmac == 1, Hmac_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 == 2, RsaSsaPkcs1v1_5_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdSha1 == 3, Sha1_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdSha256 == 4, Sha256_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdSha384 == 5, Sha384_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdSha512 == 6, Sha512_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdAesGcm == 7, AesGcm_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdRsaOaep == 8, RsaOaep_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdAesCtr == 9, AesCtr_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdAesKw == 10, AesKw_idDoesntMatch);
+COMPILE_ASSERT(WebCryptoAlgorithmIdLast == 10, Last_idDoesntMatch);
+COMPILE_ASSERT(10 == WebCryptoOperationLast, UpdateParamsMapping);
+
+} // namespace
+
class WebCryptoAlgorithmPrivate : public ThreadSafeRefCounted<WebCryptoAlgorithmPrivate> {
public:
WebCryptoAlgorithmPrivate(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoAlgorithmParams> params)
@@ -64,6 +246,13 @@ WebCryptoAlgorithm WebCryptoAlgorithm::adoptParamsAndCreate(WebCryptoAlgorithmId
return WebCryptoAlgorithm(id, adoptPtr(params));
}
+const WebCryptoAlgorithmInfo* WebCryptoAlgorithm::lookupAlgorithmInfo(WebCryptoAlgorithmId id)
+{
+ if (id < 0 || id >= WTF_ARRAY_LENGTH(algorithmIdToInfo))
+ return 0;
+ return &algorithmIdToInfo[id];
+}
+
bool WebCryptoAlgorithm::isNull() const
{
return m_private.isNull();
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