Refactor: Extract some general code for asymmetric algorithms from RSA files.

content/child/webcrypto/openssl/util_openssl.h

Index: content/child/webcrypto/openssl/util_openssl.h
diff --git a/content/child/webcrypto/openssl/util_openssl.h b/content/child/webcrypto/openssl/util_openssl.h
index 49277fdedd49c6ef173ba8f76aa0a4879563410b..1dfc9dbb21577a73d51cd59823c36e0739de5809 100644
--- a/content/child/webcrypto/openssl/util_openssl.h
+++ b/content/child/webcrypto/openssl/util_openssl.h
@@ -9,6 +9,7 @@
 
 #include <openssl/ossl_typ.h>
 
+#include "crypto/scoped_openssl_types.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
 
@@ -38,6 +39,40 @@ Status AeadEncryptDecrypt(EncryptOrDecrypt mode,
                           const EVP_AEAD* aead_alg,
                           std::vector<uint8_t>* buffer);
 
+// Creates a WebCrypto public key given an EVP_PKEY. This step includes
+// exporting the key to SPKI format, for use by serialization later.
+Status CreateWebCryptoPublicKey(
+    crypto::ScopedEVP_PKEY public_key,
+    const blink::WebCryptoKeyAlgorithm& algorithm,
+    bool extractable,
+    blink::WebCryptoKeyUsageMask usages,
+    blink::WebCryptoKey* key);
+
+// Creates a WebCrypto private key given an EVP_PKEY. This step includes
+// exporting the key to PKCS8 format, for use by serialization later.
+Status CreateWebCryptoPrivateKey(
+    crypto::ScopedEVP_PKEY private_key,
+    const blink::WebCryptoKeyAlgorithm& algorithm,
+    bool extractable,
+    blink::WebCryptoKeyUsageMask usages,
+    blink::WebCryptoKey* key);
+
+// Imports SPKI bytes to an EVP_PKEY for a public key. The resulting asymmetric
+// key may be invalid, and should be verified using something like
+// RSA_check_key(). The only validation performed by this function is to ensure
+// the key type matched |expected_pkey_id|.
+Status ImportUnverifiedPkeyFromSpki(const CryptoData& key_data,
+                                    int expected_pkey_id,
+                                    crypto::ScopedEVP_PKEY* pkey);
+
+// Imports PKCS8 bytes to an EVP_PKEY for a private key. The resulting
+// asymmetric key may be invalid, and should be verified using something like
+// RSA_check_key(). The only validation performed by this function is to ensure
+// the key type matched |expected_pkey_id|.
+Status ImportUnverifiedPkeyFromPkcs8(const CryptoData& key_data,
+                                     int expected_pkey_id,
+                                     crypto::ScopedEVP_PKEY* pkey);
+
 }  // namespace webcrypto
 
 }  // namespace content