[crypto] Split crypto_algorithm into {digest,cipher,pubkey}_algorithm

The various types of cryptographic algorithm are fundamentally
different, and it was probably a mistake to try to handle them via a
single common type.

pubkey_algorithm is a placeholder type for now.

1 files changed, 39 insertions, 23 deletions

diff --git a/src/crypto/crypto_null.c b/src/crypto/crypto_null.c
index 120ef0a6..8cc9217a 100644
--- a/src/crypto/crypto_null.c
+++ b/src/crypto/crypto_null.c
@@ -25,45 +25,61 @@
 #include <string.h>
 #include <gpxe/crypto.h>
 
-static void null_init ( void *ctx __unused ) {
+static void digest_null_init ( void *ctx __unused ) {
 	/* Do nothing */
 }
 
-static int null_setkey ( void *ctx __unused, const void *key __unused,
-			 size_t keylen __unused ) {
+static void digest_null_update ( void *ctx __unused, const void *src __unused,
+				 size_t len __unused ) {
 	/* Do nothing */
-	return 0;
 }
 
-static void null_setiv ( void *ctx __unused, const void *iv __unused ) {
+static void digest_null_final ( void *ctx __unused, void *out __unused ) {
 	/* Do nothing */
 }
 
-static void null_encode ( void *ctx __unused, const void *src,
-			  void *dst, size_t len ) {
-	if ( dst )
-		memcpy ( dst, src, len );
-}
+struct digest_algorithm digest_null = {
+	.name = "null",
+	.ctxsize = 0,
+	.blocksize = 1,
+	.digestsize = 0,
+	.init = digest_null_init,
+	.update = digest_null_update,
+	.final = digest_null_final,
+};
 
-static void null_decode ( void *ctx __unused, const void *src,
-			  void *dst, size_t len ) {
-	if ( dst )
-		memcpy ( dst, src, len );
+static int cipher_null_setkey ( void *ctx __unused, const void *key __unused,
+				size_t keylen __unused ) {
+	/* Do nothing */
+	return 0;
 }
 
-static void null_final ( void *ctx __unused, void *out __unused ) {
+static void cipher_null_setiv ( void *ctx __unused,
+				const void *iv __unused ) {
 	/* Do nothing */
 }
 
-struct crypto_algorithm crypto_null = {
+static void cipher_null_encrypt ( void *ctx __unused, const void *src,
+				  void *dst, size_t len ) {
+	memcpy ( dst, src, len );
+}
+
+static void cipher_null_decrypt ( void *ctx __unused, const void *src,
+				  void *dst, size_t len ) {
+	memcpy ( dst, src, len );
+}
+
+struct cipher_algorithm cipher_null = {
 	.name = "null",
 	.ctxsize = 0,
 	.blocksize = 1,
-	.digestsize = 0,
-	.init = null_init,
-	.setkey = null_setkey,
-	.setiv = null_setiv,
-	.encode = null_encode,
-	.decode = null_decode,
-	.final = null_final,
+	.setkey = cipher_null_setkey,
+	.setiv = cipher_null_setiv,
+	.encrypt = cipher_null_encrypt,
+	.decrypt = cipher_null_decrypt,
+};
+
+struct pubkey_algorithm pubkey_null = {
+	.name = "null",
+	.ctxsize = 0,
 };