Crypto modularity proj: Separate files under crypto directory based on their functionality. Move Kerberos specific files into krb subdir and MIT specific - into builtin subdir. Place all tests into crypto_tests subfolder.

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git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@22477 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 67 insertions, 0 deletions

diff --git a/src/lib/crypto/krb/decrypt.c b/src/lib/crypto/krb/decrypt.c
new file mode 100644
index 000000000..74c38f6aa
--- /dev/null
+++ b/src/lib/crypto/krb/decrypt.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 1998 by the FundsXpress, INC.
+ * 
+ * All rights reserved.
+ * 
+ * Export of this software from the United States of America may require
+ * a specific license from the United States Government.  It is the
+ * responsibility of any person or organization contemplating export to
+ * obtain such a license before exporting.
+ * 
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of FundsXpress. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  FundsXpress makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ * 
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include "k5-int.h"
+#include "etypes.h"
+#include "aead.h"
+
+krb5_error_code KRB5_CALLCONV
+krb5_c_decrypt(krb5_context context, const krb5_keyblock *key,
+	       krb5_keyusage usage, const krb5_data *ivec,
+	       const krb5_enc_data *input, krb5_data *output)
+{
+    int i;
+
+    for (i=0; i<krb5_enctypes_length; i++) {
+	if (krb5_enctypes_list[i].etype == key->enctype)
+	    break;
+    }
+
+    if (i == krb5_enctypes_length) {
+	krb5int_set_error(&context->err, KRB5_BAD_ENCTYPE,
+			  "Bad encryption type (type %d unknown)",
+			  key->enctype);
+	return(KRB5_BAD_ENCTYPE);
+    }
+
+    if ((input->enctype != ENCTYPE_UNKNOWN) &&
+	(krb5_enctypes_list[i].etype != input->enctype))
+	return(KRB5_BAD_ENCTYPE);
+
+    if (krb5_enctypes_list[i].decrypt == NULL) {
+	assert(krb5_enctypes_list[i].aead != NULL);
+
+	return krb5int_c_decrypt_aead_compat(krb5_enctypes_list[i].aead,
+					     krb5_enctypes_list[i].enc,
+					     krb5_enctypes_list[i].hash,
+					     key, usage, ivec,
+					     &input->ciphertext, output);
+    }
+
+    return((*(krb5_enctypes_list[i].decrypt))
+	   (krb5_enctypes_list[i].enc, krb5_enctypes_list[i].hash,
+	    key, usage, ivec, &input->ciphertext, output));
+}