add circuitpython code

1 files changed, 77 insertions, 0 deletions

diff --git a/circuitpython/lib/axtls/crypto/sha384.c b/circuitpython/lib/axtls/crypto/sha384.c
new file mode 100644
index 0000000..f1071be
--- /dev/null
+++ b/circuitpython/lib/axtls/crypto/sha384.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2015, Cameron Rich
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution.
+ * * Neither the name of the axTLS project nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this software 
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include "os_port.h"
+#include "crypto.h"
+ 
+/**
+* Initialize the SHA384 context 
+*/
+ void SHA384_Init(SHA384_CTX *ctx)
+ {
+    //Set initial hash value
+    ctx->h_dig.h[0] = 0xCBBB9D5DC1059ED8LL;
+    ctx->h_dig.h[1] = 0x629A292A367CD507LL;
+    ctx->h_dig.h[2] = 0x9159015A3070DD17LL;
+    ctx->h_dig.h[3] = 0x152FECD8F70E5939LL;
+    ctx->h_dig.h[4] = 0x67332667FFC00B31LL;
+    ctx->h_dig.h[5] = 0x8EB44A8768581511LL;
+    ctx->h_dig.h[6] = 0xDB0C2E0D64F98FA7LL;
+    ctx->h_dig.h[7] = 0x47B5481DBEFA4FA4LL;
+ 
+    // Number of bytes in the buffer
+    ctx->size = 0;
+    // Total length of the message
+    ctx->totalSize = 0;
+ }
+ 
+/**
+* Accepts an array of octets as the next portion of the message.
+*/
+void SHA384_Update(SHA384_CTX *ctx, const uint8_t * msg, int len)
+{
+    // The function is defined in the exact same manner as SHA-512
+    SHA512_Update(ctx, msg, len);
+}
+ 
+/**
+* Return the 384-bit message digest into the user's array
+*/
+void SHA384_Final(uint8_t *digest, SHA384_CTX *ctx)
+{
+    // The function is defined in the exact same manner as SHA-512
+    SHA512_Final(NULL, ctx);
+ 
+    // Copy the resulting digest
+    if (digest != NULL)
+        memcpy(digest, ctx->h_dig.digest, SHA384_SIZE);
+}
+