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authorMichael Vogt <egon@debian-devbox>2012-04-16 19:24:07 +0200
committerMichael Vogt <egon@debian-devbox>2012-04-16 19:24:07 +0200
commit443f5e8a3205162ec6933529c5ca0c95ad3f6941 (patch)
tree3e2da22dcecc8eeaabc1ac5ceac0407a8e3cc25f /apt-pkg/contrib/sha2.h
parent96273866174c54bdb25813633891f29668d43848 (diff)
parentf352743312edeebf666e1c8304cdc4baf457469f (diff)
merge from the expermental2 branch
Diffstat (limited to 'apt-pkg/contrib/sha2.h')
-rw-r--r--apt-pkg/contrib/sha2.h103
1 files changed, 103 insertions, 0 deletions
diff --git a/apt-pkg/contrib/sha2.h b/apt-pkg/contrib/sha2.h
new file mode 100644
index 000000000..51c921dbd
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+++ b/apt-pkg/contrib/sha2.h
@@ -0,0 +1,103 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: sha512.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
+/* ######################################################################
+
+ SHA{512,256}SumValue - Storage for a SHA-{512,256} hash.
+ SHA{512,256}Summation - SHA-{512,256} Secure Hash Algorithm.
+
+ This is a C++ interface to a set of SHA{512,256}Sum functions, that mirrors
+ the equivalent MD5 & SHA1 classes.
+
+ ##################################################################### */
+ /*}}}*/
+#ifndef APTPKG_SHA2_H
+#define APTPKG_SHA2_H
+
+#include <string>
+#include <cstring>
+#include <algorithm>
+#include <stdint.h>
+
+#include "sha2_internal.h"
+#include "hashsum_template.h"
+
+typedef HashSumValue<512> SHA512SumValue;
+typedef HashSumValue<256> SHA256SumValue;
+
+class SHA2SummationBase : public SummationImplementation
+{
+ protected:
+ bool Done;
+ public:
+ bool Add(const unsigned char *inbuf, unsigned long long len) = 0;
+
+ void Result();
+};
+
+class SHA256Summation : public SHA2SummationBase
+{
+ SHA256_CTX ctx;
+ unsigned char Sum[32];
+
+ public:
+ bool Add(const unsigned char *inbuf, unsigned long long len)
+ {
+ if (Done)
+ return false;
+ SHA256_Update(&ctx, inbuf, len);
+ return true;
+ };
+ using SummationImplementation::Add;
+
+ SHA256SumValue Result()
+ {
+ if (!Done) {
+ SHA256_Final(Sum, &ctx);
+ Done = true;
+ }
+ SHA256SumValue res;
+ res.Set(Sum);
+ return res;
+ };
+ SHA256Summation()
+ {
+ SHA256_Init(&ctx);
+ Done = false;
+ };
+};
+
+class SHA512Summation : public SHA2SummationBase
+{
+ SHA512_CTX ctx;
+ unsigned char Sum[64];
+
+ public:
+ bool Add(const unsigned char *inbuf, unsigned long long len)
+ {
+ if (Done)
+ return false;
+ SHA512_Update(&ctx, inbuf, len);
+ return true;
+ };
+ using SummationImplementation::Add;
+
+ SHA512SumValue Result()
+ {
+ if (!Done) {
+ SHA512_Final(Sum, &ctx);
+ Done = true;
+ }
+ SHA512SumValue res;
+ res.Set(Sum);
+ return res;
+ };
+ SHA512Summation()
+ {
+ SHA512_Init(&ctx);
+ Done = false;
+ };
+};
+
+
+#endif