Bitflash: fair-launch release

Satoshi's bitcoin-0.1.0 reborn with RandomX CPU proof of work, anonymous .btf
addressing over Nostr with CGNAT rendezvous, automatic peer discovery, a
headless Linux node, and Windows GUI wallet. Fair launch, no premine, 21M cap.

1 files changed, 177 insertions, 0 deletions

diff --git a/src/sha.h b/src/sha.h
new file mode 100644
index 0000000..e3af7b4
--- /dev/null
+++ b/src/sha.h
@@ -0,0 +1,177 @@
+// This file is public domain
+// SHA routines extracted as a standalone file from:
+// Crypto++: a C++ Class Library of Cryptographic Schemes
+// Version 5.5.2 (9/24/2007)
+// http://www.cryptopp.com
+#ifndef CRYPTOPP_SHA_H
+#define CRYPTOPP_SHA_H
+#include <stdlib.h>
+
+namespace CryptoPP
+{
+
+//
+// Dependencies
+//
+
+typedef unsigned char byte;
+typedef unsigned short word16;
+typedef unsigned int word32;
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+typedef unsigned __int64 word64;
+#else
+typedef unsigned long long word64;
+#endif
+
+template <class T> inline T rotlFixed(T x, unsigned int y)
+{
+    assert(y < sizeof(T)*8);
+    return T((x<<y) | (x>>(sizeof(T)*8-y)));
+}
+
+template <class T> inline T rotrFixed(T x, unsigned int y)
+{
+    assert(y < sizeof(T)*8);
+    return T((x>>y) | (x<<(sizeof(T)*8-y)));
+}
+
+// ************** endian reversal ***************
+
+#ifdef _MSC_VER
+    #if _MSC_VER >= 1400
+        #define CRYPTOPP_FAST_ROTATE(x) 1
+    #elif _MSC_VER >= 1300
+        #define CRYPTOPP_FAST_ROTATE(x) ((x) == 32 | (x) == 64)
+    #else
+        #define CRYPTOPP_FAST_ROTATE(x) ((x) == 32)
+    #endif
+#elif (defined(__MWERKS__) && TARGET_CPU_PPC) || \
+    (defined(__GNUC__) && (defined(_ARCH_PWR2) || defined(_ARCH_PWR) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || defined(_ARCH_COM)))
+    #define CRYPTOPP_FAST_ROTATE(x) ((x) == 32)
+#elif defined(__GNUC__) && (CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X86) // depend on GCC's peephole optimization to generate rotate instructions
+    #define CRYPTOPP_FAST_ROTATE(x) 1
+#else
+    #define CRYPTOPP_FAST_ROTATE(x) 0
+#endif
+
+inline byte ByteReverse(byte value)
+{
+    return value;
+}
+
+inline word16 ByteReverse(word16 value)
+{
+#ifdef CRYPTOPP_BYTESWAP_AVAILABLE
+    return bswap_16(value);
+#elif defined(_MSC_VER) && _MSC_VER >= 1300
+    return _byteswap_ushort(value);
+#else
+    return rotlFixed(value, 8U);
+#endif
+}
+
+inline word32 ByteReverse(word32 value)
+{
+#if defined(__GNUC__)
+    __asm__ ("bswap %0" : "=r" (value) : "0" (value));
+    return value;
+#elif defined(CRYPTOPP_BYTESWAP_AVAILABLE)
+    return bswap_32(value);
+#elif defined(__MWERKS__) && TARGET_CPU_PPC
+    return (word32)__lwbrx(&value,0);
+#elif _MSC_VER >= 1400 || (_MSC_VER >= 1300 && !defined(_DLL))
+    return _byteswap_ulong(value);
+#elif CRYPTOPP_FAST_ROTATE(32)
+    // 5 instructions with rotate instruction, 9 without
+    return (rotrFixed(value, 8U) & 0xff00ff00) | (rotlFixed(value, 8U) & 0x00ff00ff);
+#else
+    // 6 instructions with rotate instruction, 8 without
+    value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
+    return rotlFixed(value, 16U);
+#endif
+}
+
+#ifdef WORD64_AVAILABLE
+inline word64 ByteReverse(word64 value)
+{
+#if defined(__GNUC__) && defined(__x86_64__)
+    __asm__ ("bswap %0" : "=r" (value) : "0" (value));
+    return value;
+#elif defined(CRYPTOPP_BYTESWAP_AVAILABLE)
+    return bswap_64(value);
+#elif defined(_MSC_VER) && _MSC_VER >= 1300
+    return _byteswap_uint64(value);
+#elif defined(CRYPTOPP_SLOW_WORD64)
+    return (word64(ByteReverse(word32(value))) << 32) | ByteReverse(word32(value>>32));
+#else
+    value = ((value & W64LIT(0xFF00FF00FF00FF00)) >> 8) | ((value & W64LIT(0x00FF00FF00FF00FF)) << 8);
+    value = ((value & W64LIT(0xFFFF0000FFFF0000)) >> 16) | ((value & W64LIT(0x0000FFFF0000FFFF)) << 16);
+    return rotlFixed(value, 32U);
+#endif
+}
+#endif
+
+
+//
+// SHA
+//
+
+// http://www.weidai.com/scan-mirror/md.html#SHA-1
+class SHA1
+{
+public:
+    typedef word32 HashWordType;
+    static void InitState(word32 *state);
+    static void Transform(word32 *digest, const word32 *data);
+    static const char * StaticAlgorithmName() {return "SHA-1";}
+};
+
+typedef SHA1 SHA;   // for backwards compatibility
+
+// implements the SHA-256 standard
+class SHA256
+{
+public:
+    typedef word32 HashWordType;
+    static void InitState(word32 *state);
+    static void Transform(word32 *digest, const word32 *data);
+    static const char * StaticAlgorithmName() {return "SHA-256";}
+};
+
+// implements the SHA-224 standard
+class SHA224
+{
+public:
+    typedef word32 HashWordType;
+    static void InitState(word32 *state);
+    static void Transform(word32 *digest, const word32 *data) {SHA256::Transform(digest, data);}
+    static const char * StaticAlgorithmName() {return "SHA-224";}
+};
+
+#ifdef WORD64_AVAILABLE
+
+// implements the SHA-512 standard
+class SHA512
+{
+public:
+    typedef word64 HashWordType;
+    static void InitState(word64 *state);
+    static void Transform(word64 *digest, const word64 *data);
+    static const char * StaticAlgorithmName() {return "SHA-512";}
+};
+
+// implements the SHA-384 standard
+class SHA384
+{
+public:
+    typedef word64 HashWordType;
+    static void InitState(word64 *state);
+    static void Transform(word64 *digest, const word64 *data) {SHA512::Transform(digest, data);}
+    static const char * StaticAlgorithmName() {return "SHA-384";}
+};
+
+#endif
+
+}
+
+#endif