4 files changed, 30 insertions, 17 deletions
diff --git a/src/util/message.cpp b/src/util/message.cpp
index 1e7128d225..e1d5cff48c 100644
--- a/src/util/message.cpp
+++ b/src/util/message.cpp
@@ -64,7 +64,7 @@ bool MessageSign(
         return false;
     }
 
-    signature = EncodeBase64(signature_bytes.data(), signature_bytes.size());
+    signature = EncodeBase64(signature_bytes);
 
     return true;
 }
diff --git a/src/util/strencodings.cpp b/src/util/strencodings.cpp
index 4d51b9045e..079a4529a3 100644
--- a/src/util/strencodings.cpp
+++ b/src/util/strencodings.cpp
@@ -126,20 +126,20 @@ void SplitHostPort(std::string in, int &portOut, std::string &hostOut) {
         hostOut = in;
 }
 
-std::string EncodeBase64(const unsigned char* pch, size_t len)
+std::string EncodeBase64(Span<const unsigned char> input)
 {
     static const char *pbase64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 
     std::string str;
-    str.reserve(((len + 2) / 3) * 4);
-    ConvertBits<8, 6, true>([&](int v) { str += pbase64[v]; }, pch, pch + len);
+    str.reserve(((input.size() + 2) / 3) * 4);
+    ConvertBits<8, 6, true>([&](int v) { str += pbase64[v]; }, input.begin(), input.end());
     while (str.size() % 4) str += '=';
     return str;
 }
 
 std::string EncodeBase64(const std::string& str)
 {
-    return EncodeBase64((const unsigned char*)str.data(), str.size());
+    return EncodeBase64(MakeUCharSpan(str));
 }
 
 std::vector<unsigned char> DecodeBase64(const char* p, bool* pf_invalid)
@@ -201,20 +201,20 @@ std::string DecodeBase64(const std::string& str, bool* pf_invalid)
     return std::string((const char*)vchRet.data(), vchRet.size());
 }
 
-std::string EncodeBase32(const unsigned char* pch, size_t len)
+std::string EncodeBase32(Span<const unsigned char> input)
 {
     static const char *pbase32 = "abcdefghijklmnopqrstuvwxyz234567";
 
     std::string str;
-    str.reserve(((len + 4) / 5) * 8);
-    ConvertBits<8, 5, true>([&](int v) { str += pbase32[v]; }, pch, pch + len);
+    str.reserve(((input.size() + 4) / 5) * 8);
+    ConvertBits<8, 5, true>([&](int v) { str += pbase32[v]; }, input.begin(), input.end());
     while (str.size() % 8) str += '=';
     return str;
 }
 
 std::string EncodeBase32(const std::string& str)
 {
-    return EncodeBase32((const unsigned char*)str.data(), str.size());
+    return EncodeBase32(MakeUCharSpan(str));
 }
 
 std::vector<unsigned char> DecodeBase32(const char* p, bool* pf_invalid)
@@ -318,6 +318,18 @@ bool ParseInt64(const std::string& str, int64_t *out)
         n <= std::numeric_limits<int64_t>::max();
 }
 
+bool ParseUInt8(const std::string& str, uint8_t *out)
+{
+    uint32_t u32;
+    if (!ParseUInt32(str, &u32) || u32 > std::numeric_limits<uint8_t>::max()) {
+        return false;
+    }
+    if (out != nullptr) {
+        *out = static_cast<uint8_t>(u32);
+    }
+    return true;
+}
+
 bool ParseUInt32(const std::string& str, uint32_t *out)
 {
     if (!ParsePrechecks(str))
diff --git a/src/util/strencodings.h b/src/util/strencodings.h
index b4bbaeebf6..1519214140 100644
--- a/src/util/strencodings.h
+++ b/src/util/strencodings.h
@@ -48,11 +48,11 @@ bool IsHex(const std::string& str);
 bool IsHexNumber(const std::string& str);
 std::vector<unsigned char> DecodeBase64(const char* p, bool* pf_invalid = nullptr);
 std::string DecodeBase64(const std::string& str, bool* pf_invalid = nullptr);
-std::string EncodeBase64(const unsigned char* pch, size_t len);
+std::string EncodeBase64(Span<const unsigned char> input);
 std::string EncodeBase64(const std::string& str);
 std::vector<unsigned char> DecodeBase32(const char* p, bool* pf_invalid = nullptr);
 std::string DecodeBase32(const std::string& str, bool* pf_invalid = nullptr);
-std::string EncodeBase32(const unsigned char* pch, size_t len);
+std::string EncodeBase32(Span<const unsigned char> input);
 std::string EncodeBase32(const std::string& str);
 
 void SplitHostPort(std::string in, int& portOut, std::string& hostOut);
@@ -99,6 +99,13 @@ NODISCARD bool ParseInt32(const std::string& str, int32_t *out);
 NODISCARD bool ParseInt64(const std::string& str, int64_t *out);
 
 /**
+ * Convert decimal string to unsigned 8-bit integer with strict parse error feedback.
+ * @returns true if the entire string could be parsed as valid integer,
+ *   false if not the entire string could be parsed or when overflow or underflow occurred.
+ */
+NODISCARD bool ParseUInt8(const std::string& str, uint8_t *out);
+
+/**
  * Convert decimal string to unsigned 32-bit integer with strict parse error feedback.
  * @returns true if the entire string could be parsed as valid integer,
  *   false if not the entire string could be parsed or when overflow or underflow occurred.
diff --git a/src/util/system.cpp b/src/util/system.cpp
index f5931b5ff1..999937d906 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -48,12 +48,6 @@
 #pragma warning(disable:4717)
 #endif
 
-#ifdef _WIN32_IE
-#undef _WIN32_IE
-#endif
-#define _WIN32_IE 0x0501
-
-#define WIN32_LEAN_AND_MEAN 1
 #ifndef NOMINMAX
 #define NOMINMAX
 #endif