Part 36 of the MQL5 series shifts from basic API connectivity to request security for exchange endpoints such as Binance.
Core focus is signing requests with HMAC-SHA256. The signature proves authenticity and integrity: the server recomputes the same value from request parameters plus a shared secret key and rejects mismatches.
SHA256 provides deterministic 256-bit hashing with strong change detection, but it does not identify the sender. HMAC adds the secret key so only authorized clients can generate valid signatures.
In MQL5, signing is performed locally before WebRequest. Inputs are typically a query string including a timestamp, plus the secret key. Both must be converted to byte arrays (commonly UTF-8). CryptEncode is used to produce the binary signature, which is then sent as a request parameter.
👉 Read | VPS | @mql5dev
#MQL5 #MT5 #HMAC
Core focus is signing requests with HMAC-SHA256. The signature proves authenticity and integrity: the server recomputes the same value from request parameters plus a shared secret key and rejects mismatches.
SHA256 provides deterministic 256-bit hashing with strong change detection, but it does not identify the sender. HMAC adds the secret key so only authorized clients can generate valid signatures.
In MQL5, signing is performed locally before WebRequest. Inputs are typically a query string including a timestamp, plus the secret key. Both must be converted to byte arrays (commonly UTF-8). CryptEncode is used to produce the binary signature, which is then sent as a request parameter.
👉 Read | VPS | @mql5dev
#MQL5 #MT5 #HMAC
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