fix(SHA2): correct rounds logic for SHA-512 family in UI and library

src/core/config/scripts/fixCryptoApiImports.mjs

@@ -35,14 +35,24 @@ function walk(dir) {
             const content = readFileSync(fullPath, "utf8");
 
             // Add .mjs to imports if not present
-            const updated = content.replace(
+            let updated = content.replace(
                 /from "(\.[^"]*)";/g,
                 (match, p1) => {
                     if (p1.endsWith(".mjs")) return match;
                     return `from "${p1}.mjs";`;
                 }
             );
 
+            // Patch sha512.mjs default rounds and loop step logic
+            if (entry.name === "sha512.mjs") {
+                updated = updated
+                    .replace("options.rounds = options.rounds || 160;", "options.rounds = options.rounds || 80;")
+                    .replace("for (let i = 0; i < this.options.rounds; i += 2) {", "for (let i = 0; i < this.options.rounds * 2; i += 2) {")
+                    .replace("this.W = new Array(160);", "this.W = new Array(this.options.rounds * 2);")
+                    .replace("options.rounds=160", "options.rounds=80")
+                    .replace("(Must be greater than 32)", "(Must be greater than 16)");
+            }
+
             if (updated !== content) {
                 writeFileSync(fullPath, updated, "utf8");
             }

src/core/operations/SHA2.mjs

@@ -20,7 +20,7 @@ class SHA2 extends Operation {
 
         this.name = "SHA2";
         this.module = "Crypto";
-        this.description = "The SHA-2 (Secure Hash Algorithm 2) hash functions were designed by the NSA. SHA-2 includes significant changes from its predecessor, SHA-1. The SHA-2 family consists of hash functions with digests (hash values) that are 224, 256, 384 or 512 bits: SHA224, SHA256, SHA384, SHA512.<br><br><ul><li>SHA-512 operates on 64-bit words.</li><li>SHA-256 operates on 32-bit words.</li><li>SHA-384 is largely identical to SHA-512 but is truncated to 384 bits.</li><li>SHA-224 is largely identical to SHA-256 but is truncated to 224 bits.</li><li>SHA-512/224 and SHA-512/256 are truncated versions of SHA-512, but the initial values are generated using the method described in Federal Information Processing Standards (FIPS) PUB 180-4.</li></ul> The message digest algorithm for SHA256 variants consists, by default, of 64 rounds, and for SHA512 variants, it is, by default, 160.";
+        this.description = "The SHA-2 (Secure Hash Algorithm 2) hash functions were designed by the NSA. SHA-2 includes significant changes from its predecessor, SHA-1. The SHA-2 family consists of hash functions with digests (hash values) that are 224, 256, 384 or 512 bits: SHA224, SHA256, SHA384, SHA512.<br><br><ul><li>SHA-512 operates on 64-bit words.</li><li>SHA-256 operates on 32-bit words.</li><li>SHA-384 is largely identical to SHA-512 but is truncated to 384 bits.</li><li>SHA-224 is largely identical to SHA-256 but is truncated to 224 bits.</li><li>SHA-512/224 and SHA-512/256 are truncated versions of SHA-512, but the initial values are generated using the method described in Federal Information Processing Standards (FIPS) PUB 180-4.</li></ul> The message digest algorithm for SHA256 variants consists, by default, of 64 rounds, and for SHA512 variants, it is, by default, 80.";
         this.infoURL = "https://wikipedia.org/wiki/SHA-2";
         this.inputType = "ArrayBuffer";
         this.outputType = "string";
@@ -70,8 +70,8 @@ class SHA2 extends Operation {
             {
                 name: "Rounds", // For SHA512 variants
                 type: "number",
-                value: 160,
-                min: 32
+                value: 80,
+                min: 16
             }
         ];
     }

tests/operations/tests/Hash.mjs

@@ -118,6 +118,17 @@ TestRegister.addTests([
             }
         ]
     },
+    {
+        name: "SHA2 512 with 80 rounds",
+        input: "Hello, World!",
+        expectedOutput: "374d794a95cdcfd8b35993185fef9ba368f160d8daf432d08ba9f1ed1e5abe6cc69291e0fa2fe0006a52570ef18c19def4e617c33ce52ef0a6e5fbe318cb0387",
+        recipeConfig: [
+            {
+                "op": "SHA2",
+                "args": ["512", null, 80]
+            }
+        ]
+    },
     {
         name: "SHA2 512/224",
         input: "Hello, World!",