fix aliases for sha3 vs sha2

src/examples/zkapps/hashing/run.ts

@@ -35,27 +35,27 @@ const initialState =
 let currentState;
 console.log('Initial State', initialState);
 
-console.log(`Updating commitment from ${initialState} using SHA256 ...`);
+console.log(`Updating commitment from ${initialState} using SHA3-256 ...`);
 txn = await Mina.transaction(feePayer, async () => {
-  await contract.SHA256(hashData);
+  await contract.SHA3_256(hashData);
 });
 await txn.prove();
 await txn.sign([feePayer.key]).send();
 currentState = Mina.getAccount(contractAccount).zkapp?.appState?.[0].toString();
 console.log(`Current state successfully updated to ${currentState}`);
 
-console.log(`Updating commitment from ${initialState} using SHA384 ...`);
+console.log(`Updating commitment from ${initialState} using SHA3-384 ...`);
 txn = await Mina.transaction(feePayer, async () => {
-  await contract.SHA384(hashData);
+  await contract.SHA3_384(hashData);
 });
 await txn.prove();
 await txn.sign([feePayer.key]).send();
 currentState = Mina.getAccount(contractAccount).zkapp?.appState?.[0].toString();
 console.log(`Current state successfully updated to ${currentState}`);
 
-console.log(`Updating commitment from ${initialState} using SHA512 ...`);
+console.log(`Updating commitment from ${initialState} using SHA3-512 ...`);
 txn = await Mina.transaction(feePayer, async () => {
-  await contract.SHA512(hashData);
+  await contract.SHA3_512(hashData);
 });
 await txn.prove();
 await txn.sign([feePayer.key]).send();

src/lib/provable/crypto/hash.ts

@@ -49,6 +49,19 @@ const Hash = {
     hash: Gadgets.SHA256.hash,
   },
 
+  /**
+   * The SHA2 hash function with an output length of 224 | 256 | 384 | 512 bits.
+   */
+    SHA2: {
+      /**
+       * Hashes the given bytes using SHA2.
+       *
+       * This is an alias for `Gadgets.SHA2.hash(length,bytes)`.\
+       * See {@link Gadgets.SHA2.hash} for details and usage examples.
+       */
+      hash: Gadgets.SHA2.hash,
+    },
+
   /**
    * The SHA3 hash function with an output length of 256 bits.
    */

src/lib/provable/gadgets/gadgets.ts

@@ -985,6 +985,7 @@ const Gadgets = {
    *
    * Produces an output of {@link Bytes} that conforms to the chosen bit length.
    *
+   * @param length - 224 | 256 | 384 | 512 representing the length of the hash.
    * @param data - {@link Bytes} representing the message to hash.
    *
    * ```ts