diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24e86b0c1..298d60a4c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## v2.38.0
+
+## What's Changed
+
+* Add two grpc-web endpoints for node27/28 to ClientConstants.js by @ElijahLynn in https://github.com/hashgraph/hedera-sdk-js/pull/2019
+* LocalProvider - close method by @svetoslav-nikol0v in https://github.com/hashgraph/hedera-sdk-js/pull/2020
+* Method fromEvmAddress() fails to return the contract id from long zero address by @svetoslav-nikol0v in https://github.com/hashgraph/hedera-sdk-js/pull/2018
+* Add support for Long and BigNumber to the array methods of ContractFunctionParameters by @svetoslav-nikol0v in https://github.com/hashgraph/hedera-sdk-js/pull/2013
+* Added fromStringDer() method (and tests) and deprecated fromString() method by @svetoslav-nikol0v in https://github.com/hashgraph/hedera-sdk-js/pull/2030
+* Remove all warnings by @svetoslav-nikol0v in https://github.com/hashgraph/hedera-sdk-js/pull/2033
+
 ## v2.37.0
 
 ## What's Changed
diff --git a/examples/account-create-with-hts.js b/examples/account-create-with-hts.js
index 27fd20ebf..521db1e5e 100644
--- a/examples/account-create-with-hts.js
+++ b/examples/account-create-with-hts.js
@@ -54,7 +54,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     const nodes = {
         "127.0.0.1:50211": new AccountId(3),
diff --git a/examples/consensus-pub-sub.js b/examples/consensus-pub-sub.js
index 71c2f0bce..51197d8a1 100644
--- a/examples/consensus-pub-sub.js
+++ b/examples/consensus-pub-sub.js
@@ -26,7 +26,7 @@ async function main() {
 
     client = Client.forName(process.env.HEDERA_NETWORK).setOperator(
         AccountId.fromString(process.env.OPERATOR_ID),
-        PrivateKey.fromString(process.env.OPERATOR_KEY)
+        PrivateKey.fromStringDer(process.env.OPERATOR_KEY)
     );
 
     try {
diff --git a/examples/contract-nonces.js b/examples/contract-nonces.js
index 7a5ba08c0..f94c0cf04 100644
--- a/examples/contract-nonces.js
+++ b/examples/contract-nonces.js
@@ -36,7 +36,7 @@ async function main() {
     try {
         const fileCreateTxResponse = await (
             await new FileCreateTransaction()
-                .setKeys([PrivateKey.fromString(process.env.OPERATOR_KEY)])
+                .setKeys([PrivateKey.fromStringDer(process.env.OPERATOR_KEY)])
                 .setContents(SMART_CONTRACT_BYTECODE)
                 .setMaxTransactionFee(new Hbar(2))
                 .freezeWithSigner(wallet)
@@ -48,7 +48,7 @@ async function main() {
 
         const contractCreateTxResponse = await (
             await new ContractCreateTransaction()
-                .setAdminKey(PrivateKey.fromString(process.env.OPERATOR_KEY))
+                .setAdminKey(PrivateKey.fromStringDer(process.env.OPERATOR_KEY))
                 .setGas(100000)
                 .setBytecodeFileId(newFileId)
                 .setContractMemo(
diff --git a/examples/create-account-with-alias-and-receiver-signature.js b/examples/create-account-with-alias-and-receiver-signature.js
index 09cc78576..9dfd9471d 100644
--- a/examples/create-account-with-alias-and-receiver-signature.js
+++ b/examples/create-account-with-alias-and-receiver-signature.js
@@ -32,7 +32,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     const nodes = {
         "127.0.0.1:50211": new AccountId(3),
diff --git a/examples/create-account-with-alias.js b/examples/create-account-with-alias.js
index 546c7331e..e802c1237 100644
--- a/examples/create-account-with-alias.js
+++ b/examples/create-account-with-alias.js
@@ -31,7 +31,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     const nodes = {
         "127.0.0.1:50211": new AccountId(3),
diff --git a/examples/exempt-custom-fees.js b/examples/exempt-custom-fees.js
index 68ce09fa3..382b15fff 100644
--- a/examples/exempt-custom-fees.js
+++ b/examples/exempt-custom-fees.js
@@ -44,7 +44,7 @@ async function main() {
     }
     // Configure accounts and client, and generate needed keys
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     const provider = new LocalProvider();
 
diff --git a/examples/generate-txid-on-demand.js b/examples/generate-txid-on-demand.js
index c58946246..25c36a9df 100644
--- a/examples/generate-txid-on-demand.js
+++ b/examples/generate-txid-on-demand.js
@@ -49,7 +49,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     let client;
 
diff --git a/examples/hts-nftP1-fee-create-mint-burn-associate-transfer.js b/examples/hts-nftP1-fee-create-mint-burn-associate-transfer.js
index c1bd06a55..fca9174f5 100644
--- a/examples/hts-nftP1-fee-create-mint-burn-associate-transfer.js
+++ b/examples/hts-nftP1-fee-create-mint-burn-associate-transfer.js
@@ -28,13 +28,13 @@ dotenv.config();
 
 // Configure accounts and client, and generate needed keys
 const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 const treasuryId = AccountId.fromString(process.env.TREASURY_ID);
-const treasuryKey = PrivateKey.fromString(process.env.TREASURY_KEY);
+const treasuryKey = PrivateKey.fromStringDer(process.env.TREASURY_KEY);
 const aliceId = AccountId.fromString(process.env.ALICE_ID);
-const aliceKey = PrivateKey.fromString(process.env.ALICE_KEY);
+const aliceKey = PrivateKey.fromStringDer(process.env.ALICE_KEY);
 const bobId = AccountId.fromString(process.env.BOB_ID);
-const bobKey = PrivateKey.fromString(process.env.BOB_KEY);
+const bobKey = PrivateKey.fromStringDer(process.env.BOB_KEY);
 const nodes = {
     "127.0.0.1:50211": new AccountId(3),
 };
diff --git a/examples/hts-nftP2-kyc-upate-schedule.js b/examples/hts-nftP2-kyc-upate-schedule.js
index c209f038d..a55a01a89 100644
--- a/examples/hts-nftP2-kyc-upate-schedule.js
+++ b/examples/hts-nftP2-kyc-upate-schedule.js
@@ -32,13 +32,13 @@ dotenv.config();
 
 // Configure accounts and client, and generate needed keys
 const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 const treasuryId = AccountId.fromString(process.env.TREASURY_ID);
-const treasuryKey = PrivateKey.fromString(process.env.TREASURY_KEY);
+const treasuryKey = PrivateKey.fromStringDer(process.env.TREASURY_KEY);
 const aliceId = AccountId.fromString(process.env.ALICE_ID);
-const aliceKey = PrivateKey.fromString(process.env.ALICE_KEY);
+const aliceKey = PrivateKey.fromStringDer(process.env.ALICE_KEY);
 const bobId = AccountId.fromString(process.env.BOB_ID);
-const bobKey = PrivateKey.fromString(process.env.BOB_KEY);
+const bobKey = PrivateKey.fromStringDer(process.env.BOB_KEY);
 const nodes = {
     "127.0.0.1:50211": new AccountId(3),
 };
diff --git a/examples/hts-nftP3-pause-freeze-wipe-delete.js b/examples/hts-nftP3-pause-freeze-wipe-delete.js
index 914e20f56..1b706c9e8 100644
--- a/examples/hts-nftP3-pause-freeze-wipe-delete.js
+++ b/examples/hts-nftP3-pause-freeze-wipe-delete.js
@@ -38,13 +38,13 @@ dotenv.config();
 
 // Configure accounts and client, and generate needed keys
 const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 const treasuryId = AccountId.fromString(process.env.TREASURY_ID);
-const treasuryKey = PrivateKey.fromString(process.env.TREASURY_KEY);
+const treasuryKey = PrivateKey.fromStringDer(process.env.TREASURY_KEY);
 const aliceId = AccountId.fromString(process.env.ALICE_ID);
-const aliceKey = PrivateKey.fromString(process.env.ALICE_KEY);
+const aliceKey = PrivateKey.fromStringDer(process.env.ALICE_KEY);
 const bobId = AccountId.fromString(process.env.BOB_ID);
-const bobKey = PrivateKey.fromString(process.env.BOB_KEY);
+const bobKey = PrivateKey.fromStringDer(process.env.BOB_KEY);
 const nodes = {
     "127.0.0.1:50211": new AccountId(3),
 };
diff --git a/examples/lazy-create-transfer-tx.js b/examples/lazy-create-transfer-tx.js
index c415a49be..06109ae37 100644
--- a/examples/lazy-create-transfer-tx.js
+++ b/examples/lazy-create-transfer-tx.js
@@ -49,7 +49,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     const nodes = {
         "127.0.0.1:50211": new AccountId(3),
diff --git a/examples/logger-functionalities.js b/examples/logger-functionalities.js
index 0d48fc4ed..feb904b91 100644
--- a/examples/logger-functionalities.js
+++ b/examples/logger-functionalities.js
@@ -42,7 +42,7 @@ async function main() {
     }
 
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     let debugLogger = new Logger(LogLevel.Debug);
     let infoLogger = new Logger(LogLevel.Info);
diff --git a/examples/multi-sig-offline.js b/examples/multi-sig-offline.js
index f76b167bd..3ed97b316 100644
--- a/examples/multi-sig-offline.js
+++ b/examples/multi-sig-offline.js
@@ -32,7 +32,7 @@ async function main() {
 
     const client = Client.forName(process.env.HEDERA_NETWORK).setOperator(
         AccountId.fromString(process.env.OPERATOR_ID),
-        PrivateKey.fromString(process.env.OPERATOR_KEY)
+        PrivateKey.fromStringDer(process.env.OPERATOR_KEY)
     );
 
     user1Key = PrivateKey.generate();
diff --git a/examples/nft-add-remove-allowances.js b/examples/nft-add-remove-allowances.js
index 2de978588..9e75a2f2f 100644
--- a/examples/nft-add-remove-allowances.js
+++ b/examples/nft-add-remove-allowances.js
@@ -42,7 +42,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
     const nodes = {
         "127.0.0.1:50211": new AccountId(3),
     };
diff --git a/examples/solidity-precompile-example.js b/examples/solidity-precompile-example.js
index 8337cc5b6..50f572b62 100644
--- a/examples/solidity-precompile-example.js
+++ b/examples/solidity-precompile-example.js
@@ -24,7 +24,7 @@ async function main() {
         provider
     );
 
-    const operatorPrivateKey = hashgraph.PrivateKey.fromString(
+    const operatorPrivateKey = hashgraph.PrivateKey.fromStringDer(
         process.env.OPERATOR_KEY
     );
     const operatorPublicKey = operatorPrivateKey.publicKey;
diff --git a/examples/time-drift.js b/examples/time-drift.js
index 5a1de4968..dc8583dd6 100644
--- a/examples/time-drift.js
+++ b/examples/time-drift.js
@@ -54,7 +54,7 @@ async function main() {
 
     const client = Client.forName(process.env.HEDERA_NETWORK).setOperator(
         AccountId.fromString(process.env.OPERATOR_ID),
-        PrivateKey.fromString(process.env.OPERATOR_KEY)
+        PrivateKey.fromStringDer(process.env.OPERATOR_KEY)
     );
 
     await sync();
diff --git a/examples/topic-message-submit-get-all-chunks-status.js b/examples/topic-message-submit-get-all-chunks-status.js
index cd0164960..4c10f0c35 100644
--- a/examples/topic-message-submit-get-all-chunks-status.js
+++ b/examples/topic-message-submit-get-all-chunks-status.js
@@ -32,7 +32,7 @@ async function main() {
 
     const client = Client.forName(process.env.HEDERA_NETWORK).setOperator(
         AccountId.fromString(process.env.OPERATOR_ID),
-        PrivateKey.fromString(process.env.OPERATOR_KEY)
+        PrivateKey.fromStringDer(process.env.OPERATOR_KEY)
     );
 
     try {
diff --git a/examples/transfer-using-evm-address.js b/examples/transfer-using-evm-address.js
index a4abddce7..38caf7038 100644
--- a/examples/transfer-using-evm-address.js
+++ b/examples/transfer-using-evm-address.js
@@ -41,7 +41,7 @@ async function main() {
         );
     }
     const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
-    const operatorKey = PrivateKey.fromString(process.env.OPERATOR_KEY);
+    const operatorKey = PrivateKey.fromStringDer(process.env.OPERATOR_KEY);
 
     const nodes = {
         "127.0.0.1:50211": new AccountId(3),
diff --git a/examples/zeroTokenOperations.js b/examples/zeroTokenOperations.js
index fbfd91ef5..2a9c7c09c 100644
--- a/examples/zeroTokenOperations.js
+++ b/examples/zeroTokenOperations.js
@@ -33,7 +33,7 @@ async function main() {
         provider
     );
 
-    const operatorPrivateKey = hashgraph.PrivateKey.fromString(
+    const operatorPrivateKey = hashgraph.PrivateKey.fromStringDer(
         process.env.OPERATOR_KEY
     );
     const operatorPublicKey = operatorPrivateKey.publicKey;
diff --git a/package.json b/package.json
index aca04e258..94ccbe69e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hashgraph/sdk",
-    "version": "2.37.0",
+    "version": "2.38.0",
     "description": "Hedera™ Hashgraph SDK",
     "types": "./lib/index.d.ts",
     "main": "./lib/index.cjs",
@@ -57,7 +57,7 @@
         "@ethersproject/bytes": "^5.7.0",
         "@ethersproject/rlp": "^5.7.0",
         "@grpc/grpc-js": "1.8.2",
-        "@hashgraph/cryptography": "1.4.8-beta.3",
+        "@hashgraph/cryptography": "1.4.8-beta.4",
         "@hashgraph/proto": "2.14.0-beta.2",
         "axios": "^1.3.1",
         "bignumber.js": "^9.1.1",
diff --git a/packages/cryptography/package.json b/packages/cryptography/package.json
index 32cf9ea2a..32a484ae2 100644
--- a/packages/cryptography/package.json
+++ b/packages/cryptography/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hashgraph/cryptography",
-    "version": "1.4.8-beta.3",
+    "version": "1.4.8-beta.4",
     "description": "Cryptographic utilities and primitives for the Hedera™ Hashgraph SDK",
     "main": "./lib/index.cjs",
     "types": "./lib/index.d.ts",
diff --git a/packages/cryptography/src/PrivateKey.js b/packages/cryptography/src/PrivateKey.js
index 473096e8c..aeaf883b1 100644
--- a/packages/cryptography/src/PrivateKey.js
+++ b/packages/cryptography/src/PrivateKey.js
@@ -135,6 +135,13 @@ export default class PrivateKey extends Key {
      */
     static fromBytes(data) {
         let message;
+
+        if (data.length == 32) {
+            console.warn(
+                "WARNING: Consider using fromStringECDSA() or fromStringED2551() on a HEX-encoded string and fromStringDer() on a HEX-encoded string with DER prefix instead.",
+            );
+        }
+
         try {
             return new PrivateKey(Ed25519PrivateKey.fromBytes(data));
         } catch (error) {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 138f0d149..26beed189 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -21,8 +21,8 @@ dependencies:
     specifier: 1.8.2
     version: 1.8.2
   '@hashgraph/cryptography':
-    specifier: 1.4.8-beta.3
-    version: 1.4.8-beta.3(expo@49.0.10)
+    specifier: 1.4.8-beta.4
+    version: 1.4.8-beta.4(expo@49.0.10)
   '@hashgraph/proto':
     specifier: 2.14.0-beta.2
     version: 2.14.0-beta.2
@@ -2588,8 +2588,8 @@ packages:
       protobufjs: 7.2.5
       yargs: 17.7.2
 
-  /@hashgraph/cryptography@1.4.8-beta.3(expo@49.0.10):
-    resolution: {integrity: sha512-ABmJOMr17ZeH8hf+SAKy+91SNdGjnfqTQlmm0LE4YFyT4Euo/YyIjyhCDQA2Oi+VBOC4p6CdRRa9vs3Q/Waxgg==}
+  /@hashgraph/cryptography@1.4.8-beta.4(expo@49.0.10):
+    resolution: {integrity: sha512-43wpRuE6ML04dFNpNPHvEZTKlVT9+dOE7SxyQPMYunsFitJvlIDl1VvOXeOSGbVdsV+nDQQV7C9pZWRSV1e32g==}
     engines: {node: '>=12.0.0'}
     peerDependencies:
       expo: ^45.0.3
diff --git a/src/PrivateKey.js b/src/PrivateKey.js
index 048c70ad4..55add2c5d 100644
--- a/src/PrivateKey.js
+++ b/src/PrivateKey.js
@@ -143,14 +143,10 @@ export default class PrivateKey extends Key {
      * @deprecated - Use fromStringECDSA() or fromStringED2551() on a HEX-encoded string
      * and fromStringDer() on a HEX-encoded string with DER prefix instead.
      * Construct a private key from a hex-encoded string. Requires DER header.
-     *
      * @param {string} text
      * @returns {PrivateKey}
      */
     static fromString(text) {
-        console.warn(
-            "WARNING: Consider using fromStringECDSA() or fromStringED2551() on a HEX-encoded string and fromStringDer() on a HEX-encoded string with DER prefix instead."
-        );
         return new PrivateKey(cryptography.PrivateKey.fromString(text));
     }
 
diff --git a/src/Wallet.js b/src/Wallet.js
index 979f86520..b65325ade 100644
--- a/src/Wallet.js
+++ b/src/Wallet.js
@@ -57,6 +57,8 @@ import * as util from "./util.js";
  */
 export default class Wallet {
     /**
+     * NOTE: When using string for private key, the string needs to contain DER headers
+     *
      * @param {AccountId | string} accountId
      * @param {PrivateKey | string} privateKey
      * @param {Provider=} provider
@@ -64,7 +66,7 @@ export default class Wallet {
     constructor(accountId, privateKey, provider) {
         const key =
             typeof privateKey === "string"
-                ? PrivateKey.fromString(privateKey)
+                ? PrivateKey.fromStringDer(privateKey)
                 : privateKey;
 
         this.publicKey = key.publicKey;
diff --git a/src/client/Client.js b/src/client/Client.js
index 51fa74ece..8d1d9afe0 100644
--- a/src/client/Client.js
+++ b/src/client/Client.js
@@ -280,6 +280,7 @@ export default class Client {
 
     /**
      * Set the account that will, by default, pay for transactions and queries built with this client.
+     * NOTE: When using string for private key, the string needs to contain DER headers
      *
      * @param {AccountId | string} accountId
      * @param {PrivateKey | string} privateKey
@@ -288,7 +289,7 @@ export default class Client {
     setOperator(accountId, privateKey) {
         const key =
             typeof privateKey === "string"
-                ? PrivateKey.fromString(privateKey)
+                ? PrivateKey.fromStringDer(privateKey)
                 : privateKey;
 
         return this.setOperatorWith(accountId, key.publicKey, (message) =>
diff --git a/test/unit/EcdsaPrivateKey.js b/test/unit/EcdsaPrivateKey.js
index 9ff0db391..2bde9a6ab 100644
--- a/test/unit/EcdsaPrivateKey.js
+++ b/test/unit/EcdsaPrivateKey.js
@@ -17,7 +17,7 @@ describe("EcdsaPrivateKey", function () {
     });
 
     it("fromStringRaw and fromStringDer work", function () {
-        PrivateKey.fromString(
+        PrivateKey.fromStringDer(
             hex.encode(PrivateKey.fromStringECDSA(RAW_KEY).toBytesDer())
         );
     });
@@ -328,25 +328,25 @@ describe("EcdsaPrivateKey", function () {
         const PUBLIC_KEY4 =
             "03b69a75a5ddb1c0747e995d47555019e5d8a28003ab5202bd92f534361fb4ec8a";
 
-        const ecdsaPrivateKey1 = PrivateKey.fromString(PRIVATE_KEY_DER1);
+        const ecdsaPrivateKey1 = PrivateKey.fromStringDer(PRIVATE_KEY_DER1);
         expect(ecdsaPrivateKey1.toStringRaw()).to.be.equal(PRIVATE_KEY1);
         expect(ecdsaPrivateKey1.publicKey.toStringRaw()).to.be.equal(
             PUBLIC_KEY1
         );
 
-        const ecdsaPrivateKey2 = PrivateKey.fromString(PRIVATE_KEY_DER2);
+        const ecdsaPrivateKey2 = PrivateKey.fromStringDer(PRIVATE_KEY_DER2);
         expect(ecdsaPrivateKey2.toStringRaw()).to.be.equal(PRIVATE_KEY2);
         expect(ecdsaPrivateKey2.publicKey.toStringRaw()).to.be.equal(
             PUBLIC_KEY2
         );
 
-        const ecdsaPrivateKey3 = PrivateKey.fromString(PRIVATE_KEY_DER3);
+        const ecdsaPrivateKey3 = PrivateKey.fromStringDer(PRIVATE_KEY_DER3);
         expect(ecdsaPrivateKey3.toStringRaw()).to.be.equal(PRIVATE_KEY3);
         expect(ecdsaPrivateKey3.publicKey.toStringRaw()).to.be.equal(
             PUBLIC_KEY3
         );
 
-        const ecdsaPrivateKey4 = PrivateKey.fromString(PRIVATE_KEY_DER4);
+        const ecdsaPrivateKey4 = PrivateKey.fromStringDer(PRIVATE_KEY_DER4);
         expect(ecdsaPrivateKey4.toStringRaw()).to.be.equal(PRIVATE_KEY4);
         expect(ecdsaPrivateKey4.publicKey.toStringRaw()).to.be.equal(
             PUBLIC_KEY4
diff --git a/test/unit/Ed25519PrivateKey.js b/test/unit/Ed25519PrivateKey.js
index 6a4f7aab2..bf0a02f78 100644
--- a/test/unit/Ed25519PrivateKey.js
+++ b/test/unit/Ed25519PrivateKey.js
@@ -15,8 +15,8 @@ describe("Ed25519PrivateKey", function () {
         await PrivateKey.generateED25519Async();
     });
 
-    it("fromStringRaw and fromStringDer work", function () {
-        PrivateKey.fromString(
+    it("fromStringDer works", function () {
+        PrivateKey.fromStringDer(
             hex.encode(PrivateKey.fromStringED25519(RAW_KEY).toBytesDer())
         );
     });
@@ -263,7 +263,7 @@ describe("Ed25519PrivateKey", function () {
         var PUBLIC_KEY1 =
             "8ccd31b53d1835b467aac795dab19b274dd3b37e3daf12fcec6bc02bac87b53d";
 
-        var ed25519PrivateKey1 = PrivateKey.fromString(PRIVATE_KEY_DER1);
+        var ed25519PrivateKey1 = PrivateKey.fromStringDer(PRIVATE_KEY_DER1);
         expect(ed25519PrivateKey1.toStringRaw()).to.be.equal(PRIVATE_KEY1);
         expect(ed25519PrivateKey1.publicKey.toStringRaw()).to.be.equal(
             PUBLIC_KEY1
diff --git a/test/unit/TokenCreateTransaction.js b/test/unit/TokenCreateTransaction.js
index 399c12ee2..39a34525e 100644
--- a/test/unit/TokenCreateTransaction.js
+++ b/test/unit/TokenCreateTransaction.js
@@ -10,25 +10,25 @@ import Long from "long";
 
 describe("TokenCreateTransaction", function () {
     it("encodes to correct protobuf", function () {
-        const key1 = PrivateKey.fromString(
+        const key1 = PrivateKey.fromStringDer(
             "302e020100300506032b6570042204205fc37fbd55631722b7ab5ec8e31696f6d3f818a15c5258a1529de7d4a1def6e2"
         );
-        const key2 = PrivateKey.fromString(
+        const key2 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420b5e15b70109fe6e11d1d6d06b20d27b494aa05a28a8bc84c627d9be66e179391"
         );
-        const key3 = PrivateKey.fromString(
+        const key3 = PrivateKey.fromStringDer(
             "302e020100300506032b6570042204202b5dc9915d5b6829592f4562a3d099e7b1bdd48da347e351da8d31cd41653016"
         );
-        const key4 = PrivateKey.fromString(
+        const key4 = PrivateKey.fromStringDer(
             "302e020100300506032b6570042204205a8571fe4badbc6bd76f03170f5ec4bdc69f2edb93f133477d0ef8f9e17a0f3a"
         );
-        const key5 = PrivateKey.fromString(
+        const key5 = PrivateKey.fromStringDer(
             "302e020100300506032b65700422042081c36f46db2bc4e7d993a23718a158c9fffa96719d7e72b3823d8bc9b973d596"
         );
-        const key6 = PrivateKey.fromString(
+        const key6 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420ff498f69b92ea43a0a8fd6e4a7036e5f8b5f23e527b0443bc309cc4ff5b75303"
         );
-        const key7 = PrivateKey.fromString(
+        const key7 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420542b4d4a318a1ae5f91071f34c8d900b1150e83d15fe71d22b8581e1203f99ad"
         );
         const autoRenewAccountId = new AccountId(10);
diff --git a/test/unit/TokenUpdateTransaction.js b/test/unit/TokenUpdateTransaction.js
index c57dc0f6a..81b4486af 100644
--- a/test/unit/TokenUpdateTransaction.js
+++ b/test/unit/TokenUpdateTransaction.js
@@ -9,25 +9,25 @@ import Long from "long";
 
 describe("TokenUpdateTransaction", function () {
     it("encodes to correct protobuf", function () {
-        const key1 = PrivateKey.fromString(
+        const key1 = PrivateKey.fromStringDer(
             "302e020100300506032b6570042204205fc37fbd55631722b7ab5ec8e31696f6d3f818a15c5258a1529de7d4a1def6e2"
         );
-        const key2 = PrivateKey.fromString(
+        const key2 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420b5e15b70109fe6e11d1d6d06b20d27b494aa05a28a8bc84c627d9be66e179391"
         );
-        const key3 = PrivateKey.fromString(
+        const key3 = PrivateKey.fromStringDer(
             "302e020100300506032b6570042204202b5dc9915d5b6829592f4562a3d099e7b1bdd48da347e351da8d31cd41653016"
         );
-        const key4 = PrivateKey.fromString(
+        const key4 = PrivateKey.fromStringDer(
             "302e020100300506032b6570042204205a8571fe4badbc6bd76f03170f5ec4bdc69f2edb93f133477d0ef8f9e17a0f3a"
         );
-        const key5 = PrivateKey.fromString(
+        const key5 = PrivateKey.fromStringDer(
             "302e020100300506032b65700422042081c36f46db2bc4e7d993a23718a158c9fffa96719d7e72b3823d8bc9b973d596"
         );
-        const key6 = PrivateKey.fromString(
+        const key6 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420ff498f69b92ea43a0a8fd6e4a7036e5f8b5f23e527b0443bc309cc4ff5b75303"
         );
-        const key7 = PrivateKey.fromString(
+        const key7 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420542b4d4a318a1ae5f91071f34c8d900b1150e83d15fe71d22b8581e1203f99ad"
         );
         const autoRenewAccountId = new AccountId(10);
diff --git a/test/unit/Transaction.js b/test/unit/Transaction.js
index ba7172f41..cddaf1b66 100644
--- a/test/unit/Transaction.js
+++ b/test/unit/Transaction.js
@@ -15,7 +15,7 @@ import Long from "long";
 
 describe("Transaction", function () {
     it("toBytes", async function () {
-        const key = PrivateKey.fromString(
+        const key = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420a58d361e61756ee809686255fda09bacb846ea8aa589c67ac39cfbcf82dd511c"
         );
         const account = AccountId.fromString("0.0.1004");
@@ -125,10 +125,10 @@ describe("Transaction", function () {
     });
 
     it("fromBytes fails when bodies differ", function () {
-        const key1 = PrivateKey.fromString(
+        const key1 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420a58d361e61756ee809686255fda09bacb846ea8aa589c67ac39cfbcf82dd511c"
         );
-        const key2 = PrivateKey.fromString(
+        const key2 = PrivateKey.fromStringDer(
             "302e020100300506032b657004220420a58d361e61756ee809686255fda09bacb846ea8aa589c67ac39cfbcf82dd511d"
         );