These results are for reference only and were developed for educational and testing purposes. You can also directly access and review the source code, including the logic and free APIs used on this page.
Type or paste the text you want to hash into the input textarea. This can be a message, code snippet, or raw encoded value for testing.
2. Select the input encoding
Choose UTF-8, HEX, or Base64 based on the actual source value. The selected format must match the input to avoid errors.
3. Choose the output format
Select HEX or Base64 depending on how you want to review or export the final hash value.
4. Add an HMAC key if needed
Enter an optional UTF-8 HMAC key if you want to generate HMAC-SHA384 instead of a plain SHA-384 digest.
5. Generate the hash
Press Generate SHA-384 Hash to compute the value. The output area and result panel update together.
6. Normalize HEX case
If the output encoding is HEX, you can switch the hash to upper case or lower case with one click.
Detailed guide▶
This section explains how the SHA-384 tool works, what each option changes, and when plain hashing or HMAC-SHA384 is more appropriate for testing and learning.
SHA-384 Hash Generator
How to use the SHA-384 Hash Generator
Follow these steps to generate an SHA-384 hash for your text:
Enter Input Text: Type or paste the text you want to hash into the input textarea. This can be any data, such as a message, code, or file content.
Select Input Encoding: Choose the encoding format of your input text, such as UTF-8, HEX, or Base64. Make sure the selected format matches the actual value.
Configure Hash Settings:
Output Encoding: Select HEX or Base64 for the hash result.
HMAC Key: Enter an optional UTF-8 key to generate HMAC-SHA384 for authenticity and integrity testing.
Generate Hash: Click the Generate SHA-384 Hash button to compute the hash of the input text.
Review Results: The output hash and selected settings appear in the result box, and the copy icon can copy the full result block.
Case Conversion: If the output encoding is HEX, use the upper case and lower case buttons to normalize the result.
A practical starting point is UTF-8 input, HEX output, and no HMAC key. Add an HMAC key only when you specifically want HMAC-SHA384 behavior.
Understanding SHA-384 hashing
SHA-384 is part of the SHA-2 family developed by the National Security Agency and standardized by NIST. It produces a fixed 384-bit hash value and is derived from the SHA-512 design with a truncated output.
Hash function mechanism
Block processing: SHA-384 processes input data in 1024-bit blocks after padding the message.
Round structure: It uses 80 rounds of logical operations, bitwise transformations, and modular addition.
Output model: The internal structure is related to SHA-512, but SHA-384 returns a 384-bit final digest.
Fixed output length
Regardless of input size, SHA-384 always generates a 384-bit output.
That output is commonly represented as a 96-character hexadecimal string or a Base64 string.
One-way design
SHA-384 is designed to be computationally irreversible in practical use.
It is intended for integrity checking, fingerprinting, and authentication workflows rather than encryption.
HMAC-SHA384
HMAC combines SHA-384 with a secret key to verify both message integrity and authenticity.
This is different from plain hashing because the secret key becomes part of the authentication process.
Performance profile
SHA-384 performs especially well on 64-bit platforms because of its SHA-512 family internals.
It is often slightly slower than SHA-256, but it provides a larger output and stronger collision margin.
Security considerations
SHA-384 remains a strong modern cryptographic hash choice when you need a high-security digest and a comfortable safety margin.
Collision resistance
SHA-384 has no practical collision attacks known in real-world use.
Its 384-bit output offers a very strong collision resistance margin for sensitive applications.
Preimage resistance
Finding an input that matches a target SHA-384 hash is computationally infeasible with current technology.
Finding a second different input with the same digest is also considered infeasible in practice.
Length extension caution
Like other SHA-2 algorithms based on this construction, plain SHA-384 can be vulnerable to length extension misuse in some designs.
HMAC-SHA384 avoids that issue for authentication use cases.
Production caution
This page runs entirely in the browser and is best suited for learning, testing, and quick verification.
Production systems should use audited libraries, secure deployment practices, and proper secret handling.
If you need authenticity checking, prefer HMAC-SHA384 over plain SHA-384 rather than trying to build your own keyed format around a raw digest.
Applications of SHA-384
SHA-384 is used in environments where a stronger digest size is preferred or where compliance and security policy call for larger SHA-2 outputs.
Digital signatures and certificates
SHA-384 appears in digital signature workflows and higher-assurance certificate environments.
It can be used with modern PKI systems when stronger digest sizes are desired.
File integrity verification
It is suitable for checksums where you want to verify that files have not been altered during storage or transfer.
Software distribution, backup validation, and forensic workflows can all benefit from this style of hashing.
Secure communication
HMAC-SHA384 is relevant in message authentication, API security, and some protocol designs.
It helps verify both integrity and authenticity when both sides share a secret key.
Data fingerprinting
SHA-384 can produce stable content fingerprints for deduplication, comparison, and verification tasks.
It is useful when you need a consistent digest across systems and environments.
History of SHA-384
SHA-384 belongs to the SHA-2 family, which NIST published in 2001 to provide stronger alternatives to SHA-1 and to broaden the range of trusted hash options for future systems.
Key milestones
2001: NIST publishes SHA-2, including SHA-384 and SHA-512.
2005: Growing concern around SHA-1 pushes more attention toward SHA-2 variants.
2010s: SHA-384 becomes more common in high-security and compliance-oriented environments.
Present: SHA-384 remains a trusted SHA-2 option for strong digest requirements.
Why SHA-384 matters
Stronger margin: It provides a larger output than SHA-256 for applications that want a broader safety margin.
Operational fit: It works well on platforms optimized for SHA-512 style operations.
Advanced configuration tips
For users who want more control, these choices matter most:
Choosing the right input encoding
UTF-8: Best for ordinary text, messages, and readable content.
HEX: Best when you already have raw bytes represented as hexadecimal.
Base64: Best when your source value is already Base64-encoded binary data.
Using HMAC correctly
Use a strong, unique UTF-8 key for HMAC-SHA384.
Do not confuse HMAC output with plain SHA-384 output because the values are intentionally different.
Testing and validation
Cross-check important digests with trusted tools such as OpenSSL or a programming language hash library.
Record the exact input encoding because the same visible text can hash differently when parsed as different byte formats.
Output normalization
HEX output can be normalized to upper case or lower case depending on your documentation or comparison workflow.
Base64 output should not be case-normalized because case affects the value.
Limitations and caveats
Client-Side Processing: Everything runs in the browser.
Not Encryption: Hashing is one-way and does not recover original content.
Encoding Sensitivity: Wrong input format selection can produce an unexpected result or an error.
No Secret Storage: This page does not manage or protect HMAC keys for you.
Browser Dependency: The page assumes a modern browser with JavaScript enabled.
Final tips
Start with UTF-8 input and HEX output if you are testing plain text values.
Use HMAC only when you actually need keyed authentication behavior.
Validate critical hashes against a trusted secondary implementation.
Use this page for education, experimentation, and quick browser verification.
Use professional libraries and operational safeguards for real production security work.
Results are for educational and testing purposes only. Actual outputs may vary based on input accuracy, encoding choice, or implementation details.
FAQs
Can I generate HMAC-SHA384 instead of plain SHA-384?▶
Yes. When you enter an HMAC key, the page generates HMAC-SHA384 instead of a plain SHA-384 hash.
What input formats are supported?▶
The tool supports UTF-8, HEX, and Base64 input. HEX must contain valid hexadecimal characters, and Base64 must be properly padded and formatted.
Why are the case conversion buttons disabled for Base64 output?▶
The upper case and lower case buttons are enabled only for HEX output because Base64 is case-sensitive and should not be normalized.
Is this page suitable for sensitive production data?▶
This page is intended for educational and testing purposes. Sensitive production workloads should use audited libraries, strong operational controls, and secure secret handling.
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This SHA-384 hash generator is for educational reference, testing, and quick browser experiments.
