SHA-384 Hash Generator
High-security 384-bit cryptographic hashing
SHA-384 is a member of the SHA-2 family that produces a 384-bit (96-character hex) hash value. It is actually a truncated version of SHA-512, using different initial hash values and outputting only 384 of the 512 computed bits. SHA-384 is used in government and financial systems requiring higher security than SHA-256 but where the full 512-bit output of SHA-512 is excessive. It's specified in TLS cipher suites and digital signature standards.
What is SHA-384?
SHA-384 uses the exact same algorithm as SHA-512 internally — processing data in 1024-bit blocks through 80 rounds of operations on 64-bit words. The difference lies in the initialization vectors (different starting values) and the final output being truncated to 384 bits. This makes it impossible to use SHA-512 results to derive SHA-384 results or vice versa.
✅ SHA-384 Advantages
- • 192-bit Security: Higher collision resistance than SHA-256
- • 384-bit Output: 96-character hexadecimal digest
- • 64-bit Optimized: Uses 64-bit operations, fast on modern CPUs
- • Government Approved: NIST recommended for sensitive applications
📊 Common Use Cases
- • TLS Cipher Suites: Used in ECDHE-RSA-AES256-SHA384
- • Digital Signatures: High-security document signing
- • Government Systems: FIPS 180-4 compliant applications
- • Financial Protocols: Banking and payment security
💡 When to Use SHA-384
SHA-384 sits between SHA-256 and SHA-512 in security level. Choose SHA-384 when your security requirements exceed SHA-256's 128-bit collision resistance, or when you need the 64-bit performance of SHA-512 but want a shorter output. For most applications, SHA-256 is sufficient.
🔄 SHA-2 Family Comparison
SHA-256
256-bit, 32-bit ops
128-bit collision resistance
SHA-384
384-bit, 64-bit ops
192-bit collision resistance
SHA-512
512-bit, 64-bit ops
256-bit collision resistance
❓ Frequently Asked Questions
Why use SHA-384 instead of SHA-256?
SHA-384 provides 192 bits of collision resistance vs. SHA-256's 128 bits. It also runs SHA-512 internally, which is faster on 64-bit processors, making it both more secure and potentially faster.
Is SHA-384 just truncated SHA-512?
Yes, but with different initial values. This means you cannot derive a SHA-384 hash from a SHA-512 hash of the same data. They are independent despite sharing the same core algorithm.
Where is SHA-384 required?
SHA-384 is often required in government (Suite B cryptography), financial systems, and TLS configurations where higher-than-256-bit security is mandated.