bcrypt Hash Identifier
Detect bcrypt hashes confidently and inspect version and cost metadata directly from the stored hash string.
Single or batch analysis
Identify likely hash formats, risk level, and structured metadata
Paste one value or multiple lines. The analyzer checks length, character set, modular prefixes, and common password-hash signatures, then shows likely candidates with honest ambiguity handling.
Entries
1
Selected type
bcrypt
Confidence
High
Risk
Modern
Charset
Structured / modular
Unique likely types
1
Candidates
Likely hash types and why they matched
Starts with $2b$ and matches bcrypt's fixed modular-crypt shape.
Structured details
Parsed metadata when the format exposes it
Version
2b
Cost
12
Payload length
53
Notes
Context and caveats
- bcrypt is adaptive and salted, which makes it much more suitable for password storage than fast digests like MD5 or SHA-1.
Other hash identifier pages
Why use this hash identifier page?
A bcrypt hash identifier is one of the easiest and most useful kinds of hash detection because bcrypt has a recognizable shape and a real security story behind it. Instead of a plain digest, bcrypt is a purpose-built password-hash format with salt and cost embedded into the stored value. That means a good identifier can do more than guess. It can parse the version marker, the work factor, and the overall format with high confidence.
Benefits of this workflow
Use a bcrypt-specific page when you want to confirm that a stored password hash really is bcrypt and not a weaker scheme hiding behind unfamiliar application code. This is common during framework migrations, legacy app audits, authentication reviews, and breach-response cleanup. A clear bcrypt page is valuable because it does not only label the format. It also explains why bcrypt is materially different from fast digests like MD5 or SHA-1 and why the cost value matters when you review existing stored hashes.
- Identifies bcrypt with high confidence using its modular format.
- Parses useful metadata such as version and cost.
- Helps password-storage audits separate strong and weak schemes quickly.
- Adds practical context instead of just naming the algorithm.
How to use the tool well
Paste the stored value and look at the structured details section. If the string starts with markers like $2a$, $2b$, or $2y$ and matches the expected modular-crypt shape, the tool should identify bcrypt with high confidence. Then review the cost value because that is a practical part of the audit. A bcrypt hash may be structurally correct but still configured with a weaker cost than you want in a modern system. The notes section helps frame that result in plain language.
Best practices
- Check the bcrypt cost value, not just the prefix, during password-storage audits.
- Treat bcrypt as far stronger than fast legacy digests for password storage.
- Use framework or application context to confirm how bcrypt is configured and rotated.
- When migrating auth systems, identify bcrypt hashes early so they are not mistaken for generic strings.
Frequently asked questions
Why is bcrypt easier to identify than MD5 or SHA-256?
Because bcrypt exposes a strong prefix and modular structure that includes version and cost information, while plain digests usually only expose length and character shape.
Does identifying bcrypt mean the password storage is automatically ideal?
Not necessarily. bcrypt is a strong scheme, but the configured cost and the broader authentication design still matter.