SHA-256 Hash Regex Pattern

Live Regex Tester

Pattern Breakdown

Code Examples

const regex = /^[a-f0-9]{64}$/i;
const test = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
console.log(regex.test(test)); // true

// Extract matches
const matches = test.match(regex);
console.log(matches);

import re

pattern = r'^[a-f0-9]{64}$'
test = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
match = re.search(pattern, test, re.IGNORECASE)
print(match)  # Found!

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`^[a-f0-9]{64}$`)
    fmt.Println(re.MatchString("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")) // true
}

Common Use Cases

Match Examples

About the SHA-256 Hash Regex

Matches SHA-256 hash strings (64 hexadecimal characters). Standard for modern cryptographic applications.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The sha-256 hash pattern is classified as beginner difficulty in the security & auth category. It works in all major programming languages.

When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.

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